
The Quick Read: The default expense factor is the simplest path and suits businesses whose costs look typical, a CPA letter pays off only when your real costs run below that default, and a first-page option is a lender-specific shortcut that many programs do not offer, so your choice depends on your actual expenses and the lender’s guideline sheet.
- The expense factor is the share of your business deposits that a lender treats as the cost of running the business. The rest counts as income.
- A CPA letter swaps the lender’s fixed percentage for your real expense ratio. It helps when your costs are low and hurts when they are high.
- A first-page option, where a lender publishes one, trades documentation depth for convenience. Most programs expect every page of every statement.
- You do not pick the factor. The lender sets the method, and you supply the documents.
- Across Lendmire’s wholesale network, the right method depends on the business, the property, and the lender’s guidelines.
Who Each Option Is Really For
The default is for the borrower who wants the fewest moving parts. You hand over statements, the lender applies its fixed ratio, and the deal moves forward. It works well when your business carries typical costs for its type.
What your deposits qualify you for.
Alt-doc programs read 12 months of business or personal bank deposits instead of tax returns. Enter your average monthly deposits and see the income a lender would credit you.
The expense factor is set by the lender from your business type and profit-and-loss statement; it is not a number you choose. This widget quotes no rate and no payment.
Program parameters shown update from Lendmire’s centralized guideline source.
Estimate
Illustrative estimate only — not a quote, Loan Estimate, approval, or commitment to lend. Deposit average, expense factor, and housing ratio are editable assumptions; the expense factor a lender applies is set from your business type and documentation. No interest rate or monthly payment is quoted here. Purchase capacity is a simplified illustration and does not account for taxes, insurance, HOA dues, or other debts. Alt-doc income documentation is available on consumer mortgages in the states where Lendmire is licensed for consumer lending; actual terms vary by lender, borrower, and property.
The CPA letter is for the borrower whose books show costs well below the default. Think of a solo consultant with almost no payroll or inventory. A licensed preparer certifies the real ratio, and qualifying income rises.
The first-page option is for a narrow group. It exists at some lenders as a streamlined way to document deposits. It is not a recognized industry standard, so treat it as something to confirm on a specific program sheet, not something to plan around.
That is the whole decision in miniature. Everything below is the detail.
Side-by-Side
The columns below show each documentation path, noting where an industry norm is published and where none is. Individual lender guidelines differ, and every file is underwritten on its own.
| Factor | Default | CPA Letter | First-Page |
|---|---|---|---|
| Review basis | Deposits times fixed expense ratio | Deposits times certified ratio | Deposit summary from partial pages |
| What you submit | Full statement set | Statements plus signed letter | Limited pages, lender-specific |
| Outside professional | None | CPA, EA, or preparer | None typically |
| Effect on income | Set by lender | Can rise or fall | Follows the lender’s method |
| Entity vesting | Program-dependent | Program-dependent | Program-dependent |
| Occupancy fit | Owner-occupied and some investment | Same as default | Varies widely by lender |
| Reserves | Commonly around 6 months | Commonly around 6 months | Often set higher or per sheet |
| Main risk | Overstated costs lower income | Letter shows higher costs | Narrow availability |
A few rows deserve a plain-English gloss. Reserves means liquid money left after closing, measured in months of the housing payment. Across our network, around six months is common, and the exact number depends on the program and the file.
Key Terms Defined
Expense factor: the percentage of gross business deposits a lender counts as business costs, with the remainder treated as qualifying income.
Default (fixed ratio): the lender’s standard expense factor, applied when you provide nothing more than statements.
CPA letter: a signed statement from a licensed preparer, usually a CPA, enrolled agent, or credentialed tax preparer, certifying your business’s actual expense ratio.
First-page option: a lender-specific documentation path that reviews only the first page of each monthly statement. Many programs do not accept it.
P&L (profit and loss statement): a preparer-built summary of revenue and expenses. Some programs let it replace the expense factor entirely.
Commingling: mixing personal and business spending in one account, which can push a file into a different treatment.
LTV (loan-to-value): the loan amount as a percentage of the property’s value.
How the Math Moves
Every one of these paths starts the same way. The lender collects statements and screens the deposits. Transfers between your own accounts, loan proceeds, and one-time asset sales come out. Large or irregular deposits need an explanation. Kubera’s explainer on bank statement loans describes this screening and the averaging that follows.
Next, the lender averages eligible deposits across the months reviewed. Our program documents 12 months of statements, business or personal. Experian notes that bank statement loans generally use one to two years of statements, so expect the lender to ask for a full run, not a snapshot.
Then comes the step that separates the three options: how costs are removed.
- Default: average deposits times one minus the lender’s fixed ratio.
- CPA letter: average deposits times one minus your certified ratio.
- First-page: the lender’s own method, set by its sheet.
Same statements, different ratio, different income. That is the entire trick. A business with lean costs gains from the letter. A business with heavy costs loses.
Two other levers sit beside the expense method. Personal statements are often counted at or near full value, while business statements take the expense factor. And if you own less than the whole business, only your share counts.
When Default Is the Better Fit
The default is the better fit when your real expenses are at or above what the lender assumes. Restaurants, contractors, and e-commerce sellers are the usual examples, because payroll, materials, and inventory eat a large share of deposits. A letter would certify a ratio that lowers your income.
It also fits when you want a clean, simple file. No outside professional means no waiting on someone else’s calendar and no wording to negotiate. Some CPAs decline to certify a ratio at all, and the default avoids that problem.
Here is the part borrowers often miss. The default is not a trap. It is a baseline that was built for businesses that look average. If you are average, it treats you fairly.
On leverage, the default also keeps the file straightforward. On an owner-occupied cash-out of a primary residence or second home, programs in our network run up to 80% LTV with a fixed expense ratio. On a primary residence purchase or rate-term refinance, select lenders go up to 90% LTV, with stronger files earning the top of the range. Loan amounts run roughly $125,000 to $3,500,000, subject to lender guidelines and credit.
Prefer to skip bank statements altogether? Some self-employed borrowers have liquid assets instead. Asset depletion, which is reviewed against liquid assets rather than deposits, runs to about 80% LTV on a primary residence. Terms vary by lender guidelines, property type, leverage, credit profile, and full file review.
When a CPA Letter Is the Better Fit
A CPA letter is the better fit when your documented costs sit clearly below the lender’s default. Consultants, designers, and other low-overhead service owners are the classic case. Their deposits are mostly profit, and the default would treat part of that profit as spending that never happened.
The letter also makes sense when the income gap decides the loan. If the default leaves you short for the payment you want, a lower certified ratio can change the outcome. Kubera advises asking the lender first whether it accepts a preparer’s letter and in what format. That is the right order of operations. Do not pay for a letter before you know the lender will use it.
Know the tradeoffs before you start.
- It can lower your income. If actual costs exceed the default, the certified ratio gives you less income, not more. Whether a lender lets you fall back to the default after a higher ratio is on paper is a lender-guideline question. Ask before the letter is signed.
- Some programs set a floor. A few lenders will not credit a certified ratio below a stated minimum, however lean your books look.
- Leverage can shift. On an owner-occupied cash-out, the fixed-ratio path reaches up to 80% LTV, while an accountant-prepared ratio brings the ceiling to 75% LTV. More income can cost you a little leverage, so run both versions before committing.
- Cost and logistics. The preparer’s fee and time are yours to carry. Exact terms depend on the lender’s guidelines, property type, leverage, and a full review of the borrower’s file.
Programs usually name accepted signers. A CPA, an enrolled agent, or a tax preparer with a PTIN is the common list, though each lender sets its own.
Where First-Page Fits
The first-page option is the hardest of the three to pin down, and that deserves a straight statement. No industry standard defines it. It shows up as a proprietary documentation plan at some lenders, built around the first page of each monthly statement.
Why would a lender accept less than the full set? The honest answer is that it prices in the missing information through other terms, such as more cash down, lower leverage, or higher reserves. Underwriters like complete, consecutive statements because they reveal transfers, overdrafts, and odd deposits. Most programs expect every page of every statement for exactly that reason.
So treat first-page as a lender-specific streamlined path, not a third equal option. It may fit if you are certain your statements are clean and you want less paperwork. It is a poor fit if your account activity is messy, because the lender will want the pages you left out.
Sound narrow? It is. Confirm that a program accepts it before you build a plan around it. If you are weighing how personal and business accounts figure into a file, Lendmire’s article Personal vs Business Bank Statements for a Rental Loan covers that choice in depth.
Does Occupancy or Vesting Change the Choice?
It does, and this part decides which rules apply to your file. Occupancy is who lives in the property. An owner-occupied file, meaning a primary residence or second home, is a consumer mortgage, and the full set of consumer disclosure rules, including TRID, applies. A bank statement loan on a non-owner-occupied rental, including a short-term rental, is a business-purpose loan and is exempt from TRID. Keep the two regimes separate in your head.
The federal rulebook draws that line in its commentary: credit to acquire, improve, or maintain non-owner-occupied rental property is deemed business-purpose, regardless of unit count. See the CFPB’s Regulation Z commentary on business-purpose credit. Owner-occupied rentals follow different thresholds by unit count, which Compliance Alliance summarizes. A two-to-four-unit house where you live in one unit is a different animal than a pure rental.
Vesting, meaning how title is held, matters just as much. Bank statement programs underwrite a person, and many close in a personal name. Entity vesting is program-dependent, and loans to an LLC are possible only subject to lender program eligibility. DSCR loans are the usual route for LLC-titled rentals.
That brings up the cleanest contrast. A DSCR loan is reviewed primarily on property-level rental income covering the payment, subject to lender guidelines. Expense factors do not apply to it at all. A bank statement loan is reviewed on documented income under the applicable program, subject to lender guidelines. If you are an investor weighing both, Lendmire’s complete DSCR loans guide explains how the property-first test works.
On investment collateral, bank statement cash-out tops out around 75% LTV. Investment purchase leverage on bank statement documentation varies by lender, so treat any figure you hear as a starting point, not a promise. Investor-focused leverage guidance belongs on the DSCR side.
Consumer mortgage licensing for this lane covers 16 states, so availability depends on where the borrower and property sit.
What Gets Files Stuck
Most delays have nothing to do with the expense method. They come from the statements.
- Missing pages or months. A skipped page invites a request for it, and a gap in the run raises questions.
- Unexplained deposits. Large or irregular deposits need a written explanation or a paper trail.
- Commingled accounts. Mixed personal and business use can trigger a P&L requirement or a different treatment, depending on the program.
- Transfers counted as income. Moves between your own accounts do not count, so a bloated deposit total can shrink fast.
- Declining deposits. A recent downward slide can pull the average down or draw extra review.
Clean your files before you apply. Separate the accounts if you can, label the odd deposits, and download every page. Tax treatment can depend on how the funds are used and how the property is held; investors should keep clear records and speak with a qualified tax professional before relying on any deduction.
The Verdict
Here is how the referee calls it.
Choose the default if your costs are typical or heavy, or if you want the simplest file. It is the safe starting point, and it costs you no extra paperwork.
Choose the CPA letter if your books clearly show lean costs and the income gain matters to the loan. Get the lender’s acceptance first, and compare your income under both methods before you pay a preparer.
Treat first-page as a lender-specific convenience. Use it only if a program’s sheet allows it and your statements are spotless. For most borrowers, it is not the main decision.
One honest toss-up remains. A borrower with moderate costs may see only a small gain from a letter, and the letter’s cost and effort can outweigh it. Run both versions and let the numbers settle it.
Financing is arranged through select lenders in Lendmire’s wholesale network, subject to lender guidelines and credit approval. This is not a commitment to lend.
Frequently Asked Questions
Is a CPA letter required for a business bank statement loan?
No. Most programs run on a default expense factor if you provide nothing more than statements. The letter is optional and works by replacing that default with your certified ratio. Ask the lender whether it accepts one, and in what format, before you contact a preparer.
Can a CPA letter lower my qualifying income?
Yes. If your actual expenses are higher than the default, the certified ratio produces less income than the default would. Restaurants, contractors, and inventory-heavy sellers see this most often. Whether a lender allows a fallback to the default afterward is a guideline question, so settle it first.
Does a CPA letter replace my bank statements?
No. The letter only changes how costs are treated. You still submit the statement set, and the lender still screens deposits. The letter also does not approve the loan or settle credit, reserves, or property review.
Is the first-page option available to everyone?
No. It is a lender-specific path, not an industry standard, and many programs expect every page of every statement. Check the program sheet before relying on it. If a lender accepts it, expect the file to be weighed on other terms too, such as cash down or reserves.
Do expense factors apply to DSCR loans?
No. A DSCR loan tests the property’s rent against its monthly obligation, so no business expense factor enters the picture. A bank statement loan tests your deposits instead. Investors often use DSCR for rentals and bank statements for a primary residence, subject to lender guidelines.
About Lendmire
Lendmire (NMLS# 2371349), a non-QM mortgage broker serving investors in 41 markets including Washington, D.C., helps structure DSCR scenarios commonly evaluated around a property’s rental income rather than personal income paperwork, subject to lender guidelines. A Scotsman Guide Top Mortgage Workplace in 2025 and 2026, Lendmire places loans through wholesale investor lenders and is not a direct lender.
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References
1. Kubera: Bank statement loan explainer
2. Experian: What is a bank statement loan?
3. CFPB: Regulation Z commentary on business-purpose credit
4. Compliance Alliance: Regulation Z and investment properties
This article is part of Lendmire’s self-employed mortgage guides — full qualification details, guidelines, and scenarios live on the program page.
Related reading: Can You Use Personal Bank Statements for a Mortgage? · Default Factor vs CPA Letter vs First-Page Statements for a 1099 Earner · How to Qualify on a CPA P&L Only With No Bank Statements
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.