Does a Lender Need a Letter From My CPA?

Quick answer

In Arizona,
a lender does not universally need a letter from your CPA.
A request usually appears because an underwriter needs a specific fact
about your self-employment, business access, ownership, income, or use
of business funds. The right response may be a narrow factual letter,
but it may instead be tax transcripts, business returns,
organizational records, bank statements, a profit-and-loss statement,
or another document allowed by the current loan program. Ask what fact
must be verified and which alternatives are acceptable before asking
your CPA to write anything.

Why Would a Lender Ask for a CPA Letter?

A lender may ask for a CPA letter when the file presents a question
that ordinary payroll documents cannot answer. A salaried employee may
have a pay stub and W-2 that connect the employer, earnings, and
current employment. A self-employed borrower can have income moving
through an LLC, S corporation, partnership, or sole proprietorship,
with different records showing ownership, distributions, expenses, and
available cash. The request is normally about one missing link, not
about asking an accountant to approve the mortgage.

For example, a Scottsdale consultant may plan to use money from a
business account for closing. The underwriter may need to know whether
the borrower owns the account and whether withdrawing the funds could
impair the business. Fannie Mae B3-3.5-01 says that when
self-employment income is used to qualify and business assets will
fund the down payment, closing costs, or reserves, the lender must
analyze business cash flow to determine whether the withdrawal will
harm the business. That is an agency requirement for applicable Fannie
Mae loans, not proof that every lender must obtain a CPA letter.

Another file may need ownership-history evidence. In the specific
documentation path described in Fannie Mae B3-3.5-01, alternative
records may establish how long a borrower has held at least 25%
ownership. They must clearly identify the business on the application
and be supported by the most recent year’s tax returns. The guide
names an IRS employer-identification confirmation, business license,
articles of incorporation, or partnership agreement as reliable
sources. This is not a blanket business-existence checklist or an
automatic replacement for any CPA-letter condition.

Is a CPA Letter Required for Every Arizona Self-Employed Mortgage?

No. For a covered Arizona mortgage, federal ability-to-repay rules generally
require a creditor to verify the income or assets it relies upon with
reasonably reliable third-party records. They do not create a
universal requirement for a CPA letter. The CFPB application-packet guidance also tells
self-employed applicants that they may need additional documents and
that requirements vary by lender and situation. Fannie Mae and Freddie
Mac publish program guidance, automated-underwriting findings can
specify documents, and lenders or investors may impose overlays beyond
an agency baseline.

That hierarchy matters. A conventional loan intended for sale to
Fannie Mae may follow one set of rules. A Freddie Mac loan,
government-backed loan, jumbo loan, portfolio loan, or bank-statement
program may follow another. The individual file also matters.
Ownership percentage, time in business, income trend, entity type,
tax-return use, liquidity, and the source of closing funds can change
what must be verified.

A request can also arrive at different stages. The CFPB states that a
lender cannot require supporting documents as a condition of issuing a
Loan Estimate after receiving the six required application items. Once
the applicant indicates an intent to proceed, the lender may require
documents that verify the application. That distinction prevents a
borrower from confusing an early estimate with final underwriting
approval.

The phrase “CPA letter” alone does not identify the applicable rule.
The selected product, investor, automated findings, written condition,
and facts being verified determine the documentation question. Ask the
lender which current requirements apply to your actual file; a public
agency guide does not establish every lender’s requirements.

What Can a CPA Letter Safely Say for an Arizona Mortgage?

For an Arizona borrower, a useful CPA response is usually narrow,
factual, and limited to information the CPA can support. It might
identify that the CPA prepared specified tax returns, state the entity
name shown in records supplied for that work, or confirm the length of
the professional relationship. Whether the CPA can make even those
statements depends on the services performed, available evidence,
client authorization, confidentiality duties, and professional
standards.

The danger appears when a form asks the CPA to predict that
withdrawing money will not affect the business, certify that the
business is financially healthy, confirm future income, guarantee
solvency, or assure repayment. Those conclusions may go beyond tax
preparation and resemble an attestation or assurance engagement the
CPA did not perform. The AICPA Member Insurance Programs’ third-party-verification guidance
cautions against statements beyond the engagement and specifically
warns that professional standards prohibit solvency comments.

A borrower should not pressure the CPA to sign a broad lender template
unchanged. Send the actual request, explain the deadline, authorize
appropriate communication, and let the CPA decide what can be
supported. The lender should be willing to explain the underwriting
purpose and whether a narrower response or direct records can satisfy
it. The CPA, lender, and borrower have different jobs: the CPA reports
within professional standards, the lender evaluates credit, and the
borrower supplies accurate and complete information.

A carefully limited letter still does not guarantee acceptance. An
underwriter may need separate evidence because a letter addresses only
one condition. It also does not replace the lender’s independent duty
to analyze income, assets, debts, and ability to repay under the
applicable rules.

What Documents Can Replace a CPA Letter in Arizona?

For an Arizona file, the answer depends on the fact being verified. If
the issue is business existence, organizational documents, a business
license, IRS correspondence, or a third-party business listing may
help. If the issue is ownership, the operating agreement, partnership
agreement, stock ledger, Schedule K-1, or business return may be
relevant. If the issue is income, the file may require personal and
business tax returns, IRS transcripts, year-to-date profit-and-loss
information, balance sheets, or account statements under the chosen
program.

If the issue is access to business funds, the lender may need
statements showing the account, evidence of ownership, a transaction
history, and a business cash-flow analysis. A letter saying “the
withdrawal will not hurt the business” is not automatically a
substitute for the lender’s own analysis. Fannie Mae expressly places
that analysis on the lender for applicable files that use both
self-employment income and business assets.

IRS tax transcripts can also provide third-party tax-record evidence
when the program or lender calls for them. They do not answer every
question, and a transcript can lag a recently filed return, but they
can be more direct than asking a CPA to restate tax data. The borrower
should compare the condition with documents already delivered before
ordering new work.

How Should an Arizona Business Owner Respond?

Start with the written condition. Phoenix and Scottsdale buyers often
operate service companies, professional practices, real-estate
entities, construction businesses, and seasonal businesses. The local
label does not change national mortgage rules, but the structure of
the business changes the evidence. An S corporation owner taking
payroll and distributions presents a different paper trail from a sole
proprietor whose revenue runs through one Schedule C.

Consider a Scottsdale dentist who owns the practice through an S
corporation and plans to transfer business cash for closing on a
primary residence. The file may need personal and business returns,
evidence of ownership, current financial statements, account history,
and analysis of whether the withdrawal affects operations. A
one-sentence CPA letter is unlikely to replace that complete analysis.
A narrow confirmation may still be useful if one factual gap remains
after the records are reviewed.

Now consider a Phoenix consultant who uses only personal savings for
closing and has filed returns plus current year-to-date records. If
the underwriting documents already establish income and business
existence, a CPA letter may not be needed at all. The correct answer
comes from the actual condition and current program, not from the
borrower’s occupation.

Use a clean process: request the condition in writing; ask which
guideline or overlay drives it; ask what fact the letter must address;
inventory the records already supplied; ask whether alternative
documents are acceptable; send only the narrow request to the CPA; and
keep every page of the final response. If the CPA will not make the
requested statement, return to the lender with that explanation and
ask for a compliant alternative. Do not invent language or ask the CPA
to sign something unsupported.

Timing matters in competitive Greater Phoenix purchases. Do this
documentation mapping before an offer when possible. It gives the loan
team time to identify gaps without turning a narrow question into a
last-minute closing condition. It also protects the relationship with
the CPA, who may need time to review client authorization and
professional standards.

What Should an Arizona Buyer Ask Before Ordering a Letter?

An Arizona buyer should ask five direct questions. What exact fact is
the underwriter trying to verify? Which loan program, investor rule,
automated finding, or lender overlay created the condition? Why do the
documents already submitted not answer it? What alternative records
are acceptable? Does the request ask for a factual statement or for
assurance about future performance?

The answers create accountability. They also reveal when a generic
request has been copied into the file without being tailored. A
precise condition can often be answered faster and with less
professional risk than a broad “comfort letter.” If the request is
product-specific, ask the lender which current requirement applies to
the selected program. Requirements can change, and an old checklist should never be
presented as current authority.

Keep the conversation factual and calm. Underwriting conditions are
not accusations. They are requests for evidence. Greg’s approach is to
keep the borrower informed about the process, identify who owns the
next action, and avoid letting silence increase fear. A written
checklist with the lender, borrower, and CPA roles is more useful than
repeated phone calls asking whether the letter is done.

Sources

• Fannie Mae Selling Guide B3-3.5-01, self-employed borrower
  documentation, current guide page accessed September 15, 2026.
• Freddie Mac Single-Family Seller/Servicer Guide, current guide accessed September 15, 2026.
• CFPB Regulation Z, 12 CFR 1026.43, current ability-to-repay regulation.
• CFPB loan application packet guidance, current page accessed September 15, 2026.
• CFPB Loan Estimate documentation guidance, reviewed April 3, 2024.
• AICPA Member Insurance Programs, third-party verification letters, updated May 2021; accessed September 17, 2026.
• IRS Get Transcript, accessed September 15, 2026.

Related Arizona Mortgage Planning Guides

For income-documentation context, read self-employed mortgage planning in Arizona, the Arizona bank-statement mortgage overview, and whether to file taxes before applying for a mortgage. These guides explain different documentation questions; they do not replace the selected program’s written condition.

Frequently Asked Questions