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Official form guide
Form 921A: Consent Fixing Period of Limitation on Assessment of Income and Profits Tax
IRS Form 921A is a consent fixing the period of limitation on assessment of income and profits tax. No official source is available for this form. Its purpose and filer requirements are not specified in available documentation. Use only for general filing guidance.
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IRS Form 921A - Consent Fixing Period of Limitation on Assessment of Income and Profits Tax
IRS Form 921A is a consent fixing the period of limitation on assessment of income and profits tax. No official source is available for this form. Its purpose and filer requirements are not specified in available documentation. Use only for general filing guidance.
Risk Radar
Scan points- 1Not stated in the official source.
- 2Filing without a valid taxpayer identifying information (name and EIN/SSN) on the header
- 3Omitting the signature of the taxpayer or authorized representative required for consent
- 4Using an outdated version of the form without confirming the current revision date
- 5Failing to include the specific tax year or period to which the consent applies
Plain English
This form is used to agree to extend the time the IRS has to assess additional taxes. It applies specifically to income and profits taxes. The form must be filed with the IRS by the taxpayer or their authorized representative.
Submission Date
- Filing date: 2012-07-17 00:00:00
- Preparation window: collect IDs, supporting records, and signatures in advance.
- Final review: verify names, dates, and required fields before submission.
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What this form is for
- Use this form only when the taxpayer agrees to extend the period of limitation on assessment of income and profits tax for a specific tax year.
- Do not use this form to consent to an extension for any other tax type, such as estate or gift tax, or for a period not related to statutory assessment limitations.
- Check Form 872 (Consent to Extend the Time to Assess Tax) instead when consenting to an extension for individual or corporate income tax, as Form 921A is specific to certain income and profits tax situations.
Form selector
Use this form or another form?
Need to extend the assessment period for estate or gift tax
Consent for a different tax type requires the correct form for each tax
✓ Verify the specific tax type being assessed
Taxpayer disagrees with the proposed assessment and wants to contest it
For use when the taxpayer does not consent to extend the limitation period
✓ Confirm the form number matches the intended action
Multiple tax years need extended assessment periods
A single form covers only one period; multiple years require separate filings
✓ Review the tax years listed on each consent
Separate Consent Forms (one per year)
Deadline or filing window
Not stated in the official source.
Checklist
What you need before filling it out
Taxpayer name and address
Legal name and current mailing address · Prior year tax return filed with the IRS
Taxpayer identification number (EIN or SSN)
Official IRS-issued EIN or SSN matching prior returns · Prior year tax return or IRS notice
Tax year or period covered
Specific calendar or fiscal year end date · Tax return for that period citing the IRS assessment notice
Signature of taxpayer or authorized representative
Original ink or authorized electronic signature · Authorizing documentation for representatives (e.g., Power of Attorney)
Date of signature
Calendar date when the form is signed · Current calendar for the day the form is executed
IRS office or address for filing
Correct service center listed on the related IRS notice · IRS notice or instruction booklet for the tax type being assessed
Before you submit
- 1Confirm the form edition date matches the current version on IRS.gov.
- 2Verify the taxpayer's name and identification number are exactly as shown on the last filed return.
- 3Enter the correct tax year(s) for which the consent applies.
- 4Ensure the amount of tax (if listed) agrees with the IRS notice or examination report.
- 5Date the form on the actual date of signing.
- 6Obtain signatures from both the taxpayer (or authorized representative) and the IRS official.
- 7Make a copy of the signed form for your records.
- 8File the original form with the IRS examiner or office identified in the related correspondence.
How to file this form
- 1Obtain the current version of IRS Form 921A from IRS.gov or the examining agent.
- 2Complete all fields with accurate information from the related IRS notice and your tax records.
- 3Review the form for errors, especially the tax year and amount fields.
- 4Sign and date the form (taxpayer or authorized representative).
- 5Deliver the signed form to the assigned IRS examiner or office for their signature.
- 6After both parties sign, retain a copy for your records.
- 7Confirm receipt with the IRS office; no proof-of-filing confirmation is provided unless requested.
Known limitations
- 1Form 921A applies only to income and profits tax assessments, not to other taxes like employment or excise taxes.
- 2This form does not extend the period for assessment of penalties or interest beyond the tax assessment itself.
- 3Form 921A cannot be used to consent to an extension beyond the statutory maximum period allowed by law (e.g., 10 years from assessment).
- 4The form is not a substitute for filing a tax return or paying the tax due; it merely extends the time the IRS may assess additional tax.
Field map
Compact field-by-field guide
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 current edition or revision date is available for IRS Form 921A in official sources. Use the most recent version available on the IRS website before filing.
What changed or needs a fresh check
- Edition date — confirm the revision date on the form, but no official source provides a current edition; use the latest version from IRS.gov.
- Fee — no fee is associated with filing Form 921A; not stated in the official source.
- Mailing address — not stated in the official source; consult IRS guidance for the appropriate service center or instruct the specific IRS office sending the consent.
- Signature — both the taxpayer (or authorized representative) and an IRS official must sign and date the form to be valid.
- Tax year(s) covered — clearly list the specific tax year(s) the consent applies to on the form; no source specifies a default.
Quick Facts
Downloads
After you file
- 1Retain a copy of the signed Form 921A indefinitely until the statute of limitations expires and any related tax liability is resolved.
- 2Mark the new expiration date of the assessment period on your calendar to monitor IRS actions.
- 3If a deficiency is later proposed, review and respond to any IRS notice (e.g., 90-day letter) promptly.
- 4To correct an error on the filed consent, contact the IRS examiner immediately to revoke the consent or file a corrected version.
- 5Keep records of all correspondence with the IRS regarding the consent and underlying tax year.
Sources
- SRCNot stated in the official source — verify on the agency site.
- SRCNot stated in the official source — verify on the agency site.
- SRCNot stated in the official source — verify on the agency site.
- SRCNot stated in the official source — verify on the agency site.
- SRCNot stated in the official source — verify on the agency site.
- SRCNot stated in the official source — verify on the agency site.
- SRCNot stated in the official source — verify on the agency site.
- SRCNot stated in the official source — verify on the agency site.
- SRCNot stated in the official source — verify on the agency site.
- SRCNot stated in the official source — verify on the agency site.
Common confusion points
Where do I send this form?
The mailing address is not printed on the form itself; filers must refer to the IRS notice or general tax return instructions for the correct service center
→ Use the address on the IRS notice that started the assessment process
Do I sign it myself or does my CPA sign?
Both the taxpayer and an authorized representative can sign, but the representative must have a valid Power of Attorney on file with the IRS
→ Check your Power of Attorney’s scope and ensure it covers consenting to extend the assessment period
What if I don't sign it?
The IRS may proceed to assess the tax based on the original statute of limitations without your consent
→ You risk an immediate assessment and collection actions; signing is voluntary but has consequences
Is this a form I file with my tax return?
The form is used after the return is filed to extend the assessment window for an already-filed or proposed assessment
→ Attach the signed form to your response to the IRS notice, not to your annual return
Can I modify the tax year on the form?
The form normally has a line for the specific tax year; but any change to the period or amount may invalidate the consent
→ Only fill in the exact period for which the IRS requested the extension
What is the filing deadline for this form?
The form must be executed and delivered to the IRS before the original statute of limitations expires for that tax year
→ Check the IRS notice for the specific deadline date; do not rely on a general rule
Workflow map
Related forms and next steps
Before
Current
After
Often used with
⚠ If something goes wrong
- Form 911 (Application for Taxpayer Assistance Order) — to resolve delays or disputes with the consent process.
Questions about IRS Form 921A
What is IRS Form 921A used for?
This form is used to agree to extend the time the IRS has to assess additional taxes. It applies specifically to income and profits taxes. The form must be filed with the IRS by the taxpayer or their authorized representative.
How do I complete IRS Form 921A?
Complete the form by filling in all required fields, including taxpayer information and the specific tax periods covered. Sign and date the form. Send a copy to the IRS as instructed.
Where do I send this form?
The mailing address is not printed on the form itself; filers must refer to the IRS notice or general tax return instructions for the correct service center Use the address on the IRS notice that started the assessment process
Do I sign it myself or does my CPA sign?
Both the taxpayer and an authorized representative can sign, but the representative must have a valid Power of Attorney on file with the IRS Check your Power of Attorney’s scope and ensure it covers consenting to extend the assessment period
What if I don't sign it?
The IRS may proceed to assess the tax based on the original statute of limitations without your consent You risk an immediate assessment and collection actions; signing is voluntary but has consequences
Is this a form I file with my tax return?
The form is used after the return is filed to extend the assessment window for an already-filed or proposed assessment Attach the signed form to your response to the IRS notice, not to your annual return
Can I modify the tax year on the form?
The form normally has a line for the specific tax year; but any change to the period or amount may invalidate the consent Only fill in the exact period for which the IRS requested the extension
What is the filing deadline for this form?
The form must be executed and delivered to the IRS before the original statute of limitations expires for that tax year Check the IRS notice for the specific deadline date; do not rely on a general rule
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