How Underwriters Define a Declining Income Trend on a Self-Employed Mortgage

The Quick Read: A declining income trend means the most recent period of self-employment income sits below the earlier period, or below the average the lender is using to qualify you. No published number sets the cutoff, so each lender or investor decides how large and how recent a drop has to be before it matters. The file then is reviewed on documented income under the applicable program, subject to lender guidelines.

• The comparison is year over year on traditional personal-income documentation, or month to month inside a bank-statement window.
• On tax-return files, a lower recent year usually replaces the average.
• On bank-statement files, deposits are the income, so a slide shrinks the coverage figure directly.
• A documented cause and stabilized figures help. Reserves, credit and leverage can offset some concern.
• Rental-income programs for investment property look at the property, not your income trend.

What Is a Declining Income Trend, Exactly?

It is a measured comparison, not a feeling. The underwriter picks an income figure, picks two periods, and checks the direction. If the later number is lower, the file carries a decline flag.

A decline is different from four other things that look similar:

• Seasonality. Income that dips and returns on a predictable cycle. It is the easiest pattern to explain, with prior-year statements and contracts as support.
• Lumpy deposits. Large, irregular payments that make a monthly average noisy. Uneven deposits hurt through the averaging math. Declining deposits hurt through the trend.
• A one-time expense or loss. A single hit to net profit that does not repeat.
• A pay-structure change. An owner who shifts between wages, distributions and retained earnings can show a lower line on paper without less cash coming in.

A true decline is the hardest to explain. The cause keeps going, and the figures keep falling.

Key Terms Defined

Declining income trend: A drop in qualifying income between two compared periods, or between the latest period and the average in use.

Qualifying income: The single monthly figure a lender uses to size the loan after adjustments and averaging.

Deposit averaging: Totaling eligible deposits across the statement window and dividing by the number of months, then applying an expense factor on business accounts.

Expense factor: A lender-set percentage that accounts for business costs when income comes from business bank deposits. It varies by lender, so no universal formula exists.

Letter of explanation: A written, specific account of why income fell and why it has stabilized, backed by documents.

Compensating factors: Strengths such as reserves, credit and lower leverage that can offset concern about a weak trend. Treatment is program-specific.

What Do Underwriters Actually Measure?

They measure the income line their program uses. On a tax-return file that is net income after write-offs, adjusted for non-cash items such as depreciation. On a bank-statement file it is the deposit stream after exclusions. On a rental-income program it is the property’s rent.

The periods depend on the file:

The traditional tax-return review is the agency model. Fannie Mae’s Selling Guide requires a written cash-flow analysis to determine stable, continuous income, and its five-year self-employment exception requires that individual returns show an increase in self-employment income over the past two years. That is a contrast, not the rule for the alt-doc programs below. It shows why a tax-return file is built to catch a decline.

How Does a Decline Change the coverage figure?

On a tax-return file, the lower figure usually wins over the average. Rising income tends to be averaged, and falling income tends to be cut to the lower year. A letter of explanation backed by documents is standard.

Run a modeled example with ratios, not dollars. Say an owner’s later year came in at about 80% of the earlier year. A two-year average would put qualifying income at 90% of the earlier year. Using the lower year puts it at 80%. Using a year-to-date figure that has recovered to 95% could land higher, but only if the underwriter accepts the figure as stable. Same borrower, three treatments, three different loan sizes.

On a bank-statement file, the steps run in order:

1. The underwriter strips out transfers between your own accounts, loan proceeds, refunds and one-off items. Unsourced large deposits come out too.

2. The remaining deposits are averaged across the window. Business accounts get an expense factor applied.

3. The underwriter then reads the direction of the recent months. The average can look fine while the last few months sit well below it. That pattern draws questions or a lower qualifying figure.

4. The file is judged against reserves, credit and leverage.

Most programs we place files with use 12 months of business or personal statements. The window choice matters. A 12-month window ending in a soft stretch pulls income down. A longer view can soften that, or it can hide a recent recovery. Run both before choosing a lender.

How Big Is Too Big?

There is no universal line. A mild, explained dip often survives. A steep, recent, unexplained one often does not. Anyone quoting an exact percentage trigger as a national rule is guessing.

Three things decide it:

• How far and how recently income fell. A drop that started eighteen months ago and has flattened reads very differently from one still falling.
• Whether the cause can be documented. A lost client or a one-time expense can be shown. A vague slowdown cannot.
• Whether the figures have stabilized. Recent months holding steady matter more than a story about recovery.

Across a wholesale network, the treatment varies a lot. Some lenders average the window and move on. Others weigh the last several months more heavily. The strictest overlays want the recent months at or near the average before they will use it. That spread is the reason to compare programs before you apply.

The federal layer does not set a number either. Under the Ability-to-Repay rule, a lender must make a reasonable determination that you can repay, and it may consider whether income is seasonal or irregular. The CFPB’s compliance guide recognizes self-employment as an employment type a creditor may consider. Non-QM loans still carry that duty. They are simply not bound to the old income-calculation standard for qualified mortgages. A bank-statement loan is fully underwritten. Only the documentation method changes.

How Does Entity Type Change the Read?

The line the underwriter reads depends on how you are paid.

For S-corp and partnership income, traditional personal-income review generally wants proof you can actually get at the money, such as a history of distributions. On a bank-statement file, the account the deposits flow into does much of that work.

What Does an Underwriter Ask For to Test the Trend?

A short list covers most files:

• A letter of explanation that names the cause, the timing and why it has stopped
• A year-to-date profit and loss, plus business bank statements
• Supporting documents for the cause, such as a lost-client notice or an invoice for a one-time expense
• Prior-year statements or contracts if the pattern is seasonal
• Sometimes an accountant’s input, or an extra year of returns

A good letter is specific and factual. It shows the cause is resolved and points to documents that prove it. A bad one is vague, emotional or contradicts the statements. Skip adjectives. Name the client, the month and the amount.

Evidence that moves a file from declining to stabilized is concrete: several recent months at or near the average, new contracts replacing lost revenue, or a year-to-date figure that matches the prior period.

Where the General Rule Breaks

Several edge cases change the outcome.

• A strong prior year does not rescue a weak current one. The recent weakness can truncate the average.
• Declining deposits plus repeated overdrafts. This is the combination that gets a file downgraded or declined.
• Blended files. If a self-employed spouse’s deposits are falling, the underwriter may look harder at the trend even when the wage income is strong. Lendmire’s piece Can a W-2 Spouse Carry the Mortgage Without Self-Employed Income? covers that structure.
• Aggressive write-offs. Heavy deductions and depreciation can make a business with strong cash flow look like a declining borrower on paper. This hits investors especially hard.
• Debt load. A lower income figure raises debt-to-income, and each financed property adds to the load in any program that counts it. Falling income hurts twice.
• Asset depletion. For declining deposits with strong savings, qualifying from liquid assets is an alternative. Closing funds come out of the balance first, and leverage tops out around 80% on a primary residence.

What Are the Options When the Tax-Return Route Fails?

You have three: wait, accept the lower figure, or switch documentation method. Waiting lets recent months stabilize. Accepting the lower figure shrinks the loan. Switching moves you to a program that reads deposits instead of net tax income.

Bank-statement programs through select lenders in Lendmire’s wholesale network use 12 months of statements, with qualifying income drawn from deposit averages and lender-specific expense factors. On a primary residence, leverage on a purchase or rate-term refinance runs up to 90% LTV through select lenders, with stronger files earning the top of the range. Owner-occupied cash-out on a primary residence or second home runs up to 80% LTV with a fixed expense ratio, or 75% with an accountant-prepared ratio, depending on loan size and credit. Loan sizes run roughly $125,000 to $3,500,000, and reserves are commonly around 6 months of the housing payment. All of this is subject to lender guidelines and a full review of the file.

Occupancy decides the disclosure regime. An owner-occupied file is a consumer mortgage, so TRID applies. A bank-statement loan on a non-owner-occupied rental, including a short-term rental, is business-purpose and exempt from TRID. Investment-property cash-out tops out around 75% LTV. Investment purchase leverage on bank-statement documentation varies by lender.

Bank-statement files are not a way around a decline. Deposits are the income, so a slide directly shrinks the number. The pick comes down to which window and which method show the business most accurately. Lendmire’s piece How to Pick a Self-Employed Mortgage Program in a Declining-Income Year walks through that comparison.

What About Investors Buying Rentals?

For a non-owner-occupied rental, a DSCR loan moves the question from personal income to property rent. That is the usual fit for a self-employed investor whose traditional personal-income documentation undersells their cash flow. It qualifies primarily on property-level rental income covering the payment, subject to lender guidelines. It does not remove credit, reserve, leverage or appraisal review, and the usual rent evidence is an appraisal rent schedule or a current lease. Programs below 1.00 coverage are available through select lenders in the network, but LTV and terms adjust. The complete DSCR loans guide covers the mechanics.

Mistakes to Avoid Before You Apply

1. Applying with the last three months well below the average. Wait or pick a longer window.

2. Sending a vague letter. Name the cause and attach proof.

3. Moving money between your own accounts without a trail. Transfers come out of deposits, and unsourced large deposits come out too.

4. Assuming one good year cancels one bad year. The trend is read, and the lower recent figure can govern.

5. Ignoring overdrafts. Falling deposits plus repeated overdrafts is the combination that hurts most.

Tax treatment varies; consult a qualified professional.

For current guidelines and terms, see Lendmire’s self-employed mortgage programs page.

About Lendmire

Lendmire, NMLS# 2371349, is a mortgage brokerage with consumer lending licenses in 16 states. Bank statement, P&L-only, 1099-only and asset-based mortgages are arranged through wholesale lending partners for borrowers whose tax returns understate their income, and each application is reviewed individually by the lender. Scotsman Guide named Lendmire a Top Mortgage Workplace in both 2025 and 2026.

References

1. Fannie Mae Selling Guide B3-3.5-01

2. CFPB ATR/QM Small Entity Compliance Guide