How Bank Statement Loan Eligible Deposit Rules and the Income Formula Work

The Quick Read: A bank statement loan turns your eligible deposits into a monthly income figure by removing deposits that are not real earnings, applying an expense factor to business accounts, and dividing by the months reviewed. The lender sets the exact screening and the factor, so the same statements can produce different numbers at different lenders.

• Eligible deposits are payments that trace back to your work. Transfers between your own accounts, loan proceeds, and one-off credits are removed.
• Business statements take an expense factor. Personal statements are usually read closer to face value.
• Your ownership share caps how much of a business’s income counts.
• Qualifying income then runs against the proposed housing payment and your other debts.
• Programs on our network review 12 months of statements, and every file is underwritten individually.

Self-employed borrowers hear “just show your deposits” and assume it is that simple. It is not. The loan is reviewed on documented income under the applicable program, subject to lender guidelines. The documentation is different from a tax return. It is not absent.

What Counts as an Eligible Deposit?

An eligible deposit is money that arrived because of your work and can be traced to a source. Client payments, direct deposits, checks, ACH credits, and wires from customers usually count. Money that only moved around, or that you owe back, does not.

Across the wholesale network we place files with, the underwriter’s question is always the same: is this revenue, or is it something else? Here is how the common cases tend to land.

Thresholds for what triggers a request for sourcing vary by lender. Some want a letter on any deposit that is large relative to your monthly average. Others set a looser line. Treat any unusually large deposit as one you will have to explain.

The reason for all this scrubbing is verification. A lender must rely on reasonably reliable third-party records, and a borrower’s say-so is not enough, as the CFPB’s small-entity compliance guide explains. Bank statements work because the bank, not you, produced them. For a closer look at platform payouts specifically, see Lendmire’s piece How Bank Statement Deposit Rules Work for Platform-Payout Self-Employment Income.

The Income Formula, Step by Step

The order of operations matters, because screening comes before everything else. Most files follow this sequence.

1. Pick the account type. Business or personal statements, based on where your earnings land.

2. Collect consecutive statements. Programs on our network review 12 months. Some lenders in the wider market look at up to 24.

3. Scrub the deposits. Remove transfers, loan proceeds, one-time credits, reversals, and anything unsourced.

4. Total what remains. These are your eligible deposits.

5. Apply the expense factor (business accounts). Multiply eligible deposits by one minus the factor.

6. Adjust for ownership. Credit only your share of the business.

7. Divide by the months reviewed. The result is monthly qualifying income.

8. Compare to the debts. Qualifying income is measured against the proposed housing payment and your other monthly obligations.

In one line: eligible deposits × (1 − expense factor) × ownership share ÷ months = qualifying income.

A simple illustration with relative numbers shows the effect. Say eligible business deposits total 100 units over the review window. A 50% factor leaves 50 units of income. A documented 30% factor leaves 70. Same business, same statements, a 40% difference in the result. That is why the factor matters more than most borrowers expect.

Personal vs. Business Statements

Personal statements are usually the simpler read. Business statements carry the expense factor, because business deposits are revenue and revenue is not take-home pay.

Here is where the market disagrees, and it is worth being plain about it. Some programs apply no haircut to personal statements. Others apply a lighter one. A few lenders in our network will let you choose the more favorable method if your deposits support both. Confirm which treatment a specific program uses before you plan around it.

Personal statements are not automatically better. They help only when the deposits trace to your work and your real costs are low. If personal and business money are mixed, the underwriter may credit less income and ask for more explanation letters.

How the Expense Factor Works

The expense factor is the share of business deposits the lender assumes goes to running the business. It exists because gross deposits overstate what you actually take home.

You do not pick the factor. The lender sets it, and it can depend on the type of business, the number of employees, and the documentation you provide. Trade press describes 50% as an example of a standard factor, and that is an illustration, not a rule. Scotsman Guide also notes that a profit-and-loss statement or an expense statement from a third-party tax professional can be used to support a different factor.

On owner-occupied cash-out files in our network, the structure is specific. The program uses a fixed expense ratio, with an alternative when an accountant prepares the figures, up to 80% LTV on a cash-out of a primary residence or second home. Other programs follow their own sheets. These specifics are subject to lender guidelines and a full review of property, leverage, and credit.

A lower factor takes preparation. You need the accountant’s letter or P&L in hand before you apply. A business with deep losses will find a low-factor letter hard to get. And a high-overhead business should expect a high factor, because the documentation will say so.

Ownership Share and Commingled Accounts

If you co-own a business, you are credited with only your share of its income. Own 60% and the lender counts 60% of the eligible, factor-adjusted income. Lenders often set a minimum ownership percentage for business statements, and it varies by program.

Commingled accounts are the common stumbling block. When rent, groceries, client payments, and transfers all hit one account, deposits become hard to attribute. The usual outcome is lower credited income and more letters. Separate accounts, kept for months before you apply, make the cleanest files.

One edge case is transfers from a business account to your personal account. Some programs count them in full because they are already your take-home pay. Others require business statements to prove the transfers trace to revenue. Treatment differs by program, so ask before you assume.

One Worked Example, With a Sensitivity Check

Use relative figures to see how each step moves the answer. Assume a sole owner with 12 months of business statements, and total deposits of 100 units.

• Raw deposits: 100.
• Remove transfers between own accounts and a loan draw: 100 becomes 88.
• Apply a 50% expense factor: 88 becomes 44.
• Ownership at 100%: stays 44.
• Divide by 12 months: monthly qualifying income is 44 ÷ 12, or about 3.7 units.

Now change one input. Keep the same statements, but the borrower brings a CPA letter supporting a 30% factor. Eligible deposits of 88 become about 61.6. Monthly income rises to about 5.1 units. That is roughly 40% more qualifying income from documentation alone.

Last step: income meets debt. Qualifying income is compared against the proposed housing payment and your other monthly debts. Some non-QM lenders will go up to 50% debt-to-income, versus about 43% commonly seen in agency-style lending, per Scotsman Guide. Your actual limit is set by the program and your profile.

Seasonal Income and What Underwriters Look For Beyond the Math

Averaging smooths seasonal swings, and it can hide them. A landscaper who earns most of the year’s income in six months still gets a 12-month average. But the underwriter reads the trend as well as the total.

Underwriters look at:

• How cleanly deposits trace to the work
• Whether the trend is steady, rising, or declining
• Whether one or two large deposits drive the average
• Whether the account is separate from personal spending

A single down year reads differently from a multi-year decline. Falling deposits are a red flag, and a lender may reduce credited income or decline the file.

Which Leverage Applies, and Which Rules Follow the Property

Leverage depends on what you are buying. On a primary residence purchase or rate-and-term refinance, select lenders in our network go up to 90% LTV, and stronger files earn the top of that range. An asset-depletion alternative, which is reviewed against liquid assets, runs to about 80% LTV on a primary residence. On an owner-occupied cash-out of a primary residence or second home, the ceiling is 80% LTV. On an investment property cash-out, it tops out around 75% LTV. Loan sizes run roughly $125,000 to $3,500,000, with reserves commonly around six months of the housing payment. Investment purchase leverage on bank statement documentation varies by lender.

Occupancy also decides the disclosure regime. An owner-occupied file is a consumer mortgage, and consumer disclosure rules such as TRID 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 vary by city, county, HOA, and property type, so investors should confirm local rules before relying on projected rental income.

One wrinkle: not every “investment” property is automatically business-purpose. Under the CFPB’s exempt-transactions rule, credit for a rental the borrower occupies, or will occupy within a year, is treated as business-purpose only if the property has more than two units. If you plan to live in one side of a duplex, plan for the consumer regime.

Does Another Path Fit Better?

If you are buying a rental and only the property needs to carry the debt, a DSCR loan may suit you better. It qualifies primarily on property-level rental income covering the payment, subject to lender guidelines. Your personal deposits are not the center of the file. Select lenders in the network offer programs below 1.00 coverage, with leverage and terms adjusting accordingly. Lendmire’s complete DSCR loans guide walks through how that works.

Bank statement loans fit best when you are self-employed, your traditional personal-income documentation understates your cash flow, and the property is a home you will live in. For a side-by-side look at the income formula across window lengths, see Lendmire’s piece on the bank statement loan income formula for 12 versus 24 months of deposits.

Prepare Your Statements Before You Apply

Clean files come from months of habits, not a last-minute scramble.

• Keep business and personal accounts separate.
• Label or note large deposits as they happen.
• Hold down payment funds and reserves in your own name.
• Request a P&L or expense letter from your accountant early.
• Run your own estimate with the formula above, and pick the account type that gives the stronger honest result.

Common Mistakes

• Double-counting transfers. Moving money between your accounts is not income.
• Mistaking revenue for income. Gross business deposits are not take-home pay.
• Assuming 50% everywhere. Factors differ by lender and program.
• Assuming every deposit counts. Unsourced and one-off deposits are removed.
• Thinking this is “no documentation.” It is alternative documentation. The bank statements are your proof.

Key Terms Defined

Eligible deposit: a deposit the lender accepts as income because it traces to your work.

Expense factor: the share of business deposits the lender assumes goes to operating costs.

Qualifying income: the monthly income figure the lender uses after screening, factor, and ownership adjustments.

Commingled account: one account that mixes personal and business money.

Debt-to-income (DTI): monthly debts divided by monthly qualifying income.

Non-QM: a loan that qualifies through alternative documentation instead of standard tax-return rules.

Asset depletion: qualifying from liquid assets rather than deposits or traditional personal-income documentation.

Lendmire is a mortgage broker that arranges financing through select lenders in its wholesale network. Consumer mortgage licensing covers 16 states. This is not a commitment to lend.

Tax treatment varies; consult a qualified professional.

About Lendmire

Lendmire (NMLS# 2371349) is a mortgage broker that arranges bank statement and alternative-documentation loans through select wholesale lenders. Files qualify on documented income under the applicable program, subject to lender guidelines. Scotsman Guide named Lendmire a Top Mortgage Workplace in both 2025 and 2026.

References

1. CFPB ATR/QM Small Entity Compliance Guide

2. Scotsman Guide, Rev Up the Engine for Non-QM Lending

3. CFPB, 12 CFR 1026.3 Exempt transactions