The Quick Read: You prepare 12 months of clean bank statements, decide whether a CPA letter will document a lower expense ratio than the lender’s default, and then apply for a cash-out loan sized to whichever is smaller: the amount your income supports or the amount your home equity supports. The letter is a lender guideline, not a legal requirement, and it only helps when your real expenses sit well below the default factor.
- Qualifying income comes from averaged deposits over 12 months, then reduced by an expense factor on business accounts.
- A CPA letter can document a lower actual expense ratio, but only if it comes from an eligible third party.
- On an owner-occupied primary residence, cash-out typically runs up to 80% LTV with a fixed expense ratio, and up to 75% LTV when the ratio is prepared by an accountant. The accountant-prepared route carries the lower ceiling, so the letter is a trade-off rather than a free upgrade.
- A second home cash-out runs up to 75% LTV, and an investment property cash-out tops out around 75% LTV.
- Income and equity each cap the loan. The tighter one controls how much cash you can take. Every figure here varies by lender and program — guidelines, property type, leverage, and credit profile all apply.
Self-employed owners often see a tax return and a bank account tell different stories. Write-offs, depreciation, and a heavy expense load shrink the income on the return. The bank statement route looks at what actually landed in your accounts. This guide walks through the whole process, from deposits to the CPA letter to the application.
What Is a Bank Statement Cash-Out Refinance?
A bank statement cash-out refinance replaces your current mortgage with a larger one and pays you the difference in cash. It is reviewed on documented income under the applicable program, subject to lender guidelines. The documentation is 12 months of business or personal bank statements instead of tax returns.
It fits sole proprietors, S-corp and LLC owners, 1099 contractors, and anyone whose returns understate real cash flow. It covers cash-out and rate-and-term refinances. Occupancy matters. Primary residences, second homes, and investment properties all have different leverage ceilings, which come up below.
This is not a no-doc loan. It is a different-documentation loan. The lender still verifies your income with third-party records, and bank statements are exactly that. Federal ability-to-repay rules require income and assets to be verified with reasonably reliable third-party records on consumer loans, and financial institution records are on the accepted list.
Who Fits and Who Doesn’t
This route tends to fit you if:
- Your deposits are steady and clearly business income.
- Your tax returns show far less income than your accounts do.
- You have been self-employed long enough to show a track record.
- Your business and personal money are kept reasonably separate.
It tends to fit poorly if your deposits are falling, seasonal without a pattern, or tangled up with personal transfers. It also fits poorly if your returns already show enough income. In that case a conventional loan may cost less. Self-employment does not relax the lender’s requirements on credit, reserves, or property.
How Lenders Turn Deposits Into Income
Underwriters average your eligible deposits over the statement window, then apply an expense factor if the account is a business account. The result is qualifying monthly income. Here is how it runs, step by step:
1. Pick the statement type. Business statements get an expense factor. Personal statements generally count deposits without one, but they draw different scrutiny.
2. Pick the window. Across our wholesale network the standard documentation is 12 months of statements. A longer window can smooth out seasonality. A shorter one reflects your recent trend.
3. Clean the deposits. Underwriters strip out transfers between your own accounts, loan proceeds, refunds, and other non-income items.
4. Average what is left. The remaining deposits are averaged across the window and adjusted for your ownership share.
5. Apply the expense factor. Qualifying income is roughly the average eligible deposits times the share you keep after expenses.
The expense factor is where files are won or lost. Each program sets its own default, and the exact factor varies by lender, so never count on a universal formula. The default is a flat percentage applied no matter what your business actually spends. If your real costs are lower than that default, you leave qualifying income on the table. That is the gap a CPA letter closes.
Here is a hypothetical to show the logic, using no real figures. Say two borrowers show identical deposits. One has a heavy cost structure, such as materials, subcontractors, and inventory. The other runs a lean consulting practice with few costs. Under a flat default, both get the same income haircut. Under a certified ratio, the consultant’s qualifying income rises meaningfully, while the heavy-cost borrower gains little or nothing. Same deposits, very different outcomes.
Do You Need a CPA Letter?
You do not need one to apply. No federal rule requires it. It is a lender and program practice, and it is optional. Get one only if it can document a real expense ratio lower than the default.
| Situation | CPA letter helps? | Why |
|---|---|---|
| Lean business, low real costs | Usually yes | Raises qualifying income |
| Heavy costs near the default | Rarely | Little to gain |
| Personal statements only | Usually no | No factor to adjust |
| Messy, commingled accounts | Not by itself | Hygiene is the issue |
| Income already strong | No | Cost and time wasted |
The letter has a price in money and in time. It only pays off when the honest ratio is meaningfully below the default. So estimate first. Add up your actual business costs over the same 12 months as your statements and compare them to the deposits. If the honest ratio is close to the default or worse, skip the letter and save the fee.
What a Strong CPA Letter Contains
The letter has to come from an eligible third party. That means a CPA, or an equivalent such as an enrolled agent or a qualifying tax preparer, depending on the program. You cannot write it yourself. Self-certification does not move the number, and neither does a self-prepared spreadsheet.
Programs differ on exact wording, so your loan officer should confirm the lender’s requirements before you ask. In general, a strong letter covers:
- The preparer’s name, license or credential, and contact details.
- How long the preparer has known you and your business.
- Your business name, type, and ownership percentage.
- Confirmation of how long you have been self-employed.
- The actual expense ratio for the same period as your statements.
- A signature and date.
Two limits apply. The letter does not replace your bank statements. It also does not guarantee approval. Some CPAs also refuse to sign broad assurances, so ask for a narrow statement of fact that they can stand behind.
How to Ask Your Accountant
Approach your CPA before you apply, not after. The letter’s period needs to line up with your statement window, so you want that decision made early. Bring your 12 months of statements, your profit-and-loss statement if you keep one, and your most recent returns.
A short request works best: “I’m applying for a mortgage using bank statements. The lender will accept a letter that states my business expense ratio for the same 12-month period. Can you confirm my ownership share, how long I have been in business, and my actual expense percentage if your records support it?”.
If your CPA declines, you have fallbacks. You can accept the lender’s default factor. You can ask a different eligible preparer who knows your books. Or you can consider a different structure, covered below.
How the Letter Interacts With Cash-Out Limits
Your cash-out is capped twice, and the tighter cap controls. The first cap is income: do your qualifying deposits support the new, larger payment? The second is equity: how much of the appraised value will the lender allow you to borrow against?
A certified ratio can raise your income cap. It does not raise your equity cap. And the ceiling itself can shift with the ratio method. On an owner-occupied primary residence, cash-out typically runs up to 80% LTV with a fixed expense ratio, and 75% with an accountant-prepared ratio. The accountant-prepared route is the lower ceiling, never the higher one. So there is a real trade-off: a certified ratio may lift your income but trim your leverage.
| Property | Cash-out ceiling (typical) | Notes |
|---|---|---|
| Primary residence, fixed ratio | Up to 80% LTV | Subject to loan size and credit |
| Primary residence, accountant-prepared ratio | Up to 75% LTV | Lower ceiling |
| Second home | Up to 75% LTV | By loan size and credit |
| Investment property | Around 75% LTV | Business-purpose file |
The 90% figure you may see for primary residences applies to purchase and rate-and-term loans, not cash-out. Investment purchase leverage on bank statement documentation varies by lender. These are select wholesale-network guidelines, and every file is underwritten individually.
Picture an owner with a lean practice and plenty of equity. If income is the tight cap, the letter helps. If equity is the tight cap, the letter changes nothing, and the fee was wasted. Know which limit you are hitting before you pay for anything.
Which Rules Apply to Your Property
Occupancy decides how your loan is treated. Owner-occupied files, meaning a primary residence or second home, are consumer mortgages, so TRID disclosure rules apply. A bank statement loan on a non-owner-occupied rental, including a short-term rental, is business-purpose and exempt from TRID.
The line is narrower than many investors assume. Per the CFPB’s Regulation Z guidance, credit to buy, improve, or maintain a non-owner-occupied rental is deemed business purpose. For an owner-occupied rental, acquisition credit qualifies only above 2 units, and improvement credit only above 4. If you live in a duplex, you are generally in consumer territory.
Purpose matters too. Using rental cash-out proceeds for personal spending can raise questions about the loan’s business-purpose status. Keep the use of funds consistent with how the loan was structured. Because bank statement loans on rentals are business-purpose, a lender chooses its own documentation standard rather than following a federal one. That is why guidelines differ so much across programs.
The Application, Step by Step
1. Audit your deposits. Mark transfers, loan proceeds, and refunds. Write a short explanation for any unusual deposit.
2. Estimate your real expense ratio. Compare actual costs to deposits for the full window.
3. Decide on the letter. If the honest ratio beats the default by a meaningful margin, ask your CPA.
4. Gather documents. Statements, ID, proof of self-employment, mortgage statement, insurance, and property details.
5. Compare programs through a broker. Lendmire is a mortgage broker that works with a multi-state network of wholesale cash-out refinance lenders. The best program for your situation depends on property type, credit profile, leverage need, and documentation. A broker can match the scenario to the program.
6. Submit and underwrite. The loan is sized to the lender’s leverage limit and the appraised value. Credit, reserves, and seasoning are program-specific.
7. Complete title, insurance, and payoff. Business-purpose documentation is added on rental files, and the existing lien is paid off.
Loan amounts across the network run roughly $125,000 to $3,500,000. Reserves are commonly around 6 months of the housing payment.
Document Checklist
| Document | Why it matters | Common pitfall |
|---|---|---|
| 12 months of statements | Basis for income | Missing pages |
| Large-deposit explanations | Separates income from transfers | No paper trail |
| Proof of self-employment | Shows track record | Gaps in history |
| CPA letter (optional) | Documents lower ratio | Wrong period or preparer |
| Mortgage and insurance records | Payoff and coverage | Outdated figures |
Mistakes That Stall or Sink Files
Commingled accounts are the classic problem. When personal and business money mix, underwriters cannot tell what is income, and eligible deposits shrink. Declining or erratic deposits read as risk even when the average looks fine. A letter whose period does not match the statement window gets set aside. And a letter from a non-eligible signer does nothing.
Another common mistake is chasing the letter without checking the equity cap. A third is assuming the letter overrides the lender’s other standards. It does not touch credit, reserves, or property requirements.
If You Can’t or Won’t Get a Letter
You have options. A DSCR loan is a separate investor program reviewed primarily on property-level rental income covering the payment, subject to lender guidelines. It skips personal-income analysis and fits a rental whose rent covers its payment comfortably. Lendmire’s complete DSCR loans guide explains how that separate program works if you want to compare it with the bank statement route.
A profit-and-loss-only program is another alternative-documentation option. Asset-depletion qualifying, which uses liquid assets rather than deposits, is a further route, though its leverage limits differ from the cash-out ceilings described earlier and depend on the program. And if your tax returns already show enough income, a conventional loan may be cheaper. Non-QM pricing is generally higher than agency pricing.
Two things are easy to confuse with the CPA letter. It is not a substitute for statements, and it is not a way around the standards of the lender or program you choose.
Key Terms Defined
Qualifying income: The monthly income a lender counts after cleaning and averaging your deposits and applying the expense factor.
Expense factor: The percentage of business deposits assumed to go to costs, which reduces the income a lender counts.
CPA letter: A signed statement from an eligible third-party preparer that documents your actual expense ratio and business details.
Non-income deposit: Money that lands in your account but is not earnings, such as transfers between accounts, loan proceeds, and refunds.
LTV: Loan-to-value, the loan amount as a percentage of the property’s appraised value.
Business-purpose loan: A loan made primarily for business or commercial use, such as a non-owner-occupied rental.
Frequently Asked Questions
Is a CPA letter required for a bank statement cash-out refinance?
No. It is optional and set by lender guidelines, not by federal law. It only helps if it documents a real expense ratio below the default factor. If your costs are near the default, the letter adds expense without adding income.
Who can sign the letter?
A CPA is the usual choice. Some programs also accept an enrolled agent or a qualifying tax preparer. The signer must be a third party, so the letter cannot come from you, and acceptable signers vary by lender.
Can I qualify without traditional personal-income documentation, W-2s, or pay stubs?
Yes, on programs that qualify on documented income through 12 months of bank statements. You still document your income. It is just verified through deposits rather than returns, subject to lender guidelines.
Does a CPA letter guarantee approval or a higher loan?
No. It can raise qualifying income, but credit, reserves, property value, and leverage still apply. Your equity can also cap the loan before income does, and a certified ratio can come with a lower leverage ceiling.
What if my CPA won’t write the letter?
Accept the lender’s default factor, ask another eligible preparer, or consider a different structure such as a DSCR loan on a rental. A broker can show you which route fits your deposits and property.
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.
A deeper walk-through of investment-property equity extraction lives in Lendmire’s guide to cash-out refinance on an investment property.
About Lendmire
Lendmire (NMLS# 2371349) is a mortgage broker licensed for consumer lending in 16 states. Bank statement, P&L-only, 1099-only and asset-based mortgages for self-employed and high-net-worth borrowers are arranged through wholesale lenders on primary residences, second homes and investment properties; every file is underwritten by the lender under its program guidelines. 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. 12 CFR 1026.43, via Cornell LII
2. CFPB, Regulation Z 1026.3 exempt transactions
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
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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.