Get A Lower Expense Factor On A 1099 — The Quick Read: Lenders don’t take your gross deposits at face value. They assume a slice of that money went to running your business, and they subtract it before they calculate qualifying income. That slice is the expense factor. The default number is set by your business type and headcount, not by negotiation — but a clean account structure, the right documentation path, and an accountant-backed ratio can move it lower before the file ever reaches underwriting.
Key Terms Defined
Expense factor — the percentage of business bank deposits a lender treats as operating costs and subtracts before counting income.
1099-NEC — the IRS form a business files to report payments to an independent contractor for services performed in a trade or business, per IRS guidance on reporting payments to independent contractors.
Bank statement loan — a mortgage that qualifies a self-employed borrower off deposit history instead of traditional personal-income documentation, using 12 or 24 months of statements.
CPA/EA letter — a written certification from a licensed accountant or enrolled agent stating the borrower’s actual cost ratio, used to replace a lender’s default expense factor.
DTI (debt-to-income) — the share of gross monthly income already committed to debt payments; it caps how much a lower expense factor can actually help.
Key Takeaways
- The starting expense factor is tied to business type and employee count, not to how the borrower feels about their costs.
- Mixing personal and business deposits in one account is the single most common reason a file gets stuck with a higher default ratio.
- An accountant-provided ratio can replace the lender’s assumed number, but it has to hold up to the same documentation period as the statements.
- A lower factor only helps qualifying income up to the point where DTI, not income, becomes the actual ceiling.
- For loans tied to rental property rather than personal cash flow, the expense-factor conversation may not apply at all.
What Sets Your Starting Expense Factor?
Business type and headcount decide the number before anyone looks at your actual spending. Across the wholesale network Lendmire works with, a service business with no employees typically starts at a lower expense ratio. Add one to five employees, and that starting figure generally steps up to a moderate expense ratio. Any product-based business, or a service business with six or more employees, generally lands at a higher expense ratio. These aren’t negotiable mid-file — they’re baked into how the program is built.
That structure exists because a solo consultant working from a laptop has almost no overhead, while a retail shop with staff and inventory clearly does. The lender isn’t guessing at your specific costs — it’s applying a category assumption, and the category is set by what your business looks like on paper before the file goes anywhere.
There are two ways around the category default: an accountant-certified ratio, or a profit-and-loss method that’s capped at 80% income recognition (in other words, a 20% floor on the expense side). Both replace the automatic number with something documented — but only if the paperwork is airtight.
Step 1: Separate the Business From the Personal
If a business account also pays for groceries, a mortgage, or a car note, the underwriter can’t tell what’s really operating expense and what’s personal spending routed through the business. That ambiguity almost always pushes the file toward the higher default ratio, not the lower one.
The fix is simple and it has to happen before statements get pulled: run business income and business expenses through a dedicated account, and keep personal spending out of it entirely. Transfers from that business account into the borrower’s personal account still count in full toward qualifying income across the network Lendmire places files with — so the separation costs nothing on the income side. It just removes the noise that makes an underwriter default to the conservative number.
Step 2: Get an Accountant-Certified Ratio
A CPA or enrolled agent letter is the most direct lever a borrower controls. Instead of accepting the category default — 20%, 40%, or 50% depending on business type and staff count — the accountant reviews actual books and certifies what percentage of gross revenue really goes to non-discretionary operating cost.
The letter has to cover the same period as the bank statements being used, and it has to speak in specifics: the ratio, the basis for it, and the accountant’s credentials. A vague one-line note saying “expenses are low” doesn’t hold up. Lendmire’s broader coverage of this exact mechanic — can a CPA letter lower the expense factor on a 1099 bank statement loan — walks through what makes a letter strong enough to actually move the number.
Service businesses tend to get the most benefit from this step, since their real costs are often well below the category default. A business with real product costs, inventory, or a large payroll usually finds the accountant-certified number lands close to the automatic one anyway — there’s just not as much room to move.
Step 3: Match the Documentation Path to the Business
Not every self-employed borrower should default to business bank statements. Consider a borrower who receives 1099-NEC income and has genuinely low overhead. This borrower may find that a different documentation path produces a stronger coverage figure entirely, without any expense factor conversation at all.
Lenders treat personal bank statements differently from business statements. They generally average deposits directly, without applying an expense-ratio haircut. But this only works cleanly if the income lands in a personal account without needing separation from business activity. That’s common for solo contractors. It’s less common for anyone running a business with real overhead.
The right call depends on three things: how much the business actually spends, whether the accounts are already clean, and how much history exists. A borrower two years into a business with thin records might do better leaning on the profit-and-loss method. A borrower with twelve clean months and a strong CPA relationship might get more traction with a certified letter on business statements.
Step 4: Pick the Lookback Window That Helps You
Programs across the network Lendmire works with generally run either 12 or 24 consecutive months of statements — and the bank-portfolio side of the market specifically uses a 12-month window. That choice isn’t neutral. If the most recent year was the strongest, a shorter window captures more of the upside. If the business had a rough stretch recently but a strong two years overall, the longer window smooths it out.
This decision has to be made before statements are pulled, not after — switching windows mid-file usually means starting the documentation process over.
Comparing the Paths at a Glance
| Path | How Income Is Calculated | Best Fit |
|---|---|---|
| Business statements, category default | Deposits × (1 − 20/40/50%) | Straightforward businesses, no time for a CPA letter |
| Business statements, CPA-certified ratio | Deposits × (1 − certified %) | Low-overhead service businesses with clean books |
| Profit-and-loss method | Capped at 80% income recognition | Borrowers with accountant-prepared P&L, thinner bank history |
| Personal statements | Deposits averaged directly | 1099 contractors paid straight into a personal account |
What Can Push Your Factor Higher Instead?
Mixed accounts are the biggest risk — but they’re not the only one. Large, unexplained transfers into a business account, seasonal deposit swings without a clear pattern, and an ownership stake below the roughly 25% threshold most programs require to use business statements at all can each complicate the calculation. A borrower who owns less than that share of the business generally can’t use its statements to qualify, full stop, regardless of what the expense ratio might otherwise be.
Product-based businesses that also offer services face their own challenge. Say a business sells hardware and also does repair work. Underwriters must classify it as one type or the other. That classification decision affects which default ratio applies. This happens before any certification conversation even starts.
Does a Lower Expense Factor Always Help?
Not always — and this is where a lot of borrowers spend effort in the wrong place. Lowering the expense factor raises qualifying income, but qualifying income only matters up to the point where debt-to-income becomes the binding constraint. Programs across the network Lendmire places files with generally allow DTI up to 50%. If a borrower is already well under that ceiling, squeezing five more points out of the expense ratio may not change what they can actually borrow. If DTI is the tight constraint, a bigger loan size instead of a lower factor might be the more useful conversation. Worth running both numbers before spending time and money on a CPA letter.
Who This Strategy Fits — and Who It Doesn’t
This playbook fits a self-employed or 1099-paid borrower whose real operating costs run meaningfully below the category default. Think of a consultant, a designer, or an attorney in solo practice — anyone whose overhead is mostly time, not physical costs. It fits less well for a borrower whose business genuinely does carry high costs. Certifying a number below actual expenses just sets up a qualifying income figure that doesn’t reflect reality. Some programs cap how aggressively you can push the ratio down for exactly this reason.
It’s also worth asking whether you need the expense-factor conversation at all. If the loan is for a rental property rather than a primary residence, you can qualify off the property’s own income instead of your personal cash flow. Lendmire’s complete DSCR loans guide covers how that works. On the appraisal side, agencies use standardized forms like the Single-Family Comparable Rent Schedule for one-unit rentals, per Fannie Mae’s Form 1007 documentation. The non-QM world has borrowed this terminology, even though DSCR programs don’t follow agency underwriting rules. For an investor buying rental property, sidestepping the expense-factor question entirely by qualifying on rent instead of personal deposits is often the more practical move. See how that trade-off plays out for service-business owners specifically in Lendmire’s piece on winning a lower expense factor on a service business.
For borrowers using this kind of documentation for a larger purchase or refinance, the program range across Lendmire’s network runs from roughly $300,000 up through $30,000,000 combined across a portfolio non-QM path and a bank-portfolio path with its own size-based leverage ladder — every file above $4,000,000 gets reviewed case by case before it’s submitted anywhere. None of that changes the expense-factor mechanics above; it just sets the ceiling on how much qualifying income actually needs to matter.
Here’s the general underwriting backdrop. The CFPB’s Ability-to-Repay rule sets the baseline. It says a lender must make a reasonable, good-faith decision that a borrower can repay the loan. But this rule doesn’t say how non-QM lenders must calculate income. That’s why expense-factor conventions like these exist at the program level. They aren’t a fixed federal formula.
None of the figures above are a commitment to lend, and every leverage and documentation detail is subject to full underwriting and lender guidelines, which vary by borrower, business type, and property. Tax treatment of any related deductions depends on individual facts, and readers should keep clear records and talk to a qualified tax professional before relying on this material. This article is educational only, not legal or tax advice — anyone weighing a specific business structure or filing position should consult a CPA or attorney familiar with their own situation.
Frequently Asked Questions
Can I lower my expense factor if my business has no employees?
Yes, that’s the profile with the most room to move. A service business with no employees typically starts at the lowest category default already, and an accountant-certified letter can sometimes push it lower still, since solo-operator overhead is often genuinely thin.
Does a CPA letter guarantee a lower expense factor?
No. It replaces the lender’s assumed ratio with a documented one, but the letter has to cover the right time period and state a specific, defensible percentage. A weak or vague letter may simply get set aside in favor of the category default.
What if my business sells both products and services?
Expect the underwriter to classify the business as one or the other based on how it’s documented and presented, and that classification decides which default ratio applies before any certification discussion starts. Clean, consistent bookkeeping around the dominant revenue stream helps.
Should I use 1099 income directly instead of bank statements?
It depends on where your income lands. If it’s deposited into a personal account without needing separation from business costs, personal-statement treatment may produce a cleaner number than running it through the business-statement expense-factor process. If it flows through a business account with real overhead, business statements with a certified ratio may be the stronger path.
What happens if my actual expenses are higher than the default ratio?
A certified ratio below your real costs doesn’t help you long-term — it inflates qualifying income against cash flow that isn’t really there. Programs generally expect the certified number to reflect the accountant’s honest read of the books, not the lowest figure a borrower can get someone to sign.
Do you want to buy or refinance a rental property, rather than qualify using personal deposits? Lendmire can help. We’ll compare DSCR loan options based on the property’s own rental income, your credit profile, leverage, and your investor goals. Reach our team at 828-256-2183 or submit a mortgage quote request to see which documentation path fits you.
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 DSCR and non-QM mortgage brokerage with investor loan programs in 40 markets, including Washington, D.C. DSCR eligibility is commonly reviewed by the lender around property-level rent rather than personal income documentation, subject to lender guidelines, and the brokerage helps arrange financing for LLC-owned portfolios beyond conventional financed-property limits. Recognized by Scotsman Guide as 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. IRS – Reporting Payments to Independent Contractors
2. Fannie Mae – Single Family Comparable Rent Schedule (Form 1007)
Brandon Miller
Founder & CEO, Mortgage Loan Originator, Lendmire LLC
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Disclosure information. Lendmire is a state-licensed mortgage brokerage under NMLS# 2371349. Lendmire is not a depository institution, direct lender, or financial advisor — all loans referenced are placed through wholesale lender partners and are subject to each lender's underwriting standards. This article is provided for general informational purposes and is not a commitment to lend, nor does it constitute financial, legal, or tax advice. Loan programs, terms, rates, and qualification standards change without notice and depend on borrower profile, property type, and the state in which the subject property is located. Equal Housing Opportunity provider. NMLS Consumer Access: nmlsconsumeraccess.org.
