Assured Guaranty Corp. Guarantees $130 Million of Convertible Capital Appreciation Bonds for the North Texas Toll Authority and Announces September U.S. Public Finance New Issue Volume

Assured Guaranty Corp. ("Assured” or the "Company”), the triple-A rated financial guaranty subsidiary of Assured Guaranty Ltd. (NYSE:AGO), announced today that it guaranteed $130 million of convertible capital appreciation bonds for the North Texas Toll Authority ("NTTA”).

"We are pleased to participate in such a significant transaction for the State of Texas and Dallas-Fort Worth area,” noted Bill Hogan, Senior Managing Director of Assured’s Public Finance Group. "Assured’s financial guaranty will help provide NTTA’s investors with both credit protection and liquidity during this ever changing market environment.”

The $130 million of insured bonds will help fund the construction of the NTTA’s State Highway 121 project. The State Highway 121 project will connect Dallas’ two primary north/south arteries, Interstate 35 and US 75, and provide a connection for north Dallas residents to the Dallas-Fort Worth International Airport.

This is the second transaction that Assured has guaranteed for the NTTA in 2008. Earlier this year, Assured guaranteed $400 million of capital appreciation bonds for the same project.

Assured also announced today it had insured 60 transactions for the month of September 2008 for $1.0 billion of par in the direct new issue U.S. public finance market, representing 5.2% of total public finance volume and 35.3% of insured activity. This was a significant increase compared to September 2007 in which Assured wrapped 19 transactions for $181.7 million of par, or 0.6% of total public finance volume and 1.2% of insured activity.

Assured Guaranty Corp. is a leading provider of financial guaranty insurance in the U.S. and international public finance, structured finance and mortgage-backed securities markets. Assured Guaranty Corp. is rated triple-A by the three leading rating agencies and is licensed in all 50 states, the District of Columbia and Puerto Rico.

Assured Guaranty Ltd. is a Bermuda-based holding company. Its operating subsidiaries provide credit enhancement products to the U.S. and international public finance, structured finance and mortgage markets. More information can be found at www.assuredguaranty.com.

Any forward-looking statements made in this press release reflect the Company’s current views with respect to future events and financial performance and are made pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. Such statements involve risks and uncertainties that may cause actual results to differ materially from those set forth in these statements. For example, the Company’s forward-looking statements, including its statements regarding the expansion of the consumer and mortgage-backed securities business, could be affected by a significant reduction in the amount of reinsurance ceded by one or more of our principal ceding companies, rating agency action such as a ratings downgrade, difficulties with the execution of the Company’s business strategy, contract cancellations, developments in the world’s financial and capital markets, more severe or frequent losses associated with products affecting the adequacy of the Company’s loss reserve, changes in regulation or tax laws, governmental actions, natural catastrophes, the Company’s dependence on customers, decreased demand or increased competition, loss of key personnel, technological developments, the effects of mergers, acquisitions and divestitures, changes in accounting policies or practices, changes in general economic conditions, other risks and uncertainties that have not been identified at this time, management’s response to these factors, and other risk factors identified in the Company’s filings with the Securities and Exchange Commission. Readers are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the dates on which they are made. The Company undertakes no obligation to publicly update or revise any forward-looking statements, whether as a result of new information, future events or otherwise.