How to Document a Bank Statement Loan Decline for an Off Year Not yet Filed

The Quick Read: A weak year with no filed return can still be documented, because a bank statement file is reviewed on documented income under the applicable program, subject to lender guidelines, rather than on a tax return the IRS has not yet processed. The file needs deposits that tell a clear story, a specific written explanation of the dip, and records that show the business has stabilized. What follows is how to build that package, in order.

• Deposits, not returns, carry the file, so the deposit pattern and your explanation of it matter most.
• A letter of explanation works only when it names a cause, gives dates, and says whether the cause is over.
• A year-to-date profit and loss statement should reconcile to the deposits, and a CPA letter can back it up.
• A stronger earlier year generally can’t be averaged in to prop up a weak recent one.
• If the explanation is thin, the realistic options are lower qualifying income, a different statement window, or a different program.

Key Terms Defined

Lookback window: The stretch of months, typically 12, whose deposits the lender averages into monthly income.

Expense factor: The share of business deposits a lender subtracts as operating cost before counting the rest as income; it varies by lender and program.

Deposit scrub: The underwriter’s review that removes transfers, loans, refunds, and other non-income deposits.

Letter of explanation: A short signed statement from the borrower describing why income changed and what has happened since.

Profit and loss statement (P&L): A summary of revenue and expenses for a period, used to support the deposits.

CPA letter: A letter from a licensed accountant confirming facts such as the business’s existence, the expense ratio, or the preparer’s relationship with the borrower.

What Does “Not Yet Filed” Actually Mean for the File?

It means the lender has nothing to verify that year, and bank statement programs exist for exactly that gap. Under IRS Tax Topic 304, an individual can request up to six more months to file, but the extension to file is not an extension to pay. An extension gives you time. It does not create a return.

Lenders that work from traditional personal-income documentation pull transcripts through the IRS. The Income Verification Express Service lets a lender request a return transcript with a signed Form 4506-C. For a year that is still on extension or never filed, the transcript will not show a processed return. A tax-return file cannot move forward on that year.

A bank statement file does not depend on it. Across Lendmire’s wholesale network, the typical program uses 12 months of business or personal statements. Qualifying income comes from deposit averages after a lender-specific expense factor. The factor differs by program, so no single formula applies to every file.

That does not make the unfiled year invisible. A late or missing return is still a late or missing return. If the extended due date has passed, the filing problem is real, and many underwriters will ask about it. Honesty here is the safer path, because the IRS record will show what it shows regardless of what the loan file says.

How Underwriting Treats a Decline, Step by Step

An underwriter reads a decline in four passes, and each one is a chance to help or hurt the file.

1. Trend check. The underwriter compares recent months against the full window. Falling deposits at the end of the window draw more attention than a dip in the middle that has since recovered.

2. Deposit scrub. Transfers between your own accounts, loan proceeds, and unexplained large deposits come out. What is left is the income base.

3. Expense factor. On business accounts, the lender applies its factor to the scrubbed deposits and divides by the months in the window. An accountant-prepared expense ratio can replace a fixed factor on some owner-occupied programs, subject to lender guidelines.

4. Explanation review. If the trend is down, the underwriter asks why. Possible outcomes: accept the explanation, use a more conservative average, shorten the lookback, request more documents, or find the file ineligible under that program.

There is no universal cutoff for how big a decline is too big. Lender guidelines decide, and treatment varies noticeably from one lender to the next. That is the main reason a broker who sees many programs can matter. Some lenders will average the full window. Others weigh recent months more heavily. The strictest overlays want a written explanation for any visible drop and a P&L to match.

Which Kind of Off Year Do You Have?

The kind of decline determines the evidence. A lost client and a delayed project look similar on a statement, but they call for different proof.

A deposit decline and an expense-driven decline need different documents. If deposits held but net income fell because costs rose, the P&L and an accountant’s letter carry the explanation. If deposits themselves fell, the story is about revenue: a lost account, a gap between projects, an illness, a closed location.

Seasonal income deserves its own mention. If your business is lumpy by nature, the lender is averaging that lumpiness already. The explanation then is that the low stretch is a normal part of the cycle, and the evidence is the same pattern in earlier months.

Build the Evidence Package in This Order

Sequence matters, because each piece supports the next and the pieces must agree with one another.

1. Collect the full statement window. Use complete statements for every account in the window, every page, including blank-looking pages.

2. Run your own deposit scrub. Mark transfers, refunds, and loan deposits before the underwriter does. Be ready to source any large deposit.

3. Prepare a year-to-date P&L. Tie its revenue to the deposit totals. If the two disagree, find out why before submitting.

4. Get a CPA letter where it applies. An accountant can confirm the business and the expense ratio. Without a finished return, the scope of what the accountant can attest to is narrower, so ask for the specific confirmations the lender wants rather than assuming.

5. Write the letter of explanation. Details follow below.

6. Add recent-month proof. The latest statements, new contracts, signed work orders, or a pipeline summary show the direction of travel.

7. Add filing-status evidence. If an extension was requested, keep the confirmation. If the return has been filed, keep the e-file acceptance. A CPA note giving filing status and expected date also helps.

Document any adverse action you received as well: the notice, the stated reason, and any income worksheet the lender shared. Those tell you which problem to fix before you resubmit.

How to Write the Letter of Explanation

A strong letter is short, specific, and verifiable. It answers four questions: what happened, when, whether it is over, and what proves it.

A weak letter says income was down due to market conditions. A strong one names the cause and the dates, and points to an attachment.

Sample structure for an off year:

To the underwriter: My deposits fell between [month] and [month] because my largest client ended its contract on [date], which had represented a large share of my monthly revenue. I signed two replacement contracts beginning [date], and deposits from those contracts appear on the statements for [months]. My year-to-date P&L, prepared by [preparer], is attached and reconciles to my deposits. My tax return for the year in question has not yet been filed; it is on extension, and I expect to file by [date]. I am happy to provide the extension confirmation and any additional documents.

Notice what the sample does. It gives a cause, gives dates, states the current direction, and discloses the filing status without being asked. Disclosure up front reads as organized. Disclosure only after a transcript comes back empty reads as evasive.

A Worked Deposit Example

Consider a self-employed designer whose deposits run steady for the first several months of the window. Then a major client leaves and deposits fall for about three months. Two new clients start, and deposits climb back toward the earlier level over the last few months.

Underwriter reading one: average the whole window, which pulls income below the earlier level but above the trough. Reading two: weigh the recent months more heavily, which helps if recovery is clear. Reading three: shorten the window to the recovery period, which only works if the lender allows it and the months are strong.

The letter and P&L decide which reading is plausible. If the explanation is documented and recovery is visible, the file has a case for the fuller or friendlier reading. If the recovery is one good month, expect the conservative reading. Each lender’s guidelines control the actual calculation.

The Consistency Risk With an Unfiled Return

What you show the lender now should match what you eventually file. If your P&L reports one level of income and the return later reports a very different one, you have created a conflict in your own record.

Talk to your CPA before you submit a P&L. The accountant can tell you whether the figures are consistent with how the return will be prepared. This is also why the P&L should reconcile to deposits: the deposits are real money, and the return will have to account for them too.

Whether the return is on extension or simply not started changes the optics more than the documentation. On extension, you can show the confirmation and a filing target. Not started and past the extended due date, the file will likely draw more questions. In either case, one extension is allowed per tax year, so a second request is not an option. Tax treatment varies; consult a qualified professional about your own filing.

Apply Now or Wait?

Apply now if the recovery is already visible in several recent statements and your explanation is documented. Wait if you are one strong month into a rebound, because the next statement may change how the underwriter reads the trend.

A simple test: read your own statements as a stranger would. Does the last third of the window look better than the middle? Can you point to the reason? If yes to both, the file is ready. If the last months are still falling, a few more months of data may improve both the number and the narrative.

Occupancy also changes the picture. An owner-occupied file is a consumer mortgage, and the lender must verify the income or assets it relies on, so stated income is not allowed. A non-owner-occupied rental is business-purpose, and Regulation Z treats credit for non-owner-occupied rental property as business-purpose, unless the owner expects to occupy it more than 14 days in the coming year. That difference is why a rental purchase can sometimes move down a different path than a primary residence.

Red Flags and Common Mistakes

One more misconception: that a bank statement loan involves no verification. In fact, income is documented through deposits, and the lender still reviews credit, reserves, and the property.

If the Explanation Is Weak: Your Options

Three realistic paths exist. First, accept a lower qualifying income and adjust the loan amount or leverage to fit. Second, ask whether another lender’s program uses a different window or expense approach, since guidelines vary across the network. Third, change the program type.

For an owner-occupied file, the alternatives are a CPA-prepared P&L program or, for borrowers with large liquid holdings, asset depletion, which runs up to about 80% LTV on a primary residence through select lenders. Primary-residence bank statement purchases and rate-term refinances reach up to 90% LTV with strong files. Owner-occupied cash-out tops out at 80% LTV, or 75% with an accountant-prepared ratio, depending on loan size and credit. Investment-property cash-out tops out around 75% LTV. Loan sizes generally run from $125,000 to $3,500,000, with reserves commonly around six months of the housing payment. All of this is subject to lender guidelines.

For a rental purchase, a DSCR loan tests the property’s rent against its own obligation, qualifying primarily on property-level rental income covering the payment, subject to lender guidelines. Your unfiled personal year generally is not the qualifying basis, though credit, reserves, and the appraisal still apply. Programs below 1.00 coverage are available through select lenders, with leverage and terms adjusting. The complete DSCR loans guide walks through that lane. For more on choosing statements when a year hasn’t been filed, see Lendmire’s piece How to Choose Bank Statements When This Year’s Income Isn’t Filed Yet. Lendmire’s article Bank Statement HELOC Documentation When Tax Returns Are Not Filed Yet covers the paperwork side for equity borrowers.

Lendmire is a broker arranging financing through select lenders in its wholesale network, and qualification is not a commitment to lend.

About Lendmire

Lendmire (NMLS# 2371349) is a mortgage broker licensed for consumer lending in 16 states. Scotsman Guide named Lendmire a Top Mortgage Workplace in both 2025 and 2026.

References

1. IRS Tax Topic 304

2. IRS Income Verification Express Service

3. H&R Block extended deadline page