Form 1127 (Rev. 12-2024) — 2021 Tax Year Checklist
Purpose Summary
IRS Form 1127 allows taxpayers to request additional time to pay federal taxes when immediate payment would cause undue hardship. This application for extension of payment time applies to various tax types, including income tax, self-employment tax, gift tax, and deficiency assessments. For the 2021 tax year, applicants must clearly distinguish between return-year liability and deficiency determinations, with specific time limits applying to each category.
Completion Steps
- Verify Tax Type and Year Eligibility – Confirm your tax obligation originates from the 2021 calendar year or a fiscal year ending in 2021. This payment extension form applies to income taxes, self-employment taxes, withheld taxes on nonresident aliens and foreign corporations, taxes on private foundations and specific tax-exempt organizations, taxes on qualified investment entities, taxes on greenmail, taxes on structured settlement factoring transactions, and gift taxes. Note that estate tax extensions require Form 4768 instead.
- Complete Name, Address, and Identification Block – Enter your Social Security Number, Individual Taxpayer Identification Number, or Employer Identification Number as appropriate. For joint returns or joint deficiencies from 2021, include both spouses’ names in the order they appear on the return, listing the first spouse’s identification number. Use P.O. box addresses only if street delivery is unavailable. Foreign addresses must follow country-specific postal conventions without abbreviation.
- Establish Request Type in Part I – Indicate whether you are requesting an extension for “tax shown on Form [X]” for return-year liability or “amount determined as a deficiency” following an IRS examination. Each category has different due dates and extension periods. Enter the form number related to your tax obligation and specify the tax year for calendar year filers or the fiscal year ending date for fiscal year entities.
- Enter Correct Due Dates – For 2021 calendar-year returns filed without extensions, the payment due date was April 18, 2022. Fiscal year entities should insert their specific budgetary year ending month, day, and year. For deficiency assessments, use the payment due date shown on your IRS notice and demand letter.
- Propose Extension End Date Within Statutory Limits – Specify the proposed payment date and total tax amount owed. For return-year tax obligations, you may request up to 6 months from April 18, 2022. If you are outside the United States for the entire extension period, longer extensions may be granted except for taxes under sections 4981, 4982, and 5881. For deficiency assessments, requests are generally limited to 18 months from the payment due date, with possible additional 12-month extensions in exceptional circumstances.
- Document Undue Hardship in Part II – Provide a detailed narrative explaining the substantial financial loss you would suffer if required to pay immediately. Examples include forced liquidation of assets at sacrifice prices or significant business disruption. The IRS defines “undue hardship” as more than mere inconvenience; you must demonstrate actual substantial financial loss tied to your 2021 income situation, asset position, or expense obligations. Generic hardship statements without specific details will result in denial.
- Attach Current Asset and Liability Statement – Submit a comprehensive statement showing book values and market values of all assets as of the last day of the month immediately preceding your application filing date. For instance, if filing in June 2022, prepare the statement as of May 31, 2022. This date reflects your current financial position at the time of requesting the extension, not necessarily the month before the original tax deadline. List whether securities are publicly traded or unlisted, and include all outstanding liabilities and debts.
- Attach Three-Month Income and Expense Schedule – Provide an itemized list documenting all income received and expenses paid during the three months before the tax due date. For 2021 calendar-year returns with a deadline of April 18, 2022, this schedule covers the period from January through March 2022. The IRS requires detailed itemization for this mandatory supporting document; applications submitted without this schedule face automatic rejection.
- Sign and Date Original Form – Individual taxpayers must personally sign and date the application under penalty of perjury. Joint return filers or those with joint deficiency assessments must both sign and date the form. If one spouse cannot sign, refer to Publication 501 for alternative procedures. Tax preparers must also sign and date the form if they completed it on behalf of the taxpayer.
- Verify Both Part III Checkboxes – Confirm you have checked both mandatory documentation boxes in Part III: the asset and liability statement checkbox and the three-month income and expense itemization checkbox. Failure to check both boxes results in immediate application rejection without IRS review of the underlying hardship claim.
- Identify Correct Filing Location – Gift tax payment extensions for Form 709 or Form 709-NA should be mailed to: Department of the Treasury, Internal Revenue Service, Stop 824G, 7940 Kentucky Drive, Florence, KY 41042-2915. All other tax types should be filed with the Internal Revenue Service, Attention: Advisory Group Manager, serving your legal residence area or principal place of business location.
- Acknowledge Interest and Penalty Exposure – Understand that interest charges accrue from the original payment due date until full payment is received, regardless of any approved extension. For calendar-year 2021 filers, interest begins accruing from April 18, 2022. Additionally, failure to pay within the approved extension period may result in penalty assessments. Payment must be made before the extension expires.
2021 Year-Specific Updates
Deficiency Extension Limit
Payment extensions for deficiency assessments are generally capped at 18 months from the payment due date. The IRS may grant an additional 12-month extension in exceptional circumstances, allowing for a maximum total extension period of 30 months. Extensions do not automatically renew and require separate approval.
Out-of-Country Extension Rule
Taxpayers physically outside the United States for the entire extension period may receive extensions exceeding the standard 6-month limit for return-year tax obligations. This exception does not apply to excise taxes under sections 4981, 4982, and 5881.
Gift Tax Filing Address
Applications related to nonresident alien gift tax returns on Form 709-NA must be sent to the Florence, Kentucky processing center listed above, not to local advisory offices. Standard Form 709 gift tax extensions also use this dedicated address.
Negligence and Fraud Exclusions
The IRS automatically denies extension requests when deficiency assessments result from taxpayer negligence, intentional disregard of tax rules and regulations, or fraud with intent to evade tax. Taxpayers bear the burden of proving these circumstances do not apply to their situation.
Mandatory Documentation Requirements
Both supporting documents—the current asset and liability statement and the three-month income and expense schedule—are non-waivable requirements. Missing either document triggers automatic rejection without consideration of the hardship claim’s merits.
Application Filing Deadlines
Submit your application as soon as you become aware that immediate payment would cause undue hardship. For return-year tax extensions, the IRS must receive Form 1127 on or before the return’s original due date, excluding any filing extensions. For deficiency assessments, submit before the payment deadline stated in your IRS notice.
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This checklist is for educational purposes only and does not constitute tax or legal advice. Always review official IRS instructions and consult a qualified professional for guidance.

