Reserves
Definition
Reserves are liquid or near-liquid assets that remain available to the borrower after the mortgage closes. They are an underwriting asset idea, not the same as asset verification.
In plain English
Lenders often want to see that money will still be on hand after closing, not only enough cash to get to the closing table. Those leftover funds are reserves. How many months of payment a lender wants is not a universal consumer figure. This page defines the leftover-asset idea. It does not publish reserve tables.
Technical definition
Fannie Mae’s Selling Guide defines liquid financial reserves as liquid or near-liquid assets available after the mortgage closes. That official definition is PRIMARY. Month-count tables and engine-specific calculations are omitted.
Why it matters
Asset verification is the process of proving assets. Reserves are the leftover funds that process may be used to show.
Related terms
Sources reviewed
B3-4.1-01 Minimum Reserve Requirements
ObservedSeptember 6, 2026
Important note
This page does not publish universal month-count reserve requirements.