In this guide

  1. What a PTIN is
  2. Why every preparer must have one
  3. The IRS public directory
  4. Step-by-step verification
  5. What to do if you cannot find a preparer
  6. What to do if a preparer refuses to give you their PTIN
  7. The IRS’s “ghost preparer” warning
  8. What to do after you verify

What a PTIN is

A Preparer Tax Identification Number (PTIN) is an eight-digit number prefixed with the letter P that the IRS issues to every individual who prepares federal tax returns for compensation. The PTIN was created by Congress in 2008 as a baseline accountability mechanism, and it is the foundation on which every other preparer credential rests.

A PTIN is not a credential. It does not signal that the holder has passed any test, completed any continuing education, or met any educational requirement. It is the equivalent of a driver’s license number: every paid preparer must have one, but the PTIN itself does not certify competence.

Why every preparer must have one

Federal law requires that every paid preparer who prepares all or substantially all of a federal tax return obtain and use a PTIN. The PTIN must be entered on every return the preparer prepares for compensation. A preparer who fails to obtain or use a PTIN is subject to civil penalties under IRC § 6695 and may be barred from practice before the IRS.

The IRS public directory

The IRS Return Preparer Office maintains a public, searchable directory of every preparer who holds an active PTIN and one of the four IRS-recognized credentials (Attorney, CPA, Enrolled Agent, AFSP completion) or other listed qualifications. The directory is available free of charge at irs.treasury.gov/rpo/rpo.jsf. It does not require an account or login.

The directory does not include uncredentialed preparers who hold a PTIN but have no IRS-recognized credential. If a preparer claims to be a paid preparer but cannot be found in the directory, the most likely explanation is that they hold no IRS-recognized credential. (Such preparers are still legal — the directory is a credential listing, not a PTIN database.)

Recommended: a deeper background read on tax-professional credentialing →

Step-by-step verification

To verify a credentialed preparer:

  1. Open the IRS Return Preparer Office directory in any browser.
  2. Enter the preparer’s last name, ZIP code, or the credential type you are searching for. The directory accepts partial matches.
  3. Review the search results. Each result shows the preparer’s name, business name (if listed), city, state, ZIP code, and credential type.
  4. Cross-check the result against the preparer’s business card, website, or your engagement letter. The name and city should match exactly.
  5. For CPAs, additionally verify the license with the issuing state’s Board of Accountancy. For attorneys, check the relevant state bar.

The directory is updated as the IRS Office of Enrollment processes credential changes. A preparer who recently completed a credential may not yet appear in the public directory.

What to do if you cannot find a preparer

If a preparer claims a credential and cannot be found in the IRS directory, ask for documentation: the credential certificate, the date of issuance, and the credential number. Cross-check independently. The most common reasons a credentialed preparer does not appear are typographical errors in your search, a recently issued credential that has not yet been indexed, or a credential issued under a different name (a maiden name, for example).

If documentation cannot be provided and the directory shows no match, consider whether the preparer is misrepresenting their credentials. Misrepresentation is a serious violation of Circular 230 and can be reported to the IRS Office of Professional Responsibility.

What to do if a preparer refuses to give you their PTIN

The PTIN must appear on every paid return the preparer signs. If a preparer refuses to provide their PTIN before you sign an engagement letter, or refuses to sign the return they prepare, you are dealing with what the IRS calls a “ghost preparer.” Walk away. Ghost preparers are the IRS’s number-one preparer-fraud red flag and consistently appear on the annual Dirty Dozen list of tax scams.

The IRS’s “ghost preparer” warning

A ghost preparer is anyone who prepares a return for compensation but does not sign it as the paid preparer. Ghost preparers commonly inflate refunds (by inventing dependents, fabricating Schedule C losses, or adding fake credits), pocket the inflated portion via a refund-anticipation loan or a falsified bank account, and leave the taxpayer holding the bag when the IRS opens an examination. The IRS issues a public reminder about ghost preparers every January.

What to do after you verify

Once you have confirmed the preparer’s PTIN and credential, the verification work is mostly done — but not entirely. Review the engagement letter for fee structure (refundable percentage fees are a red flag), confirm that the preparer will personally sign the return, and confirm how post-filing IRS correspondence will be handled. Our choosing-a-preparer guide covers the full vetting checklist.

Continue reading