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: July 29, 2004
(Date of earliest event reported)

Commission File No. 333-105940

                    Banc of America Mortgage Securities, Inc.
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        Delaware                                         36-4514369
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(State of Incorporation)                    (I.R.S. Employer Identification No.)

201 North Tryon Street, Charlotte, North Carolina                       28255
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Address of principal executive offices                                (Zip Code)

                                 (704) 387-8239
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               Registrant's Telephone Number, including area code


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         (Former name, former address and former fiscal year, if changed
                               since last report)



            ITEM 5. Other Events

            On July 29, 2004, Banc of America Mortgage Securities, Inc., a
Delaware corporation (the "Registrant"), sold Banc of America Alternative Loan
Trust 2004-7 Mortgage Pass-Through Certificates, Series 2004-7, Class 1-A-1,
Class 1-A-R, Class 1-A-LR, Class 2-A-1, Class 2-A-2, Class CB-IO, Class 3-A-1,
Class 3-A-2, Class 3-A-3, Class 3-A-4, Class 3-IO, Class 4-A-1, Class 5-A-1,
Class 15-IO, Class 15-PO, Class X-PO, Class 30-B-1, Class 30-B-2, Class 30-B-3,
Class 15-B-1, Class 15-B-2 and Class 15-B-3 (the "Offered Certificates"), having
an aggregate original principal balance of $409,499,303. The Offered
Certificates were issued pursuant to a Pooling and Servicing Agreement, dated
July 29, 2004, among the Registrant, Bank of America, N.A., as servicer
("BANA"), and Wells Fargo Bank, N.A., as trustee (the "Agreement"), a copy of
which is filed as an exhibit hereto. Mortgage Pass-Through Certificates, Series
2004-7, Class 30-B-4, Class 30-B-5 Class 30-B-6, Class 15-B-4, Class 15-B-5 and
Class 15-B-6 Certificates, having an aggregate initial principal balance of
$4,640,405 (the "Private Certificates" and, together with the Offered
Certificates, the "Certificates"), were also issued pursuant to the Agreement.

            As of the date of initial issuance, the Offered Certificates
evidenced an approximate 98.80% undivided interest in a trust (the "Trust"),
consisting principally of five pools of fixed interest rate, conventional,
monthly pay, fully-amortizing, one- to four-family residential first mortgage
loans. The remaining undivided interests in the Trust are evidenced by the
Private Certificates distributions on which are subordinated to distributions on
the Offered Certificates.

            Interest on the Offered Certificates will be distributed on each
Distribution Date (as defined in the Agreement). Monthly distributions in
reduction of the principal balance of the Offered Certificates will be allocated
to the Offered Certificates in accordance with the priorities set forth in the
Agreement. Distributions of interest and in reduction of principal balance on
any Distribution Date will be made to the extent that the related Pool
Distribution Amount is sufficient therefor.

            Elections will be made to treat the Trust as two separate REMICs for
federal income tax purposes (the "Upper-Tier REMIC" and the "Lower-Tier REMIC"
and each a "REMIC"). The Class 1-A-1, Class 2-A-1, Class 2-A-2, Class 3-A-1,
Class 3-A-2, Class 3-A-3, Class 3-A-4, Class 3-IO, Class 4-A-1, Class 5-A-1,
Class 30-B-1, Class 30-B-2, Class 30-B-3, Class 30-B-4, Class 30-B-5, Class
30-B-6, Class 15-B-1, Class 15-B-2, Class 15-B-3, Class 15-B-4, Class 15-B-5 and
Class 15-B-6 Certificates and each IO and PO Component will be treated as
"regular interests" in the Upper-Tier REMIC and the Class 1-A-R and Class 1-A-LR
Certificates will be treated as the "residual interest" in the Upper-Tier REMIC
and the Lower-Tier REMIC, respectively.



ITEM 7. Financial Statements and Exhibits

            (c) Exhibits

Item 601(a)
of Regulation S-K
Exhibit No.                             Description
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      (EX-4)                            Pooling and Servicing Agreement, dated
                                        July 29, 2004, among Banc of America
                                        Mortgage Securities, Inc., Bank of
                                        America, N.A. and Wells Fargo Bank,
                                        N.A., as trustee.



            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 hereunto duly authorized.

                                       BANC OF AMERICA MORTGAGE SECURITIES, INC.

July 29, 2004

                                        By:   /s/ Judy Lowman
                                            ------------------------------------
                                            Name: Judy Lowman
                                            Title: Vice President



                                INDEX TO EXHIBITS

                                                                  Paper (P) or
Exhibit No.             Description                               Electronic (E)
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   (EX-4)               Pooling and Servicing Agreement,          E
                        dated July 29, 2004 among Banc of
                        America Mortgage Securities, Inc.,
                        Bank of America, N.A. and Wells
                        Fargo Bank, N.A., as trustee.