A CPA power of attorney is the authorization that lets your Certified Public Accountant deal directly with the IRS on your behalf, and it is granted by filing IRS Form 2848. Without it, federal law bars the IRS from sharing any of your confidential tax information with your accountant, even if you’ve been working together for years.1Office of the Law Revision Counsel. 26 USC 6103 – Confidentiality and Disclosure of Returns and Return Information Once Form 2848 is on file and processed, your CPA can receive your records, represent you in an audit, negotiate with the IRS, and handle most procedural steps so you don’t have to appear yourself.
Filling Out Form 2848 Without Getting It Rejected
Form 2848 is titled “Power of Attorney and Declaration of Representative.”2Internal Revenue Service. About Form 2848, Power of Attorney and Declaration of Representative It has two working halves: the taxpayer identifies themself and grants authority; the CPA declares their professional credentials and accepts the rules of IRS practice.
You provide your full legal name, mailing address, and taxpayer identification number. For an individual that’s your Social Security Number or ITIN; for a business it’s the EIN. Your CPA fills in their name, address, phone, and their Centralized Authorization File (CAF) number, a nine-digit ID the IRS assigns the first time a tax professional files any third-party authorization.3Internal Revenue Service. What Is a CAF Number
The section that gets forms bounced back is the tax matters description. You have to name the exact type of tax and the exact periods being authorized. Write “Income Tax (Form 1040)” and the specific year, or “Employment Tax (Form 941)” and the specific quarter. Generic entries like “all years,” “all periods,” or “all taxes” are not accepted and the form will be returned.4Internal Revenue Service. Instructions for Form 2848 – Power of Attorney and Declaration of Representative
Both you and your CPA must sign. Your signature grants the authority; the CPA’s signature in the Declaration of Representative section confirms professional standing. Missing either signature means the form is incomplete.
When Form 8821 Is Enough Instead
If you only need someone to look at your tax records or receive copies of your transcripts, Form 8821 (Tax Information Authorization) is the lighter option. It grants access to confidential tax information for specific tax types and periods, but it does not authorize representation, argument, or action with the IRS.5Internal Revenue Service. About Form 8821, Tax Information Authorization
Form 8821 is read-only. Form 2848 is read-and-act. A mortgage lender verifying your income uses Form 8821. A CPA defending you in an audit needs Form 2848. Filing one does not touch the other, and a new Form 2848 will not revoke an existing Form 8821.6Internal Revenue Service. Instructions for Form 2848
What Your CPA Can Do Once It’s On File
CPAs, enrolled agents, and attorneys hold what the IRS calls unlimited representation rights, meaning they can represent you on audits, payment and collection issues, and appeals.7Internal Revenue Service. Understanding Tax Return Preparer Credentials and Qualifications The underlying authority is Treasury regulation 31 CFR 10.3, which lets any CPA not under suspension or disbarment practice before the IRS after filing a written declaration of qualifications.8eCFR. 31 CFR 10.3 – Who May Practice
In practice, your CPA can receive and review your confidential returns and records, attend IRS meetings in your place, and handle correspondence. Federal law prohibits the IRS from requiring you to attend an interview when your representative holds a valid written power of attorney, and you can pause any interview at any point to consult your CPA before continuing.9Office of the Law Revision Counsel. 26 USC 7521 – Procedures Involving Taxpayer Interviews
Your CPA can also execute waivers during complex audits, including extensions of the statute of limitations on assessment, and can sign settlement documents such as Form 870, a waiver that lets the IRS assess a deficiency without going to Tax Court.10Internal Revenue Service. Form 870 – Waiver of Restrictions on Assessment and Collection of Deficiency in Tax
What Your CPA Cannot Do
Three limits are built into Form 2848 and cannot be overridden by anything you write on it.
- Your CPA cannot endorse, cash, or redirect any government-issued refund check or payment on a federal tax liability, including directing electronic payments into accounts they control.4Internal Revenue Service. Instructions for Form 2848 – Power of Attorney and Declaration of Representative
- Your CPA generally cannot sign your income tax return. The narrow exceptions are that you are too ill or injured to sign, you have been outside the United States for at least 60 days before the filing deadline, or the IRS grants specific permission for another good cause. Even then, you must check the box on line 5a and attach a written explanation.4Internal Revenue Service. Instructions for Form 2848 – Power of Attorney and Declaration of Representative
- Your CPA cannot substitute another representative unless you specifically grant that power on the form. Without it, they cannot hand your case off to a colleague or bring in another professional under your existing POA.
The return-signing restriction catches people off guard when they travel. If you know you will be out of the country during filing season, plan ahead and check line 5a before you leave.
Signing for a Corporation, LLC, or Trust
When the taxpayer is a business or trust rather than an individual, the person who signs Form 2848 must have legal authority to act for the entity. The form permits a corporate officer, partner, partnership representative, executor, trustee, receiver, or administrator to sign, and the signer certifies on the form that they hold that authority.11Internal Revenue Service. Form 2848, Power of Attorney and Declaration of Representative
For electronic submissions on behalf of an entity, the tax professional submitting the form has to confirm through documentation that the signer actually has authority.4Internal Revenue Service. Instructions for Form 2848 – Power of Attorney and Declaration of Representative If a CFO signs but the corporate bylaws reserve that power for the CEO, the IRS can reject the form. Whoever signs should match your entity’s governing documents.
How to Submit and How Long Processing Takes
You have three ways to file: online through the IRS Tax Pro Account, by fax, or by mail. The online route offers real-time processing for individual authorizations and lets tax professionals view active authorizations and withdraw without extra paperwork.12Internal Revenue Service. Submit Forms 2848 and 8821 Online Only one form can be submitted at a time (even for married-filing-jointly couples), and attachments are capped at 15 MB in PDF, JPG, or GIF format.
If a specific IRS function has already contacted you about an exam or appeal, send the POA to the agent or office handling your case. Otherwise, mail or fax it to the CAF unit for your state. The IRS routes filings among CAF centers in Memphis, Ogden, and Philadelphia, with published addresses and fax numbers.4Internal Revenue Service. Instructions for Form 2848 – Power of Attorney and Declaration of Representative
As of 2026, the IRS estimates processing takes about seven business days after receipt regardless of submission method.13Internal Revenue Service. Processing Status for Tax Forms Your CPA gets confirmation once the authorization is active in the CAF system.
Revoking or Replacing the Authorization
You can end your CPA’s authority at any time. The simplest method is to send a copy of the original Form 2848 to the IRS with “REVOKE” written across the top, signed and dated below your original signature. If the original is gone, a written statement identifying the taxpayer, the representative, and the tax matters and periods being revoked also works.6Internal Revenue Service. Instructions for Form 2848
If you’re switching to a new CPA, filing a new Form 2848 covering the same tax matters and periods automatically revokes earlier POAs on file for those matters, unless you check the box on line 6 to keep the prior authorizations in place.11Internal Revenue Service. Form 2848, Power of Attorney and Declaration of Representative That box matters more than most people realize. If you want two representatives working the same issue at once, check it on the second filing or the first CPA’s authority disappears. You are also responsible for telling any former representative that their authority has ended.
Your CPA can withdraw as well, whether for a professional conflict or a breakdown in communication. Withdrawal requires a signed statement to the IRS office that processed the original POA, identifying the taxpayer, the CPA, and the specific tax types and periods. Whether the authority ends through your revocation or the CPA’s withdrawal, it takes effect only once the IRS receives and processes the notification.
State Tax Agencies Need Their Own Form
Form 2848 covers the IRS only. If your CPA also needs to deal with your state tax agency, you will typically need a separate state-specific power of attorney form. Most states will not accept the federal Form 2848 as a substitute, and form numbers, requirements, and processing times vary by state. Check with your state’s revenue department for the correct form before your CPA needs to act at the state level.