Expense Factor Change On A Super Jumbo — The Quick Read: No, the expense factor formula itself doesn’t move because a loan crosses into super jumbo territory. It’s still set by the borrower’s business type, staffing, and CPA support, not by loan size. What does change at higher balances is the scrutiny that ratio gets before anyone signs off on it, and the fact that files above certain sizes get reviewed one at a time instead of run through a fixed tier.
Self-employed borrowers refinancing a large-balance property often assume that a bigger loan means a different expense-factor rule. It doesn’t work that way. The expense factor is a business-classification tool, not a loan-size dial. A service business with no employees can land in the same starting tier regardless of whether the loan amount sits at the lower or upper end of the balance spectrum. What changes at the top of the market is how closely that ratio gets checked, and how much room an underwriter has to move away from the default tier when the file justifies it.
What Is the Expense Factor, and Why Does It Exist?
The expense factor is a percentage deducted from business bank deposits before the remainder counts as qualifying income. It exists because a business account’s gross deposits aren’t the same thing as the owner’s take-home pay — payroll, rent, inventory, and vendor payments all pass through that same account before anything reaches the owner.
Lendmire places files across several wholesale programs. Their standard expense tiers work like this: 20% for a service business with no employees, 40% for a business with one to five employees, and 50% for a business with six or more employees or any product-based business. A borrower can also bring in an accountant-prepared ratio. In some cases, they can qualify using a profit-and-loss statement instead of raw deposits. This option is capped at a higher assumed-expense ceiling.
Personal account deposits generally skip the expense factor altogether. Money the borrower moves from their own business into a personal account counts in full, dollar for dollar, with no haircut applied.
Does the Mechanism Change at Super Jumbo Size?
The formula stays the same; the file-level pressure around it does not. A borrower qualifying on 12 or 24 months of deposits at $500,000 and a borrower doing the same thing at $8,000,000 use the identical menu of ratios — 20%, 40%, 50%, or a CPA-supported number. There is no separate super-jumbo expense tier written into any program guideline.
What does shift is the review process. Above $4,000,000 in loan amount, files across Lendmire’s network move to case-by-case underwriting rather than a fixed tier lookup. That doesn’t mean the ratio itself gets worse — it means an underwriter is reading the deposit history line by line, cross-checking it against the CPA letter, and deciding whether the documented ratio actually holds up for that specific business. A $150,000-a-month deposit stream from a two-person consulting practice draws a different level of attention than the same number from a national retailer’s local franchise, even if both land at the same nominal ratio.
DSCR loans don’t carry an expense factor at all, since they qualify on the property’s rent against its payment rather than the owner’s personal cash flow. Anyone weighing a bank-statement refinance against a rental-income path on the same property should treat those as two separate underwriting worlds — Lendmire’s complete DSCR loans guide breaks down how the property-income approach works when personal deposits aren’t the right fit.
What Actually Changes: Scrutiny, Not the Formula
The real risk at super jumbo size isn’t a worse ratio — it’s a ratio that doesn’t survive underwriter review. Regulators don’t set the expense factor at all. That mechanic is entirely a program-level convention, which is why the same borrower can see different qualifying income figures from two different lenders reviewing the identical statements.
That flexibility cuts both ways. A file with strong documentation can sometimes support a lower ratio than the default tier. A file with thin support can get pushed to a higher ratio than the borrower expected, even if 50% was supposed to be the ceiling for that business type. At larger balances, underwriters have more dollars riding on getting that number right, so they dig deeper into payroll patterns, vendor cadence, and whether the CPA letter’s numbers actually line up with the account activity.
DSCR loans are business-purpose investment loans. That’s worth mentioning here, because they follow a completely different set of rules. Lenders review them as investor loans, not owner-occupied consumer mortgages. So underwriters focus on the property’s income, not the borrower’s personal expense ratio.
The Refinance Moment: What Gets Recalculated
Refinancing doesn’t reuse the qualifying income from your original loan. Lenders pull a new set of statements and re-total the deposits. They then apply the same expense-factor tier to these new numbers. That tier is tied to the type of business, not the loan balance. The federal Ability-to-Repay standard under Regulation Z requires lenders to make a reasonable, documented judgment about a borrower’s ability to repay. But it doesn’t dictate how a bank-statement program should turn deposits into qualifying income.
That’s where most surprises come from. If the business grew since origination, the higher deposit volume produces a higher qualifying income at the same ratio. If revenue slipped, the opposite happens: qualifying income drops even though the expense factor percentage never moved. Borrowers sometimes assume a lower expense factor would help offset a revenue dip, but the ratio and the deposit level are two separate variables — a smaller haircut on a smaller number still produces less qualifying income than the same haircut on a larger one.
This matters most for borrowers coming off an interest-only period. A file that qualified easily at origination, based on strong trailing deposits, can look different at refinance time. That’s because the new statements set the baseline — not the old ones. So if the business had a slower stretch in between, the numbers may not hold up the same way. Anyone approaching that reset should pull recent statements early. This lets you see where your qualifying income actually lands, before assuming last year’s numbers still apply. Lendmire’s guide on how super-jumbo bank-statement files get read explains how underwriters weigh a deposit history that’s trending up or down.
Rate-and-term and cash-out refinances use the same income calculation. Cash-out simply carries tighter leverage limits and closer reserve requirements, not a different expense-factor approach. Terms vary by lender guidelines, property type, leverage, credit profile, and full file review.
CPA Letters at Super Jumbo Size
A CPA letter can replace the default tier with the business’s actual documented expense ratio, and it matters more, not less, once loan size climbs. The letter has to come from a credentialed preparer who has actually filed the borrower’s returns — self-certification isn’t accepted anywhere in this space — and it needs to cover the same statement period the deposits come from.
At super jumbo loan amounts, a well-supported CPA letter can make a big difference. It can mean the difference between qualifying income that comfortably covers the payment and a file that needs a smaller loan amount or extra reserves to work. Lenders review everything above roughly $4,000,000 case by case. So a letter that’s specific, correctly dated, and consistent with account activity carries real weight. It can help convince an underwriter to accept it as written. Lendmire’s breakdown of how a super-jumbo file applies the CPA letter covers what an usable letter needs to say.
Leverage and Documentation, in Plain Terms
On a primary residence, most wholesale programs in Lendmire’s network run purchase and rate-and-term leverage in the 85-90% range under $1,000,000, stepping down as the loan grows — roughly 75% at the top credit tier by $3,500,000-$4,000,000, then case-by-case review above that on into the tens of millions. Investment properties and second homes typically run about five points lower at every size band. Cash-out proceeds are generally unlimited at or below 60% LTV, with a cap on cash in hand above that threshold on the portfolio program.
Documentation is based on 12 or 24 consecutive months of bank statements. These can be business, personal, or a mix of both. Reserves typically start at three months for smaller loan balances. They step up to nine months or more as the loan size grows. Borrowers also need extra reserves for any other financed properties. Above roughly $3,500,000 on a primary residence (or $3,000,000 on a second home or investment property), most networks add extra requirements. These include a 700 credit floor, a longer housing-payment history, and a longer wait after any credit event. These are typical ranges through select wholesale-network guidelines. They’re subject to full underwriting and are not a guarantee for any specific borrower or file.
Self-employment is common among real-estate investors, so this isn’t a small issue. According to the most recent data from the Bureau of Labor Statistics, roughly 15 million people — about 10.1% of total U.S. employment — are self-employed, according to the BLS. For this group, traditional personal-income documents often understate their real cash flow.
Key Terms Defined
Expense factor: the percentage deducted from business bank deposits to account for operating costs before the remainder counts as income.
Bank statement loan: a mortgage that qualifies a self-employed borrower using deposit history instead of traditional personal-income documentation.
CPA letter: a signed statement from a credentialed accountant certifying a business’s actual expense ratio, used to replace the default tier.
Case-by-case review: manual underwriting applied to larger loan files instead of a fixed leverage or documentation tier.
Interest-only period: a stretch of the loan term where payments cover interest only, before amortization (and often a rate reset) begins.
Frequently Asked Questions
Does a bigger loan amount automatically mean a higher expense factor? No. The tier is set by business type and staffing, not by loan size. A service business with no employees typically starts at the same lower expense-factor tier whether the balance is small or large, since the underwriting distinction rests on the nature of the business rather than the loan amount.
Why does my qualifying income look different at refinance than it did at origination? Because the lender pulls new statements and recalculates from scratch. If deposits rose since origination, qualifying income rises with them; if they fell, it falls too, even though the expense-factor percentage itself hasn’t changed.
Can I bring a new CPA letter at refinance time? Yes, and it needs to match the statement period under review. A new letter from the same or a different credentialed preparer can replace the default tier if it’s properly documented and consistent with the account activity.
Does cash-out refinancing use a different expense factor than rate-and-term? No. Both use the same income calculation. Cash-out simply carries tighter leverage ceilings and reserve requirements. Exact terms depend on the lender’s guidelines, property type, leverage, and a full review of the borrower’s file.
Is there a separate super-jumbo expense-factor rule? Not as a written tier. What changes above roughly $4,000,000 is that files move to case-by-case underwriting, where a documented ratio gets closer scrutiny before it’s accepted.
Are you looking at a super jumbo bank-statement refinance? Do you want to see how your specific deposit history and business type actually work out? Lendmire can help. We compare wholesale programs based on the property, the credit profile, and the leverage the file supports. Call 828-256-2183 or request a quote to start the conversation.
For current guidelines and terms, see Lendmire’s super jumbo bank statement loan programs 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. eCFR — 12 CFR 1026.43 (Regulation Z, Ability-to-Repay)
2. BLS — Self-employment in the United States (Spotlight on Statistics)
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.
