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Official form guide
IRS Form 921P is the Consent Fixing Period of Limitation on Assessment of Income and Profits Tax. No official source is available for this form.
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IRS Form 921P is the Consent Fixing Period of Limitation on Assessment of Income and Profits Tax. No official source is available for this form.
Plain English
This form is used to agree to extend the time the IRS has to assess additional income or profits tax. By signing, you waive the standard three-year statute of limitations for a specific period.
Submission Date
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Situation
Why it matters
✓ Check before you continue
Filer is an estate or trust
Form 921P is for corporations; Form 921 covers non-corporate entities.
✓ Confirm the entity type matches Form 921 or Form 921P in the current IRS instructions.
Consent covers multiple tax years
Use Form 921-A for multiple years on one consent to avoid separate filings.
✓ Verify the periods are consecutive and on one form.
Consent needed for partnership adjustment
Form 921P is for income and profits tax; partnerships use Form 870-P for assessment limitation.
✓ Check the entity is not a partnership.
Filer is a tax-exempt organization
Exempt organizations use Form 921-T to consent to assessment of unrelated business income tax.
✓ Confirm the organization's tax-exempt status and income type.
Not stated in the official source — verify on the agency site.
Checklist
Field or section
Document or info needed · Usually found in
Part I: Filer identification
Entity name, address, EIN, and date of appointment · IRS notice of determination or court order
Part II: Tax period
Specific tax year or period end date · Tax return or IRS notice of deficiency
Part III: Consent signature
Signed by an authorized officer or fiduciary · Corporate minutes or trust document
Date of consent
Actual date the consent is signed · Date on the signature line
Attachments
Copy of court appointment or board resolution (if required) · Entity's records or court order
Mailing address
Correct IRS service center for the entity's location · Current IRS form instructions
Field map
General Info
2 items
Full legal name and taxpayer identification number (SSN or EIN).
Current mailing address.
Details
2 items
Complete all applicable sections of this form according to the official IRS instructions.
Enter the relevant dollar amount if this form involves tax calculation.
Certification
1 items
Read and acknowledge any certifications required by this form.
Signatures
1 items
Sign and date. Unsigned forms cannot be processed.
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Fillable formOpen in Editor->No official source is available for IRS Form 921P, so the current edition and revision date are unknown. Filers should verify the latest version on the IRS website before use.
Quick Facts
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Why it happens
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Do I use Form 921 or Form 921P?
Both consents exist; the letter suffix depends on entity type.
→ Verify the entity is a corporation (Form 921P) or non-corporate (Form 921) in IRS instructions.
Can I consent for multiple years on this form?
Form 921P appears to have a single period line.
→ Use Form 921-A for multiple years; check if a separate consent per year is needed.
Who signs for a dissolved corporation?
The form asks for an authorized officer, but the corporation no longer exists.
→ Consult a tax professional or the IRS notice for state-law authorized signer.
Is this form optional or required?
Some taxpayers assume it is optional when responding to a deficiency notice.
→ Read the accompanying IRS notice: the form is typically mandatory to stop the assessment period.
What if I file after the statutory deadline?
The limitation period may already have expired.
→ Confirm the IRS notice gives a deadline; late filing may be invalid.
Do I need to notarize the signature?
The form does not have a notary block, but filers may assume it does.
→ Follow the form's instructions only; no notarization is mentioned in the source.
Where do I mail the form?
No address is printed on the form itself.
→ Use the address in the current IRS instructions or the address on the accompanying notice.
Workflow map
Before
Current
After
Often used with
This form is used to agree to extend the time the IRS has to assess additional income or profits tax. By signing, you waive the standard three-year statute of limitations for a specific period.
Why it happens Safe check
Both consents exist; the letter suffix depends on entity type. Verify the entity is a corporation (Form 921P) or non-corporate (Form 921) in IRS instructions.
Form 921P appears to have a single period line. Use Form 921-A for multiple years; check if a separate consent per year is needed.
The form asks for an authorized officer, but the corporation no longer exists. Consult a tax professional or the IRS notice for state-law authorized signer.
Some taxpayers assume it is optional when responding to a deficiency notice. Read the accompanying IRS notice: the form is typically mandatory to stop the assessment period.
The limitation period may already have expired. Confirm the IRS notice gives a deadline; late filing may be invalid.
The form does not have a notary block, but filers may assume it does. Follow the form's instructions only; no notarization is mentioned in the source.
Source transparency
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