CPA Letter for a Mortgage: Guide for Self-Employed Borrowers

A CPA letter for a mortgage can be a small document with an outsized role in a self-employed borrower's loan file. It may help a lender confirm that your business exists, how long you have been self-employed, your ownership percentage, or the context behind business funds you plan to use at closing.

The important part is knowing what the letter can and cannot do. A CPA letter does not automatically approve a mortgage. It also does not replace tax returns, bank statements, a profit-and-loss statement, or other documents when a loan program requires them.

For business owners, freelancers, and independent contractors, the right approach is simple: ask your loan officer exactly what needs to be verified before asking your accountant to write anything. That one step can prevent delays and avoid a request your CPA may not be able to sign.

What Is a CPA Letter for a Mortgage?

A CPA letter for a mortgage is a written statement from a certified public accountant that provides specific factual information requested by a lender. You may also hear it called a CPA verification letter, accountant letter, or mortgage comfort letter.

For a self-employed borrower, the letter may confirm details such as the name of the business, the type of business, the borrower's ownership percentage, the length of self-employment, or the CPA's professional relationship with the borrower. The lender uses that information as part of its review. The lender, not the CPA, decides whether you qualify for the mortgage.

This distinction matters. A good CPA letter is narrow, accurate, and tailored to the lender's request. It should not make promises about future income or guarantee that a business will remain financially healthy.

When Might a Lender Request a CPA Letter?

A CPA letter is not a universal mortgage requirement. The request depends on your loan type, your documentation, and the questions that remain after the lender reviews your file. It is especially common when a self-employed borrower needs an additional layer of business verification.

For conventional underwriting, the Fannie Mae Selling Guide section on verbal verification of employment states that the lender must verify the existence of a self-employed borrower's business within 120 calendar days before the note date. A CPA is one possible third-party source of verification, but it is not the only option.

If you are still organizing your loan file, read our guide to showing proof of income when self-employed. It explains the broader documentation picture beyond the CPA letter.

What Should a CPA Letter Include?

There is no single CPA letter template that works for every mortgage. The lender should tell you which facts are needed. In many cases, the letter includes some or all of the following:

1. The CPA's name, firm, contact information, and professional credentials.
2. The borrower's name and the legal name of the business.
3. The business structure, such as sole proprietorship, partnership, LLC, or corporation.
4. The borrower's ownership percentage.
5. The length of time the borrower has been self-employed or operating the business.
6. A factual description of the CPA's relationship with the borrower, if requested.
7. Any additional factual statement the lender requests and the CPA is professionally comfortable supporting.

Some older CPA-letter templates include sweeping language about income stability or the effect of taking money out of the business. Do not assume your accountant can sign that language. Ask the loan officer to identify the precise issue the lender is trying to resolve.

CPA Letter Sample Template

Use the sample below as a conversation starter, not as a universal form. Your CPA should decide what can be stated based on the records available and professional standards. Your loan officer should confirm whether the final wording addresses the lender's request.

How to Get a CPA Letter Without Delaying Your Mortgage

The fastest route is not asking your CPA for a generic letter. It is getting the lender's request first and making the handoff clean.

1. Ask Your Loan Officer for the Exact Request

Find out which facts the underwriter needs and whether another document could satisfy the requirement. This prevents unnecessary back-and-forth.

2. Contact Your CPA Early

Do not wait until the final days before closing. Ask whether your CPA can prepare the requested factual letter and how long it will take.

3. Send Supporting Details Securely

Provide the business name, ownership information, lender request, and any relevant account details through a secure method. Avoid sending sensitive records through an unprotected channel.

4. Confirm the Wording Before Submission

Ask the loan officer whether the signed letter answers the underwriting question. If a revision is needed, the CPA should issue a new version.

5. Keep the Final Signed Copy

Save the completed letter with your other loan documents. If your timeline changes, ask whether an updated letter is needed.

Using Business Funds for a Down Payment or Closing Costs

Business owners sometimes want to use money from a business account for a down payment, closing costs, or reserves. This may be possible, although the required review depends on how the borrower is qualifying.

The Fannie Mae Selling Guide section on depository accounts says business assets may be an acceptable source of funds. If the borrower also uses income from that business to qualify, the lender must perform a business cash-flow analysis to assess the effect of the withdrawal. The lender may request recent business statements or a current balance sheet. See Fannie Mae's self-employed borrower guidance for details.

Your CPA may be able to provide factual context, such as ownership information or account details, but the underwriting decision remains with the lender. If business and personal deposits are mixed together, review our guide to preparing bank statements for a mortgage before submitting the file.

Why Some CPAs Will Not Sign a Mortgage Comfort Letter

A CPA may decline to sign a broad mortgage comfort letter, even if the CPA has worked with you for years. That does not necessarily mean something is wrong with your finances. The requested statement may go beyond the CPA's records or professional scope.

The AICPA has published guidance on CPA comfort letters for lenders and third-party verification requests. Depending on the request, your CPA may prefer to provide narrower factual wording.

CPA Letter vs. Other Self-Employed Mortgage Documents

A CPA letter is only one piece of a self-employed mortgage file. Your lender may ask for different combinations of documents depending on the loan program.

CPA Letters for Bank Statement and Alternative-Documentation Mortgages

A bank statement mortgage can be useful when tax returns do not present the clearest picture of a self-employed borrower's cash flow. Depending on the program, a lender may review personal or business deposits over a defined period and apply an expense factor to estimate qualifying income.

For business bank statements, lenders may apply an expense factor to estimate qualifying income. For example, if a lender applies a 50% expense factor to $20,000 in average monthly deposits, $10,000 may be used to estimate qualifying income. The percentage and accepted documentation vary by loan program, so ask your loan officer how your file will be evaluated.

Alternative documentation does not mean no documentation. A CPA letter may still be requested to clarify business ownership, the length of self-employment, or an expense factor. You may also need bank statements and other supporting records.

Truss Financial Group works with borrowers whose finances do not fit neatly into a standard W-2 file. If you are comparing options, start with our overview of self-employed mortgage loans and our guide to bank statement loans. You can also learn how many months of bank statements a mortgage lender may request.

For a deeper look at this route, read the complete guide to bank statement loans for self-employed borrowers and our article on profit-and-loss and bank statement mortgages for business owners.

Common CPA Letter Mistakes to Avoid

1. Assuming Every Lender Uses the Same Template

A generic letter may miss the exact issue the underwriter needs to resolve. Get the request before involving your CPA.

2. Asking the CPA to Guarantee Future Income

A CPA can provide factual information supported by records. Predicting future stability or guaranteeing repayment may go beyond that role.

3. Waiting Until the End of Underwriting

Accountants need time to review requests, especially during tax season. Start early and keep your loan officer updated.

4. Editing the Signed Letter Yourself

Do not add language, remove pages, or alter a document after it is issued. Request a revised signed version from the CPA.

5. Treating the CPA Letter as a Replacement for the Loan File

Keep your bank statements, tax records, and business documents organized. If your documentation is complex, our overview of Fannie Mae self-employed guidelines can help you prepare questions for your loan officer.

CPA Letter Checklist for Self-Employed Borrowers

Before you send the letter to your lender, make sure the file is clean and complete:

1. Confirm the lender's exact request.
2. Check the spelling of your name and business name.
3. Verify the ownership percentage and business structure.
4. Confirm the letter is on CPA firm letterhead and signed.
5. Make sure contact information is current.
6. Send the document through a secure channel.
7. Keep a copy for your records.
8. Ask whether the lender needs any updated letter closer to closing.

Frequently Asked Questions About CPA Letters for Mortgages

1. Is a CPA letter required for every self-employed mortgage?

No. A CPA letter is not required for every self-employed mortgage. A lender may request one when it needs additional verification of your business, ownership, self-employment history, or the use of business funds. The requirement depends on the loan program and your file.

2. What does a CPA letter need to say for a mortgage?

The lender should identify the facts it needs. A CPA letter may include the business name, business structure, ownership percentage, length of self-employment, CPA contact information, and other factual details the CPA can reasonably support.

3. Can a CPA letter replace tax returns or bank statements?

Usually not. A CPA letter supports the underwriting file, but it does not replace tax returns, bank statements, profit-and-loss statements, or other documents required by the mortgage program.

4. Why would a lender ask for a CPA letter when I use business funds?

If you use business assets for a down payment, closing costs, or reserves, the lender may request additional documentation. If you also use income from that business to qualify, the lender must assess the effect of the withdrawal on the business.

5. What should I do if my CPA refuses to write a mortgage comfort letter?

Tell your loan officer immediately. Ask whether the CPA can provide narrower factual wording or whether alternate documents can answer the lender's question. 

6. How recent does a CPA letter need to be for a mortgage?

The acceptable age of a CPA letter depends on the lender and the purpose of the request. Ask your loan officer when the letter must be dated and whether an updated version will be needed before closing.

Key Takeaway

A CPA letter can help a self-employed borrower move through mortgage underwriting with fewer surprises, but only when it answers the lender's real question. Start with your loan officer, request factual wording, and give your CPA enough time to respond professionally.

If your tax returns, business deposits, or income structure make a standard mortgage feel harder than it should, Truss Financial Group can help you evaluate the available paths. Contact the Truss team to discuss a mortgage strategy built around the way you actually earn income.