Form 2848 vs Form 8821: EA Exam Part 3 Guide for 2026

Two IRS forms with nearly the same layout produce a steady stream of missed points on Part 3 of the Special Enrollment Examination (SEE). Form 2848 (Power of Attorney and Declaration of Representative) and Form 8821 (Tax Information Authorization) both name a third party and both list tax matters and periods, but they grant very different powers. This guide covers what each form does, who can be named, how the Centralized Authorization File (CAF) handles them, how revocation works, and the specific traps that show up on the 2026 exam.

What is the real difference between Form 2848 and Form 8821?

Form 2848 authorizes an eligible individual to represent a taxpayer before the IRS. Form 8821 authorizes a person or organization only to receive and inspect confidential tax information. One form lets someone speak for the taxpayer. The other lets someone read the file.

Here is the side-by-side view most exam questions are built on:

If a question describes someone who wants to talk to a revenue agent on the taxpayer's behalf, the answer runs through Form 2848. If the person only needs to see transcripts or notices, Form 8821 is enough. The full topic outline sits on the Form 2848 power of attorney topic page.

Who can be named as a representative on Form 2848?

Only individuals who are eligible to practice before the IRS under Circular 230 can be named on Form 2848. Each representative enters a designation code in Part II that shows the basis for that authority.

The codes candidates see most often are:

• a: Attorney in good standing with the bar of the highest court of any state or territory.
• b: Certified Public Accountant licensed by a state board.
• c: Enrolled Agent, with unlimited practice rights.
• d, e, f: Bona fide officer, full-time employee, or immediate family member of the taxpayer.
• h: Unenrolled return preparer holding an Annual Filing Season Program Record of Completion, with limited rights.
• k: Student working in a qualifying tax clinic program under supervision.

The form cannot create eligibility that the person does not already have. A preparer with no Annual Filing Season Program record has no representation rights, and signing a Form 2848 does not change that. Preparing a return or an amended return is not practice, so that preparer can still prepare returns. For the wider rules on who qualifies, review who may practice before the IRS under Circular 230.

How far does an unenrolled preparer's authority actually go?

An Annual Filing Season Program participant can represent a client only on a return that the participant prepared and signed, and only before revenue agents, customer service staff, and similar IRS employees during an examination.

That limit is a favorite exam scenario. The preparer cannot represent the client before Appeals, in collection matters, or on a return someone else prepared. An enrolled agent faces none of those limits, which is one reason the unlimited representation rights an EA earns carry real value in practice. When a question pairs an AFSP preparer with an Appeals conference, the preparer is out.

What can a representative do under Form 2848, and what is off limits?

A representative can do almost anything the taxpayer could do for the matters listed on line 3: receive notices, respond to the IRS, attend meetings, present facts and arguments, and sign consents and agreements. A few acts require specific authorization, and one act is never allowed.

• Sign the return: allowed only in narrow cases, such as disease or injury, continuous absence from the United States for a set period before the due date, or specific IRS permission, and the authority must be stated on line 5a.
• Substitute or add a representative: allowed only if the taxpayer grants that power on line 5a.
• Authorize disclosure to third parties: also requires an explicit grant on line 5a.
• Endorse or cash a refund check: never permitted for a representative under Form 2848.

The bottom line: authority on Form 2848 is broad but bounded by the matters listed. A representative named for 2024 Form 1040 income tax has no authority over a 2024 employment tax issue that is not listed.

What does Form 8821 allow a third party to see?

Form 8821 lets the named designee inspect or receive confidential information for the tax types, forms, and periods the taxpayer lists. Bookkeepers, payroll providers, and other service firms often use it when they need transcripts or copies of notices.

The designee cannot advocate, cannot argue a position, cannot negotiate a payment plan, and cannot sign anything for the taxpayer. Unlike Form 2848, the designee needs no professional credential, and the designee can be an entity rather than a person. An answer choice that names a firm as the representative on Form 2848 contains an error, because naming an entity is only possible on Form 8821. The tax information authorization topic covers the disclosure side in more depth.

When do you not need either form?

Several common situations require neither Form 2848 nor Form 8821, and the exam tests them because the wrong answer looks so natural.

• Third party designee checkbox: checking the box on the return lets the IRS discuss processing issues with the named person, such as refund status or math errors. It does not allow audit representation, and the authority ends no later than the due date of the following year's return, without regard to extensions.
• Fiduciaries: an executor, administrator, or trustee steps into the taxpayer's place and files Form 56 (Notice Concerning Fiduciary Relationship), not Form 2848.
• Return preparation: preparing and filing a return is not practice before the IRS, so it needs no authorization form.

Think about it this way: a fiduciary is the taxpayer for tax purposes, while a family member helping a parent is an outside representative and needs Form 2848 with designation code f.

How do the CAF unit and tax periods work on both forms?

The IRS records most Form 2848 and Form 8821 filings on the Centralized Authorization File (CAF), which lets IRS employees confirm authority without asking for a paper copy each time. Each representative or designee receives a CAF number after the first recorded authorization.

Tax periods follow strict rules on both forms:

• You must list the specific type of tax, the form number, and the years or periods.
• General references such as "all years" or "all periods" are not accepted.
• Future periods are limited to those ending no later than 3 years after the date the IRS receives the form.
• Spouses who file jointly must each file their own form, because each spouse is a separate taxpayer.

Forms can be submitted online, by fax, or by mail to the CAF unit. A form filed for a one-time issue that does not belong on the CAF can be marked on line 4 so it is not recorded there.

How do you revoke or withdraw an authorization?

A taxpayer revokes a power of attorney by sending the IRS a copy of the form with "REVOKE" written across the top, signed and dated. A representative leaves a case by sending a copy with "WITHDRAW" written across the top, also signed and dated. Form 8821 follows the same pattern for the taxpayer.

But there is a catch. Filing a new Form 2848 for the same matters automatically revokes earlier powers of attorney for those matters. To keep a prior representative, the taxpayer checks the retention box on line 6 and attaches a copy of each earlier form that should stay active. Form 8821 has a matching retention box. Exam questions often describe a taxpayer who hires a second practitioner and then ask whether the first one still has authority. Without the retention box, the answer is no.

Which Form 2848 and Form 8821 traps show up on Part 3?

Part 3 had a pass rate of about 70% in the 2024 to 2025 testing year, based on compiled Prometric score data (the IRS does not publish official rates). Representation forms are a small slice of the exam, but they reward precise reading.

• Entity as representative: a firm can never be named on Form 2848.
• Refund checks: a representative cannot endorse or negotiate them.
• Fiduciary vs representative: executors file Form 56.
• Checkbox overreach: the third party designee cannot handle an audit.
• Automatic revocation: a new form replaces the old one unless line 6 is checked.
• Vague periods: "all years" makes the line invalid.

Here is how a question might frame it. A client signs Form 8821 naming a bookkeeping firm, then asks the firm to request an installment agreement. The firm can view the balance due, but it cannot request the agreement, because that is representation. See how this fits with the rest of the part on the EA Part 3 exam overview, and compare Part 3 with the other sections in the EA exam pass rates by part breakdown.

How should you study this topic for the 2026 EA exam?

Each part of the SEE has 100 questions (85 scored, 15 experimental) in a 3.5-hour appointment, and you need a scaled score of 500 on the 200 to 800 scale to pass. The US window runs from July 1, 2026 to February 28, 2027, and the fee is $317 per part.

A focused plan for this topic looks like this:

1. Build a two-column sheet: list every power under Form 2848 next to the matching limit under Form 8821.
2. Memorize the designation codes and the limits on code h.
3. Drill the exceptions: Form 56, the checkbox, and return preparation.
4. Answer timed questions and review every miss by rule, not by question.

If you are planning the order of your parts, the guide to which EA exam part to take first explains why many candidates sit Part 3 second, and the week-by-week EA study schedule shows where a topic like this fits. VantageEA mocks report your number correct out of 100, with 70 correct as the pass mark, plus an estimated PSI score range. You can test yourself now with a free EA practice test.

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