When someone dies, filing income tax for a deceased person means handling two possible returns: a final Form 1040 covering income from January 1 through the date of death, and, if the person’s assets continue earning afterward, a separate Form 1041 for the estate. The final 1040 wraps up the individual’s tax life; the 1041 covers what the estate collects during probate. Most families deal with the first. Only some need the second.
Who Has to File
The duty belongs to the decedent’s executor, administrator, or whoever is charged with managing the decedent’s property.1GovInfo. 26 U.S.C. 6012 – Persons Required to Make Returns of Income In practice that means a court-appointed executor named in probate, a personal representative named in the will, or, if no court has acted, the person who steps in to handle the assets. Letters testamentary prove your authority to banks and the IRS.
A surviving spouse can file a joint return for the year of death, provided they didn’t remarry before December 31 of that year.2Internal Revenue Service. How to File a Final Tax Return for Someone Who Has Passed Away The joint return picks up the decedent’s income through the date of death and the spouse’s income for the full year. It usually produces a lower combined bill, but it isn’t required. Married filing separately is available if the numbers work out better.
Preparing the Final Form 1040
The final return uses the same Form 1040 the person would have filed while alive.3Internal Revenue Service. File the Final Income Tax Returns of a Deceased Person You’ll need the decedent’s Social Security number, all W-2s for wages earned before death, and 1099s for interest, dividends, or other income received before that date. Only income actually or constructively received before death goes on this return; anything that arrives afterward belongs elsewhere.
Mark the return clearly. Check the “Deceased” box and write the date of death to the right of the decedent’s name on the name line.4Internal Revenue Service. Topic No. 356, Decedents That notation keeps the return from getting caught in automated identity-theft holds. Tax software prompts for these entries when you file electronically.
Report all income up to the date of death and claim every credit and deduction the decedent was entitled to.5Internal Revenue Service. Filing a Final Federal Tax Return for Someone Who Has Died Pull the prior year’s return. It’s the fastest way to spot recurring income sources — retirement distributions, rental payments, brokerage dividends — that should have generated 1099s for the final year.
Deadline
The final return follows the normal calendar. Someone who dies at any point in 2025 has a return due April 15, 2026.6Internal Revenue Service. Topic No. 301, When, How and Where to File Filing Form 4868 grants an automatic six-month extension to October 15. The extension covers filing, not payment; estimate any balance due and pay it by April 15 to avoid interest. If you mail the return, use certified mail for proof of the filing date.
Deducting Medical Expenses
Medical bills the decedent incurred before death can be deducted on the final Form 1040 even when the estate pays them later, as long as payment happens within one year of the date of death.7Internal Revenue Service. Publication 502, Medical and Dental Expenses To claim it, attach a statement confirming the amount hasn’t been deducted on the estate tax return. It’s a genuine either-or: the same expense can reduce the final 1040 or the taxable estate on Form 706, not both. Since very few estates owe federal estate tax, the income tax deduction is usually the better choice.
Claiming a Refund
If the final return shows a refund, a surviving spouse filing jointly receives it without additional paperwork. A court-appointed representative attaches the court certificate to the return. Anyone else must attach Form 1310, which authorizes the IRS to release the refund to the right person.8Internal Revenue Service. Form 1310, Statement of Person Claiming Refund Due a Deceased Taxpayer
Income That Arrives After Death
Some income was owed to the decedent but hadn’t been received before death. The IRS calls this “income in respect of a decedent,” and it doesn’t go on the final 1040. Whoever receives the payment reports it on their own return, keeping the same character it would have had if the decedent had collected it.9Internal Revenue Service. Publication 559, Survivors, Executors, and Administrators Common examples:
- A final paycheck that arrived after death. Employers report amounts of $600 or more on Form 1099-MISC rather than a W-2.
- Distributions from a traditional IRA the decedent owned, taxable to the beneficiary as withdrawn, up to the decedent’s taxable balance at death.
- Interest on savings certificates or Treasury bonds that had accumulated but wasn’t paid out before death.
- Remaining payments representing a distributive share or guaranteed payment in liquidation of the decedent’s partnership interest.
Where the income lands determines who pays. If the estate collects it, it goes on the estate’s Form 1041. If a named beneficiary collects directly, it goes on that beneficiary’s Form 1040.9Internal Revenue Service. Publication 559, Survivors, Executors, and Administrators
Step-Up in Basis for Inherited Property
Heirs get a valuable break on inherited assets. Property’s tax basis resets to fair market value as of the date of death.10Office of the Law Revision Counsel. 26 U.S.C. 1014 – Basis of Property Acquired From a Decedent Stock the decedent bought for $20,000 that was worth $150,000 at death carries a $150,000 basis in the heir’s hands. Selling for $155,000 produces only $5,000 of capital gain, not $135,000.
The step-up applies broadly to assets included in the decedent’s estate, including real estate, securities, and property held in certain trusts. The personal representative can instead elect an alternate valuation date (generally six months after death) if the estate’s total value has declined.9Internal Revenue Service. Publication 559, Survivors, Executors, and Administrators One exception: if you gave appreciated property to the decedent within the year before death and then inherited it back, you don’t get a step-up. Your basis stays what the decedent’s was immediately before death.
When the Estate Itself Must File
The moment of death creates a new taxable entity. Any income the decedent’s assets generate after that point belongs to the estate: rent from a property the decedent owned, interest on bank accounts, dividends on stock held during probate.11Internal Revenue Service. Instructions for Form 1041 and Schedules A, B, G, J, and K-1
Before filing anything, get the estate its own Employer Identification Number. You can apply online at irs.gov at no cost.12Internal Revenue Service. File an Estate Tax Income Tax Return The estate then files Form 1041 for any year in which its gross income reaches $600 or more, or if any beneficiary is a nonresident alien.11Internal Revenue Service. Instructions for Form 1041 and Schedules A, B, G, J, and K-1
Estate income tax brackets are heavily compressed. For 2026, the top 37% rate hits at $16,000 of taxable income.13Internal Revenue Service. 2026 Form 1041-ES, Estimated Tax for Estates and Trusts An individual filer doesn’t reach that bracket until well over $600,000. That difference is why representatives typically try to distribute income to beneficiaries rather than let it accumulate inside the estate.
How Estate Income Reaches Beneficiaries
When the estate distributes income, it deducts the distributed amount on Form 1041 and issues each beneficiary a Schedule K-1 showing their share of income, deductions, and credits. Beneficiaries report those K-1 amounts on their personal Form 1040.14Internal Revenue Service. 2025 Instructions for Schedule K-1 (Form 1041) for a Beneficiary The income gets taxed at the beneficiary’s individual rate instead of the estate’s compressed rate, which almost always produces a lower total bill.
Beneficiaries must report K-1 items consistently with how the estate reported them. If a K-1 looks wrong, ask the executor for a corrected version rather than changing the numbers on your own return. Filing inconsistently without notifying the IRS on Form 8082 can trigger accuracy-related penalties.14Internal Revenue Service. 2025 Instructions for Schedule K-1 (Form 1041) for a Beneficiary
Estate Income Tax Isn’t the Estate Tax
Form 1041 (estate income tax) and Form 706 (federal estate tax) are entirely separate filings, and mixing them up is a common mistake. Form 1041 taxes what the estate earns after death. Form 706 taxes the total value of everything the decedent owned at death, and only estates above the federal exemption owe anything on that side. For 2026, the exemption is $15,000,000 per individual.15Internal Revenue Service. What’s New – Estate and Gift Tax Nearly all estates owe no estate tax at all. But an estate of any size can still owe income tax if it earns more than $600 during administration.
Protecting Yourself From Personal Liability
A representative who distributes estate assets before paying the government’s claims is personally liable for the unpaid amount.16Office of the Law Revision Counsel. 31 U.S.C. 3713 – Priority of Government Claims That covers both the decedent’s final income tax and the estate’s own income tax. You don’t need a formal IRS assessment to be on the hook; knowing or having reason to know the obligation existed is enough.9Internal Revenue Service. Publication 559, Survivors, Executors, and Administrators
Pay every known tax debt before distributing anything. For formal protection, file Form 5495 after submitting the relevant tax returns. The IRS then has nine months to notify you of remaining tax due. Once you pay that amount, or if the IRS doesn’t respond within the nine months, you’re discharged from personal liability for future deficiencies.17Internal Revenue Service. About Form 5495, Request for Discharge From Personal Liability Under I.R. Code Sec. 2204 or 6905 For estates with complex assets or uncertain tax positions, the wait is worth it.