Ace Limited Reports First Quarter Results

§ Net income (including realized losses) for the quarter totaled $247 million compared with net income of $198 million for the comparable period a year ago.

§ Net income per share was $0.90 for the period compared with $0.70 for the same quarter last year, a gain of 29%.

§ Net operating income was $279 million compared with $216 million for the same quarter in 2002.(1)

§ Net operating income per share was $1.02 for the current quarter compared with $0.77 for the same quarter last year, a gain of 32%.( 1 )

§ Net realized losses, net of tax, were $32 million, compared with net realized losses of $18 million for the same quarter in 2002. Unrealized gains totaled $79 million compared with $84 million for the same period in 2002.

§ Diluted book value per share at March 31, 2003 was $25.14 compared with $24.16 at December 31, 2002, and $23.78 at March 31, 2002.( 2 )

§ Net premiums written increased 48 percent over the same quarter a year ago, while net premiums earned increased 52% quarter on quarter.

§ Operating cash flow was $600 million during the quarter compared to $144 million in the comparable

quarter of 2002.

§ Net investment income rose 3% to $206 million for the quarter compared with $200 million in the prior year's quarter.

§ The combined ratio was 90.6% for the quarter compared to 93.1% for the first quarter 2002.

Brian Duperreault, Chairman and Chief Executive Officer of ACE Limited, commented: "This was a good quarter for us by any standard of measurement. We were able to demonstrate the earning power we have been building over the last three years. We benefited from growth in earned premiums, improved underwriting margins and strong positive cash flow. However, low investment yields limited our growth in investment income to 3%, which continues to lag the growth in underwriting income. Our annualized ROE from operations was 16.7%.( 3 ) In summary, an excellent start for the current fiscal year."

Please refer to the ACE Financial Supplement, which is posted on the Company's website, for more detailed information on individual segment performance, together with additional disclosure on reinsurance recoverable, loss reserves, financial guaranty portfolio, investment portfolio and capital structure. ACE's website reference (url) is http://media.corporate-ir.net/media_files/nys/ace/reports/fin_supp_march_31_2003.xls.

ACE Limited (NYSE: ACE) will host a live webcast of its first quarter earnings conference call on Wednesday, April 30, 2003, beginning at 8:30 a.m. EST. The public may access both the webcast, available on a listen-only basis, and the financial supplement at www.acelimited.com. Please refer to our website under "Investor Information Calendar of Events", one half hour before, for further webcast details. Individuals who access the webcast will be asked to identify themselves and their affiliation. A replay of the webcast will be available following the live webcast on Wednesday, April 30, 2003 until Wednesday, May 14, 2003 at 5:00 p.m. EDT.

The ACE Group of Companies provides insurance and reinsurance for a diverse group of clients. The ACE Group conducts its business on a global basis with operating subsidiaries in nearly 50 countries. Additional information can be found at: www.acelimited.com.

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1Net operating income (loss) is a common performance measurement and is defined as net income (loss) excluding net realized gains (losses) on investments and the tax effect of net realized gains (losses) on investments. We believe this presentation of net operating income (loss) enhances the understanding of our results of operations by highlighting the underlying profitability of our insurance business. We exclude net realized gains (losses) on investments from net operating income (loss) because the amount of these gains (losses) is heavily influenced by, and fluctuates in part, according to the availability of market opportunities. Net operating income (loss) should not be viewed as a substitute for net income

determined in accordance with generally accepted accounting principles (GAAP).

2Annualized operating return on equity is calculated using net operating income (loss) less mezzanine equity dividend divided by average

shareholders' equity for the period.

3Diluted book value per share is shareholder's equity and net proceeds from assumed conversions of outstanding in-the-money options divided by

the sum of shares outstanding and the number of options assumed issued.