How a Lender Counts Income for a Conventional Loan Purchase

The Quick Read: A lender builds one monthly number from income that is documented, stable, and likely to continue. That number is usually lower than what your paystub suggests, because variable pay gets averaged and some income can’t be used at all. The number then becomes the bottom half of your debt-to-income ratio, which decides how much house the file can carry.

• Lenders use gross income (before taxes), not take-home pay.
• Variable pay such as bonus, overtime, and commission is averaged, and a declining trend is not averaged upward.
• Self-employed income comes from filed traditional personal-income documentation, not from revenue or deposits.
• Your job is checked again right before closing, so a change mid-contract matters.

What Does “Qualifying Income” Actually Mean?

Qualifying income is the verified gross monthly income a lender is willing to count. It starts with what you earn. Then the lender removes anything it can’t document or expects to stop.

The test is simple: the income has to be documented, stable, and likely to continue. Freddie Mac defines stable monthly income as income from acceptable, verifiable sources that can reasonably be expected to continue for at least the next three years. Fannie Mae’s rule is narrower. It asks for documented three-year continuance when an income source has a defined end date or depends on using up an asset, per Selling Guide B3-3.1-01.

Here is how that plays out. A salary at a long-term employer passes all three tests with little effort. A bonus you received once does not. Income paid in cryptocurrency can’t qualify under Freddie Mac’s rules at all.

Most surprises come from this gap. Borrowers quote the pay they earn. The lender quotes the pay it can prove will keep arriving. The two numbers rarely match.

Why Gross Income, and What Is It Divided Into?

Gross income is the bottom of your debt-to-income ratio (DTI). The CFPB defines DTI as all monthly debt payments divided by gross monthly income, which is earnings before taxes and deductions. It also notes that loan products and lenders set different limits.

Every dollar of income the lender can’t count pushes DTI up. That is why the qualifying figure matters more than the paystub.

On the conventional loan programs we place files with, the automated underwriting finding governs most files, with a total ratio ceiling of 50%. Manually underwritten loans use 36% or 45% tiers, tied to the credit score and reserve factors in the Fannie Mae Eligibility Matrix. All of this is subject to lender guidelines and full file review.

Many articles still repeat 43% as a hard federal cap. That number came from an older Qualified Mortgage rule. It was replaced by a price-based test, so it isn’t today’s conventional ceiling.

How Is Each Type of Income Counted?

Each income type has its own recipe. The table shows the usual treatment and the usual reason a source gets cut back. Details vary by lender and file.

A few notes on the table. Part-time and second-job income can count when it is documented and steady. Nontaxable income, such as certain benefits, may be grossed up because you keep all of it. Fannie Mae tells lenders to give it special consideration. The size of the adjustment is a lender-level detail, so ask your loan officer how it will be handled on your file.

How Is Variable Income Averaged?

Variable income is averaged over time, and the average only goes up if the trend supports it. Fannie Mae recommends a two-year history for bonus, commission, overtime, and tips. A shorter history, no less than 12 months, may be acceptable when positive factors offset it.

The lender follows a pattern:

1. It sets your pay frequency and turns year-to-date earnings into a monthly figure. 2. It compares that figure to prior years. 3. If the trend is stable or rising, it averages year-to-date and prior-year earnings over at least 12 months. 4. If the trend is falling, it does not average the income upward. Expect a lower figure, or none.

Run through a modeled borrower. Say you earn a steady base salary plus overtime. Last year’s overtime was solid, but this year’s pace is clearly lower. The lender will not take the better year. It will lean toward the weaker recent pattern, because the recent pattern predicts what comes next. Every figure in this example is illustrative, not a market fact.

Documentation for these income types is usually a recent paystub plus two years of W-2s, or a completed verification of employment form, along with a verbal check. Fannie Mae’s March update has loosened this for variable base income, which now needs only the most recent W-2 and paystub.

What About Self-Employed Borrowers?

Self-employed borrowers qualify on net income after business expenses, not gross revenue. The lender reads your signed federal personal tax returns, usually for the past two years, and completes a cash flow analysis. Fannie Mae requires that analysis, on Form 1084 or an equivalent, per its self-employed borrower rules.

Two things follow from that. First, deductions that lower your tax bill also lower your qualifying income. Second, a rising two-year trend helps and a falling one hurts. Tax treatment can depend on your situation; borrowers should speak with a qualified tax professional before relying on any deduction or credit.

Own less than 25% of a business? Then only your share of the K-1 income counts when business returns are provided, and the lender adds a verbal employment check. Work for a family member’s company? Fannie Mae asks for at least 12 months with the business and signed returns showing you own less than 25%.

Does the Appraisal Change My Income?

No. The appraisal sets value and loan-to-value, not your pay. The one exception involves rent from a two- to four-unit home you live in. There, Fannie Mae’s rental income rules call for eligible monthly gross rent to be reported, supported by a market rent schedule when an appraisal is required.

Occupancy also decides leverage. On the loan programs we place, a one-unit principal residence goes to 95% LTV, or 97% when a first-time buyer is on a fixed-rate loan. Two- to four-unit principal residences go to 95%, second homes to 90%, and investment property lower. The exact numbers vary by lender and program and follow a full review of property, leverage, and credit.

Where Does the General Rule Break?

Most of the exceptions involve rent from a home you occupy, a co-borrower, or a business tie. Here are the named cases.

Rent from your own home. Rent from a principal residence or second home generally can’t be used to qualify. There are exceptions for boarder income and for a one-unit home with an existing accessory dwelling unit (ADU). For an ADU, the rent generally has to stay at or under 30% of total qualifying income, and only on a purchase or limited cash-out refinance.

HomeReady boarder income. Boarder income can reach 30% of qualifying income under HomeReady, per Fannie Mae’s flyer. The lender looks for documented receipt in at least nine of the last 12 months, plus proof of shared residency. HomeReady and Home Possible carry an income limit of 80% of area median income. Confirm the current terms, since matrices change.

Non-occupant co-borrowers. A relative who won’t live in the home can add income, but the rules tighten. The Eligibility Matrix limits LTV with a non-occupant borrower to under 90% for manual underwriting and under 95% for automated. The occupying borrower’s DTI ceiling is also lower on manual files.

Defined end dates. Income that expires needs documented three-year continuance. Think of a contract that ends next year or payments that run out.

What Gets Checked Between Contract and Closing?

Your job is verified again shortly before closing. For borrowers using employment income, Fannie Mae requires a verbal verification of employment, and for employed borrowers it must fall no more than 10 business days before the note date. Self-employed borrowers have a separate window. A lender may sometimes obtain the verbal verification after closing, but if it can’t be obtained, the loan is ineligible for sale to Fannie Mae. Fannie Mae’s current rules let lenders use any reasonable, verifiable method, and the timing is unchanged.

The verbal verification rules also say a change in employment status can significantly affect repayment capacity and must be fully reevaluated. Temporary leave confirmed by the employer is treated as employed.

The practical lesson: don’t change jobs, drop hours, or switch pay structure between approval and closing without calling your loan officer first. A pre-approval is not a lock on your income. It’s a snapshot.

What Income Doesn’t Count?

Several things look like income and aren’t. Undocumented cash doesn’t count. A raise that hasn’t started doesn’t count. A one-time windfall isn’t income, though it may help as an asset. A pile of deposits isn’t income either, because deposits don’t show a stable source.

How Does Income Turn Into a Decision?

Income feeds DTI, and DTI sorts your file into tiers. Lower tiers carry different credit-score and reserve expectations. The wholesale conventional programs we use start at a 620 decision score, or 640 on an adjustable rate under manual underwriting, and the automated finding governs most files.

Qualifying is not the same as comfort. Look at it this way: at a 36% DTI, 64 cents of each dollar remains for everything else. A file can be approved at a higher ratio and still leave thin monthly slack. Treat the ratio ceiling as the lender’s limit, not your target.

Adding a qualified co-borrower, boarder, or ADU can raise qualifying income. It does not lower the housing payment, and the added income has to keep arriving after closing.

Above 80% LTV, mortgage insurance is required. You can request cancellation at 80% of the original value with good payment history, and it ends automatically at 78%. Published typical annual premiums run from 0.58% to 1.86% of the balance, a range and not a quote. Final terms depend on the lender’s guidelines, the property type, and the borrower’s complete credit picture.

Key Terms Defined

Qualifying income: the verified gross monthly amount a lender agrees to count.

Gross income: earnings before taxes and deductions.

Debt-to-income ratio (DTI): your monthly debt payments divided by gross monthly income.

Variable income: pay that changes, such as overtime, bonus, or commission.

Verbal verification of employment: a pre-closing check that your job is still in place.

Gross-up: an upward adjustment of nontaxable income to reflect that no tax is taken from it.

What Should You Do Before You Apply?

Gather your documents by income type. Salaried borrowers need recent paystubs and W-2s. Variable earners should add year-to-date totals so the trend is visible. Self-employed borrowers need two years of complete signed returns with all schedules. Exact terms depend on lender and investor guidelines, credit profile, reserves, and property review.

Then ask your loan officer three things. Which income will be counted, and at what monthly figure? Which sources look weak, and why? What would change the number between now and closing? If your income recently dipped, ask before you apply. Lendmire’s piece How a Lender Counts a Seasonal Income Dip on a Bank Statement Mortgage is useful if your pay runs in cycles.

If you are buying a home and want to see whether a conventional loan fits your file, Lendmire can help you compare the options and what each one asks of the file. Details on conventional loan programs are on its site. All program figures are subject to lender guidelines and full file review, and nothing here is a commitment to lend.

For your own numbers, request a scenario review with Lendmire.

About Lendmire

Lendmire (NMLS# 2371349) is a mortgage brokerage serving homeowners and home buyers in 16 states. FHA, VA, conventional and jumbo purchase and refinance loans are arranged through wholesale lending channels; Lendmire brokers the financing and the lender underwrites each application. Scotsman Guide named Lendmire a Top Mortgage Workplace in both 2025 and 2026.

References

1. Freddie Mac Guide, Section 5301.1

2. Fannie Mae Selling Guide B3-3.1-01, General Income Information

3. CFPB defines DTI

4. Fannie Mae Eligibility Matrix

5. Fannie Mae Selling Guide B3-3.3-02, Bonus, Commission, Overtime and Tip Income

6. Fannie Mae Selling Guide B3-3.2-01 Self-Employed Borrower

7. Fannie Mae’s rental income rules

8. Fannie Mae’s flyer

9. Fannie Mae Selling Guide B3-3.1-04, Verbal Verification of Employment