You are legally responsible for everything on your tax return, even the parts someone else typed. That single fact should shape how you choose a preparer, because the person who made the mistake is not the person the IRS sends the bill to.
The good news is that the checks worth doing take about fifteen minutes, and most of them can be done before you ever pick up the phone.
Start with the PTIN, because it is not optional
Anyone who is paid to prepare a federal return must have a Preparer Tax Identification Number and must sign the return with it. This is not a credential and it is not hard to get, but its absence is a red flag that ends the conversation. A preparer who will not put their PTIN on your return is what the IRS calls a ghost preparer, and it is the single clearest sign that something is wrong.
You can check the IRS Directory of Federal Tax Return Preparers with Credentials and Select Qualifications by ZIP code. Not every legitimate preparer appears there, because the directory only lists people with credentials or Annual Filing Season Program records, but a listing is a useful positive signal.
Understand what the credential actually means
The word "accountant" is not protected in most contexts. These four are different things:
| Who | Licensed by | Can represent you before the IRS |
|---|---|---|
| Certified Public Accountant | A state board of accountancy | Yes, without limit |
| Enrolled agent | The IRS, after a three-part exam | Yes, without limit |
| Attorney | A state bar | Yes, without limit |
| Unenrolled preparer | Nobody | Only in limited circumstances |
Unlimited representation rights matter in one specific situation: the letter that arrives eight months after you filed. A credentialed preparer can speak to the IRS on your behalf about it. An unenrolled preparer generally cannot, even if they prepared the return. The IRS explains the tiers in its guide to choosing a tax professional.
None of this means an unenrolled preparer is a bad choice. Many are excellent, experienced and considerably cheaper. It means you should know which one you are hiring, and match it to how complicated your year was.
Verify the licence yourself
A CPA licence is public information. Every state board publishes a lookup, and the National Association of State Boards of Accountancy runs a central verification tool covering most jurisdictions. Enrolled agent status can be confirmed by emailing the IRS enrolled practitioner program, and attorneys appear in state bar directories. Verification takes two minutes and almost nobody does it.
The five questions that actually separate firms
- What is your fee, and what triggers it going up? A flat fee for a simple return is normal. What you want to know is what happens when a K-1 shows up in March, or when you mention the rental property halfway through.
- Who prepares the return and who reviews it? At larger firms the person you meet is often not the person doing the work. That is fine, as long as somebody senior signs it.
- Are you open in July? Seasonal offices close on April 16. Notices, amended returns and audit letters do not respect that calendar.
- What do you charge if the IRS sends a notice about a return you prepared? Some firms fix their own errors free, some charge hourly, and some charge for an audit protection product you may not need.
- How do you send and store my documents? Your return contains every identifier a criminal needs. A secure portal is standard practice now, and email attachments are not.
Fee structures worth avoiding
A fee based on the size of your refund creates an obvious incentive to inflate the refund. It is also the practice the IRS singles out when it explains how to make a complaint about a tax return preparer, alongside preparers who do not sign and refunds diverted to somebody else's account. Refund anticipation products deserve the same scrutiny: an advance on your own refund is a short-term loan, and the fee expressed as an annual rate is usually startling.
Match the preparer to the year you had
Most people do not need the most credentialed person available. A useful way to think about it:
- W-2 income, standard deduction, maybe some interest. This return is genuinely simple. A storefront preparer, a volunteer program if you qualify, or filing it yourself online are all reasonable. Our federal income tax estimator will tell you roughly what to expect before you decide.
- Self-employment, rentals, a K-1, stock sales with real gains. Now the preparer's judgment is worth money. Look for a CPA or an enrolled agent who works with your situation regularly.
- Multiple states, equity compensation, a business with employees. Firm territory. Ask specifically about experience with your exact issue.
- Unfiled years, a levy, an audit already open. This is not a preparation problem, it is a representation problem. Read our guide on what to do when you owe the IRS first.
Red flags, in order of how much they should worry you
- Refuses to sign the return or to give a PTIN.
- Promises a specific refund amount before seeing your documents.
- Asks you to sign a blank or incomplete return.
- Bases the fee on the refund size.
- Wants the refund routed through their own bank account.
- Suggests deductions you cannot substantiate, or invents dependents.
- Has no physical address, no year-round contact, and communicates only by text.
Before you hand anything over
Gather your documents first: it shortens the appointment and it lowers the fee at firms that bill for time. Work through our tax document checklist, then use the state directory to find preparers, CPA firms and enrolled agents near you. Call two or three. The one that answers the fee question directly, in writing, before you commit is usually the one to hire.