Lease Option & Rent Credit
A renter who has been paying above-market rent under a real lease-option agreement may have usable purchase credit.
Fannie rent credit
Fannie permits a documented rent credit with an option to purchase to count toward the down payment or minimum borrower contribution. The eligible amount is limited to the difference between appraiser-supported market rent and the actual rent paid.
Documentation
The agreement must have an original term of at least 12 months and identify the rent and monthly credit. The lender also needs evidence of the actual rental payments and an appraisal supporting market rent.
Official agency baseline
Fannie Mae Selling Guide · Freddie Mac Seller/Servicer Guide
These are agency-level rules. AUS findings, mortgage insurance, product restrictions and lender/investor overlays can still affect a real loan.