How Much Income a Declining-Year Self-Employed Borrower Loses to Expenses

The Quick Read: A self-employed borrower is qualified on net profit after business expenses, not on gross revenue. When income is falling, the lender usually counts the lower year instead of the two-year average. So the income you lose is whatever the return shows after expenses, minus the non-cash items a lender will add back.

• No single percentage applies to everyone. The loss comes from your own return, and the formula is simple: revenue minus expenses, plus add-backs.
• A falling trend usually breaks the average. A rising trend gets averaged down, which is the unfair part.
• Depreciation and other non-cash deductions are often credited back. Cash costs are not.
• Bank statements and rental-income loans measure income differently, so a bad tax year hurts them less or in a different way.
• Deductions that cut your tax bill also cut your qualifying income for the two return years a lender reviews.

Key Terms Defined

Net income is what is left of business revenue after expenses and deductions. It is the number lenders start from.

Qualifying income is the monthly income a lender counts after its own adjustments. It is often lower than what you actually earned.

Add-back is a deduction on your return that a lender credits back, because no cash left your account. Depreciation is the classic example.

Schedule C is the tax form where a sole proprietor reports business profit or loss. Line 31 is the net profit figure.

Bank-statement loan is a mortgage that is reviewed around deposits in 12 months of business or personal bank statements instead of traditional personal-income documentation.

Expense factor is the percentage of business deposits a lender assumes went to costs, so only the remainder counts as income.

DTI (debt-to-income ratio) compares your monthly debts to your monthly income. Lower qualifying income pushes DTI up.

DSCR loan is an investor loan that qualifies primarily on property-level rental income covering the payment, subject to lender guidelines. DSCR stands for debt service coverage ratio.

LTV (loan-to-value) is the loan amount divided by the property value.

Where Does the Income Go?

Start with the tax return, not your bank balance. Sole proprietors begin at Schedule C net profit on line 31, and every lender adjustment builds on that figure, as StatementsReady lays out. That profit then flows to Schedule 1 and Form 1040, where it feeds adjusted gross income, per Reed Corp’s Schedule C explainer. The return you filed to minimize taxes is the same document the lender reads to size your income.

The formula has three moving parts:

1. Take net profit from the return.

2. Add back non-cash items such as depreciation.

3. Subtract items the lender will not allow, such as non-deductible meals.

What is left is qualifying income. The income lost to expenses is simply revenue minus that number.

Here is a hypothetical borrower. These figures are modeled assumptions, indexed so that year-one revenue equals 100. They are not market data.

Takeaway: the lender counts 30, not the 37.5 average, so the lower year costs this borrower 20% against the average.

Revenue fell 15 points and expenses did not move. That is why net profit fell by more than a third, and the expense ratio crept up noticeably as a share of revenue. Of the 85 in year-two revenue, 55 never reaches qualifying income.

For a real-world sense of scale, StatementsReady’s worked example shows an averaged tax net profit of $85,000, lifted by $17,500 in add-backs to $102,500 a year. Add-backs are not a rounding error. They can move the answer by double digits.

Which Expenses Come Back, and Which Don’t?

Non-cash expenses tend to come back. Cash expenses tend to stay deducted. The test is simple: did money actually leave the business?

The table below shows how return-based underwriting usually sorts common expense types. It is a general pattern, and the bank-statement and DSCR loans discussed later work differently.

Takeaway: a lender will not credit back a cash cost, but it will listen if you document that the cost was one-time.

Add-backs cut both ways. Say you bought equipment in year one and took a large depreciation deduction. Year two has a smaller add-back, so the decline looks worse than the cash flow really was. Always compare adjusted income year to year, not just the bottom line of the return.

Revenue Drop or Expense Spike?

The same drop in net profit can mean very different things. A lender, and you, should separate the two.

Consider two hypothetical borrowers. Both start at revenue 100, expenses 60 and net profit 40 in year one. Both report net profit of 25 in year two, a 15-point drop. All figures are modeled.

Borrower A: revenue fell. Revenue slid to 85 with expenses flat at 60. Depreciation stays at 5, so adjusted income drops from 45 to 30. The full 15-point decline survives. Nothing is recoverable, and the file needs a story about why revenue will stabilize.

Borrower B: expenses spiked. Revenue held at 100, but expenses rose to 75. Ten of those points are a one-time equipment write-off, which is non-cash and adds back with the normal 5 of depreciation. Adjusted income lands at 40 against 45 the year before. Only 5 points of the 15-point reported drop remain.

Same tax-return headline. Very different file.

Borrower B’s lower-year figure is 40, only a modest haircut from the 42.5 average. Borrower A’s is 30. The lender’s job is to ask which situation it is looking at, and the borrower’s job is to make that easy to see.

Why a Falling Year Gets Treated Differently

When income rises, lenders average the two years. When it falls, they usually use the lower year. The logic is conservative: the most recent trend predicts the next one better than a blend of old and new.

Takeaway: rising earners lose a little, falling earners lose more, and the rule is not symmetric.

The effect on buying power is larger than most people expect. Reinvent NY offers a rule of thumb that cutting taxable income by $50,000 reduces borrowing capacity by roughly $200,000. Treat that as illustrative, since it depends on the debt ratios a lender applies. The direction is the point. Lower qualifying income raises DTI, and DTI caps the loan.

The same Reinvent NY commentary notes that deductions taken to save taxes keep depressing recognized income across the two return years under review. Planning has to happen before you apply. Once a return is filed, the numbers are fixed.

Is the Decline Temporary or Structural?

Lenders ask one question underneath every other: will this income recover? You can answer it with evidence.

Signs of a temporary dip:

• A one-time purchase, such as equipment or a vehicle, explains the expense jump.
• Year-to-date profit and loss shows recovery against the same period last year.
• Recent bank deposits are climbing back.
• The cause is external and specific, such as a lost contract that was replaced.

Signs of a structural decline:

• Revenue keeps falling, not just net profit.
• Costs are recurring, such as higher payroll or rent.
• No pipeline of new work backs the story.

Expect to submit a letter of explanation and a year-to-date profit and loss statement. Match the proof to the cause. A one-time equipment buy needs the invoice and depreciation schedule. A lost client needs the replacement contract. A marketing push needs evidence it is paying off. Vague letters get little credit.

Two years of history is the standard, and some programs accept one year when you worked in the same field as an employee. Owning 25% or more of a business also usually triggers a request for the business’s own returns.

The Bank-Statement Lane

Bank statements measure cash coming in, not what the return reports after deductions. That shifts how a declining year plays out.

Across Lendmire’s wholesale network, bank-statement loans use 12 months of business or personal statements. Qualifying income comes from deposit averages, multiplied by your ownership share and a lender-specific expense factor, then spread over the months reviewed. Business-account deposits get an expense factor because they are gross. Personal-account statements usually skip it because those deposits are presumed to be net already. Transfers and non-business deposits are removed first.

The expense factor varies by program, so no universal number exists. On owner-occupied cash-out loans, the network uses a fixed expense ratio, and an accountant-prepared ratio can sometimes document a lower one. Whether the borrower is a fit depends on the file.

Typical leverage on this lane, subject to lender guidelines:

• Up to 90% LTV on a primary-residence purchase or rate-and-term refinance, with the top of the range reserved for stronger files.
• Up to 80% LTV on an owner-occupied cash-out (primary or second home) with the fixed expense ratio, and 75% with an accountant-prepared ratio.
• Up to about 75% LTV on an investment-property cash-out.
• Investment-property purchases on bank statements vary by lender.
• Loan sizes run roughly $125,000 to $3,500,000, with reserves commonly around six months of the housing payment.

An asset-depletion alternative is reviewed against liquid assets, up to about 80% LTV on a primary residence. Lendmire is a broker arranging these loans through select lenders. Its consumer mortgage licensing covers 16 states, and every file is underwritten individually. Every figure here varies by lender and program — guidelines, property type, leverage, and credit profile all apply.

Here is the practitioner pattern. Dip-year owners often do better on 12 months of deposits than on two years of traditional personal-income documentation, because the deposits show the recovery that the filed returns miss. Rising earners benefit for the opposite reason. Two years of averaging drags them down, and deposits show where they are now. Still, a bank-statement loan does not skip declining-income review. Deposit screening, overdraft limits and trend checks still apply.

For more on matching program to profile, see Lendmire’s piece How to Pick a Self-Employed Mortgage Program in a Declining-Income Year.

Where the General Rule Breaks

The lower-year rule is a default, not a law. These edge cases move the answer.

• Heavy add-backs. A scary net-profit drop can shrink once depreciation and other non-cash items are credited back, as Borrower B showed.
• Shrinking add-backs. The reverse also happens. A smaller depreciation deduction in the later year makes a flat business look like a declining one.
• Lender-set thresholds. Lenders differ on how big a decline triggers extra scrutiny or a lower qualifying figure. No universal cutoff exists, so ask the lender before assuming one.
• Short history. Under two years is workable in some programs and a dead end in others.
• Rental income on the return. Most rental income sits on Schedule E, not Schedule C, so it shows up in personal income differently from business profit.
• Loss years. A business loss in the later year can drag qualifying income to zero on a return-based loan. That is the case where another lane is worth a look.

What the Investor Decision Looks Like

Investors with a declining year often have a choice of lane. Pick based on what the property is for.

Takeaway: the same declining year can hurt a lot, a little, or barely at all, depending on the lane.

DSCR loans are designed for non-owner-occupied investment properties. Because they are business-purpose investor loans, they are reviewed differently from a standard owner-occupied mortgage. They qualify primarily on property-level rental income covering the payment, subject to lender guidelines, so your personal-income write-offs matter much less. They still require an appraisal and proof of rental income. They do not mean no paperwork. Owner-occupied bank-statement files, by contrast, are consumer mortgages covered by TRID disclosure rules, while a bank-statement loan on a non-owner-occupied rental is business-purpose and exempt.

So the choice is practical. Buying a primary residence or doing an owner-occupied refinance means income documentation matters, and a bank-statement loan may fit better than a lower-year return. Buying a pure rental usually points toward the DSCR route, where the property’s numbers carry the file. Tax treatment can depend on how the funds are used and how the property is held; investors should keep clear records and speak with a qualified tax professional before relying on any deduction.

Learn how the property-side route works in Lendmire’s complete DSCR loans guide.

Where to Go From Here

The site’s illustrative calculator can give you a rough estimate first. Programs are subject to lender guidelines. This is not a commitment to lend.

About Lendmire

Lendmire (NMLS# 2371349) is a mortgage brokerage built around DSCR investor lending, with programs available in 41 markets, including Washington, D.C. DSCR lenders commonly evaluate rental-income coverage instead of personal income paperwork — a practical fit for LLC-owned and multi-property investors. Terms vary by lender, property, leverage, and program. Scotsman Guide named Lendmire a Top Mortgage Workplace in both 2025 and 2026.

References

1. StatementsReady – Self-Employed Personal Financial Statement

2. Reed Corp’s Schedule C explainer

3. Reinvent NY – Self-Employed Mortgage Deduction Trade-Off