Stop The Expense Factor From Sinking — The Quick Read: On a super jumbo bank-statement refinance, the “expense factor” is the percentage an underwriter subtracts from gross bank deposits before counting the rest as income. Get that ratio wrong — or let a lender default to the highest tier — and a file that looks fine on paper can suddenly show a debt-to-income ratio too high to close. The fix usually isn’t more income. It’s picking the right documentation path before the file gets built, not after.
This matters more at the top of the market than anywhere else. Leverage already steps down as loan size climbs, so a self-employed borrower refinancing a large-balance property has less room to absorb a bad income number than someone refinancing a modest rental. Understanding how the expense factor works — and where it can be negotiated — is the difference between a clean approval and a file that dies in underwriting.
Key Terms Defined
Expense ratio (bank-statement lending): the percentage of gross deposits an underwriter assumes goes to business costs, subtracted before the rest counts as qualifying income.
Debt-to-income ratio (DTI): the borrower’s total monthly debt obligations divided by qualifying monthly income, expressed as a percentage.
Loan-to-value ratio (LTV): the loan amount divided by the property’s appraised value or purchase price, expressed as a percentage.
Interest-only period: a stretch of the loan term where payments cover interest only, with no reduction of principal, before the loan converts to fully amortizing.
Seasoning: the length of time that must pass after a credit event, or between one loan action and the next, before a lender will consider the file.
What Actually Causes the Expense Factor Problem
The expense factor becomes a problem when the underwriter assumes a higher business-cost percentage than the borrower’s actual overhead. This shrinks qualifying income below what the debt-to-income math needs. Across the wholesale network Lendmire places files with, this shows up most often on service businesses with lean staffing. These businesses still get bucketed at a default ratio built for a heavier-overhead operation.
The fixed ratios most programs in the network apply typically scale with staffing and business type. Lean service businesses sit at the lowest tier, small-staff operations sit in a middle tier, and larger or product-based businesses sit at the highest tier. These tiers exist because underwriters need a defensible, repeatable way to estimate real business overhead from twelve or twenty-four months of statements without a full accounting review. A solo consultant with no payroll and low overhead can end up with the same haircut as a business with real fixed costs. This happens purely because the file was built around the wrong bucket.
There are two ways around a bad default ratio. One is a CPA-provided expense ratio, where the borrower’s accountant documents an actual overhead percentage lower than the fixed tier the file would otherwise land in. The other is a profit-and-loss method, capped at 80% of gross deposits, which some borrowers use instead of a flat ratio entirely. Neither path is automatic — it depends on the borrower’s documentation and the specific program’s underwriting appetite — but both exist specifically because the fixed brackets don’t fit every business.
Where the Expense Factor Sinks a Super Jumbo File
The expense factor sinks a refinance when the resulting qualifying income pushes debt-to-income past the program’s ceiling, or when it drops the file into a size tier with tighter leverage than the borrower expected. On a jumbo purchase this is annoying. On a refinance carrying a large existing balance, it can mean the loan simply doesn’t fit.
Through select wholesale programs, debt-to-income can run up to 50% on most files, subject to underwriting. That ceiling gives some room, but a wrongly-assigned expense ratio can eat that room fast. A borrower who runs a lean, low-overhead business but gets defaulted into a 50% haircut may see qualifying income drop by enough to push DTI over the line — not because the business underperformed, but because the file used the wrong bucket.
Size compounds the problem. Loan amounts through this program run from roughly $300,000 up to $30,000,000 across two wholesale channels — a portfolio non-QM program carrying files to $6,000,000, and a bank portfolio program that carries twelve-month-statement files on its own ladder up to $30,000,000, stepping down from 65% at the smaller end of that range to 60% and then 55% as size climbs, with interest-only available at 60% or the band’s ceiling, whichever is lower. Primary-residence leverage on the broader program also steps down with size — 90% up to $1,000,000, 85% up to $2,000,000, 80% up to $3,000,000, 75% at the top credit tier up to $4,000,000, and case-by-case review above that. Second homes and investment properties run roughly five points lower at every size band. Every figure above $4,000,000 is reviewed case by case before submission, never quoted as a flat ceiling.
That stepped ladder means a borrower who is already near a size-tier line has almost no cushion left if a bad expense ratio pushes DTI or reduces qualifying income further. The margin that would absorb a documentation misstep on a smaller loan simply isn’t there at the top of the ladder.
The Documentation Fix: Match the Path to the Business
The fastest way to stop the expense factor from sinking the file is simple. Choose the qualification path that fits the borrower’s actual business structure before the loan gets submitted, not after a decline. Lendmire is a mortgage broker that arranges super jumbo bank-statement refinances through select wholesale lenders. It typically walks through three questions with a borrower before picking a path: How many employees does the business carry? Does the business generate a clean profit-and-loss statement? Does the borrower have enough liquid assets to qualify a different way entirely?
Business bank statements need at least 25% ownership to count. Qualifying income is calculated as eligible deposits divided by the number of statement months — twelve or twenty-four, depending on the program — after the expense ratio is applied. One detail surprises a lot of high-net-worth borrowers: transfers from the borrower’s own business account into a personal account count at 100%, with no expense haircut applied a second time. Structuring which account statements get submitted, and in what order, can materially change the qualifying-income outcome.
Some borrowers have business income that genuinely doesn’t map to a fixed ratio. This includes a product company with unusual margins, or a service business with real fixed overhead a CPA can document. For these borrowers, the CPA-provided ratio or the profit-and-loss method — capped at 80% of gross deposits — can produce a cleaner number than the default bracket. Some borrowers would rather sidestep income-based qualification altogether. Asset-based paths exist for them too: an asset allowance divides liquid assets by 36, 60, or 84 months depending on the file. A standalone assets-only path qualifies with no DTI calculation at all when U.S. liquid assets equal the loan amount plus closing costs. That last path is worth a look for any borrower whose expense-ratio math simply isn’t working. It removes the expense factor from the equation entirely.
A Note on the DSCR Version of This Problem
Rental-property investors refinancing through a DSCR loan run into a related but different version of this same discounting logic. On a DSCR file, the property’s rent — not the borrower’s bank deposits — is what gets discounted before it counts. Trade coverage of the DSCR space commonly describes lenders multiplying gross monthly rent by roughly 0.75 to build in a vacancy and expense cushion, with the appraiser’s Fannie Mae Form 1007 rent schedule supplying the market-rent figure that haircut gets applied to on a single-unit investment property.
That is a different mechanism from the bank-statement expense ratio described above — one discounts gross rent, the other discounts gross business deposits — but both exist for the same reason. Lenders need a conservative, repeatable way to shrink a raw number into something that reflects real-world cost before they’ll count it as qualifying income. Investors weighing a rental-property refinance instead of a bank-statement file can get a fuller picture of how that ratio works in Lendmire’s complete DSCR loans guide.
DSCR loans are designed for non-owner-occupied investment properties. Because they are business-purpose loans, they get reviewed differently from a standard owner-occupied mortgage, and qualification runs primarily on the property’s rental income covering the payment, subject to lender guidelines.
Above the Super-Jumbo Line: Overlays That Change the Math
Once a loan crosses into super-jumbo territory — above $3,500,000 on a primary residence, or above $3,000,000 on a second home or investment property — a separate set of overlays kicks in, and the expense factor becomes even less forgiving. Credit floors rise to 700. Lenders want 0x30x24 housing history, meaning no late mortgage payments in the trailing twenty-four months. Any credit event on the file needs 48 months of seasoning. Non-occupant co-borrowers aren’t permitted, and rural property is excluded outright.
One overlay is worth flagging specifically for refinance borrowers: cash-out proceeds cannot be used to satisfy reserve requirements above the super-jumbo line. Reserves typically run three months of payments up to $500,000 in loan size, six months up to $1,500,000, and nine months above that. Add two more months per other financed property, up to a twelve-month maximum. First-time investors generally need the full twelve months. If an expense-ratio miscalculation has already thinned out qualifying income, a borrower can’t simply lean on refinance proceeds to plug the reserve gap. The reserves have to exist independently.
Cash-out itself carries its own ceiling. Through the portfolio program, cash-out proceeds are unlimited at or below 60% LTV, but capped at $1,500,000 above that leverage point. The bank program carries no published cap on its own ladder. Either way, a borrower planning a large cash-out refinance should size the leverage request against the expense-ratio outcome before assuming the full proceeds amount is available. Terms vary by lender guidelines, property type, leverage, credit profile, and full file review.
Building the File Before the Expense Factor Decides It For You
The strongest move an investor or high-net-worth borrower can make is running the expense-ratio math against every documentation path before choosing which one to submit. A file built around a default 50% ratio, when a CPA letter or profit-and-loss statement would support a lower one, is leaving qualifying income on the table for no reason. A file built around bank statements at all, when an assets-only path would clear with no DTI calculation, may be solving a problem that doesn’t need to exist.
This is also where timing the size tier matters. Because leverage steps down at $1,000,000, $2,000,000, $3,000,000, and again above $4,000,000, a borrower sitting just above one of those lines may find that a slightly smaller loan amount — paying down a bit more at closing, or structuring the cash-out request more conservatively — clears a materially better leverage tier. That tradeoff is worth running the numbers on before locking in a loan amount.
Did you come here from a DSCR angle rather than a bank-statement one? You may want to look at how a related file gets built from a CPA letter and financial statements. Lendmire covers this in its piece on how a super jumbo bank-statement loan applies the CPA ratio. You can also read about the deeper mechanics of setting the expense factor on a super jumbo file.
Tax treatment of any refinance proceeds or property structure depends on how the funds are used and how title is held, so borrowers should keep clear records and talk to a qualified tax professional before assuming any deduction applies.
Non-QM lending overall has been growing fast enough that this kind of large-balance file is becoming more common, not less. Non-QM originations are on pace to set another post-crisis record, with DSCR and investor products now making up roughly half of all non-QM collateral, and part of that growth is coming from high-quality, jumbo-like loans market participants informally call “fumbos” moving through the same channel, per HousingWire. That growth cuts against a persistent misconception, too — non-QM borrowers are not inherently weaker credits. The average non-QM borrower carried a 776 FICO score in a recent year, essentially on par with conventional borrowers, according to Scotsman Guide. The expense factor exists to control for cash-flow uncertainty in a business or a rental, not to flag a weak borrower — and treating it as a credit-risk signal leads people to negotiate the wrong point of the file. Exact terms depend on the lender’s guidelines, property type, leverage, and a full review of the borrower’s file.
This article is for general information and isn’t legal or tax advice. Borrowers should talk with a qualified attorney or CPA about how any of this applies to their own situation before making a decision.
Frequently Asked Questions
Does a higher expense ratio always mean the loan won’t close?
Not always, but it shrinks the qualifying-income cushion the file has to work with. On a smaller loan there may be enough DTI room to absorb it. On a super jumbo file, where leverage is already tighter and reserves run higher, a bad expense ratio has much less margin to hide in.
Can a borrower switch from bank statements to an asset-based path mid-file?
Sometimes, depending on the lender and how far the file has progressed. It’s almost always cleaner to compare both paths — bank statements against an asset allowance or assets-only qualification — before submission, since switching after underwriting has started can add friction and require re-documentation.
Why do transfers from a business account count differently than other deposits?
Because they’re already the borrower’s own money moving from one account to another, not new business revenue. Programs in Lendmire’s network typically count those transfers at 100%, with no expense-ratio haircut applied a second time, since the deposit already passed through the business account it originated from.
Is the expense factor the same as the DSCR rent haircut on an investment property?
No — they’re related concepts but different mechanisms. The bank-statement expense ratio discounts a self-employed borrower’s gross deposits to estimate real income. The DSCR expense factor discounts a rental property’s gross rent to estimate real cash flow. They share the same underlying logic but apply to entirely different loan products and documentation.
Does a CPA letter guarantee a lower expense ratio?
No guarantee, but it opens the door. A CPA-documented ratio is reviewed against the borrower’s actual financials and the specific program’s guidelines, and whether it’s accepted in place of the fixed bracket depends on the file, the lender, and the strength of the documentation supporting it.
Is a large-balance refinance getting complicated by how income or business deposits are counted? Lendmire can help. It compares qualification paths — bank statements, a CPA-supported expense ratio, or an asset-based route — across its wholesale network. This happens before the file gets built the wrong way.
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
Lendmire, NMLS# 2371349, is a non-QM mortgage broker serving real estate investors in 40 markets, including Washington, D.C., through DSCR investor loan programs. Qualification is generally reviewed around the subject property’s rental income, not the borrower’s W-2 history — a practical fit for LLC-titled portfolios and self-employed investors. All scenarios remain subject to lender review and program guidelines. Two consecutive Scotsman Guide Top Mortgage Workplace recognitions (2025, 2026).
Lendmire’s Top Mortgage Workplace recognition is documented by Scotsman Guide 2025 Top Mortgage Workplace.
Lendmire’s Top Mortgage Workplace recognition is documented by Scotsman Guide 2026 Top Mortgage Workplace.
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References
1. Fannie Mae — Form 1007 Single-Family Comparable Rent Schedule
2. HousingWire — Non-QM originations forecast to reach $175B in 2026
3. Scotsman Guide — Which groups are driving non-QM lending
4. Scotsman Guide 2025 Top Mortgage Workplace
5. Scotsman Guide 2026 Top Mortgage Workplace
Brandon Miller
Founder & CEO, Mortgage Loan Originator, Lendmire LLC
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Required disclosures. Lendmire (NMLS# 2371349) operates as a licensed mortgage broker, not a direct lender or depository. The discussion in this article is general in nature and should not be relied upon as financial, legal, or tax advice — every investment scenario is unique and should be reviewed by a qualified professional. Any loan inquiry is subject to lender underwriting, and this article is not a commitment to lend or a guarantee of approval. Mortgage rates, loan terms, and program guidelines vary by borrower, property, and state, and may change without notice. Equal Housing Opportunity. Verify licensure at NMLS Consumer Access.
