How a Self-Employed Mortgage Lender Counts Income That Just Rose

The Quick Read: A lender that underwrites around personal income rarely credits your newest, highest earnings in full, because it averages the last two tax years or the last twelve months of deposits, subtracts business expenses, and screens out one-time money, so the number it uses usually trails what you earn today. The size of that gap depends on the documentation path you choose. It also depends on when the jump started.

• Tax-return files usually average a rising trend, so the newest year is diluted by the older, lower one.
• Bank-statement files average the whole twelve-month window, so a jump that began late counts only for the months it covers.
• Net income after expenses is the headline figure on both paths, not gross revenue.
• A rental purchase or refinance can skip this exercise through a DSCR loan, which qualifies primarily on property-level rental income covering the payment, subject to lender guidelines.

Your income may have climbed in the last year or two. The question is how much of that climb a lender will actually count. This article walks through the mechanics step by step, then shows where the rules bend and what an investor can do about it.

What Number Does the Lender Start From?

The lender starts from net income, which is revenue minus business expenses and deductions. Gross revenue and total deposits are not the headline figure. A business can bring in a large amount and still show a modest net.

On a tax-return file, that net comes from the return itself. Lenders generally treat a borrower as self-employed when they own a meaningful share of a business, earn 1099 income, or file a sole-proprietor schedule. Most want a track record of steady self-employment, commonly two years, though some programs accept a shorter history in special cases.

On a bank-statement file, the starting point is deposits. According to Scotsman Guide, a self-employed borrower without W-2s can supply 12 to 24 months of personal or business statements. The lender then applies an expense factor, or uses a profit-and-loss statement from a third-party tax professional. Across the wholesale network Lendmire works with, the common window is 12 months of statements, with qualifying income built from deposit averages and lender-specific expense factors. Those factors differ from one program to the next, so no single formula applies to every file.

How Does the Two-Year Average Work?

Under a tax-return approach, the lender adds the net income from two years and divides by two. It then converts the result to a monthly figure. Non-cash items such as depreciation are typically added back first, because they reduce taxable income without reducing cash.

The average is meant to smooth out lumpy years. It also drags a strong recent year toward an older, weaker one. That drag is the entire story when income has just risen.

What Happens When Income Rises?

When income rises, a tax-return lender generally averages the two years and uses that middle figure. When income falls, the lender often uses the lower year instead. The treatment is lopsided, and it is lopsided on purpose.

Treatment varies by program and lender. Some lenders also want the increase to be explainable. A new contract, a changed client mix or a price change can help show that the jump is real and likely to continue.

Here is a modeled example. Index last year’s net income at 100 and this year’s at 150. The average is 125, which sits about 17% below your current earnings. Now picture a spike instead of a climb. Last year is 100 and this year is 200, so the average is 150, and the qualifying figure sits 25% below current earnings. The bigger the jump, the bigger the lag.

The lag fades as the older year drops out of the window. After one more filing, the two-year average reflects two strong years instead of one.

How a Late Jump Counts on Bank Statements

A twelve-month bank-statement file works differently. It does not average tax years, and it does not read your best month as your income. It averages eligible deposits across the whole window.

Say your monthly deposits sit at an index of 100 for six months and then step up to 160 for the last six. The window averages 130. That is about 19% below your current run rate, before any expense factor. If the jump began earlier in the window, more months carry the higher level and the average moves closer to current earnings.

Four things decide how much of the jump counts:

• When in the window the increase began.
• The expense factor the lender applies to business accounts.
• How clean the deposits look after screening.
• Whether a third-party profit-and-loss statement or expense letter supports a lower factor.

Lenders screen out transfers between your own accounts, loan proceeds and large non-revenue deposits. Lendmire’s piece How a Bank Statement Lender Counts Self-Employed Income covers that screening in more detail.

Add-Backs, Deductions and the Write-Off Trap

Heavy deductions shrink qualifying income on a return-based file. The return shows what you reported to the tax authority, and the lender works from that number. Some items come back, and others stay deducted.

This creates a timing trade-off. A borrower planning to buy may weigh claiming fewer deductions in the year before applying. Doing so lifts qualifying income but also raises the bill for that year. Tax treatment varies, so consult a qualified professional before changing how you claim deductions.

Where the General Rule Breaks

The averaging rule has several named edge cases. Each one can move the outcome in either direction.

Falling or lumpy income. On a tax-return file, a decline often means the lower year governs. Lumpy income may be averaged over a longer period or reviewed more closely.

Less than two years self-employed. Some programs accept one year of self-employment when the borrower was previously a W-2 employee in the same field. That is a program-specific exception, not a universal one.

Multiple accounts or locations. A business with several accounts needs every account reviewed.

Asset-heavy businesses. A flat expense factor can shortchange a business with heavy equipment or vehicle costs. An accountant-supported ratio may help, depending on the program.

S-corp and partnership income. Reported income may not equal income actually distributed to the owner. For contrast, the Fannie Mae Selling Guide analyzes income stability and notes that business income on a return may differ from cash paid out. That guide governs agency loans, not DSCR or bank-statement programs, but the point carries over: lenders care about money you can actually reach.

Deposit one-offs. Large irregular deposits, such as an asset sale or a family loan, can be excluded, which lowers the figure.

1099-only borrowers. Some programs use a share of gross 1099 income instead of bank statements. The share and the rules vary by lender.

Why Some Lenders Credit Rising Income and Others Do Not

Federal rules leave lenders room here. Under Regulation Z’s ability-to-repay provision, a lender may consider current or reasonably expected income, and self-employment and rental income are among the listed examples. The rule does not set one underwriting formula. Whatever income the lender relies on still has to be verified with reliable records.

That is why one lender may average two years while another reads twelve months of deposits. Both are making a documented judgment. Neither is required to credit your newest number in full.

Your Options When the Average Understates You

When the averaged figure sits well below your current earnings, you have four practical paths.

An interim profit-and-loss statement helps most when the increase is steady and supported by contracts or invoices. A lender may weigh it, but it can also cut the other way. A year-to-date statement showing lower income can undercut a strong prior-year return.

A bank-statement program usually fits when your recent deposits are strong and clean. Leverage on a primary residence purchase or rate-and-term refinance reaches up to 90% LTV through select lenders, with the top of that range reserved for stronger files. An asset-depletion alternative, which qualifies from liquid assets, reaches about 80% LTV on a primary residence. Loan sizes run roughly $125,000 to $3,500,000, and reserves commonly run around six months of the housing payment. These are typical ranges, subject to lender guidelines, and every file is underwritten individually.

For cash-out on an owner-occupied home, the ceilings are lower. A primary residence cash-out runs up to 80% LTV with a fixed expense ratio, or 75% with an accountant-prepared ratio. A second home cash-out runs up to 75% LTV. Cash-out on an investment property tops out around 75% LTV. Investment purchase leverage on bank-statement documentation varies by lender.

Occupancy Decides the Paperwork

An owner-occupied file, whether a primary residence or second home, is a consumer mortgage, and TRID disclosure rules apply. A bank-statement loan on a non-owner-occupied rental, including a short-term rental, is business-purpose and exempt from TRID. The property’s use determines which regime applies, so the two should never be mixed in planning. Short-term rental rules can vary by city, county, HOA and property type, so investors should confirm local rules before relying on projected rental income.

The DSCR Route Skips the Question

For a rental investor, there is a second path that avoids the rising-income puzzle. 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.

A DSCR loan is reviewed primarily on property-level rental income covering the payment, subject to lender guidelines. The question shifts from what you earn to whether the rent covers the debt. Many DSCR programs do not require personal-income documents. The complete DSCR loans guide explains how the coverage ratio works.

Consider the practical effect. Your income just jumped, but your returns still show the older, lower figures. A personal-income path may hold you back. On a pure rental, the rent against the monthly obligation is often the bigger lever. Rent that covers the full obligation with room to spare reads as a stronger ratio, and that has nothing to do with your last two tax years.

The trade-off is fair to state. Bank-statement loans are fully underwritten on credit, assets, reserves, the property and personal debts. DSCR files lean on the property. For an investor with several financed rentals or a high debt load, the property-tested lane often fits better. For a borrower buying a home to live in, DSCR is not an option, and the personal-income paths above apply.

Programs below 1.00 coverage are available through select lenders in the network, but LTV and terms adjust.

Market context is brief. HousingWire, citing Polygon Research and Optimal Blue data, puts non-QM volume at about $239 billion in a recent annual estimate, with bank-statement loans near 34% and investor and DSCR loans near 29%.

How to Document and Explain an Increase

An increase is easier to credit when the file explains it. A short checklist helps:

• Assemble the documents the program asks for, such as returns, statements and a profit-and-loss statement.
• Write a plain explanation of why income rose, such as a new contract or a larger client base.
• Keep deposits clean by avoiding transfers between your own accounts that muddy the average.
• Gather an accountant letter if your expense ratio runs higher than a flat factor would assume.
• Check every account if the business uses more than one.

Lendmire’s brokers see this pattern often. Files with a documented, steady increase tend to move more smoothly than files with one unexplained spike. A one-month surge is usually averaged down or screened out, while a sustained climb with clean deposits gets more credit.

Key Terms Defined

Net income: Revenue minus business expenses and deductions, the figure most lenders use as qualifying income.

Add-back: A non-cash deduction, such as depreciation, that a lender adds back to net income.

Expense factor: The share of business deposits a lender treats as operating cost on a bank-statement file, set by each program.

Deposit averaging: Dividing eligible deposits by the number of months in the statement window.

DSCR (debt service coverage ratio): Property rent divided by the property’s monthly debt obligation, used to qualify rental loans.

Run rate: What your income looks like today if the recent level continues.

What This Means for Your Next Purchase

Two questions help most. First, is the property a home you will live in, or a pure rental? Second, does your income show cleanly on the documents a lender will read?

If you are self-employed and want to see how the numbers work, Lendmire can help you compare bank statement loan options based on your deposits, the property, credit profile, leverage, and your goals. Lendmire is a mortgage broker that arranges financing through select lenders in its wholesale network. Consumer mortgage licensing covers 16 states, while its DSCR investor programs run in 40 states plus Washington, D.C. Reach the team at 828-256-2183 or through the quote request page. A rising income is good news, and the right documentation path decides how much of it counts.

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

About Lendmire

Lendmire — NMLS# 2371349 — is a mortgage broker that arranges bank statement, P&L-only, 1099-only and asset-based home financing in 16 states through wholesale lenders, on primary residences, second homes and investment properties. Every option is subject to the lender’s guidelines and full underwriting. Scotsman Guide named Lendmire a Top Mortgage Workplace in both 2025 and 2026.

References

1. Scotsman Guide: Rev Up the Engine for Non-QM Lending

2. Fannie Mae Selling Guide B3-3.5-01

3. CFPB Regulation Z § 1026.43

4. HousingWire: Non-QM Loans Guide