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8821 form: fill out and sign online, free to start

Form 8821 is the Internal Revenue Service's “Tax Information Authorization.” In its words: “Form 8821 is used to authorize certain entities to review confidential information in any IRS office for the type of tax and the years or periods listed.” (IRS, About Form 8821)

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Fill it nowOfficial form on irs.gov

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Also searched as: Form 8821, IRS tax information authorization, 8821 tax authorization, Tax Information Authorization, 8821 form irs.

8821 at a glance

Form 8821 at a glance
AgencyInternal Revenue Service (IRS)
What it is forForm 8821 is used to authorize certain entities to review confidential information in any IRS office for the type of tax and the years or periods listed.
Who fills itThe taxpayer giving the authorization, as the form is laid out.
Who it goes toSee the IRS instructions for Form 8821.
SignatureThe form has a signature line. The form says: “Don’t sign this form unless all applicable lines have been completed.”
RevisionRev. January 2021
Last checked
Official form and instructionsOfficial form (PDF) · Official instructions

For what to enter on each line, read the agency's instructions.

What the agency says

  • The form itself says it is not to be used to request copies of your tax returns or to authorize someone to represent you: “Don’t use Form 8821 to request copies of your tax returns or to authorize someone to represent you. See instructions.”

    Source: IRS, Form 8821 (printed on the form) (checked October 26, 2026)

How to fill out the 8821 with PDFinish

  1. Open the form. Press Fill it now. The form opens in Finish PDF in your browser. Nothing is uploaded.

  2. Type in the boxes. Click a box and type, or tick a checkbox. Add your signature in the Sign step and press Lock to put your entries into the page.

  3. Save your copy. Name the file and download it. Your original blank form is never changed.

Questions about the 8821 form

Is the 8821 form free to fill out here?

Free to start. Your 2 free uses in total need no account. Filling in a form and signing it are free; the file you download counts as one of your free uses. After that, start your 7-day free trial of Pro or buy Pro for $2.99 a month.

Is my information uploaded?

No. The form is filled in your browser and never uploaded, so what you type, including any Social Security number or other tax ID, stays on your device. We do not record what you type.

Is this the latest version of Form 8821?

It is the version the agency listed as current when we last checked on 2026-10-26: Rev. January 2021. We compare our copy with the agency's every week. If the agency updates the form, this page says so and points to the official link until we update ours.

Can I sign the 8821 electronically?

Whether an electronic signature is accepted is up to whoever asked you for the form, unless the agency says otherwise. Check the agency's instructions at https://www.irs.gov/instructions/i8821. PDFinish places a picture of your signature on the page; it is not a certificate-based digital signature.

Where do I send the 8821?

In the agency's words: See the IRS instructions for Form 8821. Read the agency's instructions at https://www.irs.gov/instructions/i8821.

What do I put in each box of the 8821?

We do not tell you what to enter. The agency's own instructions explain each line: https://www.irs.gov/instructions/i8821.

Related forms

Sources

PDFinish is not affiliated with the IRS or any government agency. The forms are the agency's own, unchanged.

General information, not tax, legal or immigration advice.