Financial Guaranty Portfolio by Geographic Area

---

(1)

Percent total does not add due to rounding.

Financial Guaranty Portfolio by Issue Size

Financial Guaranty Portfolio by Source

Mortgage Guaranty Risk In Force By Geographic Region

---

(1)

The loss recovery of $6.1 million in 2007 is mainly a result of loss recoveries of $8.6 million from two aircraft-related transactions in which claims were paid in 2002 and 2006. These recoveries were partially offset by loss payments related to assumed U.S. home equity line of credit exposures. The prior year loss recovery of $0.3 million in 2006 is due to $13.5 million of net recoveries from third party litigation settlements. These recoveries were primarily offset by loss payments, of which two of the largest were made on a U.S. Infrastructure transaction and a European Infrastructure transaction. The prior year loss recovery of $77.3 million in 2005 is primarily due to $71.0 million in loss recoveries from a third party litigation settlement agreement, with two parties, relating to a reinsurance claim incurred in 1998 and 1999 as well as a $2.4 million recovery related to the equity layer credit protection business.

Investments

        Our principal objectives in managing our investment portfolio are: (1) to preserve our subsidiaries' financial strength ratings; (2) to maximize total after-tax net investment income while generating a competitive total rate of return; (3) to maintain sufficient liquidity to cover unexpected stress in the

22

insurance portfolio; (4) to manage investment risk within the context of the underlying portfolio of insurance risk; and (5) to meet applicable regulatory requirements.

        We have a formal review process for all securities in our investment portfolio, including a review for impairment losses. Factors considered when assessing impairment include: (1) securities whose market values have declined by 20% or more below amortized cost for a continuous period of at least six months; (2) recent credit downgrades of the applicable security or the issuer by rating agencies; (3) the financial condition of the applicable issuer; (4) whether scheduled interest payments are past due; and (5) whether we have the ability and intent to hold the security for a sufficient period of time to allow for anticipated recoveries in fair value. If we believe a decline in the value of a particular investment is temporary, we record the decline as an unrealized loss in accumulated other comprehensive income in shareholders' equity on our consolidated balance sheets. If we believe the decline is "other than temporary," we write down the carrying value of the investment and record a loss on our statements of operations. Our assessment of a decline in value includes management's current judgment of the factors noted above. If that judgment changes in the future, we may ultimately record a loss after having originally concluded that the decline in value was temporary.

        As of December 31, 2007, we had no below investment grade securities or non-rated securities in our investment portfolio. For additional information regarding our investments, see "Management's Discussion and Analysis of Financial Condition and Results of Operations—Liquidity and Capital Resources—Investment Portfolio."

        As of January 1, 2005, we retained BlackRock Financial Management, Inc. to manage our investment portfolio. Our investment managers have discretionary authority over our investment portfolio within the limits of our investment guidelines approved by our Board of Directors. We compensate each of these managers based upon a fixed percentage of the market value of our portfolio. During the years ended December 31, 2007, 2006 and 2005, we paid aggregate investment management fees of $1.9 million, $1.8 million and $1.7 million, respectively, to these managers.

Competition

        Our principal competitors in the financial guaranty direct market are Ambac Assurance Corporation ("Ambac"), Financial Guaranty Insurance Company ("FGIC"), Financial Security Assurance Inc. ("FSA"), MBIA Insurance Corporation ("MBIA"), XL Capital Assurance Inc. ("XLCA") and CIFG Assurance NA ("CIFG"). All of these companies have ratings from Standard & Poor's Inc., a division of The McGraw-Hill Companies, Inc. ("S&P"), Fitch Ratings ("Fitch") and Moody's Investors Service ("Moody's"), and a number of these companies are on negative outlook or credit watch for possible downgrade. Banks, smaller and lower-rated financial guaranty insurance companies and multiline insurers and reinsurers also participate in the broader credit enhancement market. The principal competitive factors are: (1) premium rates; (2) conditions precedent to the issuance of a policy related to the structure and security features of a proposed bond issue; (3) the financial strength ratings of the guarantor; (4) the quality of service and execution provided to issuers, investors and other clients of the issuer and (5) secondary market trading values of bonds insured by the financial guarantor. Financial guaranty insurance also competes domestically and internationally with other forms of credit enhancement, including the use of senior and subordinated tranches of a proposed structured finance obligation and/or overcollateralization or cash collateral accounts, as well as more traditional forms of credit support.

        Our principal competitors in the financial guaranty reinsurance market are Radian Asset Assurance Inc., RAM Reinsurance Company Ltd., XL Financial Assurance Ltd. ("XLFA"), Channel Reinsurance Ltd. and BluePoint Re Ltd. Competition in the financial guaranty reinsurance business is based upon many factors, including financial strength ratings from the major rating agencies' pricing, service, size and underwriting criteria. A number of our principal competitors are on negative outlook or credit watch for possible downgrade by one or more of the major rating agencies. Assured Guaranty

23

Re Ltd. ("AG Re") is the largest financial guaranty reinsurer in terms of size and par insured and is rated AA by S&P and Fitch and is rated Aa2 by Moody's.

Regulation

General

        The business of insurance and reinsurance is regulated in most countries, although the degree and type of regulation varies significantly from one jurisdiction to another. Reinsurers are generally subject to less direct regulation than primary insurers. We are subject to regulation under applicable statutes in the United States, the United Kingdom and Bermuda.

United States

        Assured Guaranty Ltd. has two operating insurance subsidiaries domiciled in the United States, which we refer to collectively as the "Assured Guaranty U.S. Subsidiaries."

        AGC is a Maryland domiciled insurance company licensed to write financial guaranty insurance and reinsurance (and in some states casualty, surety and other lines) in 50 U.S. states, the District of Columbia and Puerto Rico. AGC is also licensed as a Class 3 insurer in Bermuda. It is registered as a foreign company in Australia and operates through a representative office in Sydney. AGC currently intends for the representative office to conduct activities so that it does not have a permanent establishment in Australia.

        Assured Guaranty Mortgage, a wholly-owned subsidiary of AGRO, is a New York corporation licensed as a mortgage guaranty insurer in the State of New York and in the District of Columbia and thereby is authorized solely to transact the business of mortgage guaranty insurance and reinsurance. Assured Guaranty Mortgage is an approved or accredited reinsurer in the States of California, Illinois and Wisconsin.

Insurance Holding Company Regulation

        Assured Guaranty and the Assured Guaranty U.S. Subsidiaries are subject to the insurance holding company laws of Maryland and New York. These laws generally require each of the Assured Guaranty U.S. Subsidiaries to register with its respective domestic state insurance department and annually to furnish financial and other information about the operations of companies within their holding company system. Generally, all transactions among companies in the holding company system to which any of the Assured Guaranty U.S. Subsidiaries is a party (including sales, loans, reinsurance agreements and service agreements) must be fair and, if material or of a specified category, such as service agreements, require prior notice and approval or non-disapproval by the insurance department where the applicable subsidiary is domiciled.

Change of Control

        Before a person can acquire control of a U.S. domestic insurance company, prior written approval must be obtained from the insurance commissioner of the state where the domestic insurer is domiciled. Generally, state statutes provide that control over a domestic insurer is presumed to exist if any person, directly or indirectly, owns, controls, holds with the power to vote, or holds proxies representing, 10% or more of the voting securities of the domestic insurer. Prior to granting approval of an application to acquire control of a domestic insurer, the state insurance commissioner will consider such factors as the financial strength of the applicant, the integrity and management of the applicant's Board of Directors and executive officers, the acquirer's plans for the management of the applicant's Board of Directors and executive officers, the acquirer's plans for the future operations of the domestic insurer and any anti-competitive results that may arise from the consummation of the acquisition of control. These laws may discourage potential acquisition proposals and may delay, deter

24

or prevent a change of control involving us that some or all of our stockholders might consider to be desirable, including in particular unsolicited transactions.

State Insurance Regulation

        State insurance authorities have broad regulatory powers with respect to various aspects of the business of U.S. insurance companies, including licensing these companies to transact business, accreditation of reinsurers, admittance of assets to statutory surplus, regulating unfair trade and claims practices, establishing reserve requirements and solvency standards, regulating investments and dividends, and, in certain instances, approving policy forms and related materials and approving premium rates. State insurance laws and regulations require the Assured Guaranty U.S. Subsidiaries to file financial statements with insurance departments everywhere they are licensed, authorized or accredited to conduct insurance business, and their operations are subject to examination by those departments at any time. The Assured Guaranty U.S. Subsidiaries prepare statutory financial statements in accordance with Statutory Accounting Practices, or SAP, and procedures prescribed or permitted by these departments. State insurance departments also conduct periodic examinations of the books and records, financial reporting, policy filings and market conduct of insurance companies domiciled in their states, generally once every three to five years. Market conduct examinations by regulators other than the domestic regulator are generally carried out in cooperation with the insurance departments of other states under guidelines promulgated by the National Association of Insurance Commissioners.

        The Maryland Insurance Administration conducts a periodic examination of insurance companies domiciled in Maryland every five years. The last such Report on Financial Examination, issued by the Maryland Insurance Administration on October 10, 2003 in connection with such examination, did not contain any materially adverse findings. Field work began in June of 2007 for the Maryland Insurance Administration's examination of AGC for the five-year period ending December 31, 2006. We anticipate that the Maryland Insurance Administration will issue their Report on Financial Examination during 2008. The New York Insurance Department, the regulatory authority of the domiciliary jurisdiction of Assured Guaranty Mortgage, conducts a periodic examination of insurance companies domiciled in New York, also at five-year intervals. During 2003, the New York Insurance Department completed its field work in connection with its examination of Assured Guaranty Mortgage for the period from 1997 though 2002. The report on the examination, issued July 11, 2003 by the New York Insurance Department, does not contain any materially adverse findings.

        The terms and conditions of reinsurance agreements generally are not subject to regulation by any U.S. state insurance department with respect to rates. As a practical matter, however, the rates charged by primary insurers do have an effect on the rates that can be charged by reinsurers.

State Dividend Limitations

        Maryland.     One of the primary sources of cash for the payment of debt service and dividends by Assured Guaranty is the receipt of dividends from AGC. If a dividend or distribution is an "extraordinary dividend," it must be reported to, and approved by, the Insurance Commissioner prior to payment. An "extraordinary dividend" is defined to be any dividend or distribution to stockholders, such as Assured Guaranty US Holdings Inc., which together with dividends paid during the preceding twelve months exceeds the lesser of 10% of an insurance company's policyholders' surplus at the preceding December 31 or 100% of AGC's adjusted net investment income during that period. Further, an insurer may not pay any dividend or make any distribution to its shareholders unless the insurer notifies the Insurance Commissioner of the proposed payment within five business days following declaration and at least ten days before payment. The Insurance Commissioner may declare that such dividend not be paid if the Commissioner finds that the insurer's policyholders' surplus would be inadequate after payment of the dividend or could lead the insurer to a hazardous financial condition.

25

AGC declared and paid dividends of $12.1 million, $13.8 million and $4.3 million during 2007, 2006 and 2005, respectively, to Assured Guaranty US Holdings Inc. The maximum amount available during 2008 for the payment of dividends by AGC which would not be characterized as "extraordinary dividends" is approximately $40.0 million.

        New York.     Under the New York Insurance Law, Assured Guaranty Mortgage may declare or pay any dividend only out of "earned surplus," which is defined as that portion of the company's surplus that represents the net earnings, gains or profits (after deduction of all losses) that have not been distributed to shareholders as dividends or transferred to stated capital, capital surplus or contingency reserves, or applied to other purposes permitted by law, but does not include unrealized appreciation of assets. Additionally, no dividend may be declared or distributed in an amount which, together with all dividends declared or distributed by it during the preceding twelve months, exceeds the lesser of 10% of Assured Guaranty Mortgage's statutory surplus as shown on its latest statutory financial statement on file with the New York Superintendent of Insurance, or 100% of Assured Guaranty Mortgage's adjusted net investment income during that period, unless, upon prior application, the Superintendent approves a greater dividend or distribution after finding that the company will retain sufficient surplus to support its obligations and writings. Assured Guaranty Mortgage did not declare or pay dividends during 2007. As of December 31, 2007, Assured Guaranty Mortgage had negative unassigned funds and therefore cannot pay dividends during 2008.

Contingency Reserves

        In accordance with Maryland insurance law and regulations, AGC maintains a statutory contingency reserve for the protection of policyholders against the effect of adverse economic cycles. The contingency reserve is maintained for each obligation and is equal to the greater of 50% of the premiums written or a percentage of principal guaranteed (which percentage varies from 0.55% to 2.5% depending on the nature of the asset). The contingency reserve is put up over a period of either 15 or 20 years, depending on the nature of the obligation, and then taken down over the same period of time. The contingency reserve may be maintained net of reinsurance. AGC's contingency reserve as of December 31, 2007 was in compliance with these insurance laws and regulations.

        Under the New York Insurance Law, Assured Guaranty Mortgage must establish a contingency reserve to protect policyholders against the effect of adverse economic cycles. This reserve is established out of net premiums (gross premiums less premiums returned to policyholders) remaining after the statutory unearned premium reserve is established. Contributions to the contingency reserve must equal 50% of remaining earned premiums and, except as otherwise approved by the Superintendent of Insurance, must be maintained in the contingency reserve for a period of 120 months. Reinsurers are required to establish a contingency reserve equal to their proportionate share of the reserve established by the ceding company. Assured Guaranty Mortgage's contingency reserve as of December 31, 2007 was in compliance with these insurance laws and regulations.

Risk-to-Capital Requirements

        Under the New York Insurance Law, Assured Guaranty Mortgage's total liability, net of applicable reinsurance, under its aggregate insurance policies may not exceed 25 times its total policyholders' surplus, commonly known as the "risk-to-capital" requirement. As of December 31, 2007, the consolidated risk-to-capital ratio for Assured Guaranty Mortgage was below the limit.

Investments

        The Assured Guaranty U.S. Subsidiaries are subject to laws and regulations that require diversification of their investment portfolio and limit the amount of investments in certain asset categories, such as below investment grade fixed maturity securities, equity real estate, other equity investments, and derivatives. Failure to comply with these laws and regulations would cause investments

26

exceeding regulatory limitations to be treated as non-admitted assets for purposes of measuring surplus, and, in some instances, would require divestiture of such non-qualifying investments. We believe that the investments made by the Assured Guaranty U.S. Subsidiaries complied with such regulations as of December 31, 2007. In addition, any investment must be approved by the insurance company's Board of Directors or a committee thereof that is responsible for supervising or making such investment.

Operations of Our Non-U.S. Insurance Subsidiaries

        The insurance laws of each state of the United States and of many other countries regulate or prohibit the sale of insurance and reinsurance within their jurisdictions by unlicensed or non-accredited insurers and reinsurers. Assured Guaranty (UK) Ltd., AG Re and AGRO are not admitted to do business in the United States. We do not intend that Assured Guaranty (UK) Ltd., AG Re or AGRO will maintain offices or solicit, advertise, settle claims or conduct other insurance activities in any jurisdiction in the United States where the conduct of such activities would require it to be admitted or authorized.

        In addition to the regulatory requirements imposed by the jurisdictions in which they are licensed, reinsurers' business operations are affected by regulatory requirements in various states of the United States governing "credit for reinsurance" which are imposed on their ceding companies. In general, a ceding company which obtains reinsurance from a reinsurer that is licensed, accredited or approved by the ceding company's state of domicile is permitted to reflect in its statutory financial statements a credit in an aggregate amount equal to the ceding company's liability for unearned premiums (which are that portion of premiums written which applies to the unexpired portion of the policy period), loss reserves and loss expense reserves ceded to the reinsurer. The great majority of states, however, permit a credit on the statutory financial statement of a ceding insurer for reinsurance obtained from a non-licensed or non-accredited reinsurer to the extent that the reinsurer secures its reinsurance obligations to the ceding insurer by providing a letter of credit, trust fund or other acceptable security arrangement. A few states do not allow credit for reinsurance ceded to non-licensed reinsurers except in certain limited circumstances and others impose additional requirements that make it difficult to become accredited.

Bermuda

        Each of AG Re and AGRO, our "Bermuda Subsidiaries," is an insurance company registered and licensed as a "Class 3 insurer" and a "long term insurer" under the Insurance Act 1978 of Bermuda. AGC is permitted under a revocable permit granted under the Companies Act 1981 of Bermuda (the "Companies Act") to engage in and carry on trade and business limited to engaging in certain non U.S. financial guaranty insurance and reinsurance outside Bermuda from a principal place of business in Bermuda, subject to compliance with the conditions attached to the permit and relevant provisions of the Companies Act (including having a Bermuda principal representative for the Companies Act purposes, restrictions on activities in Bermuda, publication and filing of prospectuses on public offerings of securities, registration of charges against its assets and certain winding up provisions). AGC is also licensed as a Class 3 insurer in Bermuda. The Insurance Act 1978 of Bermuda, amendments thereto and related regulations (collectively, the "Insurance Act") impose on insurance companies certain solvency and liquidity standards; certain restrictions on the declaration and payment of dividends and distributions; certain restrictions on the reduction of statutory capital; certain restrictions on the winding up of long term insurers; and certain auditing and reporting requirements and also the need to have a principal representative and a principal office (as understood under the Insurance Act) in Bermuda. The Insurance Act grants to the Bermuda Monetary Authority the power to cancel insurance licenses, supervise, investigate and intervene in the affairs of insurance companies and in certain circumstances share information with foreign regulators. Class 3 insurers are authorized to carry on general insurance business (as understood under the Insurance Act), subject to conditions attached to the license and to compliance with minimum capital and surplus requirements, solvency margin,

27

liquidity ratio and other requirements imposed by the Insurance Act. Long term insurers are permitted to carry on long term business (as understood under the Insurance Act) subject to conditions attached to the license and to similar compliance requirements and the requirement to maintain its long term business fund (a segregated fund). Each of AG Re and AGRO is required annually to file statutorily mandated financial statements and returns, audited by an auditor approved by the Bermuda Monetary Authority (no approved auditor of an insurer may have an interest in that insurer, other than as an insured, and no officer, servant or agent of an insurer shall be eligible for appointment as an insurer's approved auditor), together with an annual loss reserve opinion of a Bermuda Monetary Authority approved loss reserve specialist and the required actuary's certificate with respect to the long term business. AGC has an exemption from such filings, subject to certain conditions.

        In addition, pursuant to provisions under the Insurance Act, any person who becomes a holder of at least 10%, 20%, 33% or 50% of our common shares must notify the Bermuda Monetary Authority in writing within 45 days of becoming such a holder or 30 days from the date they have knowledge of having become such a holder, whichever is later. The Bermuda Monetary Authority has the power to object to a person holding 10% or more of our common shares if it appears to the Authority that the person is not fit and proper to be such a holder. In such a case, the Bermuda Monetary may require the holder to reduce their shareholding in us and may direct, among other things, that the voting rights attaching to their common shares shall not be exercisable. A person that does not comply with such a notice or direction from the Bermuda Monetary Authority will be guilty of an offence.

        Under a condition to its permit granted under the Companies Act, AGC must inform the Minister of Finance of any change in its beneficial ownership within 14 days of the occurrence of such change.

Restrictions on Dividends and Distributions

        The Insurance Act limits the declaration and payment of dividends and other distributions by AG Re, AGRO and AGC.

        Under the Insurance Act:

•

The minimum share capital must be always issued and outstanding and cannot be reduced (for a company registered both as a Class 3 insurer and a long-term insurer the minimum share capital is US$370,000 and for a company registered as a Class 3 insurer only, the minimum share capital is US$120,000).



•

With respect to the distribution (including repurchase of shares) of any share capital, contributed surplus or other statutory capital, certain restrictions under the Insurance Act 1978 may apply if the proposal is to reduce its total statutory capital. Before reducing its total statutory capital by 15% or more of the insurer's total statutory capital as set out in its previous year's financial statements, a Class 3 insurer or a long-term insurer must obtain the prior approval of the Bermuda Monetary Authority.



•

With respect to the declaration and payment of dividends:

(a) the insurer may not declare or pay any dividends during any financial year if it would cause the insurer to fail the applicable solvency margin or liquidity ratio (the "relevant margins");

(b) if the insurer failed to meet any of its relevant margins on the last day of any financial year the insurer may not, without the prior approval of the Bermuda Monetary Authority, declare or pay any dividends during the next financial year; and

(c) a Class 3 insurer which at any time fails to meet its general business solvency margin may not declare or pay any dividend until the failure is rectified, and also in such circumstances the Class 3 insurer must report, within 30 days after becoming aware of its failure or having reason to believe that such failure has occurred, to the Bermuda Monetary Authority giving

28

particulars of the circumstances leading to the failure and the manner and time in which the Class 3 insurer intends to rectify the failure.

•

A long-term insurer may not:

(a) use the funds allocated to its long-term business fund, directly or indirectly, for any purpose other than a purpose of its long-term business except in so far as such payment can be made out of any surplus certified by the insurer's approved actuary to be available for distribution otherwise than to policyholders; and

(b) declare or pay a dividend to any person other than a policyholder unless the value of the assets of its long-term business fund, as certified by the insurer's approved actuary, exceeds the extent (as so certified) of the liabilities of the insurer's long-term business, and the amount of any such dividend shall not exceed the aggregate of (1) that excess; and (2) any other funds properly available for the payment of dividends being funds arising out of the business of the insurer other than its long-term business.

        Under the Companies Act, a Bermuda company (such as Assured Guaranty, AG Re and AGRO) may only declare and pay a dividend or make a distribution out of contributed surplus (as understood under the Companies Act) if there are reasonable grounds for believing that the company is and after the payment will be able to meet and pay its liabilities as they become due and the realizable value of the company's assets will not be less than the aggregate of its liabilities and its issued share capital and share premium accounts. The Companies Act also regulates and restricts the reduction and return of capital and paid in share premium, including the repurchase of shares and imposes minimum issued and outstanding share capital requirements.

Certain Other Bermuda Law Considerations

        Although Assured Guaranty Ltd. is incorporated in Bermuda, it is classified as a non-resident of Bermuda for exchange control purposes by the Bermuda Monetary Authority. Pursuant to its non-resident status, Assured Guaranty may engage in transactions in currencies other than Bermuda dollars and there are no restrictions on its ability to transfer funds (other than funds denominated in Bermuda dollars) in and out of Bermuda or to pay dividends to U.S. residents who are holders of its common shares.

        Under Bermuda law, "exempted" companies are companies formed for the purpose of conducting business outside Bermuda from a principal place of business in Bermuda. As an "exempted" company, Assured Guaranty (as well as each of AG Re and AGRO) may not, without the express authorization of the Bermuda legislature or under a license or consent granted by the Minister of Finance, participate in certain business and other transactions, including: (1) the acquisition or holding of land in Bermuda (except that held by way of lease or tenancy agreement which is required for its business and held for a term not exceeding 50 years, or which is used to provide accommodation or recreational facilities for its officers and employees and held with the consent of the Bermuda Minister of Finance, for a term not exceeding 21 years), (2) the taking of mortgages on land in Bermuda to secure a principal amount in excess of $50,000 unless the Minister of Finance consents to a higher amount, and (3) the carrying on of business of any kind or type for which it is not duly licensed in Bermuda, except in certain limited circumstances, such as doing business with another exempted undertaking in furtherance of Assured Guaranty's business carried on outside Bermuda.

        The Bermuda government actively encourages foreign investment in "exempted" entities like Assured Guaranty that are based in Bermuda, but which do not operate in competition with local businesses. Assured Guaranty is not currently subject to taxes computed on profits or income or computed on any capital asset, gain or appreciation. Bermuda companies and permit companies, such as AGC, pay, as applicable, annual government fees, business fees, payroll tax and other taxes and duties. See "Material Tax Considerations—Taxation of Assured Guaranty and Subsidiaries—Bermuda."

29

        Special considerations apply to our Bermuda operations. Under Bermuda law, non Bermudians, other than spouses of Bermudians and individuals holding permanent resident certificates or working resident certificates, are not permitted to engage in any gainful occupation in Bermuda without a work permit issued by the Bermuda government. A work permit is only granted or extended if the employer can show that, after a proper public advertisement, no Bermudian, spouse of a Bermudian or individual holding a permanent resident certificate is available who meets the minimum standards for the position. The Bermuda government has a policy that places a six-year term limit on individuals with work permits, subject to specified exemptions for persons deemed to be key employees. Currently, all of our Bermuda based professional employees who require work permits have been granted work permits by the Bermuda government. This includes the following key employees: Messrs. Frederico, Mills, Michener, Albert, Pickering and Bailenson and Ms. Purtill each of whom has received a work permit.

United Kingdom

General

        Since December 1, 2001, the regulation of the financial services industry in the United Kingdom has been consolidated under the Financial Services Authority ("FSA UK"). In addition, the regulatory regime in the United Kingdom must comply with certain European Union ("EU") directives binding on all EU member states and notably the Markets in Financial Instruments Directive ("MiFID") which came into effect on November 1, 2007, replacing the Investments Services Directive, largely for the purposes of harmonising the regulatory regime for investment services and activities across the EEA (see definition of "EEA" under "Passporting" below).

        The FSA UK is the single statutory regulator responsible for regulating the financial services industry in the UK, having the authority to oversee the carrying on of "regulated activities" (including deposit taking, insurance and reinsurance, investment management and most other financial services), with the purpose of maintaining confidence in the UK financial system, providing public understanding of the system, securing the proper degree of protection for consumers and helping to reduce financial crime. It is a criminal offense for any person to carry on a regulated activity in the UK unless that person is authorized by the FSA UK and has been granted permission to carry on that regulated activity, or otherwise falls under an exemption to such regulation.

        Insurance business in the United Kingdom falls into two main categories: long-term insurance (which is primarily investment related) and general insurance. Subject to limited exceptions, it is not possible for a new insurance company to be authorized in both long-term and general insurance business unless the long-term insurance business is restricted to reinsurance business. These two categories are both divided into "classes" (for example: permanent health and pension fund management are two classes of long-term insurance; damage to property and motor vehicle liability are two classes of general insurance). Under the Financial Services and Markets Act 2000 ("FSMA"), effecting or carrying out contracts of insurance, within a class of general or long-term insurance, by way of business in the UK, constitutes a "regulated activity" requiring authorization. An authorized insurance company must have permission for each class of insurance business it intends to write.

        Assured Guaranty (UK) Ltd. is authorized to effect and carry out certain classes of non-life insurance, specifically: classes 14 (credit), 15 (suretyship) and 16 (miscellaneous financial loss). This scope of permission is sufficient to enable Assured Guaranty (UK) Ltd. to effect and carry out financial guaranty insurance and reinsurance. The insurance and reinsurance businesses of Assured Guaranty (UK) Ltd. are subject to close supervision by the FSA UK. In addition to its requirements for senior management arrangements, systems and controls of insurance and reinsurance companies under its jurisdiction, the FSA UK now regards itself as a principles-based regulator and is placing an increased emphasis on risk identification and management in relation to the prudential regulation of insurance and reinsurance business in the United Kingdom. In recent years, there have been a number of changes to the FSA UK's rules that affect insurance and reinsurance companies authorized in the UK. For

30

example, the FSA UK introduced rules on the sale of general insurance, known as insurance mediation, and introduced the General Prudential Sourcebook (GENPRU); the Prudential Sourcebook for Insurers (INSPRU); and the Interim Prudential Sourcebook for Insurers (IPRU-INS), together the "Prudential Sourcebooks" which include measures such as risk-based capital adequacy rules, including individual capital assessments which are intended to align capital requirements with the risk profile of each insurance company and proposals aimed at ensuring adequate diversification of an insurer's or reinsurer's exposures to any credit risks of its reinsurers. Assured Guaranty (UK) Ltd. has calculated its minimum required capital according to the FSA's individual capital adequacy criteria and is in compliance.

        As a consequence of the new insurance mediation rules, Assured Guaranty (UK) Ltd. now also has permission to arrange and advise on deals in financial guaranties which it underwrites.

        Assured Guaranty Finance Overseas, Ltd. is not authorized as an insurer. It is authorized by the FSA UK as a "Category D" company to carry out designated investment business activities in that it may "advise on investments (except on pension transfers and pension opt outs)" relating to most investment instruments. In addition, it may arrange or bring about transactions in investments and make "arrangements with a view to transactions in investments." It should be noted that Assured Guaranty Finance Overseas, Ltd. does not itself take risk in the transactions it arranges or places, and may not hold funds on behalf of its customers.

Supervision

        The FSA UK carries out the prudential supervision of insurance companies through a variety of methods, including the collection of information from statistical returns, review of accountants' reports, visits to insurance companies and regular formal interviews.

        The FSA UK has adopted a principles-based and risk-based approach to the supervision of insurance companies. Under this approach, the FSA UK periodically performs a formal risk assessment of insurance companies or groups carrying on business in the UK which varies in scope according to the risk profile of the insurer. The FSA UK performs its risk assessment broadly, by analyzing information which it receives during the normal course of its supervision, such as regular prudential returns on the financial position of the insurance company, or which it acquires through a series of meetings with senior management of the insurance company and by making use of its thematic work. After each risk assessment, the FSA UK will inform the insurer of its views on the insurer's risk profile. This will include details of any remedial action that the FSA UK requires and the likely consequences if this action is not taken.

Solvency Requirements

        GENPRU and INSPRU require that non-life insurance companies such as Assured Guaranty (UK) Ltd. maintain a margin of solvency at all times in respect of the liabilities of the insurance company, the calculation of which depends on the type and amount of insurance business a company writes. The method of calculation of the solvency margin (known as the minimum capital requirement) is set out in the Prudential Sourcebooks, and for these purposes, the insurer's assets and liabilities are subject to specified valuation rules. The Prudential Sourcebooks also requires that Assured Guaranty (UK) Ltd. calculates and shares with the FSA UK its "enhanced capital requirement" based on risk-weightings applied to assets held and lines of business written. This enhanced capital requirement is not yet a legally-binding requirement but is required to form the basis of Assured Guaranty (UK) Ltd.'s individual capital assessment which is then discussed with the FSA UK. Failure to maintain capital at least equal to the higher of the minimum capital requirement and the individual capital assessment is one of the grounds on which the wide powers of intervention conferred upon the FSA UK may be exercised.

31

        To the extent that the amount of premiums for such classes exceed certain specified minimum thresholds, each insurance company writing property, credit and other specified categories of insurance or reinsurance business is required by the Prudential Sourcebooks to maintain an equalization reserve calculated in accordance with the provisions of IPRU.

        These solvency requirements came into force on January 1, 2005. They may need to be amended in order to implement the European Union's proposed "Solvency II" directive on risk-based capital but that is not expected to be implemented until 2012.

        In addition, an insurer [(which as of December 10, 2007 includes a company conducting only reinsurance business)] is required to perform and submit to the FSA UK a group capital adequacy return in respect of its ultimate parent and, if different, its ultimate EEA parent. The calculation at the level of the ultimate EEA parent is required to show a positive result from December 31, 2006. There is no such requirement in relation to the report at the level of the ultimate parent, although if the report at that level raises concerns the FSA may take regulatory action. Public disclosure of the EEA group calculation is also required. The purpose of this rule is to prevent leveraging of capital arising from involvements in other group insurance firms. Given the current structure of the Company, the main aspects of the Company's capital regime will not apply to Assured Guaranty (UK) Ltd.'s ultimate parent, because it is incorporated in Bermuda, nor to the intermediate holding companies, because they are incorporated in the United States, but reporting will be required to the FSA UK up to the ultimate parent.

        Further, an insurer is required to report in its annual returns to the FSA UK all material related party transactions (e.g., intragroup reinsurance, whose value is more than 5% of the insurer's general insurance business amount).

Restrictions on Dividend Payments

        UK company law prohibits Assured Guaranty (UK) Ltd. from declaring a dividend to its shareholders unless it has "profits available for distribution." The determination of whether a company has profits available for distribution is based on its accumulated realized profits less its accumulated realized losses. While the UK insurance regulatory laws impose no statutory restrictions on a general insurer's ability to declare a dividend, the FSA UK's capital requirements may in practice act as a restriction on dividends.

Reporting Requirements

        UK insurance companies must prepare their financial statements under the Companies Act of 1985 - 2006 (as amended), which requires the filing with Companies House of audited financial statements and related reports. In addition, UK insurance companies are required to file regulatory returns with the FSA UK, which include a revenue account, a profit and loss account and a balance sheet in prescribed forms. Under sections of IPRU-INS, audited regulatory returns must be filed with the FSA UK within two months and 15 days of the financial year end (or three months where the delivery of the return is made electronically).

Supervision of Management

        The FSA UK closely supervises the management of insurance companies through the approved persons regime, by which any appointment of persons to perform certain specified "controlled functions" within a regulated entity must be approved by the FSA UK.

32

Change of Control

        FSMA regulates the acquisition of "control" of any UK insurance company authorized under FSMA. Any company or individual that (together with its or his associates) directly or indirectly acquires 10% or more of the shares in a UK authorized insurance company or its parent company, or is entitled to exercise or control the exercise of 10% or more of the voting power in such authorized insurance company or its parent company, would be considered to have acquired "control" for the purposes of the relevant legislation, as would a person who had significant influence over the management of such authorized insurance company or its parent company by virtue of his shareholding or voting power in either.

        Under FSMA, any person proposing to acquire "control" of a UK authorized insurance company must give prior notification to the FSA UK of its intention to do so. The FSA UK then has three months to consider that person's application to acquire "control." In considering whether to approve such application, the FSA UK must be satisfied that both the acquirer is a "fit and proper" person to have "control" and that the interests of consumers would not be threatened by such acquisition of "control." "Consumers" in this context includes all persons who may use the services of the authorized insurance company. Failure to make the relevant prior application could result in action being taken by the FSA UK.

Intervention and Enforcement

        The FSA UK has extensive powers to intervene in the affairs of an authorized person, culminating in the ultimate sanction of the removal of authorization to carry on a regulated activity. FSMA imposes on the FSA UK statutory obligations to monitor compliance with the requirements imposed by FSMA, and to investigate and enforce the provisions of FSMA related rules made by the FSA UK such as the Prudential Sourcebooks and breaches of the New Conduct of Business Sourcebook generally applicable to authorized persons as a result of the implementation of MiFID.

        The FSA UK also has the power to prosecute criminal offenses arising under FSMA, and to prosecute insider dealing under Part V of the Criminal Justice Act of 1993, and breaches of money laundering regulations. The FSA UK's stated policy is to pursue criminal prosecution in all appropriate cases.

"Passporting"

        EU directives allow Assured Guaranty Finance Overseas, Ltd. and Assured Guaranty (UK) Ltd. to conduct business in EU states other than the United Kingdom in compliance with the scope of permission granted these companies by FSA UK without the necessity of additional licensing or authorization in other EU jurisdictions. This ability to operate in other jurisdictions of the EU on the basis of home state authorization and supervision is sometimes referred to as "passporting." Insurers may operate outside their home member state either on a "services" basis or on an "establishment" basis. Operating on a "services" basis means that the company conducts permitted businesses in the host state without having a physical presence there, while operating on an establishment basis means the company has a branch or physical presence in the host state. In both cases, a company remains subject to regulation by its home regulator although the company nonetheless may have to comply with certain local rules, such as where the company is operating on an "establishment" basis in which case, the local conduct of business (and other related) rules apply since the host state is regarded as better placed to detect and intervene in respect of suspected breaches relating to the branch within its territory. In such cases, the home state rules apply in respect of "organisational" and "prudential" obligations. In addition to EU member states, Norway, Iceland and Liechtenstein (members of the broader European Economic Area or "EEA") are jurisdictions in which this passporting framework applies. Assured Guaranty (UK) Ltd. is permitted to operate on a passport basis in various countries

33

throughout the EEA; Assured Guaranty Finance Overseas, Ltd. is permitted to operate on a services basis in Austria, Belgium, Denmark, Finland, France, Germany, the Republic of Ireland, Italy, Luxembourg, the Netherlands, Norway, Portugal, Spain and Sweden.

Fees and Levies

        Assured Guaranty (UK) Ltd. is subject to FSA UK fees and levies based on Assured Guaranty (UK) Ltd.'s gross written premiums. The FSA UK also requires authorized insurers to participate in an investors' protection fund, known as the Financial Services Compensation Scheme (the "FSCS"). The FSCS was established to compensate consumers of financial services, including the buyers of insurance, against failures in the financial services industry. Individual policyholders and small businesses may be compensated by the FSCS when an authorized insurer is unable, or likely to be unable, to satisfy policyholder claims. Assured Guaranty (UK) Ltd. does not expect to write any insurance business that is protected by the FSCS.

Tax Matters

Taxation of Assured Guaranty and Subsidiaries

Bermuda

        Under current Bermuda law, there is no Bermuda income, corporate or profits tax or withholding tax, capital gains tax or capital transfer tax payable by us. Assured Guaranty, AGC, and the Bermuda Subsidiaries have each obtained from the Minister of Finance under the Exempted Undertakings Tax Protection Act 1966, as amended, an assurance that, in the event that Bermuda enacts legislation imposing tax computed on profits, income, any capital asset, gain or appreciation, or any tax in the nature of estate duty or inheritance, then the imposition of any such tax shall not be applicable to Assured Guaranty, AGC or the Bermuda Subsidiaries or to any of their operations or their shares, debentures or other obligations, until March 28, 2016. This assurance is subject to the proviso that it is not to be construed so as to prevent the application of any tax or duty to such persons as are ordinarily resident in Bermuda, or to prevent the application of any tax payable in accordance with the provisions of the Land Tax Act 1967 or otherwise payable in relation to any land leased to Assured Guaranty, AGC or the Bermuda Subsidiaries. Assured Guaranty, AGC and the Bermuda Subsidiaries each pay annual Bermuda government fees, and the Bermuda Subsidiaries and AGC pay annual insurance license fees. In addition, all entities employing individuals in Bermuda are required to pay a payroll tax and there are other sundry taxes payable, directly or indirectly, to the Bermuda government.

United States

        We have conducted and intend to conduct substantially all of our foreign operations outside the United States and to limit the U.S. contacts of Assured Guaranty and its foreign subsidiaries (except AGRO, which has elected to be taxed as a U.S. corporation) so that they should not be engaged in a trade or business in the United States. A foreign corporation, such as AG Re deemed to be engaged in a trade or business in the United States would be subject to U.S. income tax at regular corporate rates, as well as the branch profits tax, on its income which is treated as effectively connected with the conduct of that trade or business, unless the corporation is entitled to relief under the permanent establishment provision of an applicable tax treaty, as discussed below. Such income tax, if imposed, would be based on effectively connected income computed in a manner generally analogous to that applied to the income of a U.S. corporation, except that a foreign corporation may generally be entitled to deductions and credits only if it timely files a U.S. federal income tax return. Assured Guaranty and AG Re have and will continue to file protective U.S. federal income tax returns on a timely basis in order to preserve the right to claim income tax deductions and credits if it is ever determined that they are subject to U.S. federal income tax. The highest marginal federal income tax

34

rates currently are 35% for a corporation's effectively connected income and 30% for the "branch profits" tax.

        Under the income tax treaty between Bermuda and the United States (the "Bermuda Treaty"), a Bermuda insurance company would not be subject to U.S. income tax on any insurance income found to be effectively connected with a U.S. trade or business unless that trade or business is conducted through a permanent establishment in the United States. AG Re currently intends to conduct its activities so that it does not have a permanent establishment in the United States.

        An insurance enterprise resident in Bermuda generally will be entitled to the benefits of the Bermuda Treaty if (i) more than 50% of its shares are owned beneficially, directly or indirectly, by individual residents of the United States or Bermuda or U.S. citizens and (ii) its income is not used in substantial part, directly or indirectly, to make disproportionate distributions to, or to meet certain liabilities of, persons who are neither residents of either the United States or Bermuda nor U.S. citizens. We believe AG Re qualifies for Bermuda treaty benefits. Assured Guaranty is not eligible for treaty benefits because it is not an insurance company.

        Foreign insurance companies carrying on an insurance business within the United States have a certain minimum amount of effectively connected net investment income, determined in accordance with a formula that depends, in part, on the amount of U.S. risk insured or reinsured by such companies. If AG Re is considered to be engaged in the conduct of an insurance business in the United States and is not entitled to the benefits of the Bermuda Treaty in general (because it fails to satisfy one of the limitations on treaty benefits discussed above), the Code could subject a significant portion of AG Re's investment income to U.S. income tax.

        The United States also imposes an excise tax on insurance and reinsurance premiums paid to foreign insurers or reinsurers with respect to risks located in the United States. The rates of tax applicable to premiums paid to AG Re and Assured Guaranty UK are 4% for casualty insurance premiums and 1% for reinsurance premium on life insurance premiums, subject to reduction to 0% under the U.K. Treaty with respect to premiums paid to Assured Guaranty UK.

        Assured Guaranty US Holdings is a Delaware holding company. Its direct subsidiaries are AGC, a Maryland corporation and AG Financial Products, a Delaware corporation. Assured Guaranty Overseas US Holdings is a Delaware corporation and its subsidiary, AGRO, is a Bermuda company which has elected under the Code to be taxed as a U.S. corporation. AGRO's subsidiary is Assured Guaranty Mortgage, which is a New York corporation. As such, each corporation is subject to taxation in the United States at regular corporate rates. Dividends paid, if any, by Assured Guaranty US Holdings to Assured Guaranty will be subject to a 30% U.S. withholding tax.

Taxation of Shareholders

Bermuda Taxation

        Currently, there is no Bermuda withholding or other tax payable on principal, interests or dividends paid to the holders of the common shares of Assured Guaranty.

United States Taxation

        This discussion is based upon the Code, the regulations promulgated thereunder and any relevant administrative rulings or pronouncements or judicial decisions, all as in effect on the date hereof and as currently interpreted, and does not take into account possible changes in such tax laws or interpretations thereof, which may apply retroactively. This discussion does not include any description of the tax laws of any state or local governments within the United States.

35