Large deposits on bank statements are single credits big enough relative to the borrower's income that a lender asks where the money came from. On a Fannie Mae conventional loan the line is a single deposit above half the total monthly qualifying income. The borrower proves the source with documents, or the lender removes those funds from the file.
What counts as a large deposit on bank statements?
A large deposit is a single credit that is big compared with the borrower's income, not a fixed dollar amount. A 3,000 deposit is routine for one borrower and a problem for another. Each lender or agency sets its own line, and the definition below is the Fannie Mae one for conventional loans.
Fannie Mae's Selling Guide defines a large deposit as "a single deposit that exceeds 50% of the total monthly qualifying income for the loan" in its Selling Guide section on depository accounts. Other programs, including FHA, bank statement loans and many private lenders, set their own tests, so check the lender's guideline.
A worked threshold check
All numbers here are examples. A borrower on a conventional purchase has total monthly qualifying income of 7,200. The threshold is 50 percent of that.
| Item | Amount |
|---|---|
| Total monthly qualifying income | 7,200 |
| Large deposit threshold (50%) | 3,600 |
| Deposit A: payroll | 3,100 |
| Deposit B: transfer from savings | 4,000 |
| Deposit C: mobile deposit, no description | 5,500 |
Deposit A is below the threshold. Deposit B is above it, but a matching debit on the savings statement sources it. Deposit C is above it and has no visible source, so it needs documents. The test is applied to each deposit on its own, not to a month total.
What the test does not catch
A series of smaller deposits that add up to a large one does not trip a single-deposit test. Underwriters still notice, and some lenders ask about them. If a borrower deposits 3,000 five times in five weeks, expect a question even though no one item passes 3,600.
Sourcing a large deposit with a paper trail
Sourcing a large deposit means showing where the money came from with documents a third party created. The source must be identifiable and acceptable to the lender. A written statement from the borrower is an explanation, but it is not evidence on its own.
What a paper trail looks like
The documents depend on what the deposit was:
- Transfer from another account. The statement of the sending account showing the matching withdrawal on the same or nearby date.
- Sale of an asset. A bill of sale, a title transfer or a closing statement, plus the buyer's payment record.
- Payroll, bonus or tax refund. If the source is readily identifiable on the statement, further documents are usually not needed. Fannie Mae's guide says as much for items like payroll or a tax refund, unless the lender suspects the funds are borrowed.
- Business client payment. The invoice and the matching client name on the statement.
- Insurance or legal settlement. The settlement letter or check copy.
How to present it
Give the underwriter one package per deposit: the statement page with the deposit circled, the supporting document and a two-line letter of explanation that states the date, the amount, the source and the account it came from. Packages that need no follow-up questions are the goal. A borrower who sends a bare bank statement and "it was my savings" will get a second request.
A common trap: the missing other side
When the deposit is a transfer, the sending account's statement must be in the file too. If the sending account is not otherwise being used, that is a new account, and the lender will want its history. Brokers should ask about every account the borrower has before the first submission.
Timing: when to ask the borrower
The best time to find a large deposit is before the application, when the borrower can still gather the paper. Ask for the last two to six months of statements early and scan them for credits above the threshold. A deposit found at that point costs an email. The same deposit found by the underwriter in week three costs a condition, a delay and sometimes a lock extension. Tell borrowers not to move money around while the file is open, because every transfer creates another credit and debit pair that someone has to match.
What a good letter of explanation says
A letter of explanation for a large deposit should be short and specific. It names the date and amount, says what the money was, says where it came from, and lists the documents attached. It does not argue or apologise. "On April 12 I deposited 5,500 from the sale of a used camera lens set to a private buyer; the bill of sale and the buyer's payment confirmation are attached" gives the underwriter everything needed to clear the item.
Large deposits excluded from qualifying income
Even a deposit that has been sourced is not always income. Sourcing answers where the money came from. Income treatment answers whether it will repeat. A sourced one-time deposit can be valid as an asset and still be left out of qualifying income.
Two questions, two answers
| Deposit | Source proved? | Counts as asset for cash to close? | Counts as qualifying income? |
|---|---|---|---|
| Transfer from borrower's savings | Yes | Already counted in savings | No |
| Sale of a car | Yes | Yes | No, one-time |
| Client payment, normal invoice | Yes | Yes | Yes, if in pattern |
| Gift from a parent | Yes, with gift letter | Yes | No |
For a bank statement loan, where the lender builds income from deposits, this separation matters a great deal. A lender that averages deposits will take a one-time item out of the average whatever its source. The guide on one-time deposits and the average monthly deposits figure explains how that works.
The refinance difference
Fannie Mae's guide says that on a refinance, documentation or an explanation for large deposits is not required, although the lender must still consider any borrowed funds. That is a program rule, so confirm it with the lender before telling a borrower they can skip the paperwork.
What happens when a large statement deposit cannot be sourced?
When a large deposit cannot be sourced, the lender removes it from the funds it counts. For a purchase, Fannie Mae's guide says verified funds must be reduced by the amount of the undocumented large deposit, and then the lender checks whether what is left is enough.
The effect on the file
Take an example. A borrower shows 52,000 in checking, which includes an unsourced 12,000 deposit. The lender counts 40,000. If the file needed 45,000 for the down payment, closing costs and reserves, it is now 5,000 short. The loan does not fail because the deposit was bad. It fails because the usable funds fell below the requirement.
The options, in order
- Find the paper. Ask the borrower where the money came from and for any record, such as the sending account, a sale record or a message trail.
- Move to another source. If another account has enough sourced funds, use it instead.
- Reduce the funds needed. Seller credits, a different loan amount or a lower purchase price can close a small gap.
- Wait. Some lenders season funds, meaning they accept money after it has sat in the account for a set number of days. Waiting can make an old deposit acceptable by timing alone.
- Accept the loss. If none of that works, the deposit is out.
If the problem is wider than one deposit, the post on bad bank statements on a mortgage covers which statement issues a letter fixes and which end the file.
Gift funds arriving as large deposits from family
Gift funds are money a relative gives the borrower toward the purchase, with no expectation of repayment. A gift often arrives as a large deposit, so the lender will want to link the deposit to the donor and to a signed statement that it is a gift.
What lenders ask for
- A gift letter. It names the donor, the relationship, the amount and states that no repayment is expected.
- The donor's ability to give. A statement from the donor's account showing the withdrawal, or a copy of the check or wire.
- The deposit itself. The gift deposit on the borrower's statement matched to the donor's withdrawal by date and amount.
Allowed donors and rules differ by loan type and lender. Fannie Mae and FHA requirements side by side lists the agency differences, so use it with the lender's own guideline in hand.
Mistakes with gifts
- Cash handed over and deposited. No withdrawal record on the donor side makes the gift hard to prove.
- A gift that is really a loan. If the family expects to be repaid, it is a debt, and it changes the debt-to-income ratio.
- A gift deposited and then moved. Moving the gift between the borrower's accounts adds another line to explain.
Spotting large deposits before the underwriter does
A broker who finds every large credit before submission avoids a round of conditions. TrueBankFlow flags large and out-of-pattern deposits with the date and statement line and lets you exclude any of them from the qualifying average with a note, while the underwriter still decides what is acceptable. The related question of how lenders treat overdraft activity is in how NSF fees are counted.