Do Mortgage Lenders Look at Gross or Net Income?

For a salaried or hourly employee, mortgage lenders use gross income — your total pay before taxes, retirement contributions, and insurance premiums come out. For a self-employed borrower, they use net profit from your tax return, with certain paper deductions added back. So the question of whether mortgage lenders use gross or net income has two answers, and which one applies to you depends entirely on how you earn.

Gross Income for W-2 Employees

If you receive a W-2, the lender starts with your gross pay. Fannie Mae’s underwriting guidance tells lenders to calculate monthly qualifying income directly from gross figures — either by dividing annual gross pay by 12 or by annualizing the gross amount shown on a single pay stub, depending on your pay frequency.¹

Lenders work from gross pay because it measures every applicant the same way. Two people earning the same salary can take home very different amounts depending on filing status, 401(k) contributions, or health insurance elections, and any of those choices can change next month. Gross pay strips out those personal decisions and leaves earning power, which is what the lender wants to compare against your debts.

Bonuses, Overtime, and Commissions

Variable pay counts as part of your gross income if you can show it’s reliable. Fannie Mae requires at least 12 months of documented bonus or overtime history before treating that income as stable, with a general preference for two years.¹ A shorter history may still qualify when other factors offset it, such as moving to a commission role in the same industry. Lenders generally average variable income across the documented period, so a year of lower bonuses can pull your qualifying figure down.

Net Profit for Self-Employed Borrowers

Self-employed applicants — sole proprietors, freelancers, and independent contractors — are evaluated on net profit from Schedule C of their Form 1040, not on gross receipts.² The logic follows the cash. A consultant who bills $200,000 and spends $90,000 on overhead has $110,000 available for a mortgage payment, and that lower figure is what the lender uses.

The net profit line isn’t the whole story, though. Some deductions reduce your taxable income without reducing the cash in your pocket, and Fannie Mae instructs lenders to add those back into your qualifying income. The add-backs on Schedule C include depreciation, depletion, business use of your home, amortization, and casualty losses.³ They can lift the number noticeably above what your return actually shows as profit.

Most lenders want to see two years of consistent self-employment in the same field before using the income at all, documented with two years of personal and, where applicable, business tax returns.⁴ A shorter self-employment history can sometimes be bridged by W-2s from a prior employer in the same industry.

S-Corporation and Partnership Income

If you take income through an S-corporation or partnership, your share shows up on a Schedule K-1 rather than Schedule C. Lenders can use K-1 income, but they first have to verify either that the business actually distributed that income to you or that the business has enough liquidity to support the distribution. A current-assets-to-current-liabilities ratio of one or greater generally satisfies the test.⁵ If the K-1 shows $120,000 but you only drew $60,000 and the business isn’t liquid, the lender may limit your qualifying income to what you actually received.

Why Gross Matters: The DTI Ratio

Whichever income figure applies to you, the lender uses it to calculate your debt-to-income ratio, the percentage of monthly income that goes to debt payments. The back-end ratio — your proposed mortgage payment plus every other recurring debt, divided by gross monthly income — carries the most weight, because it captures everything you owe.

DTI ceilings vary by program and are often more flexible than borrowers assume:

Conventional loans underwritten manually under Fannie Mae guidelines cap total DTI at 36 percent of stable monthly income, stretching to 45 percent with stronger credit scores and reserves. Loans run through Fannie Mae’s Desktop Underwriter can go as high as 50 percent.⁶
FHA loans use benchmarks of 31 percent for the housing payment and 43 percent for total debt, but these aren’t hard limits; with compensating factors and automated underwriting, approvals can reach 57 percent back-end DTI.
VA loans treat 41 percent as a guideline, not a cutoff, and lean heavily on residual income — the cash left after taxes, housing, and major debts. A borrower above 41 percent DTI can still qualify with residual income at least 20 percent above the VA’s regional minimum.

You may run into the old 43 percent DTI limit tied to “qualified mortgages.” The Consumer Financial Protection Bureau removed that cap in 2020 and replaced it with pricing-based thresholds.⁷ Lenders still have to consider DTI or residual income under the ability-to-repay rule, but no single percentage automatically disqualifies you.⁸

Non-Taxable Income Gets Grossed Up

Because DTI runs on gross income, lenders adjust income that isn’t taxed so it compares fairly to taxable wages. The adjustment is called grossing up. Fannie Mae lets lenders add 25 percent to the verified non-taxable portion of income, or a higher percentage if your actual combined tax rate exceeds 25 percent.⁹

Child support, which is fully non-taxable, grosses up straightforwardly: $2,000 per month becomes $2,500 for qualifying purposes. Social Security works differently because Fannie Mae treats only 15 percent of the benefit as non-taxable, so a $1,500 monthly benefit has a $225 non-taxable slice, grosses up by $56, and counts as $1,556.⁹ Child support and Social Security are recognized as non-taxable without separate documentation of their tax status; other sources may require it. The income also has to be likely to continue.

What You’ll Need to Document

Whatever figure the lender uses, it has to tie out to official records. For a W-2 employee, the standard package includes:

Pay stubs covering at least 30 consecutive days of employment, or 28 days if you’re paid weekly or biweekly, showing year-to-date earnings.¹⁰
W-2 forms from the previous two years.¹⁰
A verification of employment contacting your employer directly, confirming that you’re currently employed and that the income is expected to continue.¹⁰

Underwriters cross-check gross pay on your stubs against the W-2s and the employer verification, and any inconsistency between the three can slow the file. Self-employed borrowers substitute two years of personal tax returns and, where the business files separately, business returns — because the net profit line is the starting point, the returns themselves do the work that pay stubs do for a wage earner.

1
Fannie Mae. Base Pay (Salary or Hourly), Bonus, and Overtime Income
2
Internal Revenue Service. About Schedule C (Form 1040), Profit or Loss From Business (Sole Proprietorship)
3
Fannie Mae. Income or Loss Reported on IRS Form 1040, Schedule C
4
Freddie Mac. Qualifying for a Mortgage When You’re Self-Employed
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Fannie Mae. Analyzing Returns for an S Corporation
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Fannie Mae. Debt-to-Income Ratios
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Consumer Financial Protection Bureau. Qualified Mortgage Definition Under the Truth in Lending Act (Regulation Z) – General QM Loan Definition
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eCFR. 12 CFR 1026.43 – Minimum Standards for Transactions Secured by a Dwelling
9
Fannie Mae. General Income Information
10
U.S. Department of Housing and Urban Development. Mortgagee Letter 2019-01