12-Month vs. 24-Month Bank Statement Loan 2026: Which Program Produces Better Income

Bank statement loans qualify self-employed borrowers on average monthly deposits rather than tax return income. The averaging window, 12 months or 24 months, can produce very different qualifying income numbers depending on when revenue was strong and when it was soft. Matching the borrower's deposit history to the right window is part of the placement decision.

12-Month Program

• ✦Uses only the most recent 12 months of personal or business bank statements
• ✦Better for borrowers whose income has grown significantly in the last year
• ✦Not available from all non-QM lenders; some require 24 months as a minimum
• ✦Rate is typically 25-50 bps higher than the 24-month version at the same LTV
• ✦Borrower must have been self-employed for at least 2 years even for a 12-month program

24-Month Program

• ✦Averages deposits over the most recent 24 months
• ✦Better for borrowers with steady or growing deposit history over 2 years
• ✦Wider lender availability; more competitive pricing
• ✦If the prior year had higher deposits than the current year, 24-month average is lower than 12-month

Business vs. Personal Statements

Lenders typically require a 50% expense factor on business bank statement deposits unless the borrower provides a CPA letter documenting a lower expense ratio. Personal bank statements avoid this, but only work when the borrower pays themselves from the business into a personal account. Mixing personal and business deposits in the same account causes documentation problems and often triggers a request for business bank statements regardless.

Choosing the Window

Pull 24 months of statements and calculate the average for both 12 and 24 months. Use the window that produces higher qualifying income after expense ratios. Then check which window your target lender actually offers. If only 24-month is available and 12-month produces higher income, consider whether a different lender serves the borrower better even at a slightly different rate.