Paid Tax Preparer: PTIN, Circular 230, and Due Diligence

To legally prepare federal returns for pay, the IRS requirements for a paid tax preparer are: get a Preparer Tax Identification Number and renew it every year, follow the practice standards in Treasury Circular 230, e-file if you expect to prepare eleven or more individual returns, meet heightened due diligence rules for certain credits, keep records for three years, and sign every return you prepare. The registration fee is $18.75 for 2026.1Internal Revenue Service. PTIN Top FAQ 4 Everything else flows from those baseline obligations.

Who Counts as a Paid Preparer

Federal law defines a tax return preparer as anyone who prepares, or employs others to prepare, a return or refund claim for compensation. Handling a “substantial portion” of a return counts the same as preparing the whole thing.2Office of the Law Revision Counsel. 26 USC 7701 – Definitions – Section: Tax Return Preparer Compensation is the trigger. Volunteer tax help falls outside the definition entirely.

There are two roles. A signing preparer takes primary responsibility for the return and puts their identifying information on the filed document. A nonsigning preparer handles a significant piece of the work, such as advising on a deduction that materially shapes the liability, without signing. Both are subject to the rules below. If you get paid for tax advice that drives a major part of someone’s filing, you are a preparer even if you never touch the form itself.

Get and Renew a PTIN

Every paid preparer must obtain a PTIN before preparing any federal return, regardless of credentials.3eCFR. 26 CFR 1.6109-2 The IRS uses this number to track which professional prepared each paid return.

Apply through the IRS online portal or on paper with Form W-12. The online application takes about fifteen minutes and usually generates the PTIN immediately.4Internal Revenue Service. PTIN Requirements for Tax Return Preparers You’ll provide your Social Security number, personal contact information, and business details. The application also asks about felony convictions and prior tax compliance issues.5Internal Revenue Service. Instructions for Form W-12

The 2026 fee is $18.75, whether you’re new or renewing.1Internal Revenue Service. PTIN Top FAQ 4 Renewal is annual. Filing a return without a valid PTIN draws a penalty of $50 per return (adjusted for inflation), capped at $25,000 per calendar year, and that cap also rises with inflation.6Office of the Law Revision Counsel. 26 USC 6695 – Other Assessable Penalties With Respect to the Preparation of Tax Returns for Other Persons

E-File If You’ll Prepare Eleven or More Returns

If you expect to prepare eleven or more individual income tax returns in a calendar year, you must file them electronically. The threshold applies to the firm collectively, not just to you. If the members of your firm together expect to cross eleven, every member must e-file, even someone who personally handles only a few.7Internal Revenue Service. Frequently Asked Questions E-file Requirements for Specified Tax Return Preparers

E-filing requires an Electronic Filing Identification Number. Apply through the IRS e-services portal and select the Electronic Return Originator option. Principals who are not attorneys, CPAs, or Enrolled Agents must be fingerprinted through an IRS-authorized vendor. The IRS then runs a suitability check that can include a credit review, tax compliance verification, and a criminal background check. Approval takes up to 45 days.8Internal Revenue Service. Become an Authorized E-file Provider

A taxpayer can opt out of e-filing by giving you a signed, dated statement before the return is filed, saying they prefer paper and will submit the return themselves.9eCFR. 26 CFR 301.6011-7 – Specified Tax Return Preparers Required to File Individual Income Tax Returns Using Magnetic Media

Follow Circular 230 on Every Return

Treasury Department Circular No. 230 sets the ethical rules for practice before the IRS. At its core, the regulation requires preparers to exercise due diligence when preparing returns, checking the accuracy of client-provided information, and making representations to both the IRS and clients.10eCFR. 31 CFR 10.22 – Diligence as to Accuracy You can rely on another person’s work, but only if you supervised them with reasonable care.

In practice, you can’t simply key in whatever a client tells you. If something looks wrong or inconsistent, you have to ask. Circular 230 also requires you to sign the returns you prepare, include your PTIN, and give the taxpayer a completed copy no later than the time it’s presented for their signature.11eCFR. 26 CFR 1.6107-1 – Tax Return Preparer Must Furnish Copy of Return or Claim for Refund to Taxpayer and Must Retain a Copy or Record If a client asks for their records back, you must return them promptly, even if the client still owes you money.12Internal Revenue Service. Treasury Department Circular No. 230 – Regulations Governing Practice Before the Internal Revenue Service A fee dispute is not a reason to hold someone’s tax documents.

Heightened Due Diligence for Certain Credits

Preparers face stricter due diligence duties when a return claims any of the following: the Earned Income Credit, American Opportunity Tax Credit, Child Tax Credit, Additional Child Tax Credit, Credit for Other Dependents, or Head of Household filing status. For each, you must complete Form 8867 and document that you interviewed the taxpayer, asked adequate questions, and reviewed enough information to confirm eligibility.13Internal Revenue Service. Instructions for Form 8867

The penalty for missing these requirements is $650 per credit or filing status per return for 2026. A single return claiming the Earned Income Credit, Child Tax Credit, and Head of Household status can generate up to $1,950 in due diligence penalties on its own if you didn’t do the required legwork.14Internal Revenue Service. Consequences of Filing EITC Returns Incorrectly The IRS audits these failures aggressively, and the fines compound across a season’s worth of returns.

Keep Records for Three Years

Signing preparers must keep a copy of every return prepared, or at minimum a record with the taxpayer’s name, identification number, taxable year, and type of return. These records must be available for IRS inspection for three years after the close of the return period in which the return was presented for the taxpayer’s signature.11eCFR. 26 CFR 1.6107-1 – Tax Return Preparer Must Furnish Copy of Return or Claim for Refund to Taxpayer and Must Retain a Copy or Record

Due diligence records for credit-related returns (Form 8867, supporting worksheets, taxpayer documents, and notes on the questions you asked and the answers you got) must also be kept for three years.13Internal Revenue Service. Instructions for Form 8867 If a corporate or partnership practice dissolves before the three-year window closes, the people responsible for winding up the business remain on the hook for retention.

Penalties Preparers Face

IRS penalties for preparers fall into two broad categories: administrative violations and conduct that causes a taxpayer to understate their liability.

Administrative Penalties

These cover procedural slips. The statutory base amounts, adjusted upward for inflation each year, include failure to furnish a PTIN at $50 per return with a $25,000 annual cap, and failure to sign a return at $50 per return under the same cap structure. Both can be waived if you show reasonable cause.6Office of the Law Revision Counsel. 26 USC 6695 – Other Assessable Penalties With Respect to the Preparation of Tax Returns for Other Persons

Understatement Penalties

When your work causes a taxpayer to understate what they owe, the penalties get expensive. For an understatement from an unreasonable position that you knew or should have known about, the penalty is the greater of $1,000 or 50 percent of the fee you earned on that return. For willful or reckless conduct, the penalty is the greater of $5,000 or 75 percent of the fee.15Office of the Law Revision Counsel. 26 USC 6694 – Understatement of Taxpayers Liability by Tax Return Preparer If both apply to the same return, the willful-conduct penalty is reduced by whatever was already assessed under the unreasonable-position penalty.

Court Injunctions

For the worst offenders, the IRS can ask a federal court to bar someone from preparing returns entirely. A judge can issue that injunction when a preparer has repeatedly engaged in penalizable conduct, misrepresented their credentials, guaranteed a specific refund amount, or committed fraud that interferes with tax administration.16Office of the Law Revision Counsel. 26 USC 7407 – Action to Enjoin Tax Return Preparers The IRS pursues these regularly against operators running refund-fraud schemes.

Representation Rights Are Separate From the PTIN

Holding a PTIN lets you prepare returns. It does not give you authority to represent clients before the IRS in audits, collections, or appeals. Attorneys, CPAs, and Enrolled Agents have unlimited representation rights, regardless of whether they prepared the return.17Internal Revenue Service. Understanding Who You Pay to Prepare Your Tax Return Enrolled Agents earn their credential federally by passing the IRS Special Enrollment Examination, a three-part test covering individual tax, business tax, and representation procedures.18Internal Revenue Service. Become an Enrolled Agent

If you hold a PTIN without a professional license, you’re an unenrolled preparer. Since 2016, an unenrolled preparer cannot represent any client before the IRS on a return prepared after 2015 unless they’ve completed the IRS Annual Filing Season Program.19Internal Revenue Service. Frequently Asked Questions Annual Filing Season Program The program requires eighteen hours of continuing education each year: a six-hour federal tax refresher course with a comprehension test, ten hours of other federal tax law, and two hours of ethics.20Internal Revenue Service. General Requirements for the Annual Filing Season Program Record of Completion Completing it earns a Record of Completion and limited representation rights, but only for clients whose returns you personally prepared and signed.

State Requirements Sit on Top of Federal Ones

Federal registration is the floor, not the ceiling. A handful of states impose their own licensing or registration requirements on non-credentialed preparers, typically involving qualifying education (ranging from 60 to 80 hours), annual continuing education, competency exams covering both federal and state tax law, and sometimes a surety bond. Annual state registration fees generally run between $33 and $100, with bond premiums on top.

The specifics vary. Some states require an exam, others don’t. Some mandate a surety bond, others rely on continuing education alone. Credentials earned in one state don’t automatically transfer, so preparers who work across state lines need to check each jurisdiction separately. Penalties for operating without required state registration can run into the thousands of dollars per violation.