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Official form guide
IRS Form 8821 (sp) is used to designate an authorized person or persons to receive tax information for a taxpayer, filer, or entity. If filing related to IRA penalties, annotate "IRA civil penalty" in column (a).
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IRS Form 8821 (sp) is used to designate an authorized person or persons to receive tax information for a taxpayer, filer, or entity. If filing related to IRA penalties, annotate "IRA civil penalty" in column (a).
Plain English
This form allows you to officially name someone—like a spouse or accountant—to act on your behalf when dealing with the IRS regarding your taxes. By submitting Form 8821, you direct the agency to send important notices and information directly to that designated person instead of just yourself. This ensures key tax communications reach the right hands.
Submission Date
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Filing about a deceased person's estate
Use the date of death instead of the tax year or period in column (a)
✓ Confirm the decedent's date of death is noted.
Filing for an employee benefit plan
Include the specific plan number in the description field when filing with Form 8821
✓ Verify the plan number is accurately listed.
Filing only for penalties and interest owed
Note 'civil penalty' in column (a) and include the corresponding tax year(s) in column (c) while leaving column (b) as N/A
✓ Ensure 'N/A' is correctly placed in column (b).
The source does not state a specific filing deadline for initial submission. However, if revoking authorization without a copy of the original document, you must send a written notification to the IRS. This notification must include the name and address of each designated person whose authority is being revoked.
Checklist
Purpose of Form 8821
Taxpayer/Entity designation & authorization type · Instructions p.1
Designated Person's Authority
Name, address, etc., of the person receiving information · Instructions p.1
IRA Penalty Designation
Must note 'IRA civil penalty' in column (a) · Instructions p.4
Filing Location/Address
Your state of residence or filing status (e.g., APO/FPO) · Instructions p.1
Foreign Filing Address
Use the International CAF Team address · Instructions p.1
Estate Tax Reference
Date of death must be noted in column (a) · Instructions p.4
Field map
Entity Info
1 items
Name and taxpayer ID of the entity claiming the credit.
Credit Info
1 items
Type of credit or incentive being claimed.
Calculation
2 items
The base amount used to calculate the credit.
Calculated credit amount after applying formulas and limitations.
Certification
1 items
Detailed breakdown supporting the credit calculation.
Signatures
1 items
Sign and date the form.
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Fillable formOpen in Editor->The current edition is 01/21, and for the most recent information regarding IRS Form 8821 (sp), filers should visit IRS.gov/Form8821sp.
Quick Facts
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Who needs to sign this form?
The contribuent must sign and date the Form 8821 on line 6.
→ Check that Line 6 has a signature and date.
What if my designee doesn't have an existing CAF number?
Write 'NONE' in the designated spot, and the IRS will issue one directly to them.
→ Verify that you wrote 'NONE' instead of leaving it blank on Line 2 for that designee.
When should I use Form 56 alongside this form?
Use Form 56 (Notice Concerning Fiduciary Relationship) to notify the IRS about an existing fiduciary relationship.
→ Confirm you have submitted Form 56 if the designated person is a fiduciary.
How do I file it online?
The Form 8821 must be sent online via IRS.gov/Submit8821 if electronic signature is used.
→ Check that the submission method listed matches your filing action (online, fax, or mail).
What if I am a trust?
Note the name, title, and address of the trustee, as well as the name and EIN of the trust on the form.
→ Verify you have included all required trust details in the appropriate sections.
When is this 120-day rule waived?
The 120-day requirement does not apply when sending Form 8821 to authorize disclosure for helping with an IRS tax matter.
→ Check that your filing purpose qualifies for the exemption from the standard 120 days.
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⚠ If something goes wrong
This form allows you to officially name someone—like a spouse or accountant—to act on your behalf when dealing with the IRS regarding your taxes. By submitting Form 8821, you direct the agency to send important notices and information directly to that designated person instead of just yourself. This ensures key tax communications reach the right hands.
Individuals filing jointly must have their spouse present a separate Form 8821 to designate someone for them. Corporations, LLCs, or employee benefit plans file this form depending on their structure and who is authorized to sign it.
The form collects your identifying information (name, TIN, address) in the section labeled 'Información sobre el contribuyente.' It also requires listing the full name, mailing address, and nine-digit CAF number for each designated person in the 'Designado(s)' section.
The form must be submitted to the IRS using the address specified in the Table of where to file the form. If revoking an authorization, a written notice must accompany that notification.
First, complete the 'Información sobre el contribuyente' section with your details. Next, fill out the 'Designado(s)' section for each authorized individual, including their CAF number. Finally, sign and date the form; if you name more than two designees, check the corresponding box and attach a list.
If you do not provide proper information or fail to designate someone correctly, the designated person may not receive notices and communications from the IRS regarding your tax matters.
The contribuent must sign and date the Form 8821 on line 6. Check that Line 6 has a signature and date.
Write 'NONE' in the designated spot, and the IRS will issue one directly to them. Verify that you wrote 'NONE' instead of leaving it blank on Line 2 for that designee.
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