How Expense Factor Rules Work for an S-Corp or LLC Owner on Bank Statements

The Quick Read: An expense factor is the percentage of business deposits a lender treats as operating cost, so only the remainder counts as qualifying income. The program sets it, or an accountant-prepared ratio replaces it, and the borrower cannot simply pick a number. Personal-account deposits usually count without a factor, while business-account deposits take the haircut, then the owner’s documented ownership share applies. Whether the entity is an S-corp or an LLC changes the ownership proof more than the math.

• Business statements take an expense factor. Personal statements usually do not.
• Transfers, loan proceeds, refunds and one-off windfalls come out before any averaging.
• Ownership share is applied to the result, and it must be documented.
• An accountant-prepared ratio can lower the factor on some programs, but it can also backfire.
• Every lender sets its own method, so the same deposits can produce different income across programs.

Most owners who bring bank statements to a lender have the same question: “My business deposits look strong, so why is qualifying income so much lower?” The answer is the expense factor. This article walks through how it works, how the deposits get scrubbed first, how S-corp and LLC structures change the proof, and where the rule breaks down. Everything here concerns bank-statement files, which Lendmire arranges through select lenders in its wholesale network. Review details are subject to lender guidelines and not a commitment to lend.

Key Terms Defined

Expense factor: The percentage of eligible business deposits a lender treats as overhead, so it is removed before income is counted.

Qualifying income: The monthly figure left after deposits are scrubbed, averaged, reduced by the factor and prorated for ownership.

Ownership share: The owner’s documented percentage of the entity, used to credit only that portion of cash flow.

K-1: The tax form that reports a pass-through owner’s share of entity income. Lenders sometimes use it to prove ownership.

Distribution vs. salary: A salary is payroll paid to an owner-employee. A distribution is a payout of profit. Both leave the business account as outflows.

Accountant-prepared ratio: A letter from a credentialed preparer, such as a CPA, certifying a lower expense ratio than the program default.

What Is an Expense Factor and Why Do Business Deposits Need One?

Gross business deposits are not income. They land in the account before payroll, rent, supplies, software, insurance and every other cost of running the company. If a lender counted every dollar of deposits, a business with thin margins would look as profitable as one with fat margins.

The expense factor fixes that. It estimates overhead as a flat percentage and removes it. What is left stands in for the money the owner can actually take home.

Think of it as a stand-in for a profit-and-loss statement. Traditional personal-income documentation shows what the business reported. Bank statements show cash that moved. The factor bridges the two without a full accounting review.

No regulator publishes a standard percentage. The federal repayment-capacity framework asks a creditor to consider income or assets, and the federal consumer-finance regulator’s Small Entity Compliance Guide confirms that income does not have to be full-time or salaried and that self-employment can be considered. The regulator’s earlier edition of that guide adds that the rule does not dictate particular underwriting models. So the factor is a lender or investor guideline. It is not a law.

How the Calculation Works, Step by Step

The sequence is the same across most bank-statement programs, even when the numbers differ.

1. Pick the account type. Business statements get an expense factor. Personal statements usually count deposits with no factor, though a reviewer may still ask for business support.

2. Scrub the deposits. Transfers between the owner’s own accounts, owner contributions, loan proceeds, refunds and one-time credits come out. Large spikes need support, such as an invoice or contract.

3. Average over the statement period. Across the wholesale network, 12 months of statements is the standard documentation. The deposit total is divided by the number of months.

4. Apply the expense factor. The average is reduced by the factor. Some programs use a fixed ratio. Others accept an accountant-prepared ratio or a profit-and-loss method.

5. Apply the ownership share. The owner is credited with their documented percentage of the entity’s cash flow.

6. Compare to obligations. The resulting monthly income is weighed against the borrower’s debts and the proposed housing payment.

The formula in words: eligible deposits, divided by months, times what is left after the factor, times the ownership share.

Here is a unit-based example, not a market figure. Say scrubbed business deposits average 100 units a month. A 50% factor leaves 50 units. A 60% owner is credited 30 units of qualifying income. A 100% owner keeps all 50.

Order matters less than completeness. Skip the ownership step and a partial owner is overcredited. Skip the scrub and everyone is overcredited.

What Gets Removed Before the Factor Applies

Reviewers go line by line through the statements. The factor only touches what survives.

The cleanest files make this easy. Transfers are labeled. Large deposits trace to an invoice. Credit-card payouts and payment-platform deposits are consistent from month to month.

A messy file does not fail automatically. It just forces more questions, and every unexplained deposit risks being excluded.

How It Plays Out by Entity Type

The program reads the account, not the tax election. So the arithmetic is the same whether the owner holds an S-corp or an LLC. What changes is the ownership proof and what the statements show.

Ownership is usually proven with documents, not just stated on the application. Minimum ownership stakes vary by program. A minority owner below a program’s minimum can lose access to business statements entirely. Tax-election differences between these entities are a tax question, and a qualified professional is the right person to answer them.

Salary and Distributions: The Double-Counting Trap

S-corp and S-elected LLC owners often see payroll and distributions leaving the business account. Some borrowers assume those payouts should be added to income on top of revenue. They should not.

Deposits are the top of the funnel. Payroll to the owner, distributions to the owner, supplier payments and rent all come out of the same deposits. The factor already estimates the cost side. Adding owner pay back on top counts the same money twice.

Picture an owner whose business account takes in 100 units a month. Eighty units leave as payroll, supplies and rent. Twenty units go to the owner as distributions. The lender does not add 20 units to the 100. The deposits are the income base, and the factor and ownership share do the rest.

The reverse matters too. Owner pay landing in a personal account can be a clean route when the personal statements show it consistently. Reviewers may still compare that pay pattern with the business’s cash flow, and some programs reconcile owner pay against an expense method.

Business vs. Personal Statements: Which Account Gets Read?

Choosing the account is often the biggest lever. Heavy overhead tends to favor personal statements, because the owner draws a modest amount and the factor never applies. High-margin businesses tend to favor business statements, because deposits are large and even a haircut leaves strong income.

Consider the same owner both ways, in units. Business deposits average 100 a month and a 50% factor leaves 50. Pay into the personal account averages 40. Here the business route wins. Flip it: a restaurant-type business with 100 in deposits and a heavier overhead factor might leave less than the 40 that hit the personal account, so personal wins.

Personal statements are not automatically better. They avoid the factor only when the account is clean and the owner is truly paid into it. If personal funds cover business costs, a lender may treat the account as a business account and apply the factor anyway.

For the document-by-document comparison, see Lendmire’s piece Business vs Personal Bank Statements for an S-Corp or LLC Owner.

Who Sets the Factor, and When an Accountant’s Letter Changes It

The program sets it. The borrower does not choose. Across the wholesale network, most programs start with a fixed expense ratio for business statements, often tiered by business type, and a few allow a preparer-certified ratio instead.

Where a certified ratio is allowed, the letter generally has to come from a credentialed preparer, such as a CPA, enrolled agent or licensed preparer. It usually states the period covered, the ratio, and that the preparer filed the latest return. Floors differ by program, so a preparer cannot certify an arbitrarily low number.

A letter helps most when the business has low overhead, such as a consulting or service firm. A lower ratio can raise qualifying income meaningfully.

A letter does not help when real costs sit at or above the default. The preparer must certify what the books show. If the true ratio is higher than the default, the letter lands higher, and the borrower is worse off than leaving the default alone. Ask the preparer for an informal read first, before ordering a signed letter.

On the owner-occupied cash-out side, the network’s fixed expense ratio file reaches up to 80% LTV, and an accountant-prepared ratio file reaches up to 75% LTV, by loan size and credit. For primary-residence purchase and rate-term, leverage can reach up to 90% LTV on stronger files. Those are owner-occupied figures. A bank-statement loan on an investment property is a different file: cash-out tops out around 75% LTV, and investment purchase leverage varies by lender.

Getting Your Statements File-Ready

Most fixes are cheap if made before applying.

• Separate the accounts. Pay business costs from the business account only.
• Label transfers. A memo line showing “transfer to savings” saves a reviewer a question.
• Explain large deposits. Keep the invoice, contract or payout record for any spike.
• Show a consistent owner-pay pattern. If you pay yourself into a personal account, pay on a schedule.
• Gather ownership proof. Operating agreement, K-1 or preparer letter, matched to the entity.
• Watch the trend. Declining deposits are a common red flag for reviewers, so a short written explanation of your own trend should go in before the file does.
• Line up reserves. Reserves commonly run around 6 months of the housing payment, subject to lender guidelines.

Loan amounts across the network run from roughly $125,000 to $3,500,000.

Where the Rule Breaks

The general rule is that business deposits take a factor and personal deposits do not. Several cases bend it.

Commingled accounts. A personal account that pays business costs may be treated as a business account.

Heavy-overhead industries. Some programs apply a higher default to restaurants and similar businesses.

Profit-and-loss methods. On select programs, a CPA-prepared P&L replaces the deposit calculation.

Minority owners. Ownership below a program’s minimum can rule out business statements.

Lender variability. The same deposits can produce different income under different programs. This is why comparing several lenders matters. Lendmire sees many lenders’ guidelines through its wholesale network, and the strictest overlays differ noticeably from the more flexible ones.

Occupancy. An owner-occupied file is a consumer mortgage. A bank-statement loan on a non-owner-occupied rental, including a short-term rental, is business-purpose. 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.

Bank-statement loans test the borrower’s deposits. DSCR loans test the property’s rent. For a rental, DSCR is often the natural first look, and bank statements can be the fallback when property coverage is thin but deposits are strong. Lendmire’s complete DSCR loans guide covers that comparison.

Alt-doc terms follow individual lender program sheets, so term length varies by lender.

For a tax-versus-statements comparison, Lendmire’s article Tax Returns vs Bank Statements for an S-Corp or LLC Owner goes further.

Tax treatment varies; consult a qualified professional. This article is not legal or tax advice, and readers should consult an attorney or CPA about their own situation.

For current guidelines and terms, see Lendmire’s bank statement loan programs page.

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. CFPB ATR/QM Small Entity Compliance Guide

2. CFPB ATR/QM Small Entity Compliance Guide, earlier edition