SEE Part 3 representation explained

Updated September 21, 2026

Representation before the IRS is worth 25 of the 85 scored questions on SEE Part 3 (about 29%). It covers the paperwork that lets you act for a client — Form 2848, Form 8821 and the CAF system — and the preliminary work of building a case: identifying the issue, assessing finances, finding authority and watching deadlines.

Form 2848 versus Form 8821

The single most tested distinction in this domain.

Form 2848Form 8821
NamePower of Attorney and Declaration of RepresentativeTax Information Authorization
GrantsRepresentation and access to informationAccess to information only
Who can be namedOnly people eligible to practise (attorney, CPA, EA and the limited categories)Any individual or organisation
Can act for the taxpayerYes — sign agreements, consents, waiversNo
Effect on earlier formsRevokes earlier 2848s for the same matters unless you check the box to keep them and attach copiesFiling a 2848 does not revoke an 8821

A representative on Form 2848 may, by default, receive confidential information and perform any act the taxpayer can perform for the listed matters — including signing a consent to extend the assessment period or a closing agreement. The form sets out what needs specific authorisation on line 5a:

  • Substituting or adding another representative
  • Signing the taxpayer’s return
  • Consenting to disclosure of return information to a third party
  • Using an intermediate service provider to access records

And one thing no representative may ever do: endorse or negotiate the taxpayer’s refund check, or have a refund directed into an account the representative controls.

Details worth memorising

  • Up to four representatives can be named on the form; no more than two can receive copies of IRS notices for the same matter.
  • Future periods are recorded on the CAF only up to three years after December 31 of the year the IRS receives the form. Past periods can be listed without limit.
  • If the taxpayer signs first, the representative must sign within 45 days (60 days for taxpayers abroad).
  • A non-IRS power of attorney, including a durable power under state law, is acceptable if it contains the required information, but it cannot be recorded on the CAF without a completed Form 2848 attached.

Signing a return for the taxpayer

A representative may sign an income tax return only in three situations under the regulations: disease or injury, continuous absence from the United States for at least 60 days before the due date, or specific permission from the IRS for other good cause. The authority must be granted on the 2848, and the form is attached to the return.

Changing, revoking and withdrawing

  • A taxpayer revokes by writing “REVOKE” across the top of the first page with a current signature and date, by a signed statement of revocation, or by filing a new 2848 for the same matters.
  • A representative withdraws by writing “WITHDRAW” across the first page, signing and dating it, or by a written statement identifying the matters and periods.

The CAF number

The Centralized Authorization File lets IRS staff confirm your authority without the original document. A CAF number is a unique nine-digit number the IRS assigns to a representative — it is not your SSN, PTIN or enrollment number. You do not need one to submit your first 2848; write “None” and the IRS assigns it.

Specific-use authorisations, such as private letter ruling requests and FOIA requests, are not recorded on the CAF.

Publication 216, Conference and Practice Requirements, sets out the rules for conferences: a valid authorisation on file before you discuss a client’s matter, and eligibility to practise before you represent.

Building the case

The outline treats preliminary work as its own topic. Before you act:

  1. Identify the issue and the facts. Pull transcripts through e-Services or your Tax Pro Account.
  2. Screen for criminal exposure. The practitioner privilege does not apply in criminal matters; refer the client to a criminal tax attorney.
  3. Check competence, capacity and conflicts.
  4. Assess the client’s finances — ability to pay, bankruptcy, garnishments, assets, insolvency — which decides between full pay, installment agreement, offer in compromise and currently not collectible.
  5. Gather documentation: statements, receipts, legal documents, prior and later returns, corporate minutes.

Know the hierarchy: the Internal Revenue Code, then regulations, then revenue rulings and procedures, and case law. A private letter ruling binds only the taxpayer who requested it. The Internal Revenue Manual guides IRS staff but is not authority a taxpayer can rely on. IRS publications and forms are helpful but non-authoritative.

Statutes of limitations

ClockGeneral rule
Assessment3 years from the later of filing or the due date; 6 years for a substantial omission of income; unlimited for fraud or no return
Collection10 years from assessment
Refund claimLater of 3 years from filing or 2 years from payment

Also in scope

Math-error and under-reporting notices, FOIA requests, avoidance versus evasion, identity theft, the Taxpayer Advocate Service (for significant hardship or when normal channels have failed), and the limit of EA practice: non-attorneys must pass the Tax Court’s own examination to practise there.

Sample questions

Question 1. A small-business owner wants her bookkeeper, who is not an attorney, CPA or enrolled agent, to be able to call the IRS and get copies of her account transcripts. She does not want the bookkeeper to represent her. Which form should she file?

  • A. Form 2848
  • B. Form 8821
  • C. Form 8879
  • D. Form 12153
Show answer

Answer: B

Form 8821 authorises any individual or organisation to receive and inspect confidential tax information without granting any authority to represent. Form 2848 is for representation and can only name someone eligible to practise. Form 8879 is an e-file signature authorisation, and Form 12153 requests a collection hearing.

Question 2. A taxpayer will be working overseas for the next five months, including the filing deadline. Under what condition may his enrolled agent sign his income tax return?

  • A. The agent may sign any return for a client once a Form 8821 is filed
  • B. The taxpayer calls the IRS to give verbal permission
  • C. The agent uses the taxpayer’s self-select PIN
  • D. The 2848 grants authority to sign, and the absence is at least 60 days before the due date
Show answer

Answer: D

The regulations allow another person to sign a return for continuous absence from the United States for at least 60 days before the due date, among other limited reasons. The authority must be granted on Form 2848 and the form attached to the return. A general power of attorney alone, a phone call or an e-file PIN does not meet the requirement.

Question 3. Which statement about a CAF number is correct?

  • A. It is a unique number the IRS assigns to a representative, distinct from the PTIN
  • B. It must be obtained before a first Form 2848 can be filed
  • C. It is the same as the representative’s enrollment number
  • D. It is the number used to transmit electronic returns
Show answer

Answer: A

A CAF number is a unique nine-digit number the IRS assigns to a representative, separate from the SSN, PTIN and enrollment number. It is not required before filing a first 2848, and it is not the same as an EFIN, which identifies an e-file provider.