How to Know Which Expense Ratio Applies to a Bank Statement HELOC

The Quick Read: The expense ratio on a bank statement HELOC is set by the lender’s program, not chosen by the borrower, and the one that applies depends on whether the statements are personal or business, what the program’s default is, and whether a qualified tax professional documents a different figure the lender accepts. This is the lending meaning of the term, not the fund fee of the same name. The ratio is the share of your deposits treated as business costs before the rest counts as income.

• Business statements usually get the factor applied. Personal statements often do not, though programs differ.
• A flat default applies when nothing else is documented.
• A CPA, enrolled agent, or qualified tax preparer can document a lower figure, and the lender decides whether to accept it.
• The factor is applied before your debt-to-income ratio is calculated, so it moves line size.
• An investment-property HELOC line caps at 70% combined loan-to-value, so the factor is only one of several gates.

Key Terms Defined

Expense ratio (expense factor): the percentage of eligible deposits a lender treats as business costs rather than income.

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

Qualifying income: the monthly figure the lender uses after the factor and any ownership share are applied.

Certified expense letter: a signed statement from a CPA, enrolled agent, or qualified tax preparer documenting your actual expense level.

Debt-to-income ratio (DTI): your monthly debts, including the proposed line payment, divided by qualifying income.

Combined loan-to-value (CLTV): all liens on the property, including the new line, divided by the property value.

How Does the Ratio Turn Deposits Into Income?

Underwriters take gross deposits, remove what is not earned revenue, apply the factor, and average the result over the statement window. The formula is simple: eligible deposits, divided by months, times one minus the factor, equals monthly qualifying income.

Here is the sequence across most programs in Lendmire’s wholesale network:

1. Choose the statement type and window. The options are personal statements, business statements, or both. The window is typically 12 or 24 months, and the program sets which it accepts. The choice between 12 and 24 months of statements changes how well a bank statement HELOC fits.

2. Screen the deposits. Transfers between your own accounts, loan proceeds, refunds, and one-time items come out. Only recurring earned revenue stays.

3. Apply the factor. This is the step this article is about, and the next section walks through it.

4. Apply ownership share. A 60% owner gets credit for 60% of eligible deposits.

5. Average over the window. Seasonal businesses feel this step most, because a strong quarter and a weak quarter get blended.

6. Test DTI. Qualifying income is tested against existing debts plus the proposed line, and the line payment is qualified on the interest-only payment calculated on the maximum draw.

Run it on an index. Say eligible deposits average 100 units a month. A 50% factor leaves 50 units of qualifying income. A 35% factor leaves 65. Same statements, 30% more counted income.

Which Ratio Applies to You?

Three things decide it: the account type, the documentation you can provide, and your business profile. The program sets the factor and the borrower never self-declares it.

Across the programs we place files with, treatment generally falls into the pattern below. Treat it as a map to confirm with your loan officer, because programs differ on exactly where each line falls.

The default is often a flat figure, and 50% is the one most commonly used to illustrate it. Some programs instead tier the factor by business type, headcount, or whether the business sells physical product. A solo consultant with no staff and no inventory has a plausible case for a lower factor. A business with employees, inventory, and overhead has a weaker one.

Where does that leave you? Work through these questions in order:

• Are the deposits in a business account? If yes, expect a factor. If they are personal, ask whether the program applies one at all.
• Do you have a professional who has reviewed your records? If not, assume the default.
• Does your business profile support a lower figure? Thin staffing and low overhead help. Heavy payroll and cost of goods do not.
• Are your statements clean? Commingled accounts invite a conservative reading.

Programs treat personal statements differently. Some count most personal deposits with little adjustment. Others look through to the underlying business and apply a factor anyway. Confirm it before you assume the haircut disappears. Lendmire’s piece Personal vs Business Statements: Which Bank Statement HELOC Lender Fits? goes deeper on that split.

What Does a Before-and-After Example Look Like?

Take the same 24 months of statements under two documentation paths. Deposits average 100 index units a month after non-income items are removed. The borrower owns 100% of the business.

That extra income lowers DTI on the same line payment. On a 50% DTI ceiling, it can be the difference between a full draw and a smaller line. The network ceiling is 50%, and a ratio above 45% needs a credit profile of 680 or better. Borrowers between 600 and 679 are held to 45%.

The 30% lift is arithmetic, not a promise. Whether a lender accepts the lower figure is its call.

How Do You Get a Lower Ratio Accepted?

Lenders accept a lower ratio when a licensed third party signs it and the statements back it up. A borrower cannot self-certify one. Non-QM lenders must be able to rely on third-party records specific to the consumer, a principle summarized in CFS Review’s overview of how the ability-to-repay rule treats non-QM loans.

Gather this before you apply:

• Every page of the statement window.
• Proof of ownership and time in business.
• A letter from a CPA, enrolled agent, or qualified tax preparer stating the expense percentage and that they reviewed your records.
• A P&L, if the program uses one as support.
• Separate statements to show reserves, if the program requires them.

Underwriters then cross-check the letter against activity. If the letter says 30% and your statements show large payroll runs, vendor payments, and inventory purchases, the figure will not hold. A weak letter is usually short, undated, unsigned by a licensed professional, or inconsistent with the deposits it covers.

Ask your preparer before you apply, not after. Learning about a default-factor surprise late in the file is the most avoidable mistake here.

What the Ratio Does and Doesn’t Change on a HELOC

The ratio changes qualifying income and therefore DTI. It does not change the collateral rules, the leverage caps, or the credit floor. Those sit on a separate track, and a strong income file does not override them.

Leverage depends on occupancy, and the network ceilings differ sharply:

• Investment property: 70% CLTV maximum, a 700 minimum credit score, and a $500,000 maximum line.
• Primary residence: the ceiling reaches 90% CLTV, but only at a 720 or better credit profile and up to $500,000.
• Second home: the ceiling also reaches 90% CLTV at 720 or better, up to $500,000.

Lines at or below $500,000 ordinarily use an automated valuation. Lines above that, available only on primary residences, require a full appraisal.

Title matters too, especially for investors. The line must be held by an individual borrower or a revocable living trust. LLCs and corporations cannot hold title on these lines. A property already deeded to an LLC needs a vesting change or a different structure. HELOC availability is limited to Lendmire’s 16 full-service states, which is narrower than its DSCR footprint.

Avoid double-counting costs. Once the factor has been applied, the business costs are already out of the income figure. Do not subtract the same business-paid expenses again as personal debts.

Is a HELOC Held to the Same Income Rules as a Mortgage?

No. Open-end home equity lines are excluded from the federal ability-to-repay rule, though a loan cannot be structured as open-end credit just to evade it. The CFPB’s small entity compliance guide lists bank statements among acceptable verification records and covers both points, and HELN News’ legal opinion piece on home equity regulation reaches the same reading.

The practical result is that no regulation hands you an expense percentage. The factor is a program overlay. That does not mean a HELOC is lightly underwritten. Income, DTI, credit, and collateral are all reviewed, subject to lender guidelines and full file review.

When Is the Default the Better Path?

The default wins when a certified ratio would not actually be lower. That happens with thin margins, with a loss on the tax return, or with a business that carries real payroll and inventory. If your preparer’s honest number is near or above the default, a letter costs money and may change nothing.

The default also suits borrowers who want the lightest paperwork and have room in DTI. The certified path suits borrowers who run lean and need the extra income to reach the line size they want. This is the flip point: pay for the letter only if the expected lift moves DTI enough to matter.

When Does DSCR Make More Sense Than a HELOC?

If the goal is buying or refinancing a rental, a DSCR loan skips the expense-factor question entirely. It qualifies primarily on property-level rental income covering the payment, subject to lender guidelines, so no deposit haircut applies. Most standard programs in the network start around 1.00 coverage, and a separate select-lender path takes coverage below 1.00 with leverage and terms adjusted.

Clearing 1.00 is not the same as positive cash flow. Coverage compares rent to the full monthly obligation only. Repairs, vacancy, management, and utilities sit outside it.

Self-employed investors often end up using both tools, a HELOC to draw on equity and DSCR for acquisitions. Lendmire’s complete DSCR loans guide explains how that side works. Tax treatment can depend on how the funds are used and how the property is held, so keep clear records and speak with a qualified tax professional before relying on any deduction.

If you are considering a home equity line and want to see how the numbers work, Lendmire can help you compare HELOC options based on the property, the equity available, credit profile, combined leverage, and your goals. Whatever the program’s factor turns out to be, the investors who document early tend to arrive at the application with fewer surprises.

About Lendmire

Lendmire, NMLS# 2371349, is a mortgage brokerage that arranges home equity lines of credit through wholesale lending partners in its 16 full-service states. Lines on primary residences, second homes and investment properties are each reviewed individually by the lender under the program’s occupancy, credit and combined-loan-to-value guidelines. Scotsman Guide named Lendmire a Top Mortgage Workplace in both 2025 and 2026.

References

1. CFS Review – CFPB addresses non-QMs under the ability-to-repay rule

2. CFPB ATR/QM Small Entity Compliance Guide

3. HELN News – Home equity regulatory factors