How Self-Employed Deductions Impact Your Mortgage

TL;DR

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Self-employed borrowers may qualify for less on a conventional mortgage when tax deductions reduce the net income an underwriter uses. Bank statement loans can assess deposits instead, but often carry higher rates and apply their own expense assumptions.

A Kiplinger report says tax deductions can reduce the income lenders count when self-employed borrowers apply for a conventional mortgage, even when their businesses bring in more cash than their tax returns show. The report describes bank statement loans as one alternative because they assess account deposits, but says those loans typically carry higher rates than comparable conventional mortgages.

For a conventional mortgage, underwriters generally start with business income reported on tax returns, rather than total revenue or money moving through business accounts. The report says they commonly use Fannie Mae Form 1084 to adjust cash flow, average income over about two years and convert it to a monthly amount for assessing debts and borrowing capacity. A lower calculated monthly income can reduce the amount a borrower qualifies to borrow.

Some deductions may be added back in that calculation. According to the report, the Fannie Mae worksheet adds certain noncash expenses, including depreciation, amortization, depletion and the home-office deduction. Ordinary cash expenses, such as supplies, subcontractors, vehicle costs, insurance, fuel and travel, generally reduce business income used in underwriting.

Bank statement loans use a different approach: lenders review deposits over 12 or 24 months, remove items that are not recurring business revenue, and apply an expense factor to estimate income. The report says some lenders commonly count about half of deposits in business accounts as income. Actual methods vary by lender and program. It also reports that these nonqualified mortgage loans typically cost about 0.5 to 1 percentage point more than a comparable conventional loan, and that some programs require reserves.

Why Write-Offs Can Change Loan Size

The distinction matters because taxable profit and mortgage qualifying income are not always the same figure. A borrower may have enough cash flow to make monthly payments but still fall short under a conventional underwriting calculation based on tax returns. That can affect eligibility or the size of the loan offered; the report does not establish that any particular borrower will be denied.

Choosing how to document income also has a cost. A borrower weighing a bank statement loan against conventional financing needs to compare the lender’s income calculation, interest rate, fees and reserve requirements. A higher rate can mean higher payments over the life of a loan, while cutting deductions to raise reported profit could increase tax liability. The appropriate outcome depends on a borrower’s finances and the lender’s rules; the report does not provide a universal recommendation.

Two Ways Lenders Assess Business Income

The report places the issue against the scale of self-employment and freelance work in the United States. It cites Bureau of Labor Statistics data putting self-employment at about 16.8 million Americans as of late 2025, or more than 10% of the workforce. It also cites Upwork research estimating about 64 million people did some freelance work over the course of a year, close to 38% of workers. Those measures describe different groups and timeframes, and do not indicate how many people applied for mortgages.

For bank statement underwriting, the lender examines deposits rather than simply accepting every credit as business income. The report says transfers, loans and tax refunds are among the items that may be excluded. Overdrafts and returned payments can also attract scrutiny. Separate business and personal accounts, clear records linking deposits to invoices, and explanations for large or irregular deposits can help an underwriter identify recurring revenue, though they do not guarantee approval.

The report says a CPA-prepared expense statement may support a lower expense factor when a business’s actual costs are below the lender’s default assumption. Its example: with $20,000 in monthly deposits, counting 50% would produce $10,000 in qualifying income; if documented expenses are 25%, a lender might count $15,000. That is an illustration, not a standard calculation or promised outcome. The lender may require the statement in a particular format.

“The underwriter doesn’t look at what your business earned.”

— Kiplinger report

Lender Rules Shape the Calculation

The supplied report does not identify a specific borrower, loan application or mortgage decision, and it gives no individual lender’s underwriting file. Its figures describe practices and examples, not binding terms for every loan. Expense factors, eligible deposits, documentation and reserve rules can vary by lender and program. The source material also does not specify the report’s publication date, so its late-2025 workforce figures should not be read as current counts beyond the date stated.

It is also unclear whether a particular lender will accept a CPA-prepared expense statement, how it will calculate income from a borrower’s accounts, or whether a 12-month or 24-month review period will produce the stronger result. Borrowers should obtain program-specific terms directly from a lender or mortgage professional before comparing options.

Review Income Before Applying

The practical next step described in the report is to review income documentation before submitting a mortgage application. A mortgage broker familiar with bank statement loans or a loan officer can assess whether tax-return income or account deposits offer a stronger qualifying picture, and explain which records the lender will require. Borrowers can prepare by keeping accounts organized, retaining invoices and records for cash deposits, and documenting the source of unusually large credits.

Applicants considering a CPA expense statement should ask the lender first about its format and whether the program accepts it. They can also ask how the lender treats noncash deductions, which months it will review, what rates and fees apply, and whether reserves are required. The next concrete milestone is a lender’s review of the borrower’s documents; the report provides no announced policy change or scheduled industry decision.

Key Questions

Do self-employed tax deductions automatically prevent mortgage approval?

No. The report says deductions can lower income used in conventional underwriting, but approval depends on the borrower’s documented finances, debts and the lender’s criteria. Some noncash deductions may be added back under the worksheet described in the report.

Which deductions can affect conventional mortgage income?

According to the report, cash operating expenses such as supplies, subcontractors, fuel, insurance and travel generally reduce net business income. It says the Fannie Mae worksheet may add back certain noncash items, including depreciation, amortization, depletion and a home-office deduction.

How does a bank statement loan calculate income?

It generally reviews deposits over a set period, such as 12 or 24 months, excludes credits that are not recurring business revenue and applies an expense factor. The method and the share of deposits counted vary by lender and program.

Are bank statement loans more expensive?

The Kiplinger report says they typically run about 0.5 to 1 percentage point above a comparable conventional loan, and some programs require reserves. Borrowers should confirm the rate, fees and requirements available to them directly with a lender.

Source: rss