Reserves are the money you'll still have in your accounts after you pay your down payment and closing costs, measured in months of your new house payment. You don't hand reserves to the lender. The underwriter only needs to see that the money exists, that it's yours, and that it's a kind of asset the program counts. Whether you need any, and how many months, depends on the loan program, the occupancy, the number of units, how many other financed properties you own, and the automated underwriting findings. A one-unit home you'll live in often needs none under the agency rules, while two- to four-unit homes, second homes and investment properties usually do.
Reserves are counted in months of the full housing payment on the new loan: principal, interest, property taxes, homeowners insurance, mortgage insurance if any, and association dues. That full payment is often called PITIA. Fannie Mae defines reserves as liquid or near-liquid assets available after closing, measured by how many months of that payment you could cover, with funds to close subtracted first (Selling Guide B3-4.1-01).
The underwriter adds up the eligible assets you'll have left, applies any reductions the program requires for certain accounts, and divides by the monthly payment. If you own other financed properties, some programs require additional reserves based on those properties too.
There are three layers, and it helps to know which one is asking:
For loans run through DU, Fannie Mae's minimums are (B3-4.1-01):
For manually underwritten conventional loans, the minimums are in Fannie's Eligibility Matrix. Freddie Mac has its own rules in its Guide.
HUD defines reserves as your verified liquid assets minus the funds you need to close, and they can't include cash from a cash-out refinance, equity in another property, or borrowed funds (HUD 4000.1 II.A.4.d and II.A.5.c).
These reserve rules aren't new. They read the same in Update 17 of HUD's handbook, the version in effect today, and in Update 18, which lenders must use by Nov 10, 2026.
VA's underwriting focuses on residual income, the money left each month after debts and estimated living costs, which is a different test from reserves. VA and USDA files can still carry reserve conditions from the automated findings or the lender, and reserves can strengthen a file. I'll tell you what your findings actually require.
Bank statement, DSCR and other non-QM programs set their own reserve requirements, and reserves are often a bigger part of the decision than on agency loans. Some of them count assets differently too. Requirements vary by investor and loan structure.
Reserves need to be documented, and the underwriter has to see that the money is yours and reachable. Common eligible assets:
Each account is documented with recent statements, all pages. Large recent deposits into an account used for reserves need to be sourced, just like down payment money. See large deposits.
Proceeds from selling your current house can count once that sale has closed and the money is deposited.
Reserves are a stock of savings. Residual income is a monthly leftover. A file can need one, both or neither. Reserves can also help: in automated underwriting, more reserves can strengthen a file with a higher debt ratio or a lower score, and in manual underwriting they can be a compensating factor. Keeping more in savings instead of putting all of it toward the down payment sometimes produces a stronger file, even though the loan amount is slightly larger. That trade is worth running both ways.
Statements have to show your name, the account number, the institution, the statement period and the ending balance. Screenshots and transaction printouts are often rejected. Full PDF statements from the bank are the usual standard, and some lenders verify directly through the bank or an asset verification service you authorize.
Joint accounts with someone who isn't on the loan raise questions, and some programs want a letter from the other owner confirming your access. If the file takes a while, the underwriter may ask for newer statements and measure reserves again. Moving money out after approval for a car, furniture or moving costs can drop the file below its requirement. Spend after closing, or ask first.
In Tarrant County, property taxes are a large part of the payment, so the same savings cover fewer months of reserves than on a home with lower taxes. Your reserves are measured against the full payment, including the escrowed taxes and insurance, not just principal and interest.
This example is made up to show how reserves are counted.
Kendra is buying a fourplex in Fort Worth to live in one unit, with a conventional loan through DU. She has $62,000 in savings and a 401(k) with a vested balance of $40,000. The cash she needs to close totals $48,000, leaving $14,000 in savings. DU requires six months of reserves for a two- to four-unit principal residence, and her remaining savings cover only about four months of her full estimated payment. Her vested 401(k) balance is an acceptable reserve source under Fannie's rules, so with it counted the file meets the requirement without her withdrawing anything. If she'd used FHA instead, TOTAL would require three months after closing on a fourplex, and FHA would count up to 60 percent of the 401(k) unless she showed more could be withdrawn.
Not sure whether you'll have enough left after closing? Let's lay out what you have, what goes to closing and what's left, against the program your file will likely use. Schedule a call, or when you're ready, start an application.
Links checked Oct 21, 2026.
About the author: McKade Lively, NMLS 2704474, American Pacific Mortgage Corporation dba True North Home Loans, NMLS 1850.
Equal Housing Opportunity.
Last reviewed: Oct 2026