IRS Form 8821: What It Does, How to File It, and When to Use It Instead of Form 2848

Form 8821 is a simple one-page IRS form. Through this form, you can name a third-party tax representative and grant them access to view your confidential tax information. Form 8821, unlike IRS Form 2848, does not grant them the right to act on your behalf.

You may use IRS Form 8821 to let your accountant access your tax information to view your transcripts, let your lender verify your tax information to confirm your income, or let us access IRS records to resolve issues with your EIN (Employer Identification Number).

IRS Form 8821 does not grant power of attorney to your designee. Through IRS Form 8821, your designee cannot represent you before the IRS, nor can they negotiate with the IRS or make any decision on your behalf. IRS Form 2848 is used for those purposes. In other words, IRS Form 8821 does not grant access to the vault where the IRS keeps your confidential tax information. Rather, IRS Form 8821 gives them a library card.

What Form 8821 Actually Authorizes

Any person, corporation, firm, business partner, or organization that you name on Form 8821 can be given the power to examine your tax information and receive that information in writing or in person.

This power can be granted for specific types of tax, years, or periods. It can cover transcripts, account balances, notice details, and any communication with the IRS. You can also authorize your designee to receive copies of IRS notices.

Your designee cannot communicate with the IRS on your behalf or represent you before the IRS. For that, you will have to file Form 2848. Form 2848 also requires your designee to be in a certain profession, such as a CPA or an attorney.

There is no such requirement on Form 8821. This form can be given to anyone, for example, your partner, a family member, or a formation company.

Form 8821 vs. Form 2848: Which One Do You Need?

	Form 8821	Form 2848
View tax records	Yes	Yes
Receive IRS notices	Yes (if box checked)	Yes
Speak with the IRS on your behalf	No	Yes
Negotiate or sign agreements	No	Yes
Designee licensing requirement	None	CPA, attorney, EA, or other listed professional
Recorded on the CAF system	Usually yes	Yes

Many business owners mix up these forms, causing unnecessary delays. We see founders send Form 2848 when Form 8821 was needed, and vice versa. If your transcripts need to be pulled or your EIN needs to be verified to determine if it is active, send Form 8821. If transcripts need to be pulled and the requester needs to speak to the IRS on your behalf, send Form 2848.

How to Complete Form 8821 Without Getting It Rejected

Form 8821 is a one-page form and is frequently kicked back by the IRS. Here is how to fill it out.

Line 1: Taxpayer Information

Provide your full legal name, address, and taxpayer identification number (TIN). For individuals, this is the SSN or ITIN. For businesses, the TIN is the same as the EIN. The IRS should have this on record.

Line 2: Designee Information

Provide the full legal name, address, and CAF number (if applicable) of the designee. If the designee does not have a CAF number, write “NONE,” and the IRS will assign one to the designee.

Do not list yourself as both taxpayer and designee. The IRS will not process that.

Line 3: Tax Information

Rejections usually happen here. Line 3 has four columns.

• Column (a): Type of tax. Options include Income, Employment, Payroll, Excise, Estate, Gift, and Civil Penalty. Do not create your own label.
• Column (b): The specific form number. Examples include 1040, 1120, 1120-S, 941, 940.
• Column (c): Years or periods. Be specific. Write “2023.” Range writing is acceptable. You could write “2022 to 2024.” Write “Q1 2024 to Q3 2025” for quarters. No blanket statements.
• Column (d): Optional, but helpful. You could write “941 deposit inquiry” or “EIN verification for 2023.”

Line 4: Specific Use

Check the box in Line 4 only when the authorization is one-time and is not meant to be recorded in the CAF system.

Line 5: Retention of Prior Authorizations

If you want prior Form 8821 authorizations to stay on record, this box must be checked, and all prior forms must be attached. If the box is not checked and the forms are not attached, the IRS will revoke all prior authorizations for the same tax matters when the new one is processed.

Signature Line

If you are mailing or faxing Form 8821 to the IRS, you will need to provide a traditional ink signature. If you are filing Form 8821 online, you can provide a typed signature.

How to Submit Form 8821

You have three options: online, fax, or mail.

Online via IRS Tax Pro Account

The quickest option is to submit Form 8821 online via the IRS Tax Pro Account. This option provides immediate processing. You can access the portal at IRS.gov/Submit8821. You must first log in to your IRS account to access this submission option.

By Fax

The IRS has different fax numbers depending on the state associated with your address. If your address is in an eastern state, fax Form 8821 to the Memphis CAF Unit at 855-214-7519. For Western states, fax to the Ogden CAF Unit at 855-214-7522. If you are filing from an address outside the United States, contact the International CAF Unit at 855-772-3156 (from within the U.S.) or 304-707-9785 (from outside the U.S.).

The IRS generally processes Form 8821 submitted by fax within 10 business days.

By Mail

If you are mailing Form 8821, you must send it to the same CAF units based on your state. Processing via mail is slower than fax and can take several weeks. If you need access to records quickly, choose online submission or fax.

Common Mistakes That Get Form 8821 Rejected or Delayed

Writing “all years” in Column (c). The IRS will not accept that. You need to provide specific years or a defined range.

Here are a few other common errors:

Not checking the notice copy box. Missing this checkbox means your accountant or formation agent will not receive copies of notices that may require a response. The box next to your designee’s name is easily overlooked.

One form for joint filers. A separate Form 8821 is required for each spouse, even when designating the same designee.

Check Line 4 when ongoing CAF access is needed. This line should not be checked if your designee will be requesting transcripts through IRS e-Services or TDS on a regular basis. Checking this line means you are requesting that the designee’s information not be entered into the IRS CAF.

Wrong fax number. The Eastern and Western CAF units have separate fax numbers. Sending to the wrong unit will not void the filing but will delay access.

Leaving the signature date blank. No date means the filing will be returned.

How Long Does Form 8821 Stay Valid?

Form 8821 does not have an expiration date, which means it remains valid indefinitely unless you revoke it.

To revoke it, write “REVOKE” at the top of a copy of the original form, sign it, and date it. Submit it to the same CAF unit where you submitted the original form.

If you are a tax professional and your client wants to revoke your access, the same procedure applies. This is worth considering when offboarding a client. An old, unrevoked Form 8821 is a minor compliance issue, but it may become a bigger problem.

Form 8821 for Non-Resident Founders

If you are a non-U.S. resident with a U.S. LLC or corporation, you will probably need this form at some point. Form 8821 allows a third party to access your information without requiring a full power of attorney. This may be a CPA requesting your federal tax transcripts or us requesting access to your IRS account to fix an EIN issue.

For international filers, use the International CAF Unit fax number: 304-707-9785 from outside the U.S. Submissions sent to domestic fax lines may cause routing delays.

If you do not have a U.S. Individual Taxpayer Identification Number (ITIN) and your LLC has an EIN, Line 1 of the form should contain your LLC’s EIN. Write a short note indicating that you are the Responsible Party. The IRS may still process it.

FAQ

Does Form 8821 allow someone to talk to the IRS on my behalf?

No. Form 8821 only allows someone to view and receive your tax information. Form 2848 is required if you want someone to speak with and negotiate with the IRS on your behalf. The designee listed on Form 2848 must also be a licensed professional.

Can I authorize more than one person on a single Form 8821?

You can name up to two designees. If you want to name more than two, check the box on Line 2 and include a list with the form. Only two designees can be appointed to receive notice copies for the same matters.

Does Form 8821 have an expiration date?

Not strictly. It stays active until you revoke it or file a new Form 8821 for the same tax matters without checking the Line 5 retention box.

What is a CAF number, and does my designee need one?

A CAF number is a nine-digit number that the IRS issues for the Centralized Authorization File. It is assigned the first time a designee files Form 8821 or 2848. If no CAF number has been assigned, write “NONE” on the form, and the IRS will issue one after processing the request.

Can I file Form 8821 electronically?

Yes. The IRS Tax Pro Account portal at IRS.gov/Submit8821 accepts real-time submissions. Submissions via fax or mail will take 10 business days or more to be processed.

What happens if I file a new Form 8821 and forget to check Line 5?

The IRS will automatically cancel all previous authorizations for the same tax matters. If you have multiple active Form 8821s covering different designees, different tax years, or different tax matters, attach copies of those previous authorizations and check Line 5 on the new submission.

Ready to File?

If you need to authorize access to your IRS tax records, or if you are working to clarify an EIN, address a notice, or resolve a compliance issue for your U.S. LLC, we can help. EasyFiling assists founders from over 175 countries to resolve these issues.

Reach out to EasyFiling to get started.