content: <PAGE>   1
        AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON JUNE 27, 2000
                                                             REGISTRATION NO. 333-
  ================================================================================
  
                         SECURITIES AND EXCHANGE COMMISSION
                               WASHINGTON, D.C. 20549
  
                           ------------------------------
  
                                      FORM S-8
  
                            REGISTRATION STATEMENT UNDER
                             THE SECURITIES ACT OF 1933
  
                           ------------------------------
  
                        ONESOURCE INFORMATION SERVICES, INC.
               (Exact Name of Registrant as Specified in Its Charter)
  
               DELAWARE                                  04-3204522
  (State or Other Jurisdiction of            (I.R.S. Employer Identification No.)
   Incorporation or Organization)
  
                                  300 BAKER AVENUE
                                  CONCORD, MA 01742
                 (Address of Principal Executive Offices) (Zip Code)
  
                                --------------------
  
                        1999 STOCK OPTION AND INCENTIVE PLAN
                              (Full Title of the Plan)
  
                                --------------------
  
                                 DANIEL J. SCHIMMEL
                        PRESIDENT AND CHIEF EXECUTIVE OFFICER
                        ONESOURCE INFORMATION SERVICES, INC.
                                  300 BAKER AVENUE
                            CONCORD, MASSACHUSETTS 01742
                       (Name and Address of Agent For Service)
  
                                   (978) 318-4300
            (Telephone Number, Including Area Code, of Agent For Service)
  
                           ------------------------------
  
                                      COPY TO:
  
                                KATHY A. FIELDS, ESQ.
                           TESTA, HURWITZ & THIBEAULT, LLP
                                   125 HIGH STREET
                             BOSTON, MASSACHUSETTS 02110
                                   (617) 248-7000
  
  --------------------------------------------------------------------------------
  
                           CALCULATION OF REGISTRATION FEE
  
  
  <TABLE>
  <CAPTION>
                                                             PROPOSED
                                                              MAXIMUM         PROPOSED MAXIMUM
          TITLE OF SECURITIES             AMOUNT TO BE     OFFERING PRICE    AGGREGATE OFFERING         AMOUNT OF
            TO BE REGISTERED               REGISTERED        PER SHARE              PRICE            REGISTRATION FEE
          -------------------             ------------     --------------    ------------------      ----------------
  <S>                                      <C>                <C>               <C>                     <C>
  Common Stock, $0.01 par value            1,000,000          $7.3125(1)        $7,312,500(1)           $1,930.50(2)
  </TABLE>
  
        (1) The exercise price of options issued pursuant to the 1999 Stock Option
  and Incentive Plan is determined at the time of grant. None of the shares being
  registered hereunder are subject to outstanding options. Accordingly, the
  proposed maximum offering price of $7.3125 per share, which is the average of
  the high and low prices of the Common Stock as reported on the Nasdaq National
  Market System on June 20, 2000, is set forth solely for purposes of calculating
  the filing fee pursuant to Rules 457(c) and (h).
  
        (2) Calculated pursuant to Section 6(b) of the Securities Act of 1933, as
  amended.
  
  
  <PAGE>   2
  
  
  
  
                                       PART I
  
                INFORMATION REQUIRED IN THE SECTION 10(A) PROSPECTUS
  
           This Registration Statement registers additional securities of the same
  class as other securities for which Registration Statement No. 333-85363 on Form
  S-8 as filed with the Securities and Exchange Commission on August 17, 1999,
  relating to the 1999 Stock Option and Incentive Plan is effective. Pursuant to
  General Instruction E, the contents of the above-listed Registration Statement
  are hereby incorporated by reference.
  
                                       PART II
  
                 INFORMATION REQUIRED IN THE REGISTRATION STATEMENT
  
           Pursuant to General Instruction E, the information contained in Items 4
  through 7 and Item 9 of Part II of the Registration Statement No. 333-85363 on
  Form S-8, as it pertains to the 1999 Stock Option and Incentive Plan is
  incorporated by reference herein.
  
  ITEM 3.  INCORPORATION OF DOCUMENTS BY REFERENCE.
  
           The following documents filed by OneSource Information Services, Inc.
  (the "Registrant") with the Commission pursuant to the Securities Exchange Act
  of 1934 (the "Exchange Act"), are incorporated in this Registration Statement by
  reference as of their respective dates:
  
           (a) The Registrant's Annual Report on Form 10-K for the fiscal year
  ended December 31, 1999 filed pursuant to the Exchange Act which contains
  audited financial statements for the fiscal year ended December 31, 1999.
  
           (b) the Registrant's Quarterly Report on Form 10-Q for the fiscal
  quarter ended March 31, 2000 filed pursuant to the Exchange Act;
  
           (c) The section entitled "Description of Registrant's Securities to be
  Registered" contained in the Registrant's Registration Statement on Form 8-A, as
  amended, filed pursuant to Section 12(g) of the Exchange Act on April 22, 1999.
  
           All documents subsequently filed with the Commission by the Registrant
  pursuant to Sections 13(a), 13(c), 14 and 15(d) of the Exchange Act, prior to
  the filing of a post-effective amendment which indicates that all securities
  offered herein have been sold or which deregisters all securities then remaining
  unsold, shall be deemed to be incorporated by reference in this Registration
  Statement and to be a part hereof from the date of filing of such documents.
  
  
  <PAGE>   3
  
  
  
  ITEM 8.  EXHIBITS.
  
  EXHIBIT NO.       DESCRIPTION OF EXHIBIT
  
  4.1               1999 Stock Option and Incentive Plan of the Registrant, as
                    amended
  
  5.1               Opinion of Testa, Hurwitz & Thibeault, LLP
  
  23.1              Consent of PricewaterhouseCoopers LLP
  
  23.2              Consent of Testa, Hurwitz & Thibeault, LLP (included in
                    Exhibit 5.1)
  
  24.1              Power of Attorney (included as part of the signature page to
                    this Registration Statement)
  
  
  
  <PAGE>   4
  
  
  
  
                                     SIGNATURES
  
        Pursuant to the requirements of the Securities Act of 1933, the Registrant
  certifies that it has reasonable grounds to believe that it meets all of the
  requirements for filing on Form S-8 and has duly caused this Registration
  Statement to be signed on its behalf by the undersigned, thereunto duly
  authorized, in the City of Concord, State of Massachusetts, on the 27 day of
  June, 2000.
  
                                 ONESOURCE INFORMATION SERVICES, INC.
  
  
                                 By: /s/ Daniel J. Schimmel
                                    ----------------------------------
                                 Daniel J. Schimmel
                                 President and Chief Executive Officer
  
  
                          POWER OF ATTORNEY AND SIGNATURES
  
        We, the undersigned officers and directors of OneSource Information
  Services, Inc., hereby severally constitute and appoint Daniel J. Schimmel and
  Roy D. Landon, and each of them singly, our true and lawful attorneys, with full
  power to them and each of them singly, to sign for us in our names in the
  capacities indicated below, any registration statement on Form S-8, any and all
  amendments and exhibits to this registration statement, and any and all
  applications and other documents to be filed with the Securities and Exchange
  Commission pertaining to the registration of the securities covered hereby or
  thereby, and generally to do all things in our names and on our behalf in such
  capacities to enable OneSource Information Services, Inc. to comply with the
  provisions of the Securities Act of 1933 and all requirements of the Securities
  and Exchange Commission.
  
        Pursuant to the requirements of the Securities Act of 1933, this
  registration statement has been signed by the following persons in the
  capacities and on the dates indicated.
  
  <TABLE>
  <CAPTION>
        SIGNATURE                               TITLE(S)                                      DATE
        ---------                               --------                                      ----
  
  <S>                                           <C>                                           <C>
        /s/ Daniel J. Schimmel                  Chief Executive Officer, President            June 27, 2000
  -----------------------------                 and Director
  Daniel J. Schimmel                            (Principal Executive Officer)
  
  
        /s/ Roy D. Landon                       Senior Vice President                         June 27, 2000
  ------------------------------------          and Chief Financial Officer
  Roy D. Landon                                 (Principal Financing and Accounting
                                                Officer)
  
  
        /s/ David Dominik                       Director                                      June 27, 2000
  ------------------------------------
  David Dominik
  
        /s/ Martin Kahn                         Chairman                                      June 27, 2000
  ------------------------------------
  Martin Kahn
  
        /s/ Gregg S. Newmark                    Director                                      June 27, 2000
  ------------------------------------
  Gregg S. Newmark
  </TABLE>
  
  
  <PAGE>   5
  
  
  
  
                                    EXHIBIT INDEX
  
  
  
  EXHIBIT NO.       DESCRIPTION
  
  4.1               1999 Stock Option and Incentive Plan, as amended.
  
  5.1               Opinion of Testa, Hurwitz & Thibeault, LLP
  
  23.1              Consent of PricewaterhouseCoopers LLP
  
  23.2              Consent of Testa, Hurwitz & Thibeault, LLP (included in
                    Exhibit 5.1)
  
  24.1              Power of Attorney (included as part of the signature page of
                    this Registration Statement)
metadata_documents: [{"type": "S-8", "sequence": "1", "filename": "s-8.txt", "description": "ONESOURCE INFORMATION SERVICES, INC.", "secsgml_size_bytes": 10305}]
metadata_filer: {"company-data": {"conformed-name": "ONESOURCE INFORMATION SERVICES INC", "cik": "0001079880", "assigned-sic": "7374", "irs-number": "043204522", "state-of-incorporation": "DE", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "S-8", "act": "33", "file-number": "333-40188", "film-number": "661515"}, "business-address": {"street1": "300 BAKER AVENUE", "city": "CONCORD", "state": "MA", "zip": "01742", "phone": "9783184300"}, "mail-address": {"street1": "300 BAKER AVE", "city": "CONCORD", "state": "MA", "zip": "01742"}}
text: 1
        AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON JUNE 27, 2000
                                                             REGISTRATION NO. 333-
  ================================================================================
  
                         SECURITIES AND EXCHANGE COMMISSION
                               WASHINGTON, D.C. 20549
  
                           ------------------------------
  
                                      FORM S-8
  
                            REGISTRATION STATEMENT UNDER
                             THE SECURITIES ACT OF 1933
  
                           ------------------------------
  
                        ONESOURCE INFORMATION SERVICES, INC.
               (Exact Name of Registrant as Specified in Its Charter)
  
               DELAWARE                                  04-3204522
  (State or Other Jurisdiction of            (I.R.S. Employer Identification No.)
   Incorporation or Organization)
  
                                  300 BAKER AVENUE
                                  CONCORD, MA 01742
                 (Address of Principal Executive Offices) (Zip Code)
  
                                --------------------
  
                        1999 STOCK OPTION AND INCENTIVE PLAN
                              (Full Title of the Plan)
  
                                --------------------
  
                                 DANIEL J. SCHIMMEL
                        PRESIDENT AND CHIEF EXECUTIVE OFFICER
                        ONESOURCE INFORMATION SERVICES, INC.
                                  300 BAKER AVENUE
                            CONCORD, MASSACHUSETTS 01742
                       (Name and Address of Agent For Service)
  
                                   (978) 318-4300
            (Telephone Number, Including Area Code, of Agent For Service)
  
                           ------------------------------
  
                                      COPY TO:
  
                                KATHY A. FIELDS, ESQ.
                           TESTA, HURWITZ & THIBEAULT, LLP
                                   125 HIGH STREET
                             BOSTON, MASSACHUSETTS 02110
                                   (617) 248-7000
  
  --------------------------------------------------------------------------------
  
                           CALCULATION OF REGISTRATION FEE
  PROPOSED
                                                              MAXIMUM         PROPOSED MAXIMUM
          TITLE OF SECURITIES             AMOUNT TO BE     OFFERING PRICE    AGGREGATE OFFERING         AMOUNT OF
            TO BE REGISTERED               REGISTERED        PER SHARE              PRICE            REGISTRATION FEE
          -------------------             ------------     --------------    ------------------      ----------------
  Common Stock, $0.01 par value            1,000,000          $7.3125(1)        $7,312,500(1)           $1,930.50(2)
  (1) The exercise price of options issued pursuant to the 1999 Stock Option
  and Incentive Plan is determined at the time of grant. None of the shares being
  registered hereunder are subject to outstanding options. Accordingly, the
  proposed maximum offering price of $7.3125 per share, which is the average of
  the high and low prices of the Common Stock as reported on the Nasdaq National
  Market System on June 20, 2000, is set forth solely for purposes of calculating
  the filing fee pursuant to Rules 457(c) and (h).
  
        (2) Calculated pursuant to Section 6(b) of the Securities Act of 1933, as
  amended.
  2
  
                                       PART I
  
                INFORMATION REQUIRED IN THE SECTION 10(A) PROSPECTUS
  
           This Registration Statement registers additional securities of the same
  class as other securities for which Registration Statement No. 333-85363 on Form
  S-8 as filed with the Securities and Exchange Commission on August 17, 1999,
  relating to the 1999 Stock Option and Incentive Plan is effective. Pursuant to
  General Instruction E, the contents of the above-listed Registration Statement
  are hereby incorporated by reference.
  
                                       PART II
  
                 INFORMATION REQUIRED IN THE REGISTRATION STATEMENT
  
           Pursuant to General Instruction E, the information contained in Items 4
  through 7 and Item 9 of Part II of the Registration Statement No. 333-85363 on
  Form S-8, as it pertains to the 1999 Stock Option and Incentive Plan is
  incorporated by reference herein.
  
  ITEM 3.  INCORPORATION OF DOCUMENTS BY REFERENCE.
  
           The following documents filed by OneSource Information Services, Inc.
  (the "Registrant") with the Commission pursuant to the Securities Exchange Act
  of 1934 (the "Exchange Act"), are incorporated in this Registration Statement by
  reference as of their respective dates:
  
           (a) The Registrant's Annual Report on Form 10-K for the fiscal year
  ended December 31, 1999 filed pursuant to the Exchange Act which contains
  audited financial statements for the fiscal year ended December 31, 1999.
  
           (b) the Registrant's Quarterly Report on Form 10-Q for the fiscal
  quarter ended March 31, 2000 filed pursuant to the Exchange Act;
  
           (c) The section entitled "Description of Registrant's Securities to be
  Registered" contained in the Registrant's Registration Statement on Form 8-A, as
  amended, filed pursuant to Section 12(g) of the Exchange Act on April 22, 1999.
  
           All documents subsequently filed with the Commission by the Registrant
  pursuant to Sections 13(a), 13(c), 14 and 15(d) of the Exchange Act, prior to
  the filing of a post-effective amendment which indicates that all securities
  offered herein have been sold or which deregisters all securities then remaining
  unsold, shall be deemed to be incorporated by reference in this Registration
  Statement and to be a part hereof from the date of filing of such documents.
  3
  
  ITEM 8.  EXHIBITS.
  
  EXHIBIT NO.       DESCRIPTION OF EXHIBIT
  
  4.1               1999 Stock Option and Incentive Plan of the Registrant, as
                    amended
  
  5.1               Opinion of Testa, Hurwitz & Thibeault, LLP
  
  23.1              Consent of PricewaterhouseCoopers LLP
  
  23.2              Consent of Testa, Hurwitz & Thibeault, LLP (included in
                    Exhibit 5.1)
  
  24.1              Power of Attorney (included as part of the signature page to
                    this Registration Statement)
  4
  
                                     SIGNATURES
  
        Pursuant to the requirements of the Securities Act of 1933, the Registrant
  certifies that it has reasonable grounds to believe that it meets all of the
  requirements for filing on Form S-8 and has duly caused this Registration
  Statement to be signed on its behalf by the undersigned, thereunto duly
  authorized, in the City of Concord, State of Massachusetts, on the 27 day of
  June, 2000.
  
                                 ONESOURCE INFORMATION SERVICES, INC.
  
                                 By: /s/ Daniel J. Schimmel
                                    ----------------------------------
                                 Daniel J. Schimmel
                                 President and Chief Executive Officer
  
                          POWER OF ATTORNEY AND SIGNATURES
  
        We, the undersigned officers and directors of OneSource Information
  Services, Inc., hereby severally constitute and appoint Daniel J. Schimmel and
  Roy D. Landon, and each of them singly, our true and lawful attorneys, with full
  power to them and each of them singly, to sign for us in our names in the
  capacities indicated below, any registration statement on Form S-8, any and all
  amendments and exhibits to this registration statement, and any and all
  applications and other documents to be filed with the Securities and Exchange
  Commission pertaining to the registration of the securities covered hereby or
  thereby, and generally to do all things in our names and on our behalf in such
  capacities to enable OneSource Information Services, Inc. to comply with the
  provisions of the Securities Act of 1933 and all requirements of the Securities
  and Exchange Commission.
  
        Pursuant to the requirements of the Securities Act of 1933, this
  registration statement has been signed by the following persons in the
  capacities and on the dates indicated.
  SIGNATURE                               TITLE(S)                                      DATE
        ---------                               --------                                      ----
  /s/ Daniel J. Schimmel                  Chief Executive Officer, President            June 27, 2000
  -----------------------------                 and Director
  Daniel J. Schimmel                            (Principal Executive Officer)
  
        /s/ Roy D. Landon                       Senior Vice President                         June 27, 2000
  ------------------------------------          and Chief Financial Officer
  Roy D. Landon                                 (Principal Financing and Accounting
                                                Officer)
  
        /s/ David Dominik                       Director                                      June 27, 2000
  ------------------------------------
  David Dominik
  
        /s/ Martin Kahn                         Chairman                                      June 27, 2000
  ------------------------------------
  Martin Kahn
  
        /s/ Gregg S. Newmark                    Director                                      June 27, 2000
  ------------------------------------
  Gregg S. Newmark
  5
  
                                    EXHIBIT INDEX
  
  EXHIBIT NO.       DESCRIPTION
  
  4.1               1999 Stock Option and Incentive Plan, as amended.
  
  5.1               Opinion of Testa, Hurwitz & Thibeault, LLP
  
  23.1              Consent of PricewaterhouseCoopers LLP
  
  23.2              Consent of Testa, Hurwitz & Thibeault, LLP (included in
                    Exhibit 5.1)
  
  24.1              Power of Attorney (included as part of the signature page of
                    this Registration Statement)