The Quick Read: Not directly: a CPA letter does not approve a bank statement cash-out refinance, but it can raise the income figure the lender builds from your business deposits, and approval still turns on debt-to-income, credit, equity, reserves, and the property you are borrowing against. The letter is a supporting document. It is usually optional, and it matters mainly when you qualify on business-account statements.
- It helps on business statements. It adds little on personal-statement programs.
- It can also hurt if your real expenses run higher than the default.
- Cash-out has a second limit, equity, which a letter does not touch.
- Rental properties often fit a different loan type better.
What Does a CPA Letter Actually Do?
A CPA letter changes one number: the share of your business deposits the lender counts as income. Everything else in the file stays the same.
On a business-statement file, the underwriter totals eligible deposits and then subtracts an expense factor, because deposits are revenue, not profit. When no one documents your real expenses, the lender uses its default. A practitioner explainer on bank statement loan mechanics reports 50% as a common default and notes that the factor drops only when a third party documents it. A self-made spreadsheet usually does not move the number.
Across the wholesale network Lendmire works with, lenders treat the letter as support for a lower factor. They do not treat it as a decision. Underwriters still run the full file after they count the income.
Here is the can-and-cannot version:
| The letter can | The letter cannot |
|---|---|
| Document a lower expense ratio | Guarantee or force an approval |
| Verify years of self-employment | Replace the bank statements |
| Support an ownership percentage | Fix weak credit or thin equity |
| Raise qualifying income | Remove debt-to-income limits |
How Does a Bank Statement Cash-Out Calculate Your Income?
The lender turns 12 months of deposits into a monthly income figure. The program can use business or personal statements. Qualification runs on documented income under the applicable program, subject to lender guidelines.
The steps look like this:
1. Choose the statement type. Business or personal accounts, over a 12-month window on the programs Lendmire places.
2. Scrub the deposits. The underwriter removes transfers between your own accounts, loan proceeds, refunds, and other credits that are not income. One-time or unusual deposits are excluded or need an explanation.
3. Average what is left. Eligible deposits are divided by the number of months.
4. Apply the expense factor. On business statements, qualifying income equals average deposits times one minus the factor. Personal-statement programs generally count eligible deposits without a factor.
5. Test the result. Income is checked against your debt-to-income, and the loan amount is checked against the appraised value.
A seasonal business shows why the window matters. A strong summer and a weak winter average out, but a clear downward trend in recent months can pull the figure down or draw questions.
How Much Can a CPA Letter Change Your Income?
It can change qualifying income a lot, in either direction. The table below uses modeled assumptions, not market data. It compares the same deposits under three expense factors.
| Scenario | Share of deposits counted | Versus a 50% default |
|---|---|---|
| Default factor of 50% | About half | Baseline |
| Documented factor of 30% | About 70% | About 40% more income |
| Documented factor of 60% | About 40% | About 20% less income |
Lean businesses gain the most. A consultant, a designer, or a small professional practice with few costs often documents a ratio well below the default. A contractor with heavy materials, payroll, and equipment costs may find the real ratio sits at or above the default.
That is the break-even test. Ask your accountant for a rough read of your true expense ratio before you order anything. If it is clearly below the default, the letter is worth asking for. The cost is generally modest compared with the income difference. If it is at or above the default, skip it.
Where Does Cash-Out Add Its Own Limits?
Cash-out adds an equity limit that sits beside the income limit. Your income decides whether the payment fits. Your equity decides how much cash the property can release. A CPA letter helps only the first.
Here is how leverage works on a cash-out for the lenders in Lendmire’s network, subject to lender guidelines:
- Primary residence: up to 80% LTV on a cash-out with a fixed expense ratio.
- Primary residence with an accountant-prepared ratio: up to 75% LTV on a cash-out.
- Second home: up to 75% LTV on a cash-out, by loan size and credit.
- Investment property: tops out around 75% LTV on a cash-out. Terms depend on the lender’s guidelines, the property type, the leverage, and a full review of the credit profile.
(LTV, or loan-to-value, is the new loan divided by the appraised value.)
Read that primary-residence pair twice. A letter can raise income, but the accountant-prepared route carries the lower ceiling, five points below the fixed-ratio route. So the choice is sometimes a tradeoff. If income is the tight spot, the letter may be the better path. If equity is the tight spot, the fixed ratio may let you pull more cash. Run both versions before you commit.
Loan sizes generally run from roughly $125,000 to $3,500,000. Lenders commonly want reserves around six months of the housing payment. Cash-out proceeds can count toward reserves on some programs but not others, so confirm that early.
Do You Need the Letter?
Often you do not. This table covers the common situations:
| Your situation | Does the letter help? |
|---|---|
| Personal statements, no factor applied | Rarely |
| Business statements, lean costs | Yes, often a large gain |
| Business statements, heavy costs | Usually no, and it can hurt |
| Business under two years old | Maybe, to verify history |
| Rental property | Not the main lever |
If your business deposits run through personal accounts, check the program’s rules. Some guidelines treat personal statements that carry business operations as business statements, so an expense ratio is applied anyway.
When Does a CPA Letter Fail or Backfire?
The letter fails when it leaves out the one thing underwriters need, which is a specific percentage. In one public filing, the lender kept the standard factor because the letter did not state an expense percentage. A CPA-documented factor can also lower qualifying income and push debt-to-income above a program limit.
Treat these as warnings. Common problems include:
- No percentage. The underwriter falls back to the default.
- A higher ratio than the default. A CPA may certify costs above the default, which cuts income and can break a debt-to-income limit.
- A period mismatch. The letter should cover the same window as your statements.
- A stale letter. Many lenders want a recent date.
- Numbers that do not line up. The letter, the statements, and any returns should tell the same story.
Why do lenders insist on third-party support at all? Bank statement loans are non-QM, meaning they sit outside the standard mortgage box, but the federal Ability-to-Repay rule still applies. The CFPB’s small entity compliance guide says a creditor must verify the income it relies on using reasonably reliable third-party records. It also says self-employment is an acceptable type of employment to consider. A letter from an independent professional is one way to supply that support.
Also note that the letter is not always about expenses. A CPA letter can verify years of self-employment, certify an expense ratio, or support an ownership percentage. Those are different jobs, so ask the loan officer which one the program wants.
What Should the Letter Contain?
A useful letter is specific and signed by someone other than you. Self-certification is not accepted.
Ask your accountant to include:
- The business name exactly as it appears on the statements.
- The period covered, matching your statement window.
- A specific expense percentage, not a range.
- A statement that the preparer prepares the business’s tax returns, if the program asks for it.
- The preparer’s credentials, signature, and date.
A short request to your accountant works well. Tell them your lender needs a letter stating your business expense ratio for the period your bank statements cover. Ask them to state the percentage, the period, and their credentials.
Keep in mind that a CPA will not guarantee income or sign a broad comfort letter. Ask only for what the preparer can support.
What If Your CPA Will Not Sign?
You have options. Many programs accept a letter from an enrolled agent or a qualifying tax preparer, not only a CPA. If no one will certify a ratio, the lender uses its default factor, and the file can still work if the numbers hold. You can also compare a personal-statement program, which generally counts eligible deposits without a factor, though the program’s leverage and credit terms may differ.
A broker can sort these options by file. The programs differ across lenders, and the one that fits depends on your deposits, credit profile, equity, and the property.
What About a Rental Property?
For a rental, a bank statement loan is often not the first tool. Occupancy decides which one applies. An owner-occupied cash-out on a primary residence or second home is a consumer mortgage, so standard consumer disclosure rules apply. A bank statement loan on a non-owner-occupied rental, including a short-term rental, is a business-purpose loan and is exempt from those consumer disclosure rules.
A bank statement loan tests your deposits, so every financed property stacks on the same personal income. A DSCR loan, meaning a rental investor loan that tests the property’s rent against its payment, qualifies primarily on property-level rental income covering the payment, subject to lender guidelines. DSCR files generally stay off your personal debt-to-income. A CPA letter helps only the bank statement side. Lendmire’s complete DSCR loans guide explains how that path works.
HousingWire’s non-QM guide reports that bank statement loans make up roughly a third of non-QM volume, and DSCR loans a little under 30%. Both are established lanes. Which one fits you depends on your income and the property.
For a rental, bank statement leverage on a cash-out tops out around 75% LTV. Investment purchase leverage on bank statement documentation varies by lender.
Key Terms Defined
Expense factor: the share of business deposits a lender subtracts to estimate real costs before counting income.
Non-QM: a mortgage that falls outside standard qualified-mortgage rules, often because income is documented a different way.
LTV (loan-to-value): the loan amount divided by the property’s appraised value.
Debt-to-income (DTI): your monthly debts divided by your qualifying monthly income.
Reserves: liquid savings, measured in months of housing payments, that you hold after closing.
Enrolled agent: a tax professional federally authorized to represent taxpayers, who can often sign an expense letter.
Pre-Application Checklist
- Gather 12 months of statements for the accounts the program will use.
- Estimate your real expense ratio with your accountant.
- Request a letter only if it likely beats the default.
- Match the letter’s period and business name to the statements.
- Confirm your equity and the cash-out LTV ceiling for your occupancy type.
- Plan for reserves of around six months of the housing payment.
Frequently Asked Questions
Is a CPA letter required for a bank statement cash-out refinance?
Usually not. It is optional on most programs and matters mainly on business statements, where it can document a lower expense factor than the lender’s default. Some programs also ask for a letter to verify ownership or years in business, so confirm what yours requires.
Does a CPA letter guarantee approval?
No. It supports one number, qualifying income. Credit, debt-to-income, equity, reserves, and the property still decide the outcome, subject to lender guidelines and underwriting review.
Can I write the letter myself?
No. The letter has to come from an independent preparer, such as a CPA, an enrolled agent, or a qualifying tax preparer. A self-made letter or spreadsheet generally does not change the lender’s factor.
Does the letter change how much cash I can take out?
It changes the income side only. The cash-out amount is also capped by LTV. On a primary residence, the fixed-ratio route generally reaches up to 80% LTV, and the accountant-prepared ratio route generally reaches up to 75%, subject to lender guidelines.
Does the letter matter on personal bank statements?
Rarely. Personal-statement programs generally count eligible deposits without an expense factor, so there is little for the letter to change.
Next Step
If you are self-employed and want to see how the numbers work, Lendmire can help you compare bank statement loan options based on your deposits, the property, credit profile, leverage, and your goals. Owner-occupied bank statement files are available only in the 16 states where Lendmire holds consumer mortgage licensing. Programs and terms vary by lender, and nothing here is a commitment to lend.
For the mechanics of pulling equity out of a rental property, see Lendmire’s guide to cash-out refinance on an investment property.
About Lendmire
Lendmire is a mortgage brokerage (NMLS# 2371349) licensed for consumer mortgage lending in 16 states, arranging bank statement and other alternative-documentation mortgages — P&L-only, 1099-only and asset-based paths — through a wholesale lending network. Eligibility is determined by the lender on each file. Scotsman Guide named Lendmire a Top Mortgage Workplace in both 2025 and 2026.
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Informational only. Not a Loan Estimate, approval, or commitment to lend. Program availability and eligibility are subject to lender guidelines, credit approval, property review, and underwriting.
References
1. StatementsReady: what is a bank statement loan
2. SEC EDGAR ABS-15G due-diligence filing
3. CFPB ATR/QM Small Entity Compliance Guide
4. HousingWire non-QM loans guide
This article is part of Lendmire’s self-employed mortgage guides — full qualification details, guidelines, and scenarios live on the program page.
Brandon Miller
Founder & CEO, Mortgage Loan Originator, Lendmire LLC
- Mortgage Loan Originator · NMLS# 1129696 · Verify on NMLS Consumer Access
- North Carolina Real Estate Broker · License# 343312 · Verify on NCREC
- North Carolina Insurance Producer · License# 19053198 · Property, Casualty, Life, Health · Verify on NAIC SBS
- Lendmire LLC · Firm NMLS# 2371349 · Verify firm licensure
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.