ACE LTD
8-K, 1998-04-16
FIRE, MARINE & CASUALTY INSURANCE
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<PAGE>
 
                      SECURITIES AND EXCHANGE COMMISSION
                            Washington D.C.  20549



                                   FORM 8-K



                                Current Report

                    Pursuant to Section 13 or 15(d) of the
                        Securities Exchange Act of 1934



Date of Report (Date of earliest event reported) April 1, 1998
                                                 -------------


                                  ACE LIMITED
- --------------------------------------------------------------------------------
            (Exact name of registrant as specified in its charter)

 
Cayman Islands                       1-11778                   Not Applicable
- --------------------------------------------------------------------------------
(State or other jurisdiction       (Commission                (I.R.S. Employer
of Incorporation)                  File Number)              Identification No.)

The ACE Building
30 Woodbourne Avenue
Hamilton, Bermuda                                  HM 08
- --------------------------------------------------------------------------------
(Address of principal executive offices)         (Zip Code)

Registrant's telephone number, including area code: (441) 295-5200
                                                    --------------

                                Not Applicable
- --------------------------------------------------------------------------------
(Former name or former address, if changed since last report)
<PAGE>
 
Item 2.  Acquisition or Disposition of Assets.

     On April 1, 1998, ACE Limited completed the acquisition of all of
the outstanding shares of capital stock of CAT Limited.  The total consideration
paid in the acquisition was approximately $711 million, subject to certain post-
closing adjustments.

     Included as Exhibit 99.3 to this Current Report on Form 8-K is a copy of
the press release dated April 1, 1998 announcing such completion.

Item 7.    Financial Statements and Exhibits.

     (a)   Audited Financial Statements of CAT Limited.
           See Exhibit 99.1
     
     (b)   Pro Forma Financial Information
           See Exhibit 99.2     

     (c)   Exhibits.

     2.1   Stock Purchase Agreement dated as of March 25, 1998, by and among ACE
           Limited, CAT Limited and the shareholders of CAT Limited
           (Incorporated by reference to Exhibit 2.1 to ACE Limited's
           Registration Statement on Form S-3 (Registration No. 333-49257)).

     99.1  Audited Financial Statements of CAT Limited as of and for the years 
           ended December 31, 1997 and 1996.

     99.2  Unaudited Pro Forma Condensed Consolidated Financial Information of 
           ACE Limited.

     99.3  Press release, dated April 1, 1998

                                       2
<PAGE>
 
                                  SIGNATURES

     Pursuant to the requirements of the Securities Exchange Act of 1934, the
registrant has duly caused this report to be signed on its behalf by the
undersigned thereunto duly authorized.


Dated: April 16, 1998                       ACE LIMITED


                                            By:  Christopher Z. Marshall
                                                 -----------------------
                                                 Christopher Z. Marshall
                                                 Chief Financial Officer
<PAGE>
 
                                 EXHIBIT INDEX

Exhibit
Number                        Description
- -------                       -----------
99.1               Audited Financial Statements of CAT Limited as of and for the
                   year ended December 31, 1997 and 1996

99.2               Unaudited Pro Forma Condensed Consolidated Financial 
                   Information of ACE Limited.

99.3               Press release, dated April 1, 1998

<PAGE>


                                                                    Exhibit 99.1
                         Audited Financial Statements


                                  CAT Limited


                          December 31, 1997 and 1996
<PAGE>
 
                      [LOGO OF ERNST & YOUNG LETTERHEAD]




                        REPORT OF INDEPENDENT AUDITORS



TO THE SHAREHOLDERS OF CAT LIMITED



We have audited the accompanying balance sheets of CAT Limited as of December
31, 1997 and 1996 and the related statements of income, shareholders' equity and
cash flows for the years then ended. These financial statements are the
responsibility of the company's management. Our responsibility is to express an
opinion on these financial statements based on our audits.

We conducted our audits in accordance with auditing standards generally accepted
in the United States. Those standards require that we plan and perform the audit
to obtain reasonable assurance about whether the financial statements are free
of material misstatement. An audit includes examining, on a test basis, evidence
supporting the amounts and disclosures in the financial statements. An audit
also includes assessing the accounting principles used and significant estimates
made by management, as well as evaluating the overall financial statement
presentation. We believe that our audits provide a reasonable basis for our
opinion.

In our opinion, the financial statements referred to above present fairly, in
all material respects, the financial position of the company at December 31,
1997 and 1996 and the results of its operations and its cash flows for the years
then ended in conformity with accounting principles generally accepted in the
United States.


                                                               /s/ Ernst & Young

Hamilton, Bermuda
January 20, 1998




<PAGE>

                                  CAT LIMITED
                           (Incorporated in Bermuda)

                                BALANCE SHEETS

                          DECEMBER 31, 1997 AND 1996
 (expressed in thousands of United States dollars except share and per share 
                                   amounts)
<TABLE> 
<CAPTION> 
                                                                    1997        1996
                                                                    ----        ----
<S>                                                               <C>          <C> 
                                     ASSETS

Fixed maturity securities at fair value (amortized cost $398,442
  and $365,045 at December 31, 1997 and 1996,
  respectively) (Note 3)                                          $399,540     $363,865
Investment in insurance linked securities (Note 3)                  19,406         -
Short term investments (Note 3)                                     33,831       17,437
Equity securities at fair value (Note 3)                            28,009       10,165
                                                                  --------     --------
Total investments                                                  480,786      391,467

Cash and cash equivalents                                           35,133       73,393
Investment in Enterprise (Note 7)                                   72,597         -
Premiums receivable                                                 17,133       21,114
Prepaid reinsurance premium (Note 5)                                 1,571         -
Accrued interest                                                     6,337        4,200
Other assets (Note 7)                                                1,777        4,612
Deferred policy acquisition costs                                    2,354        2,446
Net fixed assets                                                       443          186
                                                                  --------     --------
Total Assets                                                      $618,131     $497,418
                                                                  ========     ========

                                    LIABILITIES

Contract liabilities and accruals:
 Reserve for losses, loss expenses and experience
   refunds (Note 4)                                               $ 36,862     $ 42,121
 Unearned premium                                                   24,411       25,420
 Reinsurance balances payable (Note 5)                               1,469         -
Accrued expenses (Note 6)                                            8,776        6,853
Liability for call options                                           6,173         -
                                                                  --------     --------
Total Liabilities                                                   77,691       74,394
                                                                  --------     --------
Commitments and Contingencies (Note 8)

                                SHAREHOLDERS' EQUITY
                               (Notes 6, 9, 10 and 12)

Voting common stock, $1.00 par value 4,620,000 shares
 authorized; 2,694,497 shares issued and outstanding                 2,695        2,695
Additional paid in capital                                         251,995      251,995
Net unrealized gains (losses) on investments                        18,728       (1,015)
Retained earnings                                                  267,022      169,349
                                                                  --------     --------
Total Shareholders' Equity                                         540,440      423,024
                                                                  --------     --------

Total Liabilities and Shareholders' Equity                        $618,131     $497,418
                                                                  ========     ========
</TABLE> 
 
                       See notes to financial statements
<PAGE>
                                  CAT LIMITED

                             STATEMENTS OF INCOME

                          DECEMBER 31, 1997 AND 1996
    (expressed in thousands of United States dollars except per share data)

<TABLE> 
<CAPTION> 

                                                  1997         1996
                                                --------     --------
<S>                                             <C>          <C> 
Premiums written (Note 6)                       $147,152     $136,186
Premiums ceded (Note 5)                          (11,270)        (357)
                                                --------     --------
Net premiums written                             135,882      135,829
Decrease (increase) in unearned premiums           2,579        5,309
                                                --------     --------
Premiums earned                                  138,461      141,138

Net investment income (Note 3)                    23,207       25,056
Realized (losses) gains on sales of
 investments (Note 3)                               (242)         157
                                                --------     --------
Total revenue                                    161,426      166,351
Losses, loss expenses and experience refunds
 (Notes 4 and 6)                                  25,627       56,731
Policy acquisition costs                          13,873       13,641
Administration                                    10,983        7,508
Consulting and technology services
 (Note 8)                                          5,193        3,599
                                                --------     --------
Total expenses                                    55,676       81,479
                                                --------     --------
Net income                                      $105,750     $ 84,872
                                                ========     ========
</TABLE> 

                       See notes to financial statements
<PAGE>

                                  CAT LIMITED

                           STATEMENTS OF CASH FLOWS

                    YEARS ENDED DECEMBER 31, 1997 AND 1996
               (expressed in thousands of United States dollars)

<TABLE> 
<CAPTION> 

                                                           1997         1996
                                                           ----         ----   
<S>                                                     <C>          <C> 
Cash Flows from Operating Activities:                                           
  Net income                                            $105,750     $ 84,872  
  Adjustments to reconcile net income to cash                                   
  provided by operating activities:                                             
     Realized losses (gains) on sales of                                        
        investments                                          242         (157)  
     Amortization of premium on debt securities              834        1,002   
     Depreciation                                            122          229   
     Premiums receivable                                   3,981        8,921   
     Other assets                                            790       (3,451)  
     Prepaid reinsurance premium                          (1,571)         -    
     Unearned premium                                     (1,009)      (5,309)  
     Reserve for losses, loss expenses and                                      
        experience refunds                                (5,259)       8,490   
     Reinsurance balances payable                          1,469          (31)  
     Other liabilities                                     1,923        1,874   
                                                        --------     --------  
  Net cash provided by operating activities              107,272       96,440   
                                                        --------     --------  
Cash Flows from Investing Activities:                                           
  Proceeds from sales and paydowns                                              
     on fixed maturity securities                        677,191      329,732   
  Purchases of fixed maturity securities                (711,481)    (443,589)  
  Net sales (purchases) of short-term investments        (16,551)      (7,439)  
  Purchase of equity securities                          (15,004)     (10,000)  
  Purchase of investment in Enterprise                   (60,000)         -     
  Purchase of insurance linked securities                (19,308)         -     
                                                        --------     --------  
                                                        (145,153)    (131,296)  
  Fixed asset purchases                                     (379)          (8)  
                                                        --------     --------   
  Net cash used in investing activities:                (145,532)    (131,304)  
                                                        --------     --------  
Cash flows from Financing Activities:                                           
  Proceeds from borrowings                               100,000          -     
  Repayment of borrowings                               (100,000)         -     
  Decrease in due to shareholder (Note 6)                    -        (31,869)  
                                                        --------     --------  
  Net cash used in financing activities                      -        (31,869)  
                                                        --------     --------   
Net decrease in cash and cash equivalents                (38,260)     (66,733)  
                                                                                
Cash and cash equivalents, beginning of year              73,393     (140,126)  
                                                        --------     --------   
Cash and cash equivalents, end of year                   $35,133     ($73,393)
                                                        ========     ========
</TABLE> 

                       See notes to financial statements
<PAGE>


                                  CAT LIMITED

                      STATEMENTS OF SHAREHOLDERS' EQUITY

                    YEARS ENDED DECEMBER 31, 1997 AND 1996
    (expressed in thousands of United States dollars except share amounts)

<TABLE> 
<CAPTION> 

                                                              Unrealized
                                              Additional        Gains                         Total
                                   Common      Paid In       (Losses) on       Retained    Shareholders'
                                   Stock       Capital       Investments       Earnings       Equity
                                   ------     ----------     -----------       --------    -------------
<S>                               <C>         <C>            <C>               <C>         <C> 
Balance, December 31, 1995         $2,695       $251,995         $ 1,429       $ 84,477         $340,596

Net income                              -              -               -         84,872           84,872
Change in unrealized gains
 (losses) on investments                -              -          (2,444)             -           (2,444)
                                   ------     ----------     -----------       --------    -------------
Balance, December 31, 1996          2,695        251,995          (1,015)       169,349          423,024

Net income                              -              -               -        105,750          105,750
Change in unrealized gains
 (losses) on investments                -              -          19,743              -           19,743
Dividends issued (Note 7)               -              -               -         (8,077)          (8,077)
                                   ------     ----------     -----------       --------    -------------
Balance, December 31, 1997         $2,695       $251,995         $18,728       $267,022         $540,440
                                   ======     ==========     ===========       ========    =============
</TABLE> 


                       See notes to financial statements
<PAGE>
 
                                  CAT LIMITED

                       NOTES TO THE FINANCIAL STATEMENTS

                          DECEMBER 31, 1997 AND 1996
(amounts in tables expressed in thousands of United States dollars except share 
                            and per share amounts)


1.   Operations

     CAT Limited (the "Company") specializes in writing property catastrophe
     reinsurance around the world. Approximately two-thirds of this business is
     accepted from the United States with the remainder distributed throughout
     the rest of the world, principally Canada, Australia and Europe.

     The Company was incorporated in Bermuda on May 21, 1993 as Centre Cat
     Limited.

     The Company is planning an initial public offering of its Common Shares and
     in that regard in December 1997 submitted a draft registration statement to
     the U.S. Securities and Exchange Commission.

2.   Significant accounting policies

     The financial statements of the Company have been prepared on the basis of
     accounting principles generally accepted in the United States ("U.S.
     GAAP"). Significant accounting policies are summarized as follows:

     (a)  Investments

          Investments, which include fixed maturity securities, short-term
          investments, equity securities, interest rate swaps and insurance
          linked securities, are carried at fair value. Insurance linked
          securities are contracts that contain insurance risk and include fixed
          maturity instruments ("catastrophe bonds"), and options and swaps.
          Realized gains or losses on the sale or maturity of investments are
          determined by specific identification and are included in earnings.

          Fixed maturity securities, short-term investments, equity securities
          and catastrophe bonds are considered available for sale. The fair
          value is determined from published market prices or independent
          valuations. The amortized cost of fixed maturity securities and
          catastrophe bonds includes the amortization and accretion of premiums
          and discounts and factors prepayment rates when applicable. Unrealized
          gains or losses are recognized as a separate component of
          shareholders' equity.

          The Company participates in interest rate swap agreements to modify
          the interest rate characteristics of its investment portfolio and
          hedge designated debt securities. The interest rate differential, to
          be paid or received as interest rates change, is accrued and
          recognized as an adjustment to interest income associated with the
          corresponding designated securities. The related amount payable to or
          receivable from counterparties is included in accrued interest.
          Changes in the fair market value of these swap agreements are included
          in a separate component of shareholders' equity. Gains and losses on
          terminations of interest-rate swap agreements are deferred and
          recognized as an adjustment to the amortized cost of the specified
          debt securities. In the event of the early maturity or sale of a
          designated investment security, the portion of the unrealized gain or
          loss on the swap allocated to the disposed debt security is realized.

<PAGE>
 
                                  CAT LIMITED

                  NOTES TO THE FINANCIAL STATEMENTS, Cont'd.

                          DECEMBER 31, 1997 AND 1996
(amounts in tables expressed in thousands of United States dollars except share 
                            and per share amounts)


2.   Significant accounting policies, cont'd.

          Insurance linked options and swaps include contracts that are valued
          based on certain meteorological or seismological conditions at defined
          locations, and contracts that contain insurance risk. Income or loss
          on these contracts is included in earnings and is derived from the net
          amounts received or paid, gains and losses on terminations (of swap
          agreements) and the difference between the fair value and the cost (of
          swap agreements). The fair value of all contracts is based on an
          option valuation model due to the lack of a ready market. Changes in
          fair value are recognized in earnings.

     (b)  Cash and Cash Equivalents

          Cash and cash equivalents are defined as cash and certain highly
          liquid investments with a maturity date of three months or less from
          the date of purchase.

     (c)  Premiums

          Premiums written include all one-year contracts plus the annualized
          value of multiple-year contracts. Reinsurance premiums are recognized,
          net of any applicable retrocessional coverage, as revenue evenly over
          the terms of the particular contracts.

     (d)  Policy Acquisition Costs

          Policy acquisition costs such as brokerage and certain other
          underwriting expenses vary with and are directly related to the
          production of business. Such costs are deferred to the extent
          recoverable from future earned premium and anticipated investment
          income, and amortized evenly over the terms of the particular
          contracts.

     (e)  Losses, Loss Expenses and Experience Refunds

          The reserve for losses, loss expenses and experience refunds
          represents estimates of the ultimate cost of all losses and experience
          refunds incurred but not paid through December 31 of each year.

          The loss estimates include reserves based on reports from ceding
          companies and additional case reserves as determined by management.
          Inherent in the estimates of ultimate losses are expected trends in
          claim severity and other factors that could vary as claims are
          settled. Accordingly, ultimate losses could differ from the amounts
          recorded in the financial statements. As adjustments become necessary,
          such adjustments are reflected in current operations.

          The reserve for experience refunds represents estimates of the total
          liability incurred under profit commission provisions of various
          contracts. These estimates are continually reviewed and, as
          adjustments become necessary, such adjustments are reflected in
          current operations. Since the reserve is based on estimates, the
          ultimate settlement of experience refunds may vary from the amount
          provided.

          The Company recognizes an asset or liability to the extent that there
          is an obligation to receive or pay cash or other consideration due to
          experience under the contracts.

<PAGE>
 
                                  CAT LIMITED

                  NOTES TO THE FINANCIAL STATEMENTS, Cont'd.

                          DECEMBER 31, 1997 AND 1996
(amounts in tables expressed in thousands of United States dollars except share 
                            and per share amounts)


2.   Significant accounting policies, cont'd.

     (f)  Depreciation

          Depreciation is provided on property and equipment over the expected
          useful lives of the assets on a straight-line basis.

     (g)  Foreign Currencies

          Foreign currency monetary assets and liabilities are translated into
          U.S. Dollars at rates prevailing on balance sheet dates. Revenue and
          expenses are translated at the rates prevailing on the date of the
          transactions. Gains or losses arising from foreign currency
          transactions are credited or charged to income. The Company's
          functional currency is the U.S. dollar.

     (h)  Stock Options and Equity Award Agreements

          The Company continues to follow Accounting Principles Board Opinion
          No. 25 ("APB 25") and related interpretations in accounting for its
          stock options and equity award agreements payable in stock, and
          disclosures have been made in accordance with Financial Accounting
          Standard Statement No. 123 ("FAS 123") to the extent applicable.

          No compensation expense was recognized at the time equity awards were
          issued (except for an accrual for cash paid or given up to purchase
          the awards), since there was no intrinsic value inherent in the awards
          at the time. No compensation expense has been recorded for
          appreciation of the awards to become exercisable or settled (a change
          of control, liquidation, or in certain cases, an initial public
          offering of Company Shares) have not been satisfied.

     (i)  Use of Estimates

          The preparation of the financial statements in conformity with
          generally accepted accounting principles requires management to make
          estimates and assumptions that affect certain amounts reported in the
          financial statements and accompanying notes. Actual results could
          differ from those estimates. Management believes that any such
          differences will not be significant.

     (j)  Pending Accounting Standard

          The Financial Accounting Standard Board has recently issued Statement
          of Financial Accounting Standard No. 130 ("FAS 130"), Reporting
          Comprehensive Income. FAS 130 is effective for periods beginning after
          December 15, 1997. The Company is currently considering the effects of
          this statement on the Company's financial statement presentation and
          disclosures.

<PAGE>
 
                                  CAT LIMITED

                  NOTES TO THE FINANCIAL STATEMENTS, Cont'd.

                          DECEMBER 31, 1997 AND 1996
(amounts in tables expressed in thousands of United States dollars except share
                            and per share amounts)


3.   Investments
     -----------

     Total fixed maturities and certain equity securities are managed by Miller,
     Anderson & Sherrerd, LLC ("MAS") and Zurich Investment Management, Inc.
     (formerly Centre Investment Services, Inc.) ("CIS"), pursuant to investment
     management agreements. MAS and CIS are affiliates of certain shareholders.

     The following is a summary of investments available for sale as at December
     31:

<TABLE> 
<CAPTION> 
                                         Cost or      Gross         Gross      Estimated
                                        Amortized   Unrealized    Unrealized      Fair  
                                          Cost        Gains         Losses       Value  
                                        ---------   ----------    ----------   --------- 
      1997
      ----
<S>                                     <C>         <C>           <C>          <C> 
     U.S. Treasury securities and                                                           
       obligations of U.S.                                                                  
       government agencies              $ 143,322   $      520    $      123   $ 143,719
     Mortgage backed securities           113,267        1,240           285     114,222     
     Asset backed securities              117,202          396           165     117,433    
     Corporate obligations                 58,479          833         1,315      57,997      
                                        ---------   ----------    ----------   --------- 
     Total fixed maturities and
       short-term investments             432,270        2,989         1,888     433,371
     Catastrophe bonds                     20,148          121           -        20,269
     Equity securities                     25,003        3,006           -        28,009
                                        ---------   ----------    ----------   --------- 
     Total investments available for
       sale                             $ 477,421   $    6,116    $    1,888   $ 481,649
                                        =========   ==========    ==========   ========= 
</TABLE> 

     Insurance linked securities include the catastrophe bonds of $20,269,000
     together with heating index options with a fair value of $(863,000).

<PAGE>
 
 
                                  CAT LIMITED

                  NOTES TO THE FINANCIAL STATEMENTS, Cont'd.

                          DECEMBER 31, 1997 AND 1996
(amounts in tables expressed in thousands of United States dollars except share
                            and per share amounts)


3.   Investments available for sale, cont'd.
     ---------------------------------------

<TABLE> 
<CAPTION> 
                                         Cost or      Gross         Gross      Estimated
                                        Amortized   Unrealized    Unrealized      Fair  
                                          Cost        Gains         Losses       Value  
                                        ---------   ----------    ----------   --------- 
     1996
     ----
<S>                                     <C>         <C>           <C>          <C> 
     U.S. Treasury securities and                                                           
       obligations of U.S.                                                                  
       government agencies              $ 106,756   $       85    $      399   $ 106,442
     Mortgage backed securities           136,777          375         1,668     135,484     
     Asset backed securities              101,973          504           239     102,238    
     Corporate obligations                 36,976          224            62      37,138      
                                        ---------   ----------    ----------   --------- 
     Total fixed maturities and
       short-term investments             382,482        1,188         2,368     381,302
     Equity securities                     10,000          165           -        10,165
                                        ---------   ----------    ----------   --------- 
     Total investments available
       for sale                         $ 392,482   $    1,353    $    2,368   $ 391,467
                                        =========   ==========    ==========   ========= 
</TABLE> 

     The amortized cost and estimated fair value of debt securities at December
     31, 1997, by contractual maturity, are shown below. Expected maturities may
     differ from contractual maturities in cases where the issuers of the
     securities have the right to prepay obligations without prepayment
     penalties.

<TABLE> 
<CAPTION> 

                                                        Cost or       Estimated
                                                       Amortized         Fair
                                                          Cost          Value
                                                       ---------      --------- 
<S>                                               <C>            <C> 
     Due in one year or less                           $  49,989      $  50,020
     Due after one year through five years               122,386        122,591
     Due after five years through ten years               19,134         18,664
     Due after ten years                                  10,292         10,441
     Mortgage and asset backed securities                230,469        231,655
                                                       ---------      --------- 
     Total fixed maturities and
       short-term investments                            432,270        433,371
     Catastrophe bonds due in one year or less            14,148         14,215
     Catastrophe bonds due after five years              
       through ten years                                   6,000          6,054
                                                       ---------      --------- 

                                                       $ 452,418      $ 453,640  
                                                       =========      =========  
</TABLE> 

<PAGE>
 
                                  CAT LIMITED

                  NOTES TO THE FINANCIAL STATEMENTS, Cont'd.

                          DECEMBER 31, 1997 AND 1996
      (amounts in tables expressed in thousands of United States dollars
                      except share and per share amounts)

3.   Investments available for sale, cont'd.

     Net investment income is comprised of the following:

<TABLE> 
<CAPTION> 
                                                          Years ended 
                                                          December 31,
                                                      -------------------
                                                       1997        1996
                                                      -------------------
     <S>                                              <C>         <C> 
     Fixed maturities and short-term investments      $23,459     $19,658
     Equity securities                                     --          --
     Cash and cash equivalents                          3,887       6,112
     Catastrophe bonds                                    339          --
     Other                                             (2,529)        210
                                                      -------     -------
                                                       25,156      25,980
     Investment expenses                                 (748)       (724)
     Foreign exchange                                  (1,201)       (200)
                                                      -------     -------
     Net investment income                            $23,207     $25,056
                                                      =======     =======
</TABLE> 

     The analysis of realized gains (losses) and the change in unrealized gains
     (losses) on investments is as follows:

<TABLE> 
<CAPTION> 
                                                          Years ended 
                                                          December 31,
                                                      -------------------
                                                       1997        1996
                                                      -------------------
     <S>                                              <C>         <C> 
     Gross realized gains                             $ 1,266     $   988
     Gross realized losses                             (1,508)       (831)
                                                      -------     -------
     Net realized (losses) gains on sale of 
       investments                                       (242)        157
     Unrealized gains (losses)                         19,743      (2,444)
                                                      -------     -------
     Total realized and unrealized gains (losses)
       on investments                                 $19,501     $(2,287)
                                                      =======     =======
</TABLE> 

     The carrying values of other financial instruments approximate their fair 
     value due to the short term nature of the balances.

<PAGE>
 
                                  CAT LIMITED

                  NOTES TO THE FINANCIAL STATEMENTS, Cont'd.

                          DECEMBER 31, 1997 AND 1996
      (amounts in tables expressed in thousands of United States dollars
                      except share and per share amounts)

3.   Investments available for sale, cont'd.

     During the year, the Company entered into one interest rate swap with a
     maturity date of April 25, 2007. The agreement entitles the Company to
     receive from the counterparty on a quarterly basis 3 month LIBOR and pay a
     fixed rate of 7.253% on a semi-annual basis. The notional amount of the
     swap is $10,000,000. This notional amount does not represent an amount
     exchanged by the parties and is not a measure of the Company's exposure
     through the use of derivatives. The Company is exposed to credit related
     losses in the event of non-performance by the counterparty to the swap
     agreement, however, the Company does not expect the counterparty to fail.

     At December 31, 1997, the swap had a fair market value of $(699,000) and
     this was recorded with unrealized gains on investments as a separate
     component of shareholder's equity. The Company had a net interest expense
     of $92,000 on this swap for the year.

4.   Losses, loss expenses and experience refunds

     The activity in the reserve for losses, loss expenses and experience 
     refunds is summarized below.

<TABLE> 
<CAPTION> 
                                                        1997       1996
                                                      --------    -------
     <S>                                              <C>         <C> 
     Balance, beginning of year                       $ 42,121    $33,631
     Adjust for experience refunds                     (16,432)    (8,281)
                                                      --------    -------
     Loss reserve balance, beginning of year            25,689     25,350
                                                      --------    -------
     Losses incurred related to:
       Current year                                     22,541     44,079
       Prior years                                      (4,526)     3,921
                                                      --------    -------
     Total losses incurred                              18,015     48,000
                                                      --------    -------

     Losses paid related to
       Current year                                      6,089     25,179
       Prior years                                      15,334     22,482
                                                      --------    -------
     Total losses paid                                  21,423     47,661
                                                      --------    -------

     Loss reserve balance, end of year                  22,281     25,689

     Adjust for experience refunds                      14,581     16,432
                                                      --------    -------

     Balance, end of year                             $ 36,862    $42,121
                                                      ========    =======

</TABLE> 
<PAGE>
 

                                  CAT LIMITED

                  NOTES TO THE FINANCIAL STATEMENTS, Cont'd.

                          DECEMBER 31, 1997 AND 1996
(amounts in tables expressed in thousands of United States dollars except share 
                            and per share amounts)



4.   Losses, loss expenses and experience refunds, cont'd.

     Losses incurred in 1996 relating to prior years are due primarily to the
     January 17, 1994 Northridge, California earthquake and floods in Europe.
     The reduction of losses in respect or prior years, in the year ended
     December 31, 1997, reflects favourable development of certain events
     causing ultimate losses to fall below the cedants' retentions.
     Corresponding reinstatement premiums receivable have been accrued for the
     effect of prior year losses.

     The Company has exposure to loss from ice storms in Canada which occurred
     subsequent to year end. The current estimate of the gross loss before
     retrocessional recoveries or reinstatement premium is approximately
     $12,000,000. The current range of estimated loss does not impact the
     Company's financial position significantly.

5.   Ceded reinsurance

     During 1997, the Company utilized reinsurance to reduce its exposure to
     large losses. The Company currently has in place contracts that provide for
     recovery of certain claims and claims expenses from reinsurers in excess of
     various retentions. If reinsurers are unable to meet their obligations
     under the agreements, the Company would remain liable to the extent that
     any reinsurance company fails to meet its obligations. To date, there have
     been no losses reported to indicate that the Company's reinsurance coverage
     will be reached, and there are no amounts recoverable for claims and claim
     expenses from reinsurers.

6.   Transactions with affiliated parties

     The Company reinsures several companies whose ultimate parents, the Zurich
     Insurance Group ("Zurich") and the Chubb Insurance Group, are also the
     ultimate parents of two of the Company's shareholders. In 1997 and 1996
     written premiums from this business totaled $5,321,709 and $9,119,000
     respectively.

     Prior to the Company obtaining a rating from A.M. Best and where a rating
     was instrumental to the transaction, the Company assumed business as a
     retrocession of a rated reinsurer, Centre Solutions (Bermuda) Limited
     ("Centre Solutions"), (formerly Centre Reinsurance Limited), whose ultimate
     parent is Zurich. In 1997 and 1996, transactions of this nature took place
     involving ceding commissions to Centre Solutions of $1,055,000 and
     $1,270,000 respectively.

     In 1995, the Company gave a guarantee to Centre Solutions for part of their
     direct investment in CHA Insurance Company Limited ("CHA"). An amount of
     $750,000 is included in accrued expenses as due to Centre Solutions
     representing the amount of loss the Company expects to incur under the
     guarantee.

     In 1995, the Company agreed to repurchase 234,954 Common Shares from Centre
     Solutions for $135.64 per share. This agreement with Centre Solutions was
     approved by the Board of Directors at a meeting on December 5, 1995 and the
     settlement occurred in January 1996. As a result of the repurchase the
     Company ceased to be controlled by Centre Solutions.
<PAGE>
 

                                  CAT LIMITED

                  NOTES TO THE FINANCIAL STATEMENTS, Cont'd.

                          DECEMBER 31, 1997 AND 1996
(amounts in tables expressed in thousands of United States dollars except share 
                            and per share amounts)



7.   Acquisition of Enterprise

     On January 17, 1997 the Company made a $60,000,000 investment in Enterprise
     Reinsurance Holdings Corporation ("Enterprise"), which is owned by the
     Company, its shareholders and other third parties. The Company is obligated
     to guarantee 50% of certain indebtedness of Enterprise (the "Enterprise
     Guarantee"), such indebtedness being limited to an aggregate principal
     amount of $100,000,000 for period of not more than five years. Currently
     there is no such indebtedness outstanding. The Company may unilaterally
     terminate the guarantee upon the occurrence of certain corporate events,
     including an initial public offering of its Common Shares, and has notified
     Enterprise that the Enterprise Guarantee will terminate upon consummation
     of the Offering. Immediately following this investment, the Company
     dividend to its stockholders $1,904,000 of its holdings of Enterprise's
     stock and issued a dividend to its shareholders consisting of options (the
     "Call Options") to purchase most of the remaining stock of Enterprise held
     by the Company.

     The value of the Call Options of $6,173,000 was estimated using a binomial
     option pricing model.

     Included in other assets at December 31, 1996 is $2,080,000 of promissory
     notes, payable on demand, and with interest accruing at 6% to 8%, which had
     been advanced for the startup costs of Enterprise. In addition, the Company
     guaranteed Enterprise's lease agreement for office space. In January 1997,
     the promissory notes were repaid in full and the lease guarantee was
     released.

8.   Commitments and contingencies

     On October 13, 1993, the Company entered into a services agreement
     ("Services Agreement") with Hamilton Services Limited ("Hamilton"), whereby
     the Company is required to pay a regular monthly fee to Hamilton for
     licensed software products and related service and support functions. Such
     monthly fee equaled $345,000. In addition, under the Services Agreement,
     the Company is obligated to pay an additional monthly expansion fee based
     on budgeted operational costs of Hamilton in proportion to the business
     related to or arising out of services provided pursuant to the Services
     Agreement, as determined each fiscal quarter. The aggregate amount of such
     fee payable in any 12-month period may not exceed $7,000,000. For the years
     ended December 31, 1997 and 1996, the total fees paid to Hamilton were
     $5,340,000 and $4,140,000.


<PAGE>
 
                                  CAT LIMITED

                  NOTES TO THE FINANCIAL STATEMENTS, Cont'd.

                          DECEMBER 31, 1997 AND 1996
(amounts in tables expressed in thousands of United States dollars except share 
                            and per share amounts)



8.   Commitments and contingencies, cont'd.

     The Services Agreement also requires the Company to pay Hamilton contingent
     fees to reimburse Hamilton for certain amounts represented by equity award
     units under an equity award plan adopted in 1993 payable by Hamilton to its
     employees, which amounts are dependent, typically, upon the adjusted book
     value of the Company's Common Shares. The contingent amounts are payable to
     Hamilton upon the occurrence of, among other things, an initial public
     offering of Company's Common Shares and subject to the continued employment
     of the employees with Hamilton. The Company is obligated to reimburse
     Hamilton in cash, or in certain instances, for specified units, in Common
     Shares. The reimbursement amount is determined by reference to the excess
     of the adjusted net book value of the Company's Common Shares on the date
     of the specified event over a base price ($200.57 for 3,281 units, $157 for
     11,159 units, $126.40 for 137,246 units, $102.52 for 9,560 units $99.02 for
     2,104 units and $100.00 for 141,853 units). No amounts have been recorded
     by the Company, as of December 31, 1997, except for the cash paid to
     purchase 12,223 units, because a combination of conditions were required to
     be met, but were not considered probable as at that date. As of December
     31, 1997 and 1996 respectively, and have a term of one year.

     To secure certain reinsurance contracts, irrevocable letters of credit of
     $6,319,900 and $9,820,000 were outstanding at December 31, 1997 and 1996
     respectively. These letters of credit were secured by treasury notes with a
     market value of $6,513,500 and $12,283,000 at December 31, 1997 and 1996
     respectively, and have a term of one year.

     On February 20, 1997 the Company closed on a new five year, unsecured
     $100,000,000 revolving credit facility. The transaction canceled the
     previous $50,000,000 secured credit facility which was replaced by a
     $30,000,000 letter of credit agreement, transferring the same collateral to
     the new facility, as described above.

9.   Stock options and equity award agreements

     (a)  Stock Options

          Option agreements with a current director and a shareholder who had
          been a director vest in accordance with the dates in the following
          table, or at an earlier date upon the occurrence of certain corporate
          and other events.



<PAGE>

                                  CAT LIMITED

                  NOTES TO THE FINANCIAL STATEMENTS, Cont'd.

                          DECEMBER 31, 1997 AND 1996
(amounts in tables expressed in thousands of United States dollars except share 
                            and per share amounts)


 
9.   Stock options and equity award agreements, cont'd.

<TABLE> 
<CAPTION> 

          Exercise            Number of Shares            Exercise             
            Date                Under Option                Price
          --------            ----------------            --------
         <S>                  <C>                        <C> 
        October 13, 1994           4,239                   $100.00
        October 13, 1995           4,239                    100.00
        October 13, 1996           4,239                    100.00
        October 13, 1997           4,239                    100.00
        January 1, 1998            2,000                    157.00
        October 13, 1998           4,239                    157.00
        October 13, 1999           4,239                    157.00
        October 13, 2000           4,239                    157.00
        October 13, 2001           4,239                    157.00
                                  ------
                  
                                  35,912
                                  ======

</TABLE> 

          No options had been exercised as of December 31, 1997. During 1995,
          option agreements dated October 13, 1993 with shareholders relating to
          254,348 shares were relinquished.

          The Company has adopted the disclosure-only alternative under FAS 123.
          The effects of applying the fair value accounting provisions of FAS
          123 to the Company's stock options results in net income that is not
          materially different from the amount reported.

     (b)  Equity award agreements

          Under the Company's Equity Award Plan adopted in 1994, equity award
          units ("units") have been issued by the Company to certain employees.
          The total units granted as of December 31, 1997 amounted to 110,293.

          Generally, settlement of the units is contingent on employment with
          the Company at the time of the payment event. However, the award
          agreements currently provide for partial vesting in the event of
          certain types of termination of employment. The settlement price
          ("settlement price") is determined by reference to the excess of
          adjusted net book value of the Company's Common Shares on the
          specified date over a base price ($200.57 for 1,500 units, $157.00 for
          12,320 units, $126.40 for 59,667 units and $100.00 for 36,806 units)
          or, in the case of certain specified corporate events, such as a
          change of control or liquidation of the Company, the excess of the
          price paid in such an event over the base price.

          Upon the occurrence of among other things, an initial public offering
          of Company Common Shares, provided that certain performance criteria
          shall have been met, 62,441 of these units become payable in cash or,
          at the option of the Compensation Committee, in Common Shares ("share
          units"), and 47,852 become payable in cash ("cash units").
<PAGE>
 
                                  CAT LIMITED

                  NOTES TO THE FINANCIAL STATEMENTS, Cont'd.

                          DECEMBER 31, 1997 AND 1996
(amounts in tables expressed in thousands of United States dollars except share 
                            and per share amounts)


9.   Stock options and equity award agreements, cont'd.

          Other equity award units, which have been granted as bonus payments
          ("bonus units"), have been accrued based on the book value of the
          Company's Common Shares as at the fiscal year end in the year of
          service. The bonus units outstanding under the Company's Equity Award
          Plan amounted to 4,154 at December 31, 1997. these bonus units become
          payable in cash upon the occurrence of certain corporate events,
          including an initial public offering of Company Common Shares.
          Settlement price is determined based on the book value of the
          Company's Common Shares on the specified date, or in a corporate
          event, the price paid for each Common Share in such event.

          In addition, in 1997 and 1994, Equity Award Agreements were entered
          into with some directors and a service provider, respectively. These
          agreements have the same features as the bonus units. The cumulative
          unit entitlements under these agreements at December 31, 1997 and 1996
          amounted to 8,367 and 8,091 respectively. Amounts of $863,000 and
          $813,000 had been accrued as of December 31, 1997 and 1996
          respectively, representing the value of the services for which units
          were issued, and was derived from the book value of the Company's
          Common Shares at the time of service.

          The cash, share and bonus units have features that make both their
          ultimate value and realization uncertain and, since the specified
          events were not considered probable at December 31, 1997, no accrual
          has been made as of that date for the settlement price, except as
          described above. Similarly, the appreciation of the fair value
          accounting provisions of FAS 123 to the award units would not result
          in an accrual. Therefore, the calculation of a FAS 123 proforma net
          income effect is not applicable.

10.  Shareholders' equity

     Under provisions of the Bye-Laws of the Company, the voting rights of the
     Common Shares vary, depending on whether the shareholder is a United States
     Person, an Insurance Company Person or a Regulated Shareholder, as defined
     therein.

     During the year ended December 31, 1995, the Company changed its par value
     from $0.10 to $1.00 in order to comply with The Insurance Amendment Act of
     1995.

11.  Income taxes

     Bermuda presently imposes no income, withholding, or capital gains taxes.
     In the event that any such taxes are enacted, the Company is exempt from
     the imposition of any Bermuda tax until March 2016.

<PAGE>
                                 CAT LIMITED 

                  NOTES TO THE FINANCIAL STATEMENTS, Cont'd.

                          DECEMBER 31, 1997 AND 1996
(amounts in tables expressed in thousands of United States dollars except share 
                            and per share amounts)

12.  Statutory information

     The Bermuda Insurance Act 1978 and Related Regulations ("The Act") requires
     the Company to meet a minimum solvency margin. The statutory accounting
     practices used in the preparation of the statutory financial statements do
     not differ materially from the accounting principles employed in the
     preparation of these accounts. Statutory capital and surplus as at December
     31, 1997 and 1996 was $537,650,000 ad $420,186,000 respectively, and the
     amount required to be maintained by the Company was $100,000,000 for 1997
     and 1996. In addition a minimum liquidity ratio must be maintained whereby
     relevant assets, as defined by The Act, must exceed 75% of relevant
     liabilities.

     Statutory restrictions on distributions exist to ensure that the above
     requirements are met. At December 31, 1997 and 1996, the amounts available
     for distribution were $437,650,000 and $320,186,000 respectively.

13.  Comparative figures

     Certain comparative figures have been reclassified to conform to the
     current period's presentation.

<PAGE>

                                                                    Exhibit 99.2

UNAUDITED PRO FORMA CONDENSED CONSOLIDATED FINANCIAL INFORMATION OF ACE LIMITED

     On April 1, 1998, ACE Limited (the "Company" or "ACE") completed the 
acquisition of CAT Limited ("CAT"), a privately held, Bermuda based property 
catastrophe reinsurer. Under the terms of the agreement, the Company purchased 
all of the outstanding capital stock of CAT for aggregate cash consideration of
approximately $711 million (the "CAT Acquisition"). The Company financed the
transaction with $385 million of short-term bank borrowings from its current
undrawn credit facility established in December 1997, and from cash on hand.

     The following unaudited pro forma condensed consolidated statements of 
operations for the twelve months ended September 30, 1997 and for the three 
months ended December 31, 1997 present operating results of ACE as if the CAT
Acquisition had occurred on October 1, 1996. The unaudited pro forma condensed
consolidated balance sheet as of December 31, 1997 gives effect to the CAT
Acquisition as if it had occurred on December 31, 1997. The unaudited condensed
consolidated financial information of the Company is presented on a pro-forma
basis to reflect the acquisition by the Company of ACE USA (formerly Westchester
Specialty Group, Inc.) which was completed on January 2, 1998 and a 3 for 1 
split of the company's ordinary shares effective March 2, 1998.

     The unaudited pro forma condensed consolidated financial statements should 
be read in conjunction with the consolidated financial statements of ACE,
included in the Company's Annual Report on Form 10-K for the year ended
September 30, 1997, the unaudited consolidated financial statements of ACE
included in the Company's Quarterly Report on Form 10-Q for the quarter ended
December 31, 1997, the audited consolidated financial statements of CAT for the
year ended December 31, 1997 filed with this report and the Form 8-K/A filed on
March 3, 1998 by the Company with respect to the Company's acquisition of ACE
USA. The unaudited pro forma condensed consolidated financial information is not
intended to be indicative of the consolidated results of operations or financial
position of ACE that would have been reported if the CAT Acquisition had
occurred at the dates indicated or of the consolidated results of future
operations or of future financial position.

     The CAT Acquisition has been accounted for as a purchase in accordance with
Generally Accepted Accounting Principles. Under purchase accounting, the total
purchase price is allocated to the acquired assets and liabilities based on
their fair values.

<PAGE>
 
           Unaudited Pro Forma Condensed Consolidated Balance Sheet

<TABLE>
<CAPTION>

                                                                       At December 31, 1997
                                                  ----------------------------------------------------------------
                                                                  (in thousands of U.S. dollars)
                                                                                                     Pro forma
                                                                             Pro forma            combined for CAT
                                                      ACE           CAT     Adjustments   Notes      Acquisition
                                                  ----------------------------------------------------------------
<S>                                               <C>            <C>       <C>           <C>     <C>
Total investments and cash                        $5,301,374     $515,919     $   2,107     (1)
                                                                                 (1,643)    (1)
                                                                                385,000     (3)
                                                                               (691,000)    (4)       $5,511,757
Insurance and reinsurance balances receivable
(including reinsurance recoveries)                   781,078       17,133                                798,211
Investment in Enterprise                                -          72,597       (72,597)    (2)             -
Other assets                                         564,711       12,482         3,143     (1)          580,336
Goodwill                                             195,397                    219,984     (5)          415,381
                                                  ------------------------                            ----------
Total assets                                      $6,842,560     $618,131                             $7,305,685
                                                  ========================                            ==========

Unpaid losses and loss expenses                   $3,309,392     $ 36,862                             $3,346,254
Unearned premiums                                    457,307       24,411                                481,718
Bank debt                                            250,000                  $ 385,000     (3)          635,000
Other liabilities                                    207,309       16,418        (6,173)    (2)
                                                                                  3,607     (1)          
                                                                                  3,000     (4)          224,161
                                                  ------------------------                            ----------
Total liabilities                                 $4,224,008     $ 77,691                             $4,687,133
                                                  ------------------------                            ----------

Total shareholders' equity                         2,618,552      540,440       (66,424)    (2)
                                                                               (474,016)    (6)        2,618,552
                                                  ------------------------                            ----------
Total liabilities and shareholders' equity        $6,842,560     $618,131                             $7,305,685
                                                  ========================                            ==========
</TABLE>
<PAGE>
 
(1)  Reflects the acquisition by CAT of Hamilton Services Limited for $1.6 
     million immediately prior to the CAT Acquisition. This acquisition was
     accounted for under the purchase method of accounting.

(2)  Under the terms of the Stock Purchase Agreement, dated March 25, 1998,
     between ACE, CAT and the Shareholders of CAT (the "Stock Purchase
     Agreement"), CAT's ownership in Enterprise Reinsurance Holdings Corporation
     ("Enterprise") was distributed to CAT's existing shareholders prior to the
     acquisition of CAT by the Company in return for CAT shares. This adjustment
     reflects the disposition of Enterprise for $69 million. The shares 
     received by CAT were retired.

(3)  As part of the financing of the acquisition, ACE borrowed $385 million of
     short-term bank borrowings from its current undrawn credit facility
     established in December 1997, and from cash on hand. The interest rate on 
     the short-term borrowing is approximately 6%.

(4)  Under the terms of the Stock Purchase Agreement, ACE paid a total purchase
     price of approximately $691 million (the total aggregate purchase price of
     $711 million includes an estimate of CAT earnings for first quarter of
     calendar 1998 of $20 million). ACE also incurred direct transaction
     expenses of approximately $3 million.

(5)  Under purchase accounting, the total purchase price is allocated to the
     acquired assets and liabilities assumed based on their fair values. Any
     differences between the cost of the transaction and the fair value of CAT
     net assets acquired would be recorded as goodwill. Based on the purchase
     price paid, ACE will record goodwill of approximately $220 million from
     this transaction. Goodwill is expected to be amortized over 25 years.

(6)  To eliminate CAT's shareholder's equity.

<PAGE>
 
<TABLE> 
<CAPTION> 
                                Unaudited Pro Forma Condensed Consolidated Statements of Operations

                                                                       Three months ended December 31, 1997
                                                      ------------------------------------------------------------------------
                                                           (in thousands of U.S. dollars, except share and per share data)       
                                                                                                             Pro forma
                                                                                 Pro forma                combined for CAT
                                                           ACE       CAT        Adjustments      Notes      Acquisition
                                                      --------------------------------------------------------------------
<S>                                                   <C>          <C>          <C>             <C>         <C>  
Net Premiums Written                                  $   144,858  $  2,912                               $        147,770
                                                      -------------------------------------               ----------------

Net Premiums Earned                                       191,302    35,468                                        226,770   
Net investment income                                      71,298     4,938        $ (4,408)        (1)             71,828
Losses and loss expenses                                 (126,220)  (11,210)                                      (137,430)
Acquisition costs and administrative expenses             (42,506)  (10,517)         (2,200)        (2)            (55,223)  
Interest expense                                           (3,938)        -          (5,744)        (3)             (9,682)
Income tax                                                 (2,088)        -                                         (2,088)
                                                      -------------------------------------               ----------------
Income excluding net realized gains                        87,848    18,679         (12,352)                        94,175
Net realized gains on invesments                           27,492       362                                         27,854
                                                      -------------------------------------               ----------------
Net Income                                            $   115,340  $ 19,041        $(12,352)              $        122,029
                                                      =====================================               ================
 
Basic Earnings per share, excluding realized gains    $      0.53                                         $           0.57
                                                      ===========                                         ================
Basic earnings per share                              $      0.70                                         $           0.74
                                                      ===========                                         ================
Weighted average shares outstanding - Basic           164,651,478                                              164,651,478
                                                      ===========                                         ================
Diluted Earnings per share, excluding realized gains  $      0.52                                         $           0.56
                                                      ===========                                         ================
Diluted earnings per share                            $      0.68                                         $           0.72
                                                      ===========                                         ================
Weighted average shares outstanding - Diluted         168,680,460                                              168,680,460
                                                      ===========                                         ================
</TABLE> 
<PAGE>
 
(1)  To eliminate the estimated investment income on the cash portion of the
     purchase cost funded by ACE (based on a yield of 5.8% which approximates
     the yield on the ACE portfolio for the fiscal year ended September 30,
     1997).

(2)  Amortization of goodwill for the period.

(3)  Interest on the $385 million short-term bank borrowing which has been 
     calculated at a rate of approximately 6%.
<PAGE>
 
<TABLE> 
<CAPTION> 
                                Unaudited Pro Forma Condensed Consolidated Statements of Operations

                                                                          Year ended September 30, 1997
                                                        ------------------------------------------------------------------
                                                          (in thousands of U.S. dollars, except share and per share data)       
                                                                                                             Pro forma
                                                                                   Pro forma              combined for CAT
                                                             ACE        CAT(1)    Adjustments    Notes      Acquisition
                                                        ------------------------------------------------------------------
<S>                                                     <C>            <C>        <C>            <C>      <C>  
Net Premiums Written                                    $   728,311   $137,050                            $      865,361
                                                        -----------------------------------               --------------

Net Premiums Earned                                         749,129    144,397                                   893,526   
Net investment income                                       285,824     25,027     $(17,632)      (2)            293,219
Losses and loss expenses                                   (718,256)   (29,721)                                 (747,977)
Acquisition costs and administrative expenses              (147,027)   (25,732)      (8,799)      (3)           (181,558)  
Interest expense                                            (15,750)         -      (22,976)      (4)            (38,726)
Income tax                                                   60,862          -                                    60,862 
                                                        -----------------------------------               --------------
Income excluding net realized gains                         214,782    113,971      (49,407)                     279,346
Net realized gains (losses) on investments                  128,430       (356)                                  128,074
                                                        -----------------------------------               --------------
Net Income                                              $   343,212   $113,615     $(49,407)              $      407,420
                                                        ===================================               ==============
 
Basic Earnings per share, excluding realized gains      $      1.26                                       $         1.64
                                                        ===========                                       ==============
Basic earnings per share                                $      2.02                                       $         2.40
                                                        ===========                                       ==============
Weighted average shares outstanding - Basic             169,820,631                                          169,820,631
                                                        ===========                                       ==============
Diluted Earnings per share, excluding realized gains    $      1.25                                       $         1.62
                                                        ===========                                       ==============
Diluted earnings per share                              $      1.99                                       $         2.36
                                                        ===========                                       ==============
Weighted average shares outstanding - Diluted           172,481,013                                          172,481,013
                                                        ===========                                       ==============
</TABLE> 
<PAGE>
 
(1)  The CAT consolidated statement of operations has been compiled to reflect 
its results of operations for the twelve months ended September 30, 1997.

(2)  To eliminate the estimated investment income on the cash portion of the 
purchase cost funded by ACE (based on a yield of 5.8% which approximates the 
yield on the ACE portfolio for the fiscal year ended September 30, 1997).

(3)  Amortization of goodwill for the period

(4)  Interest on the $385 million short-term bank borrowing which has been
calculated at a rate of approximately 6%.

<PAGE>
 
                                                                    EXHIBIT 99.3

               ACE Limited Completes Acquisition of CAT Limited

HAMILTON, Bermuda--(BUSINESS WIRE)--April 1, 1998--ACE Limited (NYSE:ACL)
announced today that it has completed the acquisition of CAT Limited. The total
consideration paid in the transaction was approximately $711 million in cash,
subject to certain post-closing adjustments. As previously disclosed, CAT
Limited will be integrated with ACE's existing property catastrophe subsidiary,
Tempest Reinsurance Company Limited. The combined property catastrophe
reinsurers will operate under the Tempest Re name.

Brian Duperreault, chairman, president and chief executive officer of ACE
Limited stated, "We are very pleased to have been able to close this transaction
quickly and look forward to the new opportunities this acquisition brings to
ACE."

The ACE group of companies provides insurance and reinsurance for a diverse
group of international clients. Operating subsidiaries are based in Bermuda, the
United States, the United Kingdom (Lloyd's), and the Republic of Ireland. At
December 31, 1997, ACE had $2.6 billion in shareholders' equity and
approximately $5.0 billion in assets.

  CONTACT: ACE Limited
        Investor Contact:
        Helen M. Wilson, 441/299-9283
        or
        Media Contact:
        Wendy Davis Johnson, 441/299-9347


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