<ARTICLE> 5 <LEGEND> THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE COMPANY'S REGISTRATION STATEMENT ON FORM S-1 AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH REGISTRATION STATEMENT ON FORM S-1 </LEGEND> <CIK> 0001079880 <NAME> ONESOURCE INFORMATION SERVICES, INC. <MULTIPLIER> 1 <CURRENCY> U.S. DOLLARS <PERIOD-TYPE> 3-MOS <FISCAL-YEAR-END> MAR-31-1999 <PERIOD-START> JAN-01-1999 <PERIOD-END> MAR-31-1999 <EXCHANGE-RATE> 1 <CASH> 6,739 <SECURITIES> 0 <RECEIVABLES> 5,110 <ALLOWANCES> 288 <INVENTORY> 0 <CURRENT-ASSETS> 17,928 <PP&E> 6,036 <DEPRECIATION> 4,248 <TOTAL-ASSETS> 20,723 <CURRENT-LIABILITIES> 20,929 <BONDS> 0 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 3,591 <OTHER-SE> (10,246) <TOTAL-LIABILITY-AND-EQUITY> 20,723 <SALES> 8,143 <TOTAL-REVENUES> 8,143 <CGS> 3,457 <TOTAL-COSTS> 3,457 <OTHER-EXPENSES> 5,505 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 93 <INCOME-PRETAX> (412) <INCOME-TAX> 0 <INCOME-CONTINUING> (412) <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> (412) <EPS-PRIMARY> (0.08) <EPS-DILUTED> (0.08)