Do I Need a CPA for My Small Business? When It Is Required and When It Is Optional

Do I need a CPA for my small business is really two questions, and only one of them has a rule behind it. Legally, almost never: no federal law requires a business to use a CPA, any holder of a preparer tax identification number may prepare and sign your return for a fee, and nothing about bookkeeping, payroll or forecasting is restricted to a license. The moment a CPA becomes non-optional is when an outside party you depend on, a lender, an investor, a franchisor, a bonding company or a regulator, asks for financial statements that only a licensed CPA firm may issue.

The short version: hire a CPA when a report has to carry a CPA firm’s signature; otherwise choose between a CPA, an enrolled agent and a bookkeeper on price, fit and the work in front of you.

When you do need a CPA for your small business

Audited or reviewed financial statements

Attest work is where the license is the whole point. Audits and reviews are performed and signed by CPAs in licensed CPA firms, under state accountancy law. Three engagements sit on the ladder and they cost very different amounts: a compilation carries no assurance, a review gives limited assurance, and an audit produces an opinion. If the party asking has specified one of them, that specification, not your preference, decides who you hire.

The restriction comes from state statute rather than from any federal rule. North Carolina’s statutes are a clear example, permitting a non-CPA to practice only where that person “uses the term ‘accountant’ and only the term ‘accountant’ in connection with his name on all reports, letters of transmittal, or advice,” and its board maintains a separate rule section for CPAs performing attest services. New York restricts the “certified public accountant,” “CPA,” “public accountant” and “PA” titles to licensees. Rules are written state by state, so confirm with the board in the state where the work will be done.

There is a continuing condition attached to that authority as well. The AICPA states that “almost every firm that performs accounting or auditing work is required to undergo a peer review,” and states enforce it as a licensing condition. Washington’s WAC 4-30-130 requires firms “offering and/or performing attest services or other professional services for which a report expressing assurance is prescribed by professional standards” to take part in a board-approved peer review program in order to renew the firm license.

SBA lending, where the threshold is written down

SBA loan programs are run against a Standard Operating Procedure, and the SOP puts real numbers on when prepared statements stop being enough. SOP 50 10 8, effective June 1, 2025, tells lenders on CAPLines to “obtain Borrower prepared financial statements and tax returns if the CAPLine amount is $1,000,000 or less and compiled, reviewed, or audited financial statements and tax returns if the CAPLine amount is over $1,000,000, consistent with lender’s policies governing its similarly-sized, non-SBA guaranteed commercial lines of credit.”

Read that sentence carefully before you act on it. Below the line, your own books are the deliverable. Above it, an outside accountant has to produce a compilation, a review or an audit, and the lender’s own credit policy decides which.

On a change of ownership where a division or segment of an existing business is being acquired, the same SOP allows a lender to use “alternative forms of third-party verification such as third-party CPA-prepared or reviewed financial statements, sales tax payment records, transient occupancy tax, credit reporting services, etc., to verify the seller’s financial data.” CPA-prepared statements are named as one accepted route rather than as the only one.

The new Quality of Earnings requirement, from October 1, 2026

SOP 50 10 8.1 takes effect on October 1, 2026 and adds a diligence requirement that did not previously exist. Its wording: “For Business Expansion and Initial Acquisition transactions where the Purchase Price as defined in Paragraph A.1 is equal to or greater than $3 million, the Lender must also obtain a Quality of Earnings (QoE) in addition to the required Business Valuation. The $3 million threshold is determined before the application of buyer equity, seller debt, or other financing sources. Owner Buyout and ESOP & Cooperative transactions are not subject to the QoE requirement.”

The SOP defines a Quality of Earnings as “an independent financial due diligence report that examines the reliability, sustainability, and accuracy of a business’s historical and projected earnings,” adding that it “must be performed by an independent qualified financial professional and must be conducted for the benefit of the Lender” and “must include a Cash Proof.”

Note the exact words: independent qualified financial professional. The SOP does not say CPA. The accuracy of historical earnings is accounting work and CPA firms sell it, but the requirement as written does not name the credential. If you are buying a business at or above $3 million, ask your SBA lender who it will accept before you engage anyone, because the report is being obtained for the lender’s benefit rather than yours.

When a CPA or an enrolled agent is the sensible choice

These are the situations where paying for a credential earns its money without any rule forcing it, and in each of them an enrolled agent satisfies the requirement as fully as a CPA.

Representation before the IRS. For an audit, a collection case, an appeal, or a notice on a return somebody else prepared, you need someone with unlimited representation rights. The IRS states that “enrolled agents, certified public accountants, and attorneys have unlimited representation rights before the IRS” and may act on any matter whether or not they prepared the return. Annual Filing Season Program participants have limited rights, confined to returns they prepared and signed and only before revenue agents and similar IRS employees, and an uncredentialed PTIN holder has had no representation authority since January 1, 2016. Our piece on CPA vs enrolled agent sets out how the two credentials compare on everything else.

Entity choice and owner compensation. How an owner takes money out of a business has a rule attached to it. The IRS states that “distributions and other payments by an S corporation to a corporate officer must be treated as wages to the extent the amounts are reasonable compensation for services rendered to the corporation,” and it lists the factors it weighs, including training and experience, duties and responsibilities, time devoted to the business, and what comparable businesses pay for similar services. What counts as reasonable in your case is a judgment about your facts, so put the question to a CPA, an enrolled agent or a tax attorney who has seen the whole picture rather than to an article.

Operating in more than one state. Registrations, filings and apportionment multiply with every state you touch, and the return stops being a form-filling exercise. Ask a preparer with unlimited representation rights, and ask specifically about the state side, because state tax authorities set their own rules about who may represent you before them.

A sale, or bringing in an investor. Buyers, their lenders and their advisers work from financial statements, and the standard they ask for is set by them. Find out what the other side requires, in writing, before you decide what level of accounting help you are buying.

When a CPA is optional

Preparing and signing the return. Anyone with a preparer tax identification number may prepare a federal return for money, and there is no federal credential requirement beyond that. The scale of it is worth seeing plainly. The IRS reported 886,338 PTIN holders as of September 1, 2026, of whom 209,076 were CPAs. That is roughly one paid preparer in four holding the CPA credential. Those figures count PTIN holders rather than professions, and the IRS notes that some preparers hold multiple credentials, so the categories overlap.

Bookkeeping, payroll and management reporting. No US state licenses bookkeepers, and the title is unprotected. Two voluntary private credentials exist, the AIPB Certified Bookkeeper and the NACPB Certified Public Bookkeeper, and neither is a state license despite NACPB using the word license for its own credential. What a bookkeeper costs covers the three routes and what each one really costs.

Forecasting, budgeting and fractional CFO work. None of it is attest work and none of it requires a license of any kind. The judgment to look for is experience with businesses your size, not letters after a name. Fractional CFO work is a distinct hire from either a bookkeeper or a tax preparer.

Tax planning and advice. Not restricted to CPAs. Enrolled agents hold full federal tax practice rights.

A simple Schedule C with clean books. If your records reconcile, your return carries one state and you have no notices outstanding, the choice is about price and service rather than about credential. What tax preparation costs compares every route, including the free filing programs and what the IRS itself publishes about the cost and time a return takes.

A decision table by situation

The threshold nobody can source

There is a version of this question that gets answered confidently everywhere and has nothing behind it: you need a CPA once you pass a revenue number, or once you incorporate, or once you hire your first employee. No source supports any of those. There is no revenue test, no entity test and no headcount test for needing a CPA anywhere in federal law, in the IRS’s guidance on preparer credentials, or in the SBA’s lending procedures. The thresholds that do exist are the ones quoted above, and they are attached to a lender’s requirements rather than to your size.

The real trigger is external. An outside party you need something from asks for work only a CPA may sign, and at that point the question answers itself. Until then you are choosing among CPAs, enrolled agents and bookkeepers on price and fit, and the biggest determinant of what you pay is not the credential but the market your firm sells into. In the last National Society of Accountants fee survey, covering 2019 and 2020, the same personal return billed at an average of $130.57 an hour in rural areas and $179.30 an hour in large cities. What a CPA costs sets out what the surveys do and do not show.

How to find the right one

Start from what you are actually being asked for, then verify the person. If a report has to be signed, confirm the firm is licensed to do attest work with the state board of accountancy in the state concerned; NASBA’s cpaverify.org lookup covers most of the country, though its database is aggregated from 53 of the 55 licensing jurisdictions and excludes Hawaii and New Mexico. If the work is a return or an IRS matter, the IRS Directory of Federal Tax Return Preparers with Credentials and Select Qualifications lists preparers holding recognized credentials. Ask who signs, what the fee covers if a notice arrives, and whether that person can represent you if it escalates. Our directory lists CPA firms by state and city, and if the gap is forecasting and a reporting pack rather than compliance, fractional CFO work is the better description of the hire.

Frequently Asked Questions