How Bank Statement Loan Income Is Calculated With Commission and Base Pay

The Quick Read: A bank statement loan turns a deposit history into monthly income, so base pay that runs through payroll is usually documented with pay stubs and W-2s, while commission paid outside payroll is averaged from eligible deposits over the statement window, with an expense factor applied on business accounts, and the two streams are then added together.

• Base and commission often follow different documentation routes, and the route depends on how each one is paid.
• Only eligible deposits count. Transfers, refunds, loan proceeds and one-time items come out first.
• Business statements take an expense factor. Personal statements are usually read closer to raw deposits.
• The result feeds a debt ratio, which limits how much payment you can carry. That includes the payment on an investment property.

The Short Answer in One Formula

The core formula is simple. Take the eligible deposits, apply the expense factor if the account is a business account, and divide by the months reviewed. That figure is your monthly qualifying income.

Most programs the brokerage places files with use 12 months of statements, personal or business. A trade-press description of the standard setup in Scotsman Guide says market programs commonly ask for 12 to 24 months and uses a 50% expense factor as its example. Across Lendmire’s network the window and the factor are set by each lender’s program sheet. No one should promise you a universal factor.

Now the mixed-pay question. If you earn a salary plus commission, there is no single formula that blends them inside one account. The practical approach treats them as two streams. Each stream is documented the way it arrives, then the monthly figures are stacked.

Qualification here runs on documented income under the applicable program, subject to lender guidelines. It is a fully underwritten loan, not a shortcut.

Sort Your Pay by How It Arrives

Start by asking how each dollar reaches you. Payroll pay and off-payroll pay take different paths, and mixing them up is how income gets counted twice or not at all.

Two points deserve emphasis. First, payroll deposits are documented elsewhere, so programs typically remove them from the deposit ledger. Otherwise the same dollars would count once from the pay stub and again from the statement. Second, the same sales job can land on different routes. A W-2 rep paid commission through payroll usually goes through full documentation. A rep paid commission as 1099 income is the true bank statement candidate.

Many bank statement programs were built for self-employed borrowers. A pure W-2 earner may simply not fit, and whether a mixed earner does depends on the lender’s program.

How Bank Statement Loan Income Is Calculated Step by Step

Here is what an underwriter does with your file, in order.

1. Choose the account. Business statements, personal statements, or a mix, depending on where the commission lands and what the program allows.

2. Pull the full statements. Every page of every account used. Missing pages stall a file.

3. Remove non-income deposits. Transfers between your accounts, loan proceeds, refunds and one-time deposits come out. This is standard practice across programs.

4. Apply the expense factor on business accounts. The factor is the share of gross business deposits assumed to go to operating costs. A profit-and-loss statement or an expense statement from a tax professional can support a different ratio. The lender decides whether to accept it.

5. Apply your ownership share if the income runs through an entity you only partly own.

6. Average. The lender totals the eligible figure, divides by the months reviewed, and uses that as monthly income.

7. Add the other stream. Payroll base, documented separately, is added to the deposit-based figure.

8. Compare to debts. The combined income is measured against your obligations, including the new payment.

Worked Example: Base Plus Commission

Run the numbers on an index instead of dollars. Every figure below is an illustrative model, not a program promise.

Picture a borrower with a salaried base documented by pay stubs, worth 40 points a month. Commission arrives as 1099 deposits into a business account. Over 12 months, eligible deposits total 1,440 points after transfers and refunds are removed.

• Apply a 50% expense factor (the example factor from the trade-press source above). That leaves 720 points.
• Divide by 12 months. Deposit-based income is 60 points a month.
• Add the base. Total qualifying income is 100 points a month.
• Suppose the new housing payment plus existing debts equal 40 points. The debt ratio is 40%.

Now the outlier test. Say one month held a single 360-point deposit that the lender treats as one-time and removes. Eligible deposits fall from 1,440 to 1,080. The debt ratio on the same debts climbs noticeably.

If that payout repeats every year and is documented, the lender may leave it in. The lesson is to know your lumpy months before the underwriter finds them.

Which Deposits Get Removed (and Why)

Underwriters want income that will continue. Anything that is not earned revenue comes out:

• Transfers between your own personal and business accounts.
• Loan proceeds and credit-line draws.
• Refunds and reimbursements.
• One-time windfalls, such as an asset sale.
• Large unexplained deposits, until you source them with a paper trail.

Transfers cause the most trouble for commission earners. If a payer deposits into the business account and you move part of it to a personal account, counting both double-counts the same money. Keep a short note on large deposits. It saves a round of questions.

How Underwriters Treat Variable Pay

Commission is uneven by nature, and averaging is how programs handle that. The CFPB’s ability-to-repay commentary says a creditor may reasonably average annual income across 12 months, even if some months have no income. Averaging is legitimate. An individual program can still ask for stability or a trend on top of it.

Three things drive how variable pay is judged:

• History. A documented record of the commission stream matters more than a single strong quarter.
• Continuance. Does the pay plan suggest the income will keep coming? An employer letter or pay-plan summary helps on payroll commission.
• Trend. Rising or flat commission reads well. A falling trend often gets a more conservative average, or a longer look-back.

Quarterly, deferred or annual commission fits the same logic. Averaging smooths it across the window. It also exposes it if the stream looks inconsistent. For a deeper look at this lane, see Lendmire’s guide How to Qualify on Commission Income With a Bank Statement Loan.

Personal or Business Statements for a Commission Earner?

If commission lands in a personal account, the personal route may apply. If it lands in a business account, the expense factor does. Which is better depends on the program and on how clean your accounts are.

Programs differ here, and a few lenders in the network read the same file very differently. That spread is the reason brokers shop one set of statements across several programs.

From Qualifying Income to Your Debt Ratio

Bank statement income answers one question: how much total debt can you carry? That matters for an investment purchase because the new payment joins your other obligations in the ratio. Each program sets its own debt-to-income limit. Most files are also reviewed for credit, reserves of roughly 6 months of the housing payment, and loan sizes from about $125,000 to $3,500,000, subject to lender guidelines.

Leverage depends on the property and occupancy:

• Primary residence, purchase or rate-term: up to 90% LTV through select lenders, with the strongest files earning the top of that range.
• Owner-occupied cash-out (primary residence or second home): up to 80% LTV with a fixed expense ratio, or 75% with an accountant-prepared ratio, depending on loan size and credit.
• Investment property cash-out: tops out around 75% LTV.
• Investment property purchase: varies by lender on bank statement documentation, so there is no single answer to quote.

Occupancy also decides the disclosure regime. An owner-occupied file is a consumer mortgage, so TRID disclosure rules apply. A bank statement loan on a non-owner-occupied rental, including a short-term rental, is a business-purpose loan and exempt from TRID. Short-term rental rules can vary by city, county, HOA and property type, so confirm local rules before relying on projected rental income.

One federal rule is worth knowing here. The verification requirement in 12 CFR 1026.43 calls for third-party records, and financial institution records are among the accepted types. That is why statements count. The CFPB’s commentary on the same section adds that a lender needs to verify only the income it actually relies on.

Now the alternative. A DSCR loan is reviewed primarily on property-level rental income covering the payment, subject to lender guidelines. Your base pay, commission and deposits are not part of that test. Investors with many existing mortgages sometimes find DSCR easier for that reason. Programs below 1.00 coverage are available through select lenders in the network, but LTV and terms adjust. Lendmire’s complete DSCR loans guide covers that route in full.

Key Terms Defined

Expense factor: the share of gross business deposits a lender assumes goes to operating costs before income is counted.

Eligible deposits: deposits left after transfers, refunds, loan proceeds and one-time items are removed.

Statement window: the number of months of bank statements the lender reviews and averages.

Payroll income: pay run through an employer’s payroll, usually documented with pay stubs and W-2s.

Debt ratio: monthly debts, including the new payment, divided by monthly qualifying income.

Asset depletion: an alternative that is reviewed against liquid assets instead of deposits. It runs to about 80% LTV on a primary residence. These specifics are subject to lender guidelines and a full review of property, leverage, and credit.

If the Number Comes Up Short

A short result is not always the end of the file. Several levers may help, subject to lender guidelines:

• Re-read the account choice. A different account mix can change the figure.
• Support a different expense ratio. A profit-and-loss statement or a tax professional’s expense statement may support a lower ratio, if the lender accepts it. Tax treatment can depend on how the funds are used and how the property is held, so borrowers should keep clear records and speak with a qualified tax professional before relying on any deduction.
• Add a co-borrower. A salaried partner’s wages are documented with pay stubs, and the lender does not apply an expense factor to wages.
• Lower the leverage or reduce the requested loan size.
• Switch program type. Asset depletion or DSCR may fit better than deposits.

Is This the Right Route for You?

Agency-style underwriting averages base, bonus, overtime and commission from pay stubs. That works well for steady payroll earners and poorly for heavy write-offs or 1099 pay. If your payroll pay is steady, full documentation is usually simpler. If your commission comes in outside payroll, or traditional personal-income documentation understates what you really earn, deposits may tell a truer story.

Prepare Your File

• Gather every page of every account you plan to use.
• Mark transfers and refunds before the underwriter does.
• Write a short note for any large deposit, with the payer’s name.
• Keep personal and business accounts separate where you can.
• Collect pay stubs and W-2s for any payroll base.
• Ask your tax professional whether an expense statement is realistic for your business.

Next Step

Lendmire is a broker that arranges consumer mortgages through select lenders in 16 states and does not make lending decisions itself. Call 828-256-2183 to talk through your statements before you apply.

A commission earner’s best preparation is a year of clean, labeled deposits.

About Lendmire

Lendmire is a mortgage brokerage (NMLS# 2371349) licensed for consumer mortgage lending in 16 states, arranging bank statement and other alternative-documentation mortgages — P&L-only, 1099-only and asset-based paths — through a wholesale lending network. Eligibility is determined by the lender on each file. 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. CFPB, Regulation Z § 1026.43

3. eCFR, 12 CFR 1026.43