How can I verify a CPA license?

Use the accountancy board in the state where the CPA is licensed. Check the individual's name, license status, and any public disciplinary information available from that regulator.

What should I ask before hiring a CPA firm?

Ask which services are included, who will do the work, how communication and deadlines are handled, what records are needed, how fees are calculated, and whether support is available outside filing season.

Can a CPA guarantee a tax result?

Be cautious about guaranteed outcomes. A professional should explain assumptions and uncertainties and request supporting records; tax positions depend on the facts and applicable rules.

How to Choose a CPA Firm for a Small Business

October 3, 2026 · Small business guide · 2 min read

A good fit depends on what your business needs and what the firm actually agrees to do. A CPA's title alone does not tell you whether the engagement includes bookkeeping, tax preparation, planning, payroll, financial statements, or help responding to an agency notice.

Define the work before comparing firms

List your business structure, locations, bookkeeping system, payroll needs, filing obligations you know about, and the questions you want answered. Ask each firm to separate recurring work from one-time projects. Confirm whether the proposal covers federal, state, local, or multi-jurisdiction work and what triggers additional fees.

Ask who will serve the account

Find out who reviews the work, who handles routine questions, and whether you will work with a partner, manager, or rotating team. Ask how the firm handles busy-season deadlines, document requests, secure file exchange, and follow-up after a filing. IRS guidance for small businesses recommends asking about qualifications, fees, availability, and reviewing the completed return before signing.

Verify credentials and match experience

Check a CPA's current license with the relevant state board. Ask whether the firm has experience with businesses similar in structure and activity to yours, and request a clear description rather than a broad specialty claim. If you are considering a non-CPA tax professional for a specific service, understand their qualifications and representation authority for that service.

Prepare your records and clarify responsibilities

Ask what reports and source documents the firm needs, how often to provide them, and how the firm will flag missing or inconsistent information. The IRS explains that recordkeeping systems should clearly show business income and expenses and support items reported on tax returns. You remain responsible for reviewing information supplied for filings.

Compare proposals on the same basis

Compare scope, responsible staff, turnaround expectations, response channels, fee structure, and out-of-scope rates. Read the engagement letter and ask about renewal, termination, data access, and record retention. The IRS small-business guide to selecting a tax professional is a useful independent checklist.

Use our CPA firm directory to find firms to interview, then verify credentials and agree on engagement scope directly.

Frequently Asked Questions

How can I verify a CPA license?: Use the accountancy board in the state where the CPA is licensed. Check the individual's name, license status, and any public disciplinary information available from that regulator.
What should I ask before hiring a CPA firm?: Ask which services are included, who will do the work, how communication and deadlines are handled, what records are needed, how fees are calculated, and whether support is available outside filing season.
Can a CPA guarantee a tax result?: Be cautious about guaranteed outcomes. A professional should explain assumptions and uncertainties and request supporting records; tax positions depend on the facts and applicable rules.