Fannie Mae bank statements: two months, large deposits and the actual wording

Two months is not the rule for every transaction

When bank or investment portfolio statements are used, B3-4.2-01, dated May 4, 2022, sets different coverage periods for purchases and refinances. The separate Desktop Underwriter (DU) topic, B3-4.4-02, dated June 1, 2022, gives the corresponding depository statement requirements for DU loan casefiles.

A statement can cover the right period and still be too old. B3-4.2-01 says that if the latest bank statement is more than 45 days earlier than the application date, the lender should ask for a more recent bank-generated supplement showing at least the last four account digits, balance and date. The DU topic says monthly statements must be dated within 45 days of the initial application. For quarterly statements, the lender must also confirm that the funds haven't moved to another asset account verified with more current documentation.

Statements aren't the only route. B3-4.2-01 permits a Verification of Deposit (Form 1006), requested from and returned directly by the institution. It also permits third-party asset verification subject to its listed authorization, information, age and reliability conditions. The DU topic permits Form 1006 instead of statements too, and when DU validates assets, its documentation messages can specify different evidence.

DU's requirements are minimums, so a lender may still ask for more. B3-4.4-02 explicitly leaves the lender to determine whether additional documents are warranted. It also says DU won't require asset documentation for a refinance when total funds to be verified are $500 or less. That narrow provision isn't a general exemption from a lender's document requests.

The statement needs more than a closing balance

A transaction list and a full bank statement aren't interchangeable. For depository statements, B3-4.2-01 (May 4, 2022) requires the following information:

• The financial institution and the borrower as account holder.
• At least the last four digits of the account number.
• The statement's covered period.
• All deposits and withdrawals.
• The ending account balance.

For investment portfolio statements, the topic specifies all purchase and sale transactions. It permits computer-generated statements, including online downloads, and says internet or fax documents must clearly identify the institution and information source. Missing information must be obtained from the borrower or institution when necessary.

The CFPB's document-submission page, last modified December 12, 2024, is direct about completeness: include every page, even one marked “intentionally left blank.” When printing online documents, it says to include the full website address at the bottom of each page. A worksheet of selected deposits is a companion to the requested evidence, not a replacement for it.

The definition says single deposit and exceeds 50%

B3-4.2-02 (December 14, 2022) defines it this way: “A large deposit is defined as a single deposit that exceeds 50% of the total monthly qualifying income for the loan.” That means strictly greater than 50%, not greater than or equal to it. The denominator isn't the account balance, the average deposit or the sum of everything paid into the account that month.

The income figure for your worksheet needs to be supplied for the exercise or confirmed with your lender, not derived by adding the statement's credits. Neither this article nor the calculator determines qualifying income, including for a self-employed applicant.

Because the guide compares single deposits, each deposit needs its own row. A monthly total can help you check your transcription, but it isn't the comparison described by the guide. Nor does an amount below this threshold establish that its source is acceptable: the same topic requires lenders to investigate indications of borrowed funds.

The source and the transaction type change the next question

For a purchase, B3-4.2-02 (December 14, 2022) says that the lender must document an acceptable source when a large deposit is needed for the down payment, closing costs or financial reserves. If documentation is incomplete, the lender has to use reasonable judgment, considering the available evidence and the borrower's wider financial profile. The guide requires a written rationale in the loan file for using the funds.

Under the purchase wording, verified funds must also be reduced by an undocumented large deposit or its undocumented portion. The lender must confirm that the remaining funds are sufficient and use the reduced asset amount for underwriting. That's a calculation for the lender under the guide, not an “approved balance” this worksheet can produce.

When a deposit has both sourced and unsourced portions, though, only the unsourced portion is used to determine whether it meets the large-deposit definition. Having a document in your folder doesn't establish that the lender accepts it as source evidence.

For a refinance, the same topic says documentation or explanation of large deposits isn't required. The lender is still responsible for considering borrowed funds and any related liability, though. This is the cited Fannie Mae provision, not a promise about every refinance program or the requests you'll receive.

Some sources are readily identifiable on the statement. The guide gives payroll, Social Security, IRS or state tax refunds, and transfers between verified accounts as examples. If the source is readily identifiable and printed on the statement, the lender need not obtain further explanation or documentation. It should obtain additional documentation if it still has questions about borrowed funds. A description containing “transfer” alone can't establish that both accounts were verified.

B3-4.2-02 also says DU asset validation identifies which large deposits need documentation through its messages. With a Verification of Deposit that has no depository activity, the topic instead requires source verification for accounts opened within the last 90 days of the application and balances considerably above the average shown on the VOD. The two-month statement period isn't a universal “seasoning” safe harbor that makes a source irrelevant.

A fictional $6,000 income figure gives a $3,000 boundary

In this synthetic example, the total monthly qualifying income is assumed to have already been supplied as $6,000.00. Half is $3,000.00. The three deposits below are fictional USD entries in one account, not a complete statement or an applicant's records.

The one-cent difference matters. $3,000.00 does not exceed the boundary; $3,000.01 does. For the third row, assume the lender has accepted documentation for exactly $2,000.00. That leaves $4,500.00 minus $2,000.00, or $2,500.00, unsourced. The remaining portion is below $3,000.00, which illustrates the guide's sourced/unsourced comparison without deciding whether any funds can be used.

The two gross deposits above the boundary total $7,500.01. That's a subtotal of rows selected by arithmetic, not an amount to subtract from an account balance. The documentation on the first two rows is still unknown: a blank means neither zero documented nor fully documented.

The exact comparison can also be written as deposit × 2 > qualifying income. This avoids rounding half of an odd-cent income figure before comparing. For the unsourced comparison, use (deposit − documented portion) × 2 > qualifying income, but only when the documented portion is explicitly known. These are arithmetic expressions, not underwriting instructions.

Make a list that leads back to the statement

The large-deposit review tool can help organize the comparison, using either a supplied absolute threshold or the explicitly named Fannie Mae illustration with supplied qualifying income. Neither option determines what a lender will accept. Keep gross threshold crossings separate from comparisons using a documented portion, since they answer different questions.

An ordinary worksheet works too. You can copy this CSV for the fictional example; its blank documented-portion cells deliberately mean unknown. The page numbers are fictional references, not evidence that these deposits occurred.

Date,Description,Deposit,Documented portion,Statement page
2026-09-03,Fictional deposit A,3000.00,,2
2026-09-10,Fictional deposit B,3000.01,,2
2026-09-18,Fictional deposit C,4500.00,2000.00,3

With real records, you'll need the original date, description, amount and source-page reference to find each entry again. Keep each calculation to one account and currency. Evidence filenames and the lender's outstanding request belong in separate notes so your explanation doesn't replace the bank's description.

A native bank CSV can save transcription for this working list, but you still need to check the selected rows against the full statements before relying on it. The statement coverage checker helps compare entered statement periods, while the statement review log guide explains how to record checks and unfinished work. Neither determines whether the lender's evidence request has been satisfied.

Send the evidence the lender actually requests

Requirements vary, so the CFPB page, last modified December 12, 2024, says to ask the lender which documents are needed for a large deposit. It also says to ask your loan officer exactly how and where to send documents. Send copies while keeping the originals, then confirm the right person received them, as its submission instructions recommend.

A review list can point to the relevant entries, but it can't establish the source of money or authenticate a statement. Even when opening balance plus transactions matches the closing balance, that's only a statement-arithmetic check. It's separate from reconciling the books and from document authenticity, as the balanced-statement guide explains. There's no loan approval result hidden inside the subtotal.

What we checked

We opened the three linked Fannie Mae topics and the CFPB page on October 17, 2026. The Fannie Mae headings displayed May 4, 2022, December 14, 2022 and June 1, 2022; those are topic dates, not new effective dates inferred from the consolidated guide's October 7, 2026 publication label. CFPB displayed December 12, 2024 as its last-modified date. We parsed the fictional CSV and recomputed the example with Python Decimal, including the exact boundary and unknown documented portions. We didn't run a lender submission, DU casefile or spreadsheet application, and didn't assess any borrower or source document. For your own request, recheck the linked guidance and your lender's instructions.