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Official form guide
Form 921I: Consent Fixing Period of Limitation on Assessment of Income and Profits Tax
IRS Form 921I is a consent fixing the period of limitation on assessment of income and profits tax. No official source is available for this form; all statements below reflect general filing mechanics.
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IRS Form 921I - Consent Fixing Period of Limitation on Assessment of Income and Profits Tax
IRS Form 921I is a consent fixing the period of limitation on assessment of income and profits tax. No official source is available for this form; all statements below reflect general filing mechanics.
Risk Radar
Scan points- 1Not stated in the official source.
- 2Not stated in the official source.
- 3Not stated in the official source.
- 4Not stated in the official source.
- 5Not stated in the official source.
Plain English
This form is used to agree to extend the time limit for the IRS to assess additional income and profits tax. By signing it, you give the IRS more time to review your tax return and decide if you owe more tax.
Submission Date
- Filing date: 2019-10-25 22:10:09
- 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 when the Internal Revenue Service (IRS) and a taxpayer agree to extend the period of limitation on assessment of income and profits tax.
- Do not use it when the standard assessment period has already expired without a consent.
- Check the specific tax form for the return being audited (e.g., Form 1120 or Form 1065) instead when determining the original assessment deadline.
Form selector
Use this form or another form?
Situation
Why it matters
✓ Check before you continue
You need to extend the assessment period for a trust
Trusts generally use Form 2758 instead of Form 921I; using the wrong form may invalidate the extension
✓ Confirm entity type is a corporation or individual, not a trust
You are an individual taxpayer requesting an extension
Form 921I is specifically for income and profits tax; individuals may also use Form 872
✓ Compare the taxpayer's entity type and tax year
The IRS sent you a notice proposing adjustments to partnership items
Form 921-P covers partnership items; Form 921I is for non-partnership income and profits tax
✓ Verify the notice refers to partnership items
You need to consent to extend the period for estate tax
Form 890 is for estate tax; Form 921I applies only to income and profits tax
✓ Check the tax type on the IRS notice
Deadline or filing window
Not stated in the official source.
Checklist
What you need before filling it out
Field or section
Document or info needed · Usually found in
Taxable year
Year covered by the consent · IRS notice or prior return
Type of tax
Specific tax type (income or profits) · IRS notice or assessment letter
Signature of taxpayer
Authorized signature for entity · Form instructions or IRS guidelines
Date of execution
Date signed · Form itself
Taxpayer name
Full legal name or entity name · Prior tax return or IRS records
Taxpayer identification number
SSN or EIN · Prior tax return or IRS letter
IRS office address
Service center handling the assessment · IRS notice or correspondence
Before you submit
- 1Verify the tax period covered matches the return under audit.
- 2Enter the taxpayer's correct legal name and current address.
- 3Complete the consent to extend assessment period.
- 4Obtain the IRS officer's name and signature in the designated block.
- 5Date the form with the actual execution date.
- 6Sign the form as taxpayer or authorized representative.
- 7Make a copy of the signed form for your records.
- 8Submit the original signed form to the IRS office handling the audit.
How to file this form
- 1Obtain the most current version of IRS Form 921I from the IRS website.
- 2Fill in the taxpayer's name, address, and tax period exactly as shown on the return.
- 3Complete the consent field specifying the extended assessment deadline.
- 4Have the IRS officer sign and date the appropriate block.
- 5Sign and date the form as taxpayer or authorized representative.
- 6Make a copy of the fully executed form for your records.
- 7File the original signed form with the IRS office that requested it.
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 official source is available for IRS Form 921I. The current edition and revision date are not stated in the official source — verify on the agency site.
What changed or needs a fresh check
- Edition date — confirm the revision date on the form; no edition date is stated in the official source — verify on the agency site.
- Fee — no fee is stated in the official source for this form.
- Mailing address — no specific mailing address is provided in the official source; check IRS.gov or the instructions for the related return.
- Signature — ensure the taxpayer or authorized representative signs and dates the form.
Quick Facts
Downloads
After you file
- 1Retain a copy of the signed Form 921I with your tax records.
- 2Track the extended assessment period end date and any subsequent IRS actions.
- 3If you discover an error after filing, contact the IRS office handling the audit to request a corrected consent.
- 4Store the form securely for at least the duration of the extended period plus any applicable statute of limitations.
- 5Monitor correspondence from the IRS for any notices related to the assessment.
Sources
- SRCNot stated in the official source — verify on the agency site.
Common confusion points
Confusion
Why it happens
→ Safe check
Can I use this form for multiple years?
The form asks for one taxable year, but filers may think one consent covers all years
→ Use a separate Form 921I for each year the IRS requests
Who signs for an LLC?
LLC tax classification varies
→ Confirm whether the LLC is taxed as a corporation vs partnership
Do I need to notarize this form?
Some consent forms require notarization, but others do not
→ Read the form instructions or consult the IRS notice
Can I fax the form to the IRS?
Electronic filing rules differ
→ Check the specific filing instructions in the IRS notice
What if I miss the deadline?
The IRS may not accept late consents
→ File before the requested deadline stated in the notice
Is this the same as Form 872?
Both are consent forms, but for different taxes
→ Compare the tax type listed on the IRS notice
Do I need to attach anything?
The form is standalone
→ Only attach if the IRS notice explicitly asks for additional documents
Workflow map
Related forms and next steps
Before
Current
After
Often used with
⚠ If something goes wrong
- Form 921I may need to be corrected or revoked via direct contact with the IRS audit team.
Questions about IRS Form 921I
What is IRS Form 921I used for?
This form is used to agree to extend the time limit for the IRS to assess additional income and profits tax. By signing it, you give the IRS more time to review your tax return and decide if you owe more tax.
How do I complete IRS Form 921I?
Complete all required fields as directed on the form. Sign and date the form before sending it to the IRS. Keep a copy of the completed form for your records.
Confusion — what should I check?
Why it happens Safe check
Can I use this form for multiple years?
The form asks for one taxable year, but filers may think one consent covers all years Use a separate Form 921I for each year the IRS requests
Who signs for an LLC?
LLC tax classification varies Confirm whether the LLC is taxed as a corporation vs partnership
Do I need to notarize this form?
Some consent forms require notarization, but others do not Read the form instructions or consult the IRS notice
Can I fax the form to the IRS?
Electronic filing rules differ Check the specific filing instructions in the IRS notice
What if I miss the deadline?
The IRS may not accept late consents File before the requested deadline stated in the notice
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