Practice Owner Controls The Expense Factor On A Refinance — The Quick Read: A practice owner controls the expense factor mainly through documentation and account structure — not by negotiating with an underwriter. The lender starts with a fixed ratio based on business type and staffing, but a properly routed deposit history, a CPA-signed cost breakdown, or a profit-and-loss statement can each replace that default with a number closer to the practice’s real overhead. The lever is paperwork, applied before the file goes to underwriting, not after.
Most self-employed borrowers never hear the term “expense factor” until a loan officer explains why their qualifying income looks smaller than their bank balance. For a practice owner — a physician, dentist, attorney, consultant, or any owner-operator running their own shop — this single number often decides how much cash-out a refinance actually produces. It can matter more than the rate itself.
Key Terms Defined
Expense factor — the percentage of gross business deposits a lender assumes covers operating costs before counting the rest as qualifying income.
Bank-statement loan — a mortgage that qualifies a borrower using 12 or 24 months of deposit history instead of traditional personal-income documentation.
Qualifying income — the monthly income figure a lender actually uses to calculate how much loan a borrower can carry, after the expense factor is applied.
CPA letter — a signed statement from a licensed accountant certifying a business’s actual cost ratio, used to override the lender’s default assumption.
DSCR — debt-service coverage ratio, a separate calculation used on rental property files that measures whether a property’s rent covers its own payment, independent of the owner’s personal income.
What The Expense Factor Actually Does
The expense factor exists because a business bank account holds gross revenue, not take-home pay. A lender can’t count every dollar that lands in a practice’s operating account as personal income, since payroll, rent, supplies, and insurance all come out of that same pool before anything reaches the owner.
Across the wholesale bank-statement network Lendmire works with, this shows up as a fixed ratio applied to eligible deposits over a 12- or 24-month look-back. The math is simple: total eligible deposits, divide by the number of statement months, then reduce that figure by the assigned ratio to land on monthly qualifying income. A higher ratio means less qualifying income. A lower one means more borrowing capacity, without changing a single fact about the business.
Personal-account deposits generally skip this haircut entirely. The reasoning: expenses already cleared before the money reached the owner’s personal account. This is exactly why account routing is the first lever a practice owner has — often before a loan application is even filed.
How The Ratio Gets Set
Programs in Lendmire’s network typically assign the expense ratio by business type and headcount, not a single flat number for everyone. A solo service practice with no employees — think a solo consultant or a single-provider telehealth practice — usually sits at the lightest tier. A practice running a small handful of employees typically lands at a moderate tier. A larger group with several staff members, or any business selling a physical product rather than a service, usually gets assigned the heaviest default tier.
This structure rewards low-overhead professional practices. It penalizes staff-heavy or inventory-heavy operations. That makes sense, since each type of business spends its revenue differently. A borrower can skip the fixed tiers entirely by using an accountant-provided ratio. Or a borrower can qualify under a profit-and-loss method. Some programs in the network cap this method at 80% of stated deposits.
None of these are universal rules across every lender — they’re guideline ranges from select wholesale programs, and the exact ratio a given file lands on depends on underwriting review of the specific business.
The Levers A Practice Owner Actually Controls
Documentation is the real override. A signed CPA or tax-preparer letter can replace the lender’s default assumption with the practice’s real cost ratio. If a solo practitioner’s actual overhead runs closer to 20% than the fixed tier the lender would otherwise assign, that letter is the single highest-leverage document in the file. Lendmire’s complete DSCR loans guide walks through how documentation choices shape qualifying income across non-QM programs generally, and a deeper look at how a CPA letter can cut a practice owner’s bank statement covers what that letter needs to contain.
Account routing matters before the file is ever opened. Deposits that flow from the practice’s business account into the owner’s personal account count at full value — no haircut applied — because that money has already cleared the business side. A practice owner who structures distributions cleanly, separate from rental income or other side businesses, gives an underwriter a much easier file to certify.
Knowing when NOT to document is just as important. The CPA-override path only helps when the practice’s real cost structure is lighter than the lender’s flat default. A six-employee dental practice with genuinely high overhead — staff, equipment leases, supply costs — is often better off accepting the standard 40% or 50% tier than requesting a certified letter that documents an even worse ratio. This is the mistake that costs practice owners the most: assuming documentation always helps. It doesn’t. It should only be requested after running the real numbers, which is exactly the exercise covered in how practice owners can lower the expense factor.
Personal Vs. Business Deposits: Why Routing Is The First Decision
Commingled accounts cause underwriting headaches and documentation risk. When personal and business deposits mix in the same account, it’s harder to isolate what actually counts as operating income. Is a deposit a transfer? A loan? A one-time payment? This is harder for the underwriter to figure out — and harder for any preparer trying to certify a lower ratio.
A practice owner who keeps clean separation between the practice’s operating account and personal spending gives the file a much stronger foundation. It’s not glamorous advice. But it’s the single most controllable variable a borrower has, months before applying for a refinance — well before a CPA letter or documentation choice even enters the picture.
Where This Meets Rental Property Financing
Many practice owners are also landlords. It’s worth being clear about one thing: the expense factor on a personal refinance and the income calculation on a rental property work in completely different ways. A refinance on the practice owner’s residence, or on the practice’s commercial space, runs on the deposit-based expense factor described above. A rental property typically works differently — it’s reviewed using DSCR. DSCR measures whether the property’s own rent covers its own payment. This is independent of the owner’s traditional personal-income documentation or business deposits.
Practice owners who run both structures often qualify their residence through bank statements. Meanwhile, their rental portfolio runs entirely on property-level DSCR. Lendmire’s DSCR vs. conventional breakdown covers this distinction in more depth. It matters here mainly because people sometimes mix the two up. A documented business expense ratio doesn’t change a rental property’s DSCR — but assuming it does is a common and avoidable mistake.
Short-term rental income, when it’s involved, applies its own separate haircut at the property level rather than the borrower level — a different mechanic from anything discussed here, and one that varies significantly by lender and by property type.
When The Practice Owns The Building
A meaningfully different question sits behind all of this: whether the practice owner should be refinancing the building at all, versus monetizing it. Physician and dental groups that own the real estate their practice occupies increasingly weigh a sale-leaseback instead of a straight refinance. With the average physician age sitting at 53.9 and typical medical-office leases running 10 to 15 years, the timing question comes up more than most refinance conversations acknowledge, according to the CCIM Institute.
The logic is straightforward: an owner-operator who both practices medicine and owns the building has concentrated risk in one asset. A problem with the practice hits the real estate, and a problem with the building hits the practice. A sale-leaseback separates those two risks into distinct assets, while a straight refinance keeps them tied together. Where a rental property is involved instead of an owner-occupied practice building, Fannie Mae’s Single-Family Comparable Rent Schedule — Form 1007 — governs how appraisers estimate the property’s income potential, a separate mechanic entirely from the borrower-side expense factor discussed throughout this piece.
What The Files Actually Look Like
Across the wholesale bank-statement network, files in this size range typically run $300,000 to $6,000,000 on a portfolio non-QM program, with a separate bank portfolio program carrying 12-month-statement files to $30,000,000 on its own leverage ladder — 65% to $5,000,000, stepping to 60% at $10,000,000 and 55% at $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 loan size climbs: typically 90% to $1,000,000, 85% to $2,000,000, 80% to $3,000,000, and 75% at the strongest credit tier to $4,000,000, before moving to case-by-case review above that. Second homes and investment properties generally run about five points lower at each size band.
Credit requirements typically start around a 660 floor on the portfolio program, rising to 680 on the bank program and 700 above the super-jumbo threshold. Reserve requirements usually run 3 months of payments to $500,000 in loan size, 6 months to $1,500,000, and 9 months above that. Cash-out above 60% LTV is typically capped near $1,500,000 on the portfolio program. Every one of these figures is a guideline range from select wholesale programs, subject to full underwriting — not a guarantee, and every file above $4,000,000 gets reviewed case by case before it’s even submitted.
Files with clean account separation move faster. If a file has a well-supported CPA letter too, underwriting usually needs fewer follow-up conditions. Files where personal and business deposits blur together often need more rounds of clarification before they clear. The difference often isn’t the final ratio itself — it’s how many rounds of back-and-forth the file needs.
Common Misconceptions
A tax return doesn’t tell the whole story for a self-employed borrower, and that’s by design — a good accountant reduces taxable income through legitimate deductions, which is exactly why bank-statement documentation exists as an alternative path.
A CPA letter isn’t automatically the right move. It only helps when it documents a ratio lighter than the lender’s default; requesting one blind can backfire.
DSCR and bank-statement expense factors aren’t the same mechanic — one measures the borrower’s business, the other measures a rental property’s own cash flow.
And owning the building a practice operates from isn’t always the smart long-term play. Trade coverage of the medical and dental sector increasingly frames single-asset concentration as a real risk, not an obvious advantage.
Frequently Asked Questions
Does the expense factor apply to a cash-out refinance the same way it applies to a rate-and-term refinance? Yes. The ratio itself doesn’t change based on the refinance type — it’s applied the same way to eligible deposits either way. What changes is the leverage ceiling: cash-out proceeds are typically capped lower than a rate-and-term refinance at the same loan size, and the qualifying income calculated from the expense factor still determines how much of that available leverage the borrower can support.
Can a practice owner request a lower expense ratio on a refinance if their business has grown since the last loan? Generally yes, since qualifying income is recalculated fresh at every refinance using current statements. A practice that’s added staff since its last loan might actually see the assigned tier move higher, not lower, which is why documenting the real ratio through a CPA letter matters more as a business scales.
What if my practice runs both personal and business accounts, and I’ve been depositing patient payments into my personal account directly? That routing choice generally avoids the expense-factor haircut on those specific deposits, since personal-account deposits are typically treated as already-net income. It does create a documentation trail an underwriter will want explained clearly, particularly around ownership share and consistency month to month.
Is a profit-and-loss statement ever better than 12 months of bank statements?
It can be, particularly for practices whose deposit history doesn’t reflect their true monthly income cleanly — some programs in the network cap the P&L method at 80% of stated deposits. Whether it’s the stronger path depends on how clean the practice’s actual books are and how consistent monthly deposits have been.
Do I need 12 or 24 months of statements?
Both windows exist across the network, and a longer 24-month window can smooth out a slow month or two, while a 12-month window can better reflect recent growth. Which one produces the stronger qualifying-income figure depends entirely on the shape of the practice’s deposit history.
If you’re weighing whether to refinance a practice-owned property or a rental portfolio, Lendmire can help compare how documentation choices, account structure, and leverage options fit the specific business and property involved.
For current guidelines and terms, see Lendmire’s super jumbo bank statement loan programs page.
About Lendmire
Lendmire (NMLS# 2371349) is a mortgage brokerage focused on DSCR investor financing, helping arrange programs through wholesale and investor-lending channels in 40 markets, including Washington, D.C. DSCR loans are evaluated by the lender on property cash flow rather than personal income, subject to lender guidelines, supporting LLC closings and accommodating investors with four or more financed properties. Scotsman Guide Top Mortgage Workplace in both 2025 and 2026.
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References
1. CCIM Institute — Why Now Could Be the Time for Doctors to Cash Out Their Buildings
2. 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.
