Form 2848 Power of Attorney: Practitioner Completion and CAF Workflow Guide

Form 2848 is the document that puts you in the room. Before you can call the Practitioner Priority Service line, pull a client's transcript through TDS, respond to an IRS examination notice, or negotiate a collection resolution, the IRS must have a processed Form 2848 on file that names you as the authorized representative. Without it, the IRS will not discuss the account with you, regardless of the circumstances. Getting the form right, knowing how the CAF system works, and choosing the correct submission pathway are the mechanical skills that make every other representation task possible.

This guide is written for independent ERO and PTIN holders, Annual Filing Season Program participants, enrolled agents, and CPAs who file Form 2848 regularly. It covers what the form actually authorizes (and what it does not), who qualifies as a representative under each credential category, how to complete every section without triggering a CAF rejection, the three submission pathways and their 2026 processing timelines, how the CAF number system works, the practical differences between Form 2848 and Form 8821, and the most common completion errors that delay access to IRS systems.

All procedural details, form version references, and processing timelines in this guide should be verified at IRS.gov before relying on them in client engagements. IRS procedures, fax numbers, and online tool requirements are subject to change. This guide is informational and does not constitute legal or tax advice.

What Form 2848 Authorizes: Scope, Limits, and What It Does Not Cover

Form 2848 is the IRS Power of Attorney and Declaration of Representative. A processed Form 2848 authorizes the named representative to act on the taxpayer's behalf before the Internal Revenue Service across virtually every administrative function: examination, collection, Appeals, and access to IRS systems that require an active authorization on the CAF.

What Form 2848 covers

A properly executed Form 2848 authorizes the representative to:

• Represent the taxpayer before IRS Examination, including responding to information document requests, participating in audit interviews, and signing agreements (such as Form 872, consent to extend the statute of limitations) if specifically authorized. For the full correspondence examination representation workflow -- including the Form 2848 first-response protocol, IDR assembly, and Exam Document Upload Tool -- see the IRS correspondence examination practitioner guide.
• Represent the taxpayer before IRS Collection, including communicating with Revenue Officers, proposing and negotiating collection alternatives, and receiving IRS notices and correspondence on the taxpayer's behalf. Form 2848 is required before calling the Practitioner Priority Service line on a client's account. See the PPS line guide for tax preparers for how to use the PPS line once authorization is in place.
• Represent the taxpayer before IRS Appeals, including filing a protest, participating in an Appeals conference, and negotiating a settlement. Note: the /irs-examination-appeals-tax-practitioner-guide.html page does not yet exist on this site; when it does, it will cover the full Appeals workflow.
• Access the Transcript Delivery System (TDS), which allows the representative to pull account transcripts, return transcripts, wage and income transcripts, and record of account transcripts electronically. TDS access requires an active Form 2848 on the CAF. See the IRS transcripts guide for practitioners for how to use TDS and what each transcript type shows.
• Receive IRS notices and correspondence that the IRS sends to the taxpayer, when the form specifies that copies should go to the representative. This is separate from the right to act: a representative who receives copies of notices can review them and advise the client, but receiving a copy is not the same as having authority to respond on the taxpayer's behalf, which requires the authorization that Form 2848 provides.

What Form 2848 does not authorize

Form 2848 operates entirely within the IRS administrative system. It does not extend beyond it, and practitioners need to be precise about its limits:

Form 2848 also does not authorize the representative to receive the taxpayer's federal tax refund check (a separate Power of Attorney under state law and different IRS procedures governs that), does not authorize the filing of a Tax Court petition on the taxpayer's behalf absent Tax Court admission, and does not override the practice limits that apply to specific credential categories under Circular 230.

Acts that require specific authorization

Certain acts are not automatically included in a Form 2848 authorization. The representative must check the applicable box in Line 5a or provide a specific written authorization in Line 5b to perform any of the following:

• Signing tax returns on behalf of the taxpayer (only in limited circumstances permitted by IRS regulations)
• Receiving (but not negotiating) a refund check issued to the taxpayer
• Substituting or adding a representative to the existing authorization
• Executing a closing agreement
• Disclosing tax return information to a third party

If a specific act is not authorized on the face of the form, the representative cannot perform it under the Form 2848 authorization. If the situation changes and additional authority is needed, a new or amended Form 2848 with the required authorization is the correct approach.

Who Can Be Listed as a Representative: The Seven Categories Under Part II

Part II of Form 2848 is the Declaration of Representative. The person listed as representative must qualify under one of seven categories defined in the instructions to Form 2848. The category designation matters because it determines the scope of practice rights the representative holds before the IRS. The IRS will not process a Form 2848 where the representative's credential does not match the category claimed. See the IRS representation rights comparison guide for a full breakdown of which credentials authorize which actions before which IRS divisions.

Section-by-Section Completion Guide: Every Field That Matters

Form 2848 is a two-part document. Part I is the Power of Attorney, completed by or on behalf of the taxpayer. Part II is the Declaration of Representative, completed and signed by the representative. Both parts must be complete and signatures must be present for the CAF unit to process the form. A form missing any required field will be rejected or returned without processing.

Part I, Line 1: Taxpayer information

Line 1 requires the taxpayer's name, address, SSN or EIN (or ITIN), daytime telephone number, and plan number if applicable. For individual taxpayers, use the name as it appears on their most recently filed tax return. For married couples where both spouses are granting authorization, both spouses must appear on the form and both must sign. You cannot combine two separate authorizations on a single form by listing one spouse as the "taxpayer" and the other in the address field; the form must properly identify both parties if both are granting POA.

For business entities, the EIN goes in the taxpayer identification number field. If the taxpayer has both an SSN and a business EIN (for example, a sole proprietor with a Schedule C), enter both if the authorization covers both individual and business tax matters, or specify which applies on Line 3.

Part I, Line 2: Representative information

Line 2 requires the name, address, telephone number, fax number, and CAF number for each representative named. Up to four representatives can be listed on a single Form 2848. For a representative filing their first Form 2848, write "None" in the CAF number field; the IRS will assign a number after processing and mail it to the address on file. For subsequent filings, enter the assigned CAF number. Using the wrong CAF number, or leaving the field blank on subsequent filings, creates a mismatch in the CAF database that can complicate TDS and PPS access.

The PTIN field for the representative on Line 2 is required for representatives who are return preparers with PTINs. Omitting the PTIN when one has been issued is a common processing error. The IRS uses the PTIN to cross-reference the representative's credential status in the Return Preparer Office database.

Part I, Line 3: Tax matters

Line 3 is the scope definition of the authorization. It requires three pieces of information for each tax matter covered: the type of tax (for example, Form 1040, Form 941, Form 1120), the tax form number, and the year or period. All three must be specific. Overly broad year coverage (for example, "all years" or "any period") is a common rejection trigger. The IRS requires specific year designations for each period the authorization covers.

Part I, Line 4: Specific use not recorded on CAF

Line 4 is checked when the Form 2848 is for a specific one-time use that should not be recorded in the CAF system (for example, a specific transaction or a single administrative hearing). Most practitioners leave Line 4 unchecked, meaning the authorization is general and will be recorded on the CAF. Checking Line 4 means the authorization will not be stored in the CAF and will not appear in TDS or PPS lookups. This is rarely the correct choice for a standard representation engagement.

Part I, Line 5a: Acts authorized

Line 5a grants the representative all the acts described in the Form 2848 instructions unless specific acts are removed in Line 5b. The default authorization covers receiving confidential information, representing the taxpayer in IRS proceedings, and executing agreements. If the practitioner needs to authorize additional specific acts (signing the return, receiving a refund check, substituting another representative), those are listed in Line 5b as additions.

Part I, Line 6: Retention and revocation of prior authorizations

By default, submitting a new Form 2848 automatically revokes any earlier Form 2848 on file for the same tax matters and periods. Line 6 provides the option to retain a prior POA by listing the retained representative's name, address, and CAF number. If you are joining a representation where another representative should remain active, you must explicitly retain the prior authorization in Line 6. Failure to do so will revoke the prior representative's authority when the new form is processed, which can create gaps in representation coverage or cause compliance problems if the prior representative was handling ongoing proceedings.

Part I, Line 7: Taxpayer signature

The taxpayer must sign and date Part I under penalties of perjury. For joint returns where both spouses are granting authorization, both must sign. For business entities, an officer with authority to bind the entity signs, and their title must be stated. An unsigned Part I is the most fundamental rejection trigger: the IRS will not process any Form 2848 where the taxpayer's signature is missing. The signature date must be on or before the submission date.

Part II: Declaration of Representative

Part II is completed and signed by the representative, not the taxpayer. The representative selects the appropriate designation letter (a through g, as described in the prior section), enters their licensing jurisdiction and license number or credential identifier, and signs under penalties of perjury. Part II certification is a declaration that the representative is authorized to practice before the IRS under the category selected and has not been suspended or disbarred from practice. Signing Part II when disqualified from practice is a separate ethics violation under Circular 230. For the representative's PTIN entry: if the representative is a PTIN holder, the PTIN goes in the designated PTIN field in Part II, not only in Line 2.

CAF Number Tax Preparer Guide: How the Centralized Authorization File Works

The Centralized Authorization File is the IRS database that stores all processed power of attorney and tax information authorizations. When the CAF unit processes a Form 2848, it creates a record in the CAF that ties the representative's CAF number to the taxpayer's account for the specified tax matters and periods. That record is what allows TDS to deliver transcripts and PPS to verify authorization when you call. The CAF is not instant: a processed Form 2848 that was submitted by fax or through the e-Services Upload portal may take several weeks to appear in the CAF database. Tax Pro Account submissions are the exception, as described in the submission pathway sections below.

How to obtain a CAF number for the first time

A CAF number is assigned automatically when you file your first Form 2848 or Form 8821. You do not apply for a CAF number separately. On your first submission, write the word "None" in the CAF number field on Line 2. The IRS will process the form, assign your CAF number, and mail it to the address listed for the representative on Line 2. Keep this number permanently; it is your identifier in the CAF system for every authorization you file throughout your practice career.

The CAF number is not the same as your PTIN. Your PTIN identifies you as a return preparer. Your CAF number identifies you as an authorized representative in the CAF database. Some practitioners are surprised to find they have both; others who have represented clients but not prepared returns may have a CAF number without a PTIN. Both numbers serve distinct functions and both are required in the fields that call for them on Form 2848.

How to look up an existing CAF number

If you have filed Form 2848 before but cannot locate your CAF number, check the following sources in order:

• A prior Form 2848 you filed: your CAF number appears in Line 2 on any form where it was included.
• Your Tax Pro Account: if you have set up an IRS Tax Pro Account, your CAF number is displayed in the account dashboard.
• The IRS Practitioner Priority Service line: PPS can verify your CAF number during a call. You will need to authenticate your identity through the normal PPS verification process.

What to do if your CAF number is wrong in IRS records

CAF number errors can occur in several ways: a Form 2848 was processed under an incorrect CAF number, a data entry error at the CAF unit created a different number than the one assigned, or an early filing was processed before a number was assigned and the connection was not made. If you discover a discrepancy between your assigned CAF number and what appears in the IRS system, contact the CAF unit directly. You will need to provide:

• Your correct CAF number
• Your PTIN
• Your address of record on file with the IRS
• Identifying information about the specific authorization(s) affected (taxpayer name, SSN or EIN, and tax periods)

Resolving a CAF number discrepancy is time-sensitive when it is blocking transcript or PPS access in an active client matter. In urgent situations, the PPS line may be able to verify authorization manually while the CAF correction is pending. Contact information and operating hours for the CAF unit are published at IRS.gov.

Submission Pathway 1: IRS Tax Pro Account (Fastest Option in 2026)

Tax Pro Account is the IRS online portal for credentialed tax professionals. It provides the fastest Form 2848 submission pathway available in 2026. When a Form 2848 is submitted through Tax Pro Account and the taxpayer approves it via their IRS online account, the authorization can appear in the representative's Tax Pro Account within minutes to hours rather than the weeks required for fax or e-Services Upload submissions.

Prerequisites for Tax Pro Account submission

In addition to the taxpayer's ID.me prerequisite, the representative must have an IRS Tax Pro Account, which itself requires an IRS online account with ID.me verification, active credentials (EA enrollment card number, CPA license, or bar membership), and an active CAF number on file. Setting up the Tax Pro Account for the first time requires allowing time for IRS verification of credentials; this is not a same-day process. See the IRS e-Services guide for tax professionals for the full Tax Pro Account setup process and what each e-Services tool provides.

How the Tax Pro Account submission workflow operates

The representative initiates the authorization request in Tax Pro Account by entering the taxpayer's identification information and the tax matters and periods the authorization covers. The IRS then sends a notification to the taxpayer's IRS online account. The taxpayer logs in, reviews the authorization request, and approves or declines it. Once the taxpayer approves, the authorization is reflected in the representative's Tax Pro Account and the CAF is updated without the representative needing to mail or fax a signed paper form.

This workflow eliminates the physical signature collection step for the taxpayer, the mailing or faxing step, and the CAF processing wait. For clients who have completed ID.me, it is the correct default pathway in 2026. For clients who have not completed ID.me, the e-Services Upload or fax pathway remains the option.

Tax Pro Account limitations to be aware of

Tax Pro Account online submissions have scope limitations compared to a paper Form 2848. As of the 2026 filing season, some authorization types and tax matter combinations may not be available through the online pathway. Verify the current scope of Tax Pro Account authorization requests at IRS.gov before assuming a specific authorization can be completed through this pathway. If the online tool does not support the specific tax matter or period range needed, the e-Services Upload or fax pathway is the fallback.

Submission Pathway 2: IRS e-Services Upload Portal

The IRS e-Services Upload portal allows practitioners to submit a signed, scanned Form 2848 (and other authorization forms) electronically rather than by fax. The upload pathway requires an active e-Services account but does not require the taxpayer to have an IRS online account or ID.me verification, making it the correct pathway for clients who have not completed ID.me but where the practitioner has e-Services access.

File format and preparation requirements

The IRS accepts PDF files for e-Services Upload submissions. The form must be fully completed and signed by the taxpayer in Part I and by the representative in Part II before scanning. The IRS does not accept fillable PDFs that have not been printed and signed; the submission must show actual signatures. Verify the current accepted file formats and size limits at IRS.gov before submission, as the portal's technical requirements can be updated.

Best practices for scan quality: scan at minimum 300 DPI, confirm all text is readable (especially the SSN, EIN, and CAF number fields), and confirm both signature sections are legible. A low-quality scan that makes key fields illegible will not process successfully, adding delay to an already slower pathway.

Processing timeline

e-Services Upload processing time is generally faster than fax to the CAF unit, but is still measured in days to weeks rather than the near-real-time processing of Tax Pro Account submissions. During peak filing season (January through April), processing times for all non-Tax-Pro-Account pathways extend. Plan accordingly when a matter is time-sensitive. There is no automated confirmation of successful CAF processing; practitioners verify processing by checking authorization status in the Tax Pro Account dashboard or through a PPS call.

Submission Pathway 3: Fax to the CAF Unit

Faxing a completed Form 2848 directly to the CAF unit is the legacy pathway and remains the fallback for practitioners who do not have e-Services access or whose clients cannot use the Tax Pro Account pathway. The correct fax destination depends on the taxpayer's state of residence or, for international filers, their country of residence.

CAF unit fax routing by state (as of 2026-06-08; verify at IRS.gov before faxing)

Processing timeline and confirmation

CAF processing for faxed forms is typically measured in weeks under normal conditions. During peak filing season (January through April), processing times extend further. The IRS does not send a formal acknowledgment that a faxed Form 2848 has been received and processed. Practitioners confirm processing by checking their Tax Pro Account dashboard for active authorizations, or by calling the PPS line on a specific client matter and verifying that the IRS representative can see the authorization on the account.

A practical point on timing: if you need TDS transcript access or PPS access for a time-sensitive client matter and are using the fax pathway, factor in the CAF processing delay when setting client expectations. A Form 2848 faxed during January or February may not be reflected in the CAF for several weeks.

Form 2848 vs. Form 8821: When to Use Each Authorization

Form 2848 (Power of Attorney) and Form 8821 (Tax Information Authorization) are both CAF-recorded authorizations, but they grant fundamentally different levels of authority. The distinction matters because filing the wrong one for the situation either overgrants authority the situation does not require, or underpowers you relative to what the work requires. See the detailed Form 8821 vs. Form 2848 comparison guide for a full side-by-side analysis.

TDS transcript access under each authorization

Both Form 2848 and Form 8821 enable TDS transcript access once the authorization is recorded in the CAF. The practical difference is that a Form 2848 enables everything a Form 8821 enables, plus representation. A practitioner who has filed Form 2848 for a client does not need to also file Form 8821 to access transcripts; the POA authorization covers transcript access. See the IRS transcripts guide for practitioners for the TDS workflow, transcript types, and how to read what each transcript contains.

A common practical question arises when a return preparer wants transcript access for a client before any dispute exists: should they file Form 2848 or Form 8821? If the practitioner has the credentials to represent the client and expects to do so if needed, Form 2848 is the correct choice because it covers both transcript access and representation if the situation escalates. If transcript access is the only goal and the practitioner will not represent the client in any proceeding, Form 8821 is the narrower and more appropriate authorization.

Managing Active POAs: Checking, Revoking, and Retention Requirements

Active Form 2848 authorizations accumulate over a practice career. An authorization filed for a client in a prior year may still be active in the CAF database years later unless it was explicitly revoked. Managing your active authorizations is both a practice management function and an ethics obligation under Circular 230.

Checking active authorizations in the Tax Pro Account dashboard

The Tax Pro Account dashboard displays all CAF-recorded authorizations associated with the practitioner's CAF number, including their taxpayer names, tax periods, and authorization dates. This is the most efficient way to audit the full list of active authorizations. Practitioners should review their active authorization list periodically, particularly at the start and end of each filing season, to identify authorizations for clients where the engagement has ended and revocation is appropriate.

How to revoke an authorization when a client relationship ends

Revoking a Form 2848 authorization when the client relationship ends is a standard practice hygiene step that many practitioners skip. An active Form 2848 for a former client creates a potential obligation: the IRS can send notices and correspondence to the address on file for the representative on active authorizations. Receiving notices for former clients creates administrative burden and potential confusion.

To revoke an authorization submitted by the practitioner: write the word "REVOKE" across Part I of the previously filed Form 2848, sign and date it, and submit it to the CAF unit via the same fax or upload pathway used for the original. The revocation can also be submitted through the Tax Pro Account dashboard in some cases. Alternatively, the taxpayer may revoke the authorization by writing a statement to the IRS identifying the taxpayer, the representative, the CAF number, and the tax periods the revocation covers.

Retention requirements under Circular 230

The three-year minimum is a floor, not a target. For complex representation matters (collection resolution, examination, Appeals), retaining the complete file including the Form 2848 for the full period of limitations on assessment and collection is the prudent practice. For examination cases, the statute of limitations on assessment is generally three years from the later of the return due date or filing date, extended to six years for substantial omissions of income. For collection, the collection statute expiration date is ten years from assessment. A representation file for a complex collection matter may warrant retention well beyond three years.

Common Errors and Rejections: What Causes CAF Processing Failures

The IRS CAF unit processes a high volume of Form 2848 submissions. Incomplete or incorrect forms are returned without processing, which means the authorization is not active and the practitioner has no IRS access for that client matter until a corrected form is processed. The following are the most frequent causes of rejection and return, all of them preventable with a pre-submission checklist review.

Frequently Asked Questions

Related Practitioner Guides

Form 2848 is the authorization layer that makes all IRS representation work possible. These guides cover the representation functions it unlocks:

• IRS transcripts guide for practitioners: TDS workflow, transcript types, and how to use wage and income transcripts in return preparation and representation
• Practitioner Priority Service guide: how to use the PPS line, what it can and cannot do, and the authentication process
• Form 8821 vs. Form 2848 comparison: full side-by-side of authority granted, CAF recording, and when each form is the correct choice
• IRS e-Services guide for tax professionals: Tax Pro Account setup, e-Services tools available to practitioners, and TDS access
• Circular 230 guide: the full text of practitioner obligations including representation rights, retention requirements, and ethical duties
• IRS representation rights comparison guide: which credentials authorize which actions before which IRS divisions
• Form 433-A and 433-B collection information statement guide: the financial disclosure work that happens after Form 2848 is on file and collection representation begins
• IRS audit representation guide for preparers: how to handle an examination from initial notice through IDR response, with Form 2848 as the foundational authorization
• IRC 7521: Taxpayer Rights During IRS Interviews: how Form 2848 authorization intersects with the IRC 7521 right to representation, suspension of interview, and recording rights