How to File a Final Tax Return for a Deceased Person

To file a final tax return for a deceased person, prepare a Form 1040 that reports the decedent’s income from January 1 through the date of death, then sign it as the personal representative or surviving spouse and write “DECEASED,” the decedent’s name, and the date of death across the top. The return is due on the normal April 15 deadline of the year after death, uses the same rules as any individual return, and can produce a refund the estate or surviving spouse is entitled to claim.¹

Who Files and Signs

A court-appointed executor or administrator has primary responsibility. This person is the fiduciary for the estate and is legally required to settle the decedent’s outstanding tax obligations.² If no one has been appointed through probate, the duty falls to the surviving spouse. With no surviving spouse and no court appointment, whoever is in charge of the decedent’s property files.³

Signature rules depend on that role:³

A court-appointed representative signs the return, adds their title (executor or administrator), and writes “DECEASED,” the decedent’s name, and the date of death across the top. On a joint return, the surviving spouse also signs.
A surviving spouse filing jointly with no appointed representative signs and writes “Filing as surviving spouse” in the signature area.
Any other person in charge of the property signs as “personal representative.”

A filing is only required if the decedent’s income for the short year exceeds the standard deduction for the applicable filing status. Even below that threshold, filing may make sense to recover taxes already withheld.

When the Return Is Due

The deadline is April 15 of the year after death. If someone died in 2025, the final return is due April 15, 2026.⁴ Dying mid-year does not move the deadline forward.

Need more time? File Form 4868 by April 15 for an automatic six-month extension to October 15.⁵ That extends the time to file, not the time to pay. Interest runs on any unpaid balance from the original due date, so estimate the tax and pay what you can with the request.

If the decedent failed to file returns for earlier years, those are still owed and the personal representative must file them.⁶ A person who died in March 2025 before filing their 2024 return still needs a regular 2024 return on the normal schedule; the “final” return is the one covering January 1, 2025 through the date of death.

Choosing the Filing Status

Filing status for the year of death can swing the tax bill substantially.

Married filing jointly. A surviving spouse who has not remarried by December 31 of the year of death can file jointly with the decedent for that year. This usually produces the lowest tax because of the wider brackets and larger standard deduction ($32,200 for 2026).⁷
Qualifying surviving spouse. For the two tax years after the year of death, the surviving spouse may use this status, which keeps the joint brackets and standard deduction. It requires a dependent child or stepchild who lived with the surviving spouse all year. Without a qualifying child, the surviving spouse files as single or head of household in later years.⁸⁹
Single or head of household. If the decedent was unmarried, the final return uses single status. Standard deductions for 2026 are $16,100 for single filers and $24,150 for head of household.⁷

What Income to Report

Report all income the decedent actually received, or that was constructively available, before death: wages, interest, dividends, pension payments, rental income, and business income.¹ Income that accrues or is received after the date of death does not belong here. It goes on a separate estate income tax return, Form 1041.¹⁰

Two items catch people out. First, Social Security benefits: SSA does not pay for the month of death, so a check that arrives after death covering that month must be returned.¹¹ Benefits properly received before the month of death are reported using the normal taxability rules. Second, quarterly estimated tax payments the decedent made during the year should be claimed as a credit on the final return.⁶ The estate is a separate taxpayer and cannot use them.

Income in Respect of a Decedent

Income in Respect of a Decedent (IRD) is money the decedent had earned or had a right to receive but had not yet actually received before death. Common examples: a final paycheck for work already performed, deferred compensation, distributions from traditional IRAs or 401(k)s, and installment sale payments still coming in. IRD does not go on the final Form 1040. Whoever ultimately receives the payment reports it on their own return, and the income keeps the same tax character it would have had in the decedent’s hands.¹²

IRD can be taxed twice, once as income to the recipient and again as part of the decedent’s gross estate for federal estate tax. To offset that, the recipient who includes IRD in income can claim a deduction for the estate tax attributable to that income.¹² Beneficiaries inheriting large traditional IRA balances from an estate that owed federal estate tax often miss this. If the estate filed Form 706 and paid estate tax, check whether IRD items were included.

Deductions

Claim the full standard deduction for the chosen filing status. There is no proration for the short tax year. Alternatively, itemize if that produces a larger deduction, but only expenses actually paid before death count.

The Medical Expense Exception

Medical expenses get special treatment. If the estate pays the decedent’s medical bills within one year after the date of death, those expenses can be treated as if the decedent paid them while alive.¹³ The personal representative chooses whether to deduct them on the final Form 1040 (as itemized deductions subject to the 7.5% AGI floor) or on Form 706. The same expenses cannot be claimed on both.¹⁴

If bills from a prior year were still unpaid at death and the estate pays them within the one-year window, the personal representative can file Form 1040-X for the year the expenses were incurred, with a statement that the expenses have not been and will not be claimed on the estate tax return.¹³

Documents to Gather

A certified copy of the death certificate. Order several. Banks, brokerages, and the IRS may each need one.
The decedent’s Social Security number.
Income documents for the period through the date of death: W-2s, 1099s, and Schedules K-1.
Records for deductible expenses paid before death: charitable contributions, property taxes, medical bills.
Prior-year returns, which help identify recurring income and carryforward items like capital losses.

Establishing Your Authority With the IRS

If you are the court-appointed executor or administrator, attach a copy of your Letters Testamentary or Letters of Administration to the return. File Form 56 (Notice Concerning Fiduciary Relationship) to formally notify the IRS you are acting on behalf of the decedent.² Filing Form 56 directs future IRS correspondence to you rather than to the decedent’s last known address.

Submitting the Return

E-filing is available. Follow the software’s prompts for entering the date of death and the correct signature notation. For paper returns, mail the form to the IRS service center for the decedent’s state and include the certified death certificate and a copy of your court appointment documents.

Claiming a Refund

If the final return shows a refund, whether you need Form 1310 depends on your role. Two filers do not need it: a surviving spouse filing an original joint return, and a court-appointed personal representative filing an original Form 1040 with the court certificate attached.¹⁵

Everyone else files Form 1310 with the return. That includes a surviving spouse who received a joint refund check in both names and needs it reissued, a court-appointed representative filing an amended return or Form 843, and anyone claiming a refund where no court-appointed representative exists. In that last case, complete Part II of Form 1310 and attach proof of death.¹⁵

Penalties and Personal Liability

The usual penalties apply. Failure-to-file runs 5% of the unpaid tax per month, up to 25%. If the return is more than 60 days late, the minimum penalty is $525 or 100% of the unpaid tax, whichever is less.¹⁶ Failure-to-pay is a separate 0.5% per month on the outstanding balance. Penalties come out of the estate, but if assets have already been distributed, the personal representative can be personally on the hook.

Federal law gives the government priority over other creditors when an estate cannot cover all its debts. A personal representative who distributes estate assets to beneficiaries or other creditors before paying the decedent’s federal tax liability becomes personally liable for the unpaid tax, up to the amount distributed.¹⁷ Do not make large distributions until you have a clear picture of what is owed.

For formal clearance, file Form 5495 to request a discharge from personal liability for the decedent’s income, gift, and estate taxes. The IRS then has nine months from receipt (six months for trust fiduciaries) to assess any additional tax. After that period, or after you pay any amount the IRS determines is owed, you are discharged from personal liability for a later-discovered deficiency.¹⁸

Where the Estate Return Fits In

From the moment of death, the estate becomes its own taxable entity. Income generated by estate assets after the date of death (interest on bank accounts, dividends, rental income) does not go on the final Form 1040. It goes on Form 1041, U.S. Income Tax Return for Estates and Trusts. Form 1041 is required if the estate has gross income of $600 or more during the tax year, or if any beneficiary is a nonresident alien.¹⁹ The estate needs its own EIN. Do not use the decedent’s Social Security number for estate filings.

Form 706, the federal estate tax return, is separate again and is only required for estates exceeding the federal exemption threshold. Most estates fall well below it and never file Form 706.

1
Internal Revenue Service. File the Final Income Tax Returns of a Deceased Person
2
Internal Revenue Service. Instructions for Form 56 – General Instructions
3
Internal Revenue Service. How to File a Final Tax Return for Someone Who Has Passed Away – Section: Who Should Sign the Return
4
Internal Revenue Service. Filing a Final Federal Tax Return for Someone Who Has Died – Section: Things to Know About Filing the Final Tax Return
5
Internal Revenue Service. Application for Automatic Extension of Time to File
6
Internal Revenue Service. Publication 559 (2025), Survivors, Executors, and Administrators
7
Internal Revenue Service. IRS Releases Tax Inflation Adjustments for Tax Year 2026
8
Internal Revenue Service. Qualifying Surviving Spouse Filing Status
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Internal Revenue Service. Publication 501 (2025), Dependents, Standard Deduction, and Filing Information
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Internal Revenue Service. Frequently Asked Questions on Estate Taxes
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Social Security Administration. What You Need to Know When You Get Retirement or Survivors Benefits – If a Beneficiary Dies
12
Office of the Law Revision Counsel. 26 U.S. Code 691
13
Internal Revenue Service. Publication 502 (2025), Medical and Dental Expenses – Decedent
14
Internal Revenue Service. Publication 559 (2025), Survivors, Executors, and Administrators – Medical Expenses
15
Internal Revenue Service. Form 1310, Statement of Person Claiming Refund Due a Deceased Taxpayer
16
Internal Revenue Service. Failure to File Penalty
17
Office of the Law Revision Counsel. 31 U.S. Code 3713 – Priority of Government Claims
18
Internal Revenue Service. Form 5495 – Request for Discharge From Personal Liability
19
Internal Revenue Service. File an Estate Tax Income Tax Return