Fitch Rates BoAALT $373.9MM Series 2005-7.

NEW YORK -- Banc of America Alternative Loan Trust (BoAALT) 2005-7 mortgage pass-through certificates are rated by Fitch Ratings as follows:

E[acute accent]--$360,210,514 Classes CB-1 through CB-5, CB-R, 2-CB-1, 3-CB-1, CB-IO, and CB-PO, 'AAA' (senior certificates);

E[acute accent]--$5,998,000 class B-1, 'AA';

E[acute accent]--$2,811,000 class B-2, 'A';

E[acute accent]--$2,249,000 class B-3, 'BBB';

E[acute accent]--$1,312,000 class B-4, 'BB';

E[acute accent]--$1,312,000 class B-5, 'B'.

E[acute accent]The 'AAA' ratings on the senior certificates reflect the 3.90% subordination provided by the 1.60% class B-1, 0.75% class B-2, 0.60% class B-3, 0.35% privately offered class B-4, 0.35% privately offered class B-5, and 0.25% privately offered class B-6. Classes B-1, B-2, B-3, and the privately offered classes B-4 and B-5 are rated 'AA', 'A', 'BBB', 'BB', and 'B', respectively, based on their respective subordination. Class B-6 is not rated by Fitch. E[acute accent]The ratings also reflect the quality of the underlying collateral, the primary servicing capabilities of Bank of America Mortgage, Inc. (rated 'RPS1-' by Fitch), and Fitch's confidence in the integrity of the legal and financial structure of the transaction. E[acute accent]The transaction is secured by three pools of mortgage loans. Loan groups 1, 2, and 3 are cross-collateralized and supported by the B-1 through B-6 subordinate certificates. E[acute accent]Approximately 20.29%, 15.84%, and 44.90% of the mortgage loans in groups 1, 2, and 3, respectively, were underwritten using Bank of America's 'Alternative A' guidelines. These guidelines are less stringent than Bank of America's general underwriting guidelines and could include limited documentation or higher maximum loan-to-value ratios. Mortgage loans underwritten to 'Alternative A' guidelines could experience higher rates of default and losses than loans underwritten using Bank of America's general underwriting guidelines. E[acute accent]Loan groups 1, 2, and 3 in the aggregate consist of 2,526 recently originated, conventional, fixed-rate, fully amortizing, first lien, one- to four-family residential mortgage loans with original terms to stated maturity (WAM) ranging from 240 to 360 months. The aggregate outstanding balance of the pool as of July 1, 2005 (the cut-off date) is $374,829,899, with an average balance of $148,389 and a weighted average coupon (WAC) of 6.168%. The weighted average original loan-to-value ratio (OLTV) for the mortgage loans in the pool is approximately 74.05%. The weighted average FICO credit score is 739. Second homes and investor-occupied properties comprise 2.74% and 46.62% of the loans in the group, respectively. Rate/Term and cash-out refinances account for 8.52% and 22.98% of the loans in the group, respectively. The states that represent the largest geographic concentration of mortgaged properties are California (15.67%), Florida (15.50%), and Texas (7.52%). All other states represent less than 5% of the aggregate pool balance as of the cut-off date. E[acute accent]None of the mortgage loans are 'high cost' loans as defined under any local, state or federal laws. For additional information on Fitch's rating criteria regarding predatory lending legislation, please see the press release issued May 1, 2003 entitled 'Fitch Revises Rating Criteria in Wake of Predatory Lending Legislation,' available on the Fitch Ratings web site at www.fitchratings.com. E[acute accent]Banc of America Mortgage Securities, Inc. deposited the loans in the trust, which issued the certificates, representing undivided beneficial ownership in the trust. For federal income tax purposes, elections will be made to treat the trust as three separate real estate mortgage investment conduits (REMICs). Wells Fargo Bank, National Association will act as trustee.

E[acute accent]Fitch's rating definitions are available on the agency's public web site, www.fitchratings.com. Published ratings, criteria and methodologies and relevant policies and procedures are also available from this site, at all times. This document will remain on the public site for seven days.