Applying for a business loan means proving your business can carry the debt. For companies with straightforward books and steady W-2 payroll, tax returns and financial statements usually answer the lender’s questions. For self-employed owners, partnerships, and small businesses with more complex finances, they often don’t — and the lender asks for a letter from a CPA.
A CPA letter gives a commercial underwriter independent confirmation of facts the business itself is asserting: that the entity exists and is active, who owns it and in what proportion, how long it has operated, and what the prepared financial records actually show. This guide covers when business lenders request these letters, what SBA and commercial underwriters look for, and how the requirements differ from mortgage lending.
How Business Loan Requirements Differ From Mortgage Lending
Most published guidance about CPA letters is written for mortgages, and business lending works differently in ways that change what the letter needs to address.
A mortgage underwriter is primarily assessing an individual’s ability to repay from personal income. A commercial underwriter is assessing whether the business can service the debt from business cash flow. That shifts the focus:
- The business is the borrower, not just the owner. Business tax returns (Forms 1120, 1120-S, or 1065) carry as much weight as personal returns, and sometimes more.
- Debt service coverage matters more than debt-to-income. Commercial lenders typically calculate a debt-service-coverage ratio — business cash flow measured against total debt payments — rather than the DTI used in mortgage lending.
- Entity structure and ownership carry legal weight. Ownership percentages determine who must sign, who provides a personal guarantee, and who counts as a principal on the application.
- Business continuity is part of the question. Lenders want confirmation the business is currently active and operating, not simply that it filed returns last year.
SBA Loan Requirements and CPA Letters
SBA-backed loans are among the most common financing routes for small businesses, and because the SBA guarantees a portion of the loan, documentation standards are strict. Lenders processing SBA applications frequently request CPA involvement.
SBA 7(a) Loans
The most widely used SBA program, generally applied to working capital, expansion, equipment, and in some cases refinancing existing business debt. Because 7(a) files rely heavily on demonstrated business cash flow, underwriters often want a CPA to confirm ownership structure, length of operation, and that the submitted financial statements were prepared or reviewed from actual records.
SBA 504 Loans
Used for major fixed assets such as real estate and heavy equipment, structured through a Certified Development Company alongside a participating lender. With two parties reviewing the file and a longer term, verification of entity details and ownership percentages is typically thorough, and a CPA letter is a common supporting document.
What SBA Files Commonly Ask a CPA to Confirm
- Legal business name, entity type, and active operating status
- Ownership percentages for every principal on the application
- How long the business has operated under current ownership
- That the CPA prepared or reviewed the business and personal tax filings submitted
- Which financial records the CPA relied on — profit and loss, balance sheet, bookkeeping, bank statements
- Consistency between filed returns and the interim financials in the application
Other Business Financing That May Require a CPA Letter
Conventional Commercial Term Loans
Bank-issued term loans are underwritten on the bank’s own standards. Where financials are complex or the business structure has changed recently, a CPA letter helps the underwriter confirm the picture.
Business Lines of Credit
Revolving credit facilities are usually reviewed on an ongoing basis rather than once at origination, so lenders may request confirmation that the business is still active and that recent financials were prepared from proper records.
Where a lender also needs to confirm where the money came from, that is handled separately — see how a CPA letter verifies source of funds for a line of credit.
Equipment Financing
Because the equipment secures the loan, income scrutiny is often lighter — but lenders still verify that the business exists, is operating, and has the cash flow to cover payments.
Commercial Real Estate Loans
These files sit closest to mortgage underwriting, and typically involve the most documentation of the group: business returns, personal returns, entity documents, and often a CPA letter tying them together.
What a CPA Can — and Cannot — State on a Business Loan Letter
Professional standards apply regardless of loan type. A compliant letter confirms facts drawn from records the CPA prepared or reviewed.
A CPA CAN confirm:
- Legal business name, entity type, and ownership percentages
- Length of operation and current active status
- That the CPA prepared or reviewed specific tax filings
- Which financial records were relied upon
- Historical revenue and expense patterns drawn from those records
A CPA CANNOT:
- Guarantee the business will repay the loan
- Predict future revenue or profitability
- State that the business is “financially sound” as an opinion
- Provide assurance on financial statements that were not audited or reviewed under the applicable engagement standards
Under AICPA guidance on third-party verification letters, a CPA may state facts consistent with prepared filings and active records — not predictions or assurances. This protects both the CPA and the lender from a letter being treated as something it is not.
What If My CPA Declines the Request?
It is common for an accountant to decline a lender’s request, and it usually isn’t about the business. Commercial lenders sometimes send open-ended forms asking a CPA to confirm the borrower can repay or that the business is financially healthy — statements professional standards do not permit. Faced with that wording, many CPAs decline rather than negotiate it.
The request is usually workable once it is reframed. Ask the lender for the specific facts they need confirmed. A request to verify entity type, ownership percentage, length of operation, and which filings the CPA prepared is routine and can be answered without breaching any standard. If your accountant still declines as a matter of firm policy, a licensed CPA who regularly prepares third-party verification letters can issue one within the same professional limits.
Documents to Prepare Before Requesting the Letter
Business Financial Records
- Business tax returns for the last two years (Form 1120, 1120-S, or 1065)
- Year-to-date profit and loss statement
- Balance sheet
- Business bank statements
- Accounts receivable and payable ageing, where requested
Entity Documentation
- Articles of Incorporation or Organization
- Operating Agreement or Partnership Agreement
- EIN confirmation letter
- Business licences and registrations
Personal Documentation for Principals
- Personal tax returns for owners with a significant stake
- Personal financial statement, commonly required on SBA files
What a CPA Letter Is
A CPA letter is a signed statement from a licensed Certified Public Accountant confirming factual details about a business — if you’re new to these documents, start with what a CPA letter is before reading further.
Who Needs One
Business loan applicants most likely to be asked for a CPA letter are owners of LLCs, S-corporations, and partnerships; businesses whose revenue varies year to year; companies that have recently restructured or changed ownership; and applicants to SBA programs, where documentation standards are strictest.