Keep The Expense Factor From Sinking — The Quick Read: A bank statement cash-out refinance runs on deposits, not traditional personal-income documentation, but business deposits get haircut by an expense factor before they count as income. Get the wrong factor applied to your business — or bring no documentation to challenge the default — and your debt-to-income ratio can blow past the program ceiling before the appraisal even matters. The fix is knowing which factor tier your business falls into, whether a CPA letter can move you into a lower one, and how cash-out seasoning rules stack on top of that income math independently.
Key Takeaways
- Personal bank deposits generally pass through as income with no haircut. Business deposits always get reduced by an expense factor before they count.
- The expense factor isn’t a federal rule. It’s a lender-specific underwriting convention, and it varies by business type and staffing.
- A CPA or tax-preparer letter can replace the default factor with a documented one — but a lower factor doesn’t guarantee the file clears debt-to-income.
- Business type miscategorization (calling a product business a service business, for example) is one of the most common ways a file that looked approvable turns out not to be.
- Cash-out seasoning rules operate independently of the income calculation and can cap proceeds even after the expense-factor question is solved.
What Actually Sinks These Files
A bank statement cash-out doesn’t usually fail because of credit or the appraisal. It fails because the borrower’s actual monthly qualifying income comes in lower than expected once the expense factor is applied. That leaves a debt-to-income ratio that no longer supports the loan amount requested.
That single number — the expense factor — decides how much of a business’s gross bank deposits get treated as personal income for underwriting purposes. Two business owners with identical average deposits can walk away with very different qualifying incomes purely because their businesses got sorted into different factor tiers. One brings a CPA letter. The other doesn’t. One runs a service shop with no employees. The other runs a product business with a staff of eight. Same deposits. Different outcomes.
Key Terms Defined
Expense factor — the percentage of gross business bank deposits a lender assumes goes toward running the business rather than into the owner’s pocket; whatever remains after that haircut becomes qualifying income.
Bank statement loan — a non-QM mortgage product that uses 12 or 24 months of bank deposits, instead of traditional personal-income documentation, to establish a borrower’s income for underwriting purposes.
Debt-to-income ratio (DTI) — the borrower’s total monthly debt obligations divided by qualifying monthly income; most bank statement programs cap this at 50%.
Cash-out seasoning — the minimum length of time a property must be owned, or a title held, before a lender will allow a cash-out refinance at full appraised value.
Repayment-capacity (repayment-capacity) — the federal standard requiring lenders to make a reasonable, documented determination that a borrower can repay a mortgage before it’s originated.
The Setup: Why Business Deposits Aren’t Treated Like Personal Deposits
On a personal bank statement, what gets deposited generally gets counted. No haircut, no factor, no adjustment. On a business account, the math changes entirely, because a business account mixes revenue with the cost of running that business — payroll, rent, vendor payments, insurance, equipment. A big deposit hitting a business account in a given month is gross revenue, not the owner’s take-home pay.
This is why the expense factor exists. It’s an underwriting tool. It turns gross business deposits into a number that looks like real income. Lenders use this number to judge whether a borrower can afford a mortgage payment. No federal rule sets this percentage. The Consumer Financial Protection Bureau does set the governing framework. It requires lenders to make a documented, good-faith determination of repayment ability using reliable income verification (Consumer Financial Protection Bureau). But it doesn’t specify a haircut percentage. That percentage lives entirely inside each lender’s own guideline manual. That’s why shopping the same file across multiple programs can produce different qualifying income figures from the same deposits.
Across the wholesale programs Lendmire places files with, the default factor tiers generally follow a similar pattern. A service business with no employees tends to land toward the lower end of the typical range. A business with one to five employees tends to land in a middle range. A business with six or more employees — or any product-based business regardless of headcount — tends to land toward the higher end. An accountant-provided ratio can replace any of these defaults. A profit-and-loss method is available up to a higher factor on some files. None of these are universal. They’re typical ranges drawn from select wholesale guidelines, subject to full underwriting on every file.
The Mechanics, Step by Step
Step one: deposit aggregation. The lender pulls 12 or 24 consecutive months of bank statements and calculates an average monthly deposit figure. Consecutive matters here — a transaction history summary generally won’t substitute for the actual statements.
Step two: the personal-versus-business fork. Personal account deposits move forward largely untouched. Business account deposits stop at the expense-factor gate before they’re allowed to count as income at all.
Step three: business ownership verification. Most programs require at least 25% ownership in the business whose statements are being used. Transfers from that business into the borrower’s personal account still count in full — they’re not double-counted, but they’re not disqualified either.
Step four: applying the factor. The lender assigns a default factor based on business type and staffing, unless the borrower brings documentation to support a different one.
Step five: the documented-factor option. A signed CPA or tax-preparer letter, or a profit-and-loss statement, can swap in a factor different from the default — but the letter has to actually state a number. Underwriters have rejected exception requests where a CPA letter confirmed business ownership but never specified an expense ratio, defaulting the file back to the standard guideline figure.
Step six: the DTI test. The resulting monthly qualifying income feeds the debt-to-income calculation, and that ratio — capped around 50% on most bank statement programs — determines the maximum loan amount the file can support. This is the step where the expense factor stops being an abstract underwriting line and starts directly limiting how much cash-out proceeds the deal can carry.
Where This Strategy Goes Wrong
Business miscategorization is the most common failure point. A file underwritten with the wrong staffing or business-type tier can look approvable on paper and then fail once the correct factor is applied. If a borrower’s product business gets initially coded as a limited-staff service business, and the reviewer later catches the mismatch, the corrected factor can push DTI over the program ceiling — the loan doesn’t shrink, it stops.
A CPA letter helps, but it isn’t a guarantee. Documented factors can still leave a file over the maximum. A borrower can supply a CPA letter showing a lower ratio than the default and still land above the 50% ceiling once that adjusted income is run against the actual debt load. The letter changes the income input. It does not change the program’s DTI limit or the borrower’s existing obligations.
Ownership percentage alone doesn’t buy a lower factor. Owning 100% of the business doesn’t automatically justify a smaller haircut. The factor is tied to what the CPA documents, or to the default tier based on business type and staffing — not to how much of the company the borrower owns.
Cash-out seasoning is a separate gate that stacks on top of the income question. Even a file with a clean expense factor and a DTI comfortably under the ceiling can run into a proceeds cap driven entirely by how long the property or title has been held. Shorter seasoning periods can limit the value the lender will use for cash-out purposes to the lower of current appraised value or purchase price plus documented improvements, independent of anything on the income side. Solving the expense-factor problem doesn’t solve a seasoning-driven valuation cap — they’re two different gates, and both have to clear.
What This Actually Looks Like on the Ladder
The expense factor question only matters if the file is sized and structured to carry it. Loan amounts on the wholesale bank statement programs Lendmire places generally run from $300,000 up to $6,000,000 on a portfolio non-QM program, with a separate bank portfolio jumbo program carrying 12-month-statement files as high as $30,000,000 on its own ladder — roughly 65% loan-to-value to $5,000,000, 60% to $10,000,000, and 55% up to $30,000,000, with interest-only capped at 60% or the band’s ceiling, whichever is lower.
Leverage on a primary residence steps down as the loan gets bigger: 90% up to $1,000,000, 85% up to $2,000,000, 80% up to $3,000,000, and 75% at the top credit tier up to $4,000,000. Above $4,000,000, every file moves to case-by-case review before submission — never a flat percentage. Second homes and investment properties generally run about five points lower at every size band, and case-by-case review applies at the same size threshold on those occupancy types as well.
On the cash-out side specifically, most programs in this network allow unlimited proceeds at or below 60% loan-to-value, with a $1,500,000 cash-in-hand cap above 60% on the portfolio program. Credit floors sit at 660 on the portfolio program and 700 above the super-jumbo size threshold, with reserves generally running 3 months up to $500,000, 6 months up to $1,500,000, and 9 months above that — plus additional months per financed property, subject to lender guidelines and full underwriting.
Who This Fits — and Who It Doesn’t
This path tends to work best for self-employed founders, physicians, attorneys, and other high-net-worth borrowers. Their business deposits are strong, but their traditional personal-income documentation understates real income after write-offs. If the business is a clean service operation with few employees, the default factor tier is favorable. Often there’s no need to chase a CPA letter at all.
It fits less well for borrowers running staff-heavy or product-based businesses, where the default factor is going to run 50% no matter what. Those borrowers should generally plan for a CPA letter from the start, rather than discovering the gap mid-underwriting. And it doesn’t fit at all for an investor whose real qualification story is the rental property’s own income, not the borrower’s business income. That’s the point where a bank statement cash-out and a DSCR cash-out stop being the same conversation. A DSCR cash-out refinance qualifies primarily on the property’s rental income covering the payment, subject to lender guidelines. It sidesteps the expense-factor question entirely, because there’s no borrower income calculation to haircut in the first place. Investors weighing the two paths side by side can review Lendmire’s complete DSCR loans guide to see how that qualification path works before deciding which one fits their file.
For a business owner whose expense factor is genuinely working against them — a product business with a growing team, for instance — a documented CPA ratio is usually worth pursuing before applying, not after a denial. More on structuring that ahead of time is covered in Lendmire’s piece on winning a lower expense factor on a service business.
DSCR loans are designed for non-owner-occupied investment properties. Because they are business-purpose investor loans, they are reviewed differently from a standard owner-occupied mortgage.
This is not legal or tax advice. Loan program terms, expense-factor methodologies, and DTI limits vary by lender and change over time; tax treatment of cash-out proceeds depends on how the funds are used and how the property is held, so investors should keep clear records and speak with a qualified attorney or CPA about their own situation before relying on any of it.
Frequently Asked Questions
Does a CPA letter always lower my expense factor? Not automatically. A CPA or tax-preparer letter can replace the default factor with a documented ratio, but the letter has to state an actual number — a letter confirming ownership without specifying a factor gets ignored, and the default applies instead.
Can a lower expense factor still leave my file over the DTI limit? Yes. A documented factor changes the qualifying income figure, not the program’s debt-to-income ceiling or the borrower’s existing debt load. A file can improve on the income side and still land above the 50% cap most bank statement programs use.
Does owning 100% of my business get me a better factor? No, not by itself. Full ownership doesn’t automatically justify a lower haircut. The factor is set by documented CPA ratios or by the default tier tied to business type and staffing.
Is the expense factor the same thing as a DSCR rent schedule? No. The expense factor is an income-side concept used on bank statement loans. A DSCR loan skips borrower income analysis and instead uses an appraiser’s opinion of market rent — captured on Fannie Mae’s Form 1007 rent schedule for single-family properties — to judge whether the property’s cash flow covers the payment.
Why would cash-out proceeds be capped even after my expense factor is resolved? Cash-out seasoning rules operate independently of income. If the property or title hasn’t been held long enough, some programs limit the value used for cash-out purposes to the lower of current appraised value or purchase price plus documented improvements, regardless of how strong the income side looks.
If you’re weighing a bank statement cash-out against qualifying on a rental property’s own income instead, Lendmire can help compare options based on the property, the business income picture, credit profile, and leverage across its wholesale lending network.
For how equity extraction works on an investment property, see cash-out refinance on an investment property.
For the mechanics of pulling equity out of a rental property, see cash-out refinance on an investment property.
For current guidelines and terms, see Lendmire’s super jumbo bank statement loan programs page.
Self-employed borrowers can compare both super jumbo programs on Lendmire’s self-employed mortgages page.
About Lendmire
A DSCR-focused mortgage broker, Lendmire (NMLS# 2371349) places investor financing across 40 markets — 39 states plus Washington, D.C. — with DSCR eligibility generally reviewed by the lender on property cash flow instead of tax returns, subject to lender guidelines. Scotsman Guide named Lendmire a Top Mortgage Workplace in 2025 and 2026.
Lendmire’s Top Mortgage Workplace recognition is documented by Scotsman Guide 2025 Top Mortgage Workplace and Scotsman Guide 2026 Top Mortgage Workplace.
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References
1. Fannie Mae — Single-Family Comparable Rent Schedule (Form 1007)
Brandon Miller
Founder & CEO, Mortgage Loan Originator, Lendmire LLC
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Important disclosures. Lendmire (NMLS# 2371349) is a licensed mortgage brokerage. Lendmire is not a direct lender, depository institution, or financial advisor. All loan inquiries are subject to lender underwriting; this article does not constitute a commitment to lend. Rates, terms, and program guidelines are subject to change without notice and vary by borrower profile, property type, and state. Information in this article is general in nature and is not financial, legal, or tax advice. Equal Housing Opportunity. NMLS Consumer Access: nmlsconsumeraccess.org.
