A CPA letter for a mortgage is a brief attestation from a licensed CPA confirming that a borrower is self-employed, the business is currently active, and the income documentation is accurate. Your accountant may call it a comfort letter — same document, different name, and the difference in wording matters more than it sounds. Most lenders require it on bank statement and P&L loan programs. It does not replace a profit and loss statement and does not by itself prove income.
What is a CPA letter for a mortgage?
A CPA letter — also called a comfort letter, a self-employment verification letter, or simply an accountant letter — is a one- to two-page document signed by a licensed Certified Public Accountant that confirms three things:
- The borrower is self-employed (sole proprietor, LLC member, S-corp owner, or partner)
- The business is currently active and operating
- The CPA has professional knowledge of the borrower's business — typically as their accountant or tax preparer
It is not a financial statement and does not by itself prove income. It supports the income documentation — bank statements, a P&L, or tax returns — already submitted. Without this attestation, underwriters have no professional confirmation that the business is real and ongoing.
Comfort letter vs. verification letter — why the name matters
Ask a loan officer and you get "CPA letter." Ask an accountant and you often get "comfort letter." They are usually the same piece of paper, but the two names carry different expectations, and that gap is where most of these requests fall apart.
"Verification letter" describes what a lender actually needs: confirmation of facts the CPA already knows from doing your books. Business exists. You own this share of it. It was operating as of this date. The engagement is tax prep, started in this year.
"Comfort letter" describes what the phrase sounds like it promises: that the accountant is comfortable with your finances generally — that the business is healthy, the income will continue, you can afford the payment. No CPA will sign that, and no competent underwriter is asking them to.
If your accountant hesitates, it is often because the request landed on their desk using the second meaning. Reframing it as a verification of facts, with the specific facts listed, resolves a surprising number of refusals before they happen. The seven elements in the table below are all verifiable facts. None of them is an opinion about your future.
The three kinds of CPA letter
Lenders use the phrase loosely for three different documents. Knowing which one your file needs saves a round trip, because a CPA who prepares the wrong one has to start over.
| Type | What it does | When it is used |
|---|---|---|
| Existence and status letter | Confirms the business is real, active, and that the CPA has a professional relationship with it. States no figures. | The most common request. Conventional files with short self-employment history, and most bank statement programs. |
| Expense ratio letter | States the business's actual expense percentage so the lender can apply a real figure instead of a program default. Sometimes called an expense factor letter. | Business bank statement loans, where the default ratio is costing you qualifying income. |
| CPA-prepared P&L | A full profit and loss statement prepared and signed by the CPA. A financial document, not an attestation. | P&L Only programs, and files where deposits alone do not tell the story. |
| Business funds letter | Confirms that withdrawing a stated amount for the use of business funds in a down payment will not harm the operation of the business. | Any file where down payment or reserves come out of a business account rather than a personal one. |
The last one catches people out. If your down payment is sitting in the business account, most lenders want a CPA to confirm that taking it out does not damage the business — separate from anything about your income. Ask for it at the same time as the others rather than discovering it in underwriting, because it is the same accountant and the same phone call.
These stack rather than compete. A borrower on a business bank statement program may need an existence letter and an expense ratio letter, and may be better served by a CPA-prepared P&L than by either. Ask your loan officer which the program requires before you ask your accountant for anything — the request is far easier to answer when it names the document.
When does a lender require a CPA letter?
CPA letters are most commonly required in four situations:
- Business bank statement loans. When a borrower uses business deposits to qualify, the lender applies an expense ratio to gross deposits to arrive at qualifying income. A CPA-prepared P&L or CPA letter can reduce that ratio and increase the income the lender counts.
- P&L Only programs. Lenders offering P&L-only qualification (no tax returns, no bank statements) require the P&L to be prepared and signed by a CPA, EA, or licensed tax professional.
- Conventional loans with short self-employment history. Fannie Mae and Freddie Mac guidelines require a letter from a licensed CPA confirming the business was in operation within 60 days of the loan closing date when the self-employment history is less than two years old.
- Complex self-employment structures. When income comes from multiple entities or includes partnership income, lenders may require a CPA letter to confirm ownership percentages and active status.
What must a CPA letter say for a mortgage?
The table below shows every required element. A letter missing any of these will typically be rejected at underwriting and need to be reissued.
| Required element | What to include |
|---|---|
| CPA credentials | Full name, license number (CPA, EA, or CTEC credential), firm name, address, phone, and email |
| Borrower identification | Borrower's full legal name as it appears on the loan application |
| Business identification | Business name, legal structure (LLC, S-corp, sole prop, partnership), and ownership percentage |
| Business start date | Date established, or the start of the CPA's professional engagement with the business |
| Active status attestation | Explicit statement the business is currently active with no known plans to close |
| Basis for professional knowledge | Nature of engagement: tax preparation, bookkeeping, periodic review, or consulting |
| Signature and date | Original or electronic signature, printed name, license number, and date — within 120 days of closing |
Some lenders add a requirement that the letter state the CPA was not engaged solely for the purpose of the mortgage application. Ask your loan officer whether your lender requires this language.
Sample CPA letter for a mortgage application
The sample below shows the standard format. Fill in all bracketed fields before submitting — do not submit a template with placeholders.
[CPA Firm Letterhead]
[CPA Name], CPA | License No. [XXXXX] | [Firm Name]
[Address] | [Phone] | [Email][Date]
Re: Self-Employment Verification — [Borrower Full Name]
To Whom It May Concern:
I am writing to confirm that [Borrower Full Name] is self-employed as the [owner / member / shareholder] of [Business Name], a [LLC / S-corporation / sole proprietorship] established on [Date]. I have served as the [tax preparer / accountant / bookkeeper] for this business since [Year].
To the best of my professional knowledge, [Business Name] is currently active and in operation. I am not aware of any plans to close, sell, dissolve, or substantially reduce the operations of this business.
This letter is provided for mortgage lending purposes at the borrower's request and is based on information available to me in my professional capacity. It should not be construed as a guarantee of future income or business performance.
Sincerely,
[CPA Signature]
[Printed Name], CPA
License No. [XXXXX]
[Date]
This sample is for illustration only. Consult your loan officer and CPA for the exact format your lender requires.
Who can sign a CPA letter for a mortgage?
The signer must be a licensed financial professional with direct knowledge of the borrower's business. Acceptable signers vary by program:
- CPA (Certified Public Accountant): Accepted on all programs that require a letter. Always the safest choice.
- EA (Enrolled Agent): Accepted on most non-QM programs. An EA is federally licensed by the IRS and their attestation holds similar weight to a CPA's for most non-QM lenders.
- CTEC (California Tax Education Council): Accepted by some California non-QM programs. Outside California, an EA is the closer equivalent.
- Not a bookkeeper or financial planner: The letter must come from a credentialed tax professional. A bookkeeper, financial advisor, or business attorney cannot substitute unless the lender specifically permits it.
If your regular accountant is a bookkeeper rather than a CPA or EA, ask your loan officer for a referral. Many non-QM lenders maintain relationships with CPAs who routinely prepare letters and P&L statements for loan files.
How a CPA letter affects your bank statement loan qualifying income
When a self-employed borrower uses business bank statements to qualify, the lender applies an expense ratio to gross deposits. That ratio reduces the income counted toward qualification. The ratio varies by lender and program.
With a CPA-prepared P&L or CPA letter, some non-QM programs reduce that ratio to as low as 10%. The example below shows what qualifying income looks like under one of those programs:
| Scenario | Monthly deposits | Expense ratio | Qualifying income |
|---|---|---|---|
| With CPA letter (program example) | $20,000 | 10% | $18,000/mo |
For illustration only. Not a commitment to lend. Expense ratios vary by lender and program. Rates and terms subject to change and qualification. 1st Nationwide Mortgage Corporation, NMLS #1281. Equal Housing Lender.
Under programs that accept a CPA-reduced expense ratio, a $20,000/month deposit base qualifies as $18,000/month of income — directly raising the loan amount you can support. For borrowers on the edge of qualifying, this is often the deciding factor.
The 10% expense ratio is program-specific and requires the CPA to have prepared both the letter and a current-year profit and loss statement. Not every lender offers this reduction. Confirm the specific expense ratio and requirements with your loan officer before requesting the letter from your CPA.
Borrowers who use personal bank statements (12 or 24 months of personal deposits) do not need a CPA letter. Personal bank statement programs apply a 0% expense ratio to deposits by default — there are no business expenses to factor out.
Ready to review your bank statement loan options? See the full bank statement loan program for eligibility, deposit requirements, and expense ratio options — or call (833) 350-9185 for a same-day scenario review.
Business or personal bank statements — and what the letter has to address
This is the decision that moves the number most, and it gets made badly more often than any other part of a self-employed file. Which account you qualify on changes what the CPA letter needs to say.
Personal statements. The lender generally counts deposits that came from the business into your personal account, with no expense ratio applied, because the money already cleared the business. The arithmetic is simpler and the CPA letter is usually the plain existence-and-status version. The limit is obvious: if you leave most of your earnings in the business, your personal deposits understate what you make.
Business statements. The lender takes gross deposits and applies an expense ratio to estimate what is actually yours. That ratio is where the CPA letter earns its keep. A program default can be far above a lean business's real expenses, and the difference comes straight out of qualifying income. A CPA letter or CPA-prepared P&L stating the true expense percentage is what gets the real figure used.
Which one fits
- You pay yourself regularly and consistently — personal statements usually win, and the letter stays simple.
- You retain earnings in the business — business statements, and the expense ratio letter matters a great deal.
- Low-overhead business (consulting, design, most service work) — business statements with a CPA expense ratio letter, because the default ratio penalises you hardest here.
- Heavy overhead (contracting with materials, trucking, inventory) — the default ratio may already be close to accurate; run both before paying for a letter.
- Co-mingled accounts — expect questions either way. A CPA letter explaining the arrangement helps more than it does in a clean file.
Two mistakes are common enough to name. Choosing the account before anyone has run the numbers both ways, which is a coin flip on the largest variable in the file. And asking the CPA for a letter about the wrong account, which means paying for the letter twice.
If your CPA declines to write the letter
This happens often, it is not a sign that anything is wrong with your business, and it is usually solvable in one conversation. Accountants decline for reasons that have nothing to do with you.
Why they decline
- The request reads as an opinion on your finances. Lender request forms sometimes ask the CPA to confirm the business is solvent, the income will continue, or the borrower can afford the payment. Those are forecasts, and no accountant will sign one. Professional guidance in the accounting field warns members specifically about third-party requests written this way.
- They did not do the work the letter implies. An accountant who prepares your tax return has not audited or reviewed your financial statements. A letter that sounds like assurance about figures they never examined is a liability they are right to refuse.
- Their insurer or firm policy forbids it. Some firms will not issue these at all, and some charge for them because the exposure is real.
- They are not a CPA. Plenty of competent tax preparers are not licensed CPAs, and some lender programs name the credential specifically.
What to do instead
- Narrow the request to facts. Send your accountant the specific list — business active as of a date, your ownership percentage, the basis and start of their engagement. Most refusals are to the open-ended version of the question, not the specific one.
- Let them write their own wording. Lender templates are often the problem. Underwriters accept a CPA's own language when it covers the required elements, and a letter the CPA drafted is a letter the CPA will sign.
- Ask about an enrolled agent or licensed tax preparer. Several programs accept an EA or CTEC-credentialed preparer. Confirm with your loan officer before assuming the credential is interchangeable.
- Substitute a CPA-prepared P&L. Some accountants will prepare a P&L — ordinary professional work — while declining an attestation letter. On several programs the P&L is the stronger document anyway.
- Tell your loan officer early. There is usually more than one way to document a self-employed file, and the alternatives are easier to arrange before the file is in underwriting than after. If your accountant has already said no, say so at application.
What does not work is pressing a reluctant CPA with the same form a second time, or shopping for an accountant who will sign something the first one would not. Underwriters read these letters closely, and a letter that over-reaches gets the file more scrutiny, not less.
FAQ
What is a CPA letter for a mortgage?
A CPA letter — also called a self-employment verification letter — is a one- to two-page document signed by a licensed CPA confirming three things: the borrower is self-employed, the business is currently active and operating, and the CPA has professional knowledge of the business as accountant or tax preparer. It is not a financial statement and does not by itself prove income.
How do I get a CPA letter for a mortgage?
Request the letter from your regular accountant or tax preparer — the CPA must have professional knowledge of your business. If your accountant is not a CPA or enrolled agent, your loan officer can provide a referral to one who routinely prepares mortgage letters. Allow 2–5 business days if your CPA has current records, or 1–2 weeks if a P&L needs to be prepared first. Request it before you are under contract.
Do I need a CPA letter for a bank statement loan?
Not always, but getting one reduces the expense ratio applied to your deposits. Without a CPA letter, lenders apply a program-specific expense ratio to gross deposits. With a CPA letter or CPA-prepared P&L, some programs reduce that ratio to as low as 10%, directly increasing your qualifying income.
Is there a sample or template CPA letter for a mortgage?
Yes. A standard CPA letter includes the CPA's letterhead and credentials, the borrower's name and business identification, an attestation that the business is currently active, the basis for the CPA's professional knowledge, and a signature dated within 120 days of closing. A complete sample appears on this page — fill in all bracketed fields before submitting and do not submit a template with placeholders.
1st Nationwide Mortgage Corporation, NMLS #1281. Doing business in 41+ states. Bank statement and P&L loan programs are subject to credit, income, and program requirements. Not all applicants will qualify. Equal Housing Lender.