Last year you lost your biggest contract. Or you bought a major piece of equipment and your CPA wrote off a big chunk of it. This year is back on track, maybe better than ever. But your tax return tells the lender a different story, and now they are calling your income "declining." A declining income self employed mortgage file is one of the most common reasons business owners get turned down, and one of the most fixable with the right program and documentation.
This guide explains how conventional underwriting treats a drop in income, how alternative documentation can show your recovery, what to put in an explanation letter, and when it truly makes sense to wait.
Key takeaways
- Conventional underwriting often uses the lower recent year, or may decline the file, when self-employed income drops.
- A one-time write-off or lost contract can look like a trend on tax returns even when it isn't.
- A recent bank statement window or a year-to-date P&L may show your current income more accurately.
- A clear, factual letter of explanation helps underwriters understand what happened.
- Sometimes waiting for a stronger year to post is the right call; a good loan officer will tell you honestly.
How conventional lenders treat declining income
Conventional underwriting for self-employed borrowers typically reviews your recent tax returns, often two years, and compares them. If the most recent year is higher, lenders often average the two. If the most recent year is lower, the rules get stricter.
Common outcomes when income declines:
- The lender uses the lower year instead of the average, which reduces your qualifying income.
- The lender asks for an explanation and evidence the decline has stopped or reversed.
- The lender declines the file if the drop is significant or ongoing, because they cannot be confident the income will continue.
The logic makes sense from the lender's side. A shrinking business is riskier than a stable one. The problem is that tax returns cannot always tell the difference between a shrinking business and a business that had one unusual year.
For a full breakdown of the methodology, see our post on how lenders calculate self-employed income.
Why your "decline" might not be a decline
Plenty of declines on paper are not real declines in the business. Common causes:
- A big equipment purchase. Accelerated depreciation or expensing can dramatically cut net income in the year of purchase. Lenders often add back depreciation on conventional loans, but not every deduction is added back, and the add-back may not fully offset the drop.
- A lost contract that has since been replaced. Revenue dipped, then recovered with new clients.
- A one-time expense. Legal fees, a relocation, a major repair, or a buildout.
- A strategic reinvestment year. You hired staff or expanded, cutting profit temporarily.
- Timing of revenue. A large payment landed just after year-end.
- A health or family event that reduced work hours for part of the year.
If your decline came from one of these, your job is to show the lender the bigger picture.
Showing recovery with a recent bank statement window
Bank statement loans calculate income from deposits over a set window of recent statements rather than tax returns. Because the window is recent and rolling, it may capture your recovery instead of last year's dip.
Many programs offer a 12-month or 24-month option. If your down period was more than a year ago, or was concentrated early in the window, a 12-month review may better reflect your current earnings. If the down period is in the middle of a 12-month window, a 24-month review might smooth it out. Our comparison of 12 vs. 24 month bank statement loans explains how to choose.
Lenders still look at trends within the window. A sharp drop in recent months can raise the same concerns as a declining tax return. Some underwriters will ask about it or use a lower figure.
Illustrative example
Illustrative example — not an offer or a guarantee of qualifying income.
Take a hypothetical commercial cleaning company owner who lost a major contract early last year, then replaced it with several smaller accounts. Their most recent tax return shows lower net income than the year before, partly because they also financed and expensed new equipment.
| Method | What it captures | Qualifying income picture |
|---|---|---|
| Conventional, two years of returns | Lower recent year likely used, or file questioned | Reduced or uncertain |
| 24-month business bank statements | Includes the dip and the recovery | Average of both periods |
| 12-month business bank statements | Mostly recovery period | Reflects current deposits |
If recent deposits average $30,000 per month and the lender applies a 50% expense factor, monthly qualifying income on the 12-month window would be $15,000. If the dip months are included in a 24-month window and drag the average down to $24,000 per month, the same factor would produce $12,000.
Had a rough year that doesn't reflect your business today? We'll compare review windows and programs to find the best fit. See if you qualify →
Using a year-to-date P&L
A year-to-date profit and loss statement can show what the business is earning right now. Some conventional files already require a YTD P&L when returns are older or income is declining. In non-QM, profit and loss loans may use a CPA- or tax-preparer-prepared P&L as the main income document.
A P&L helps when:
- Your recovery started recently and is not yet on a tax return
- Your expenses are lower than a standard bank statement expense factor would assume
- You have a professional who can prepare or review it
Our post comparing a P&L loan vs. a bank statement loan breaks down which tends to work better depending on your deposits and expense ratio.
Writing a strong letter of explanation
Underwriters are people. When they see a drop in income, they want to know why, and whether it will continue. A good letter of explanation answers both questions clearly.
What to include:
- What happened. State the cause in plain language: a lost contract, an equipment purchase, a health issue, a one-time expense.
- When it happened. Give the time period.
- Why it was temporary. Explain what changed: new clients, completed purchase, recovery from the event.
- Evidence. Reference supporting documents such as new contracts, invoices, a YTD P&L, or recent bank statements.
- Current status. Describe the business as it stands now.
Keep it factual and brief, usually a few paragraphs. Do not exaggerate, and do not include projections you cannot support.
When waiting is the right call
Sometimes the honest advice is to wait. Consider holding off if:
- The decline is ongoing. If revenue is still dropping, no program will look past it, and you may be stretching to take on a payment you cannot sustain.
- Your recovery is very recent. A few strong months may not be enough for some lenders. Building a longer track record may open better options.
- The numbers only work at the edge. If you barely qualify, any surprise in underwriting can sink the deal.
- A stronger tax year is about to post. If you file soon and the new return looks much better, it may be worth waiting for conventional options.
A good loan officer should tell you when waiting is smarter. If you have already been turned down, our guide on what to do when you are denied a mortgage as self-employed walks through next steps.
Trade-offs to keep in mind
Alternative documentation can help you qualify after a down year, but it comes with costs:
- Non-QM pricing is typically higher than conventional.
- Many programs require a larger down payment than many conventional loans.
- Reserve requirements are often higher.
- Some loans carry prepayment penalties, particularly for investment properties.
If you qualify with non-QM now and your income stabilizes, refinancing into a conventional loan later may be an option. That depends on market conditions and your future profile.
A step-by-step plan after a down year
If you are planning to buy soon after a weaker year, this sequence tends to work well:
- Pull your last two tax returns and recent bank statements and look at them the way a lender would.
- Identify the cause of the dip and gather proof: equipment invoices, the lost contract, new client agreements.
- Ask your CPA for a year-to-date P&L if your recovery is not yet on a tax return.
- Have a loan officer model several programs side by side: conventional, 12-month and 24-month bank statements, and P&L.
- Draft your explanation letter before you apply, so it is ready when underwriting asks.
- Decide whether to buy now or wait, based on which option leaves you comfortable, not just approved.
Frequently asked questions
Q: Can I get a mortgage if my self-employed income went down last year?
A: Possibly. Conventional lenders may use the lower year or ask for more documentation. Bank statement and P&L programs may reflect your current income more accurately. Not everyone qualifies, and the best path depends on why income declined.
Q: How much of a drop counts as "declining income"?
A: There is no single threshold. Lenders look at the size and cause of the drop and whether it appears to be continuing. Even a moderate decline can trigger extra review on a conventional loan.
Q: Does a big equipment write-off count as declining income?
A: It can appear that way on your tax return. Conventional lenders often add back depreciation, which may help, but not all deductions are added back. Bank statement programs ignore tax deductions and look at deposits instead.
Q: What should my letter of explanation for declining income say?
A: Explain what caused the decline, when it happened, why it was temporary, and what has changed since. Reference supporting documents like new contracts or a year-to-date P&L. Keep it brief and factual.
Q: Should I wait until my next tax return to apply?
A: If your next return will show a strong recovery and you want conventional financing, waiting may help. If you need to buy sooner, a bank statement or P&L program may work now. A loan officer can compare both paths for you.
Ready to show lenders where your business is now?
One rough year should not define your business, or your mortgage options. The right documentation and the right program can let underwriters see your recovery instead of just last year's dip.
Matador Lending compares tax-return, bank statement, and P&L programs across 150+ wholesale lenders. We will be straight with you about what fits now and what might fit better later.
See if you qualify → — no credit pull to check your options. Prefer to talk? Call or text 713-366-4668.
This article is general education, not tax, legal, or financial advice, and not a commitment to lend. Loan programs, guidelines, and availability vary by lender and state and change without notice. Non-QM loans are subject to credit approval, income and asset verification, and appraisal. Talk with your CPA about tax questions. Small Business Mortgages is a marketing brand of Matador Lending, NMLS #2072896. Equal Housing Opportunity.