How Bank Statement Loan Expense Factors Work for High-Overhead Industries

The Quick Read: An expense factor is the share of business-account deposits a lender treats as operating cost, so only the remainder counts as the owner’s qualifying income. For high-overhead businesses it is an estimate of real costs, not a discount, and it can run at or below what the business actually spends.

• The factor is a lender and program convention, not a fixed rule. It varies by program.
• Personal-statement files are often counted at or near full deposits. Business-statement files take the factor.
• A third-party prepared ratio can replace the default, but only if the lender accepts it and only if the real ratio is lower.
• Contractors, restaurants, trucking and similar operators often have real costs at or above the default, so a letter may not help.
• Owner-occupied files carry up to 90% LTV on a purchase or rate-term refinance of a primary residence, subject to lender guidelines.

What Is an Expense Factor?

An expense factor is a percentage taken off eligible business deposits before income is counted. If a lender applies a 50% factor, half the deposits are treated as costs, and the other half is the owner’s income. Scotsman Guide’s overview of non-QM lending describes the standard setup: a self-employed borrower with no W-2 provides 12 to 24 months of personal or business statements, and the lender calculates income using a standard expense factor, with 50% given as the example. That piece is older, so treat 50% as an illustration, not a benchmark.

Across Lendmire’s wholesale network, the factor is set by the lender, not the borrower. Programs differ on the default, on whether it moves with business type, and on how far a documented ratio can lower it. Nothing here is a universal formula, and every file is underwritten individually. Qualification runs on documented income under the applicable program, subject to lender guidelines.

The formula is simple:

Qualifying income = (eligible deposits ÷ months reviewed) × (1 − expense factor), adjusted for ownership share.

How Does Underwriting Turn Deposits Into Income?

Underwriting follows the same path on most files. Each step is a place a high-overhead file can slip.

1. Pick the statement type and window. Programs in the network typically work from 12 months of business or personal statements. Some lenders offer a 24-month window, which helps when revenue trends or swings.

2. Screen the deposits. Transfers between the borrower’s own accounts, refunds, loan proceeds and peer-to-peer payments are pulled out. Large one-time spikes need an invoice or contract behind them.

3. Average what is left. Eligible deposits are totaled and divided by the months reviewed.

4. Apply the expense factor to business-account deposits.

5. Apply ownership share. A 100% owner counts all of it. A partner counts only their share, so two borrowers with identical deposits can qualify very differently.

6. Run the result through the program’s other tests, including debt-to-income, credit, reserves and leverage.

Deposit screening has a practical purpose. Lenders must be able to show the funds counted are the borrower’s own income. The CFPB’s Ability-to-Repay compliance guide says a creditor relying on account inflows has to confirm those funds are the consumer’s income, and that it generally cannot rely on what a consumer says about income. That is why a clean statement beats a thick one.

Why Do High-Overhead Industries Feel the Factor Most?

Because their real costs are large and visible in the account. Payroll, subcontractors, materials, fuel, equipment, inventory, rent and merchant fees all leave the account. A flat factor is a blunt tool, so it can misstate income for a lean consultant and a heavy-cost operator alike.

Here is the point that most borrowers miss. For these businesses, a default factor may be accurate, or even generous. The factor is not a discount handed to everyone. It is the lender’s estimate of overhead. A borrower whose real costs sit above the default gains nothing from arguing for a lower number, because the true ratio does not support one.

How Do Lenders Set the Factor?

Lenders in the network typically start from a default and adjust from there. The usual inputs are account type, business type, headcount, contractor use and entity structure. A service business with no employees tends to be viewed differently from a business carrying payroll and inventory. Exact tiers vary by program, so describe them as a range of lender approaches, not a table of promises.

A few paths exist, and which one a lender allows depends on the program:

• Default factor. Fast to apply and needs no extra paperwork.
• Third-party prepared ratio. A CPA, enrolled agent or licensed tax preparer documents the actual expense ratio. The Scotsman Guide overview notes that a profit-and-loss statement or an expense statement from a third-party tax professional can stand in for the flat factor. The lender decides whether to accept it and may set a floor.
• Personal statements. Personal-account deposits are often counted at or near 100%, but the lender may ask for proof the business is operating and that expenses are paid elsewhere. Commingled accounts can bring a factor back.

Third-party documentation matters for a reason beyond lender preference. The CFPB guide defines third-party records as records prepared by someone other than the consumer, the creditor or the mortgage broker. A self-prepared profit-and-loss statement does not meet that test.

Worked Examples: Three High-Overhead Profiles

These use ratios, not dollars. Assume a lender default near the midpoint of what many programs use, and treat the figures as modeled assumptions, not market data.

The takeaway is the direction, not the number. The lower the real overhead, the more a documented ratio helps. The higher it is, the more the default protects the borrower, and the more the file should lean on other strengths: credit, reserves, leverage and a clean statement history.

Should You Get an Accountant Ratio?

It depends on one question: is the real expense ratio below the lender’s default? Run it before paying anyone.

A letter can hurt. If the certified figure lands above the default, the lender may use the higher one. Ask the lender how a documented ratio is treated before requesting it.

What If the Letter Won’t Help?

There are real alternatives, and they are structural, not cosmetic.

• Increase deposits that are clean. Route business receipts through the business account and keep personal transfers out of it.
• Use a longer window where the program allows, if the trend supports it.
• Lower the leverage. More cash down gives a lender room on a thinner income number. Leverage depends on lender, credit and loan size.
• Consider the asset-depletion alternative. Qualifying from liquid assets can run up to about 80% LTV on a primary residence, subject to lender guidelines.
• Look at the property’s rent if it is an investment. An investor whose operating business carries heavy overhead can avoid the expense-factor haircut by qualifying the property on its own rent through a DSCR loan. Lendmire’s complete DSCR loans guide covers how that file works, and a bank statement file may still fit when the rent alone does not cover the payment but the borrower’s business income is strong.

Occupancy decides the paperwork. An owner-occupied file, meaning a primary residence or second home, is a consumer mortgage and TRID applies. A bank statement loan on a non-owner-occupied rental, including a short-term rental, is business-purpose and exempt from TRID. Keep the two straight. 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.

How Does the Factor Affect Loan Size and DTI?

It matters more as balances rise. Qualifying income sets the ceiling on the monthly obligation, so a heavier factor bites sooner on a large loan. Loan sizes in the network run from roughly $125,000 to $3,500,000, and reserves are commonly around six months of the housing payment. On a larger file, a few points of expense factor can decide whether the debt-to-income math clears.

Leverage by transaction, on typical network guidelines and subject to lender review:

Investment purchase leverage on bank statement documentation varies by lender, so it is not stated here. Stronger files earn the top of each range.

Deposit Quality in Cost-Heavy Businesses

Cost-heavy operations create specific deposit problems. Card-processor and platform payouts can arrive net of fees, which can double-count costs when the factor is applied on top. Pass-through deposits, customer funds held for a job and sub reimbursements inflate the total and get screened out. Cash deposits need a paper trail. Seasonal swings show up hard, which is where a 24-month view can steady the average.

Commingling is the quiet one. When personal and business spending run through one account, a lender may treat it as a business account and apply the factor. Separate accounts before the statement window opens, not during it.

Documentation tied to the file also matters because traditional personal-income documentation tends to show lower income for these owners. Payroll, contractor costs, equipment and depreciation all reduce taxable income. That is why alternative documentation exists. It does not mean lighter underwriting. Non-QM lenders still have to confirm the borrower can repay.

Pre-Application Checklist

• Pull 12 months of statements, or 24 if the program offers it and the trend helps.
• Total eligible deposits and strip transfers, refunds and loan proceeds.
• Document any large deposit with an invoice or contract.
• Confirm ownership percentage and entity structure.
• Ask the lender how a documented ratio is treated before ordering one.
• Do not close accounts or move money between them during the window.
• Check reserves against the roughly six-month benchmark.

Common mistakes: assuming one factor fits every business, requesting a letter without knowing the real ratio, and mixing personal spending into the business account.

Key Terms Defined

Expense factor: The percentage of business deposits a lender treats as operating cost before counting income.

Eligible deposits: Deposits left after transfers, refunds, loan proceeds and similar items are removed.

Third-party prepared ratio: An expense ratio documented by a CPA, enrolled agent or licensed tax preparer instead of the default.

Commingling: Running personal and business money through the same account.

Ownership share: The borrower’s percentage of the business, used to prorate business income.

Next Step

Consumer mortgage licensing for this lane covers 16 states, and any outcome stays subject to lender guidelines and credit approval. An illustrative calculator on the site can help frame the math, but it is an estimate only.

Overhead-heavy owners tend to do best when they stop fighting the factor and start documenting everything around it.

About Lendmire

As a mortgage broker (NMLS# 2371349), Lendmire helps self-employed and high-net-worth borrowers in 16 states qualify on bank statements, a profit-and-loss statement, 1099s or liquid assets instead of tax returns, through wholesale lenders. Lendmire is never the lender; program terms are set by the lender and its guidelines. 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 – ATR/QM Small Entity Compliance Guide