By Ziya Y. · 23 Years Banking · Updated May 2026
If you've been denied a mortgage despite appearing to meet the published requirements, a lender overlay is the most likely culprit. Lender overlays are additional restrictions that individual banks and mortgage companies add on top of federal agency minimum requirements. They're legal, common, and almost never disclosed to borrowers.
FHA (the government program) requires a minimum 580 credit score. But your lender may require 640. That 60-point gap — the difference between what FHA requires and what the lender requires — is an overlay. You meet FHA standards. You don't meet this lender's overlay. Apply at a lender that follows agency minimums and you may be approved.
Lenders typically sell mortgages on the secondary market (to Fannie Mae, Freddie Mac, or investors). These buyers have their own standards, and lenders add buffers to reduce the risk that a loan gets rejected after closing. The result: borrowers who qualify under federal rules get turned down by lenders protecting their own risk exposure.
FRC's Denial Letter Decoder compares your denial reasons against agency minimums. If your profile meets agency standards but you were denied, FRC identifies the specific overlay that triggered the denial and classifies it with a confidence score. It then shows which loan program types don't apply that overlay.