CPA Letter For A Mortgage Application — The Quick Read: A CPA letter is a short document a Certified Public Accountant writes to confirm specific, factual details about a borrower’s income or business — not a promise the loan gets approved. Lenders ask for one when a borrower’s income doesn’t show up cleanly on a pay stub, usually because they’re self-employed or pulling funds from a business account. It’s an input the underwriter reviews, not a decision the CPA makes. And on a DSCR loan — a loan qualified off the property’s rent instead of the borrower’s income — it often doesn’t come up at all.
A CPA letter is also called a comfort letter, verification letter, or accountant letter. Different names, same idea: an accountant putting specific facts in writing so a lender can check a box.
What Exactly Does a CPA Letter Confirm?
A CPA letter confirms narrow, verifiable facts — never a prediction about the future. Typical items include the business name and type, how long the borrower has been self-employed, the borrower’s ownership percentage, and the accountant’s professional relationship with the borrower.
That’s the whole job. The letter is not an audit. It’s not a compilation or a review under accounting standards. It’s a factual statement, and a good CPA keeps it that way on purpose.
The American Institute of CPAs treats this as a real professional risk area for accountants, not routine paperwork. CPAs face pressure from lenders and clients pulling in different directions, and the range of information different agencies request keeps expanding — which is exactly why a lot of CPAs get cautious about what they’ll sign.
That caution shows up in practice. The Journal of Accountancy has long advised CPAs to skip open-ended assurance language entirely and instead offer to send copies of a client’s tax forms directly to the lender, with a short cover note stating what was prepared and for what years — see the Journal of Accountancy’s guidance on third-party letters. That’s a factual cover sheet, not a comfort letter, and it’s often the safer move for the accountant.
Why Do Lenders Ask for One?
Lenders request a CPA letter when a self-employed borrower’s income history has a gap the underwriter can’t verify on their own — short time in business, mixed personal and business banking, or a plan to pull closing funds from a business account.
On a standard personal-income loan, the underwriter is trying to build a stable, documented income picture. If the paper trail is thin, a CPA letter fills in specific blanks: how long has this business existed, does the borrower actually own it, is the withdrawal going to hurt the business.
That last one — the funds-from-business-account scenario — is the version investors run into most. Historical guidance in this space asked the CPA to state plainly that a withdrawal “would not have a detrimental effect on the business.” Fewer accountants want to sign that sentence today, because it edges toward a forward-looking guarantee, and that’s outside what a factual letter is supposed to do. This is one of the more common friction points self-employed investors hit right before closing.
What a CPA Letter Cannot Do
The lender’s underwriter makes the credit decision — always. The letter is one document in a file, not a green light.
This trips people up because the letter feels official. It has a license number on it. It’s signed by a professional. But confirming that a business exists and that someone owns 60% of it is a different thing entirely from telling a bank “this person will pay you back.” CPAs are ethically boxed out of the second kind of statement, and a letter that tries to make it anyway can put the accountant’s license at risk.
It also doesn’t replace traditional personal-income documentation, bank statements, or a profit-and-loss statement when a program calls for those documents specifically. It supplements the file. It doesn’t shrink it.
Does a DSCR Loan Require a CPA Letter?
Usually not. A DSCR loan — short for debt-service coverage ratio, meaning the loan is qualified on whether the property’s rent covers its own payment — skips personal income documentation almost entirely, so the CPA-letter conversation that dominates conventional self-employed underwriting mostly disappears. Final eligibility is subject to lender guidelines, credit approval, reserves, and property review. A CPA letter cannot approve a mortgage, predict future income, or vouch for a borrower’s ability to repay a loan.
Instead of traditional personal-income documentation and accountant sign-offs, the file leans on the appraisal. For a single rental unit, that means the Single-Family Comparable Rent Schedule, Form 1007, paired with the appraisal report. For a two-to-four-unit property, it’s the equivalent small-income-property form — see Fannie Mae’s guidance on rental income documentation for how these forms work. The terminology traces back to agency underwriting, but DSCR lenders in the non-QM space borrowed the same appraisal tools because they’re the fastest way to pin down market rent.
If you’re new to how this qualification model works end to end, Lendmire’s complete DSCR loans guide walks through the mechanics in more depth. The short version: the property does the talking, not the borrower’s Schedule C.
Where a CPA letter can still surface on an otherwise DSCR file is business funds at closing. If an investor is pulling a down payment out of an LLC or corporate account, some programs still want documentation confirming ownership and access to those funds — sometimes a CPA letter, sometimes corporate documents instead. It’s the one corner of an otherwise property-first file where an accountant’s signature might still matter.
CPA Letters vs. Bank-Statement Loans — Different Documents, Different Jobs
Bank-statement loans are a separate non-QM category, and they use CPA involvement differently than a CPA letter does. Instead of confirming a handful of facts, a bank-statement program has the accountant help establish qualifying income from deposit history — a P&L, an expense ratio, or an accountant-provided ratio applied to gross deposits.
Across the wholesale programs Lendmire places these loans through, personal or business bank statements — 12 or 24 consecutive months — get run through an expense ratio to arrive at qualifying income. A service business with no employees typically uses a lower ratio; a business with six or more employees, or any product-based business, runs a higher one. An accountant can also supply a custom ratio, or the file can run on a P&L-based method instead. Transfers from the borrower’s own business into a personal account count in full toward qualifying deposits.
This is a fundamentally different exercise than a comfort letter. A bank-statement CPA involvement is building the income number the loan is qualified on. A comfort letter is just confirming a handful of static facts. If your reader landed here searching “does a bank-statement loan need a CPA,” the honest answer is: it depends on the specific program and whether the accountant is providing the expense ratio or the file is using a fixed one — worth reading how a super-jumbo bank-statement program handles CPA involvement if that’s the product in play.
Investor Impact: What This Actually Means for Your File
Choosing a DSCR loan over a personal-income program is usually the fastest way to sidestep the CPA-letter conversation altogether, since qualification runs off the rent roll instead of the tax return. Investors funding closing costs from an LLC or corporate account should still expect some form of ownership-and-access documentation — sometimes a CPA letter, sometimes not.
Investors blending W-2 or 1099 income with rental income on a hybrid non-QM product are the ones most likely to actually need a traditional letter, so it’s worth confirming which program you’re actually in before asking your accountant for anything. Asking a CPA for the wrong scope — or asking for language outside what their professional standards allow — causes delay on a deal that may be time-sensitive.
Across DSCR files broker-wide, a CPA letter request usually means one specific thing: an entity-owned property where the down payment is coming from the business, not the individual. On a straight personal-purchase rental DSCR file, it almost never comes up, because the appraisal’s rent opinion is doing the qualifying work instead. If you’re closing in an LLC and pulling funds from that entity, flagging it with your loan officer early saves a round trip later.
Key Terms Defined
CPA letter (comfort letter): a short written statement from a Certified Public Accountant confirming specific facts about a borrower’s business or income for a lender.
DSCR loan: a business-purpose mortgage qualified on whether a property’s rental income covers its own monthly payment, rather than the borrower’s personal income.
Non-QM loan: a mortgage underwritten outside standard government agency guidelines, often used for self-employed or investor borrowers whose income doesn’t fit a conventional file.
Bank-statement loan: a non-QM program that qualifies income from deposit history on personal or business bank statements instead of traditional personal-income documentation.
4506-C: an IRS form authorizing a lender to pull tax transcripts directly from the IRS, used on loans where personal income is part of the qualification — see Fannie Mae’s guidance on Form 4506-C requirements for the transcript window and validity rules that apply on agency-backed files.
Entity vesting: taking title to a property in an LLC, corporation, or trust rather than in an individual’s name — common on DSCR files.
DSCR loans are business-purpose investor loans for non-owner-occupied property, so they’re reviewed differently than a standard owner-occupied mortgage.
Frequently Asked Questions
Does every self-employed borrower need a CPA letter? No. It depends on the program and how much of the file the underwriter can already verify from bank statements and traditional income documentation. If those documents already tell a clear story, a letter often isn’t requested at all.
Can I write my own CPA letter and have my accountant sign it? Some accountants will review borrower-drafted language, but a letter that asks the CPA to guarantee something beyond documented fact — like future income stability — is the kind of request many accountants decline outright, for their own liability reasons.
Does a CPA letter cost money? Yes, typically — it’s professional work product, not a free form. Costs vary by accountant and scope, and a narrow factual letter runs far less than a full audit or compilation engagement.
If my CPA refuses to write the letter, does my loan die? Not necessarily. It usually means the loan officer needs to find an alternative path — different documentation, a different program, or in the case of an entity-owned DSCR purchase, corporate documents instead of an accountant’s letter.
Do DSCR loans ever use Form 4506-C? Rarely, since that form pulls tax transcripts tied to personal income used in qualifying, and a true DSCR file typically doesn’t use personal income at all, so it usually isn’t part of the package.
Tax treatment can depend on how funds are used and how a property is held; investors should keep clear records and talk to a qualified tax professional before relying on any deduction.
If you’re weighing whether a DSCR loan lets you skip the CPA-letter conversation on your next rental purchase, Lendmire can help you compare loan options based on the property’s income, your credit profile, leverage, and your goals as an investor. Reach out at 828-256-2183 or request a quote to see how a specific deal actually pencils out.
Whether or not a CPA letter ends up in your file usually says less about your income and more about which loan product your file was built around from the start.
For current guidelines and terms, see Lendmire’s super jumbo bank statement loan programs page.
About Lendmire
As a DSCR and non-QM mortgage broker, Lendmire — NMLS# 2371349 — connects investors with wholesale lending channels across 40 markets, including Washington, D.C. The property’s rental income, not the borrower’s tax returns, is central to lender review, which works for self-employed operators and portfolios beyond four financed properties. Scotsman Guide named Lendmire a Top Mortgage Workplace in both 2025 and 2026.
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References
1. American Institute of CPAs (AICPA) – CPA Comfort Letter Guidance
2. Journal of Accountancy – Concerns About CPA Letters to Third Parties
3. Fannie Mae – Single Family Comparable Rent Schedule (Form 1007 PDF)
4. Fannie Mae Selling Guide – Rental Income (Form 1007/1025)
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.
