How to File a Final Tax Return for a Deceased Person

To file a final tax return for a deceased person, the executor or surviving spouse submits a Form 1040 reporting the decedent’s income from January 1 through the date of death, by the regular April 15 deadline of the following year.¹ The return uses the same rules and forms as any individual return, with a handful of adjustments around signatures, filing status, and which income belongs on it. The person who signs carries personal liability for getting it right, so the details matter.

Who Files and When

A court-appointed executor or administrator holds primary responsibility. This person, sometimes called the personal representative, is the fiduciary for the estate and is legally required to satisfy the decedent’s outstanding tax obligations.² If no one has been formally 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 the return.³

The deadline is April 15 of the year after death. For someone who died in 2025, the final return is due April 15, 2026.⁴ Dying mid-year does not accelerate anything. If you need more time, Form 4868 filed by April 15 pushes the deadline to October 15.⁵ That extension buys filing time, not payment time, so interest accrues on any unpaid balance from April 15 forward.

Not every death requires a return. The regular income thresholds apply. If income from January 1 through the date of death falls below the standard deduction for the chosen filing status, no return is technically required, though filing one may still make sense to recover withheld tax.

One trap: if the decedent died before filing the prior year’s return, that prior-year return is not the “final” return. It is a regular return on its normal schedule, and the personal representative must file it along with any other unfiled years.⁶ The final return is a separate document covering only the short period from January 1 to the date of death.

Choosing the Filing Status

Status for the year of death follows special rules that can move the tax bill substantially.

A surviving spouse who has not remarried by December 31 of the year of death can file a joint return with the decedent for that year. This is usually the lowest-tax option because it uses the widest brackets and the largest standard deduction, $32,200 for 2026.⁷

For the two tax years after the year of death, the surviving spouse may use qualifying surviving spouse status, which keeps the joint brackets and deduction. This status requires a dependent child or stepchild who lived with the surviving spouse all year. A surviving spouse without a qualifying child files as single or head of household in those later years.⁸⁹

If the decedent was unmarried, the return uses single or head of household status. The 2026 standard deduction is $16,100 for single filers and $24,150 for head of household.⁷ The full standard deduction applies even though the tax year is shorter than 12 months. There is no proration.

What Income Belongs on the Return

Report all income the decedent actually received or that was constructively available before the moment of death: wages, interest, dividends, pension payments, rental income, and business income.¹ Anything that accrues or arrives after the date of death belongs on the estate’s return (Form 1041), not the final 1040.¹⁰

If the decedent made quarterly estimated tax payments during the year of death, claim them as a credit on the final return.⁶ Don’t let these go unclaimed; the estate is a separate taxpayer and cannot borrow them for its own obligations.

Social Security in the Month of Death

Social Security pays in arrears, and SSA cannot pay benefits for the month of death. A check that arrives in August for July benefits must be returned if the recipient died in July.¹¹ Benefits properly received before the month of death go on the final return under the regular taxability rules.

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 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 it 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. The recipient can claim a deduction for the estate tax attributable to that income.¹² This deduction is easy to miss, particularly for beneficiaries inheriting large traditional IRA balances from estates that owed federal estate tax.

Deductions and the Medical Expense Rule

Itemized deductions on the final return are limited to expenses actually paid before death, with one important exception for medical bills. 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 1040 (as itemized deductions subject to the 7.5% AGI floor) or on the federal estate tax return (Form 706). The same expenses cannot appear on both.⁶

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

Documents and Establishing Authority

Gather these before preparing the return:

A certified copy of the death certificate. Fees range from roughly $5 to $30 per copy and vary by state. Order several, because banks, brokerages, and the IRS may each want one.
The decedent’s Social Security number.
Income documents for the period up to the date of death: W-2s, 1099s, and Schedules K-1.
Deduction records: charitable contribution receipts, property tax payments, medical bills, and other deductible expenses paid before death.
Prior-year returns, which help identify recurring income sources and carryforward items like capital losses.

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 tell the IRS you are acting for the decedent, so future correspondence comes to you rather than the decedent’s last known address.²

Signing and Submitting

Signature mechanics depend on who is filing:³

A court-appointed representative signs the return, writes “DECEASED,” the decedent’s name, and the date of death across the top of the form, and adds a title (executor or administrator) next to the signature. 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 property signs as “personal representative.”

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

Claiming a Refund

Two categories of filers do not need Form 1310 when the final return shows a refund: a surviving spouse filing an original joint return, and a court-appointed personal representative filing an original Form 1040 with the court certificate attached.¹⁴

Everyone else files Form 1310 with the return. That covers 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 situation, complete Part II of Form 1310 and attach proof of death.¹⁴

Penalties and Personal Liability

Late filing and late payment trigger the same penalties that apply to any individual return. The failure-to-file penalty is 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.¹⁵ The failure-to-pay penalty is a separate 0.5% per month on the outstanding balance. These penalties come out of the estate, but once assets have been distributed, the personal representative can be on the hook personally.

Federal law gives the government priority over other creditors when an estate cannot cover all its debts. A personal representative who distributes 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.¹⁶ Hold off on large distributions until you have a clear picture of the tax obligations.

To get formal clearance, file Form 5495 to request discharge from personal liability for the decedent’s income, gift, and estate taxes. The IRS has nine months from receipt of the request (six months for trust fiduciaries) to assess additional tax. After that period, or after you pay any amount the IRS determines is owed, you are discharged from personal liability for any later-discovered deficiency.¹⁷

Don’t Confuse the Final 1040 With Estate Returns

From the moment of death, the decedent’s estate becomes its own taxable entity. Income generated by estate assets after the date of death (interest on bank accounts, dividends from stocks, rental income from property) goes on Form 1041, U.S. Income Tax Return for Estates and Trusts, not on the final 1040.¹⁸ Form 1041 is required if the estate earns gross income of $600 or more during the tax year, or if any beneficiary is a nonresident alien. The estate needs its own Employer Identification Number, available online at irs.gov; do not use the decedent’s SSN for estate filings.

Form 706, the federal estate tax return, is also distinct from the final 1040. It reports the total value of the decedent’s estate and is only required for estates above the federal exemption threshold. Most estates fall well below that threshold and never file one.

1
Internal Revenue Service. File the Final Income Tax Returns of a Deceased Person
2
Internal Revenue Service. Instructions for Form 56 – General Instructions
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Internal Revenue Service. How to File a Final Tax Return for Someone Who Has Passed Away
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Internal Revenue Service. Filing a Final Federal Tax Return for Someone Who Has Died
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Internal Revenue Service. Application for Automatic Extension of Time to File U.S. Individual Income Tax Return
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Internal Revenue Service. Publication 559 (2025), Survivors, Executors, and Administrators
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Internal Revenue Service. IRS Releases Tax Inflation Adjustments for Tax Year 2026
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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
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Office of the Law Revision Counsel. 26 U.S. Code 691 – Recipients of Income in Respect of Decedents
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Internal Revenue Service. Publication 502 (2025), Medical and Dental Expenses
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Internal Revenue Service. Form 1310, Statement of Person Claiming Refund Due a Deceased Taxpayer
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Internal Revenue Service. Failure to File Penalty
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Office of the Law Revision Counsel. 31 U.S. Code 3713 – Priority of Government Claims
17
Internal Revenue Service. Form 5495 – Request for Discharge From Personal Liability Under Internal Revenue Code Section 2204 or 6905
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Internal Revenue Service. File an Estate Tax Income Tax Return