The final return, and who signs it

After · 8 min read

A person who dies still owes one last income tax return for the part of the year they were alive, and it is filed on the ordinary Form 1040 for that year, on the ordinary deadline. A surviving spouse or a court appointed representative files it. Where neither exists, the person in charge of the property files it and attaches Form 1310 to claim any refund. A surviving spouse who has not remarried during that year may still file jointly for the year of death, and a surviving spouse with a dependent child may use the qualifying surviving spouse status for two years afterward, which preserves joint tax rates and the highest standard deduction.

Why it exists

The tax year does not end because a life did. Income earned from January until the date of death is still income, and withholding taken from it is still withholding. In a great many cases the final return produces a refund rather than a bill, because a full year of withholding was applied to a partial year of income.

The rules about who signs exist to solve a practical problem: the person who would normally sign cannot. So the law names substitutes, in order, and gives each of them a way to prove their authority. That is the entire purpose of Form 1310.

The filing status rules exist for a related reason. Losing a spouse mid-year would otherwise push a household into a harsher tax bracket in the same year it lost an income. The joint filing option for the year of death, and the two years of qualifying surviving spouse status afterward, soften that edge for households with a dependent child.

How it actually works

File the final return on the same form and by the same deadline that would have applied if the person had lived. If they died in 2026, the final return is the 2026 Form 1040, due on the ordinary 2027 filing deadline, and it can be extended in the ordinary way. If earlier years were never filed, those returns may be needed too.

On a paper return, write 'deceased', the person's name, and the date of death across the top. If you are filing electronically, the software will have its own place to record this. The Internal Revenue Service accepts both.

Who signs depends on who you are. A surviving spouse filing jointly signs as the surviving spouse. A court appointed personal representative signs in that capacity and attaches the court document showing appointment. Anyone else who is in charge of the property signs and attaches Form 1310, which is the statement of a person claiming a refund due a deceased taxpayer. A surviving spouse filing a joint return, and a court appointed representative, do not need Form 1310.

Choose the filing status deliberately. For the year of death, a surviving spouse who did not remarry during that year may file married filing jointly or married filing separately. For the two years after, a surviving spouse who has a dependent child may qualify to file as a qualifying surviving spouse, which the Internal Revenue Service describes as allowing joint return tax rates and the highest standard deduction.

Where you stand

You are entitled to the refund, and to a route to collect it. Most final returns generate one. If you are not the surviving spouse and not court appointed, Form 1310 is the mechanism, and it is a short form. Do not let a refund go unclaimed because the account was closed.

You are not personally liable for the tax simply because you filed the return. The tax is the estate's obligation, paid from estate assets. Where you are a personal representative, you do take on responsibility for filing and for paying from estate funds before distributing, which is a different thing and is covered in the module on the estate's own return.

You are entitled to time. The ordinary extension is available on a final return in the same way as on any other. If records are scattered, extend rather than guess. An extension gives more time to file, not more time to pay, so estimate and pay what you can by the original date.

State income tax rules vary. Every state that levies an income tax has its own final return requirements, its own deadline, and its own version of Form 1310. Check your state department of revenue rather than assuming the federal answer carries across.

What to do

The mistakes that cost people

Skipping the final return because the person's income was small. Small income with a full year of withholding is exactly the situation that produces a refund.
Claiming a refund without Form 1310 when it is required, which stalls the refund for months while the Internal Revenue Service asks who you are.
Filing separately in the year of death without comparing. For many households, the joint return in the year of death is the more favorable of the two, and the comparison takes one calculation.
Closing the deceased person's bank account before the refund arrives, leaving a check that cannot be deposited anywhere.

Words you will meet

final return: The income tax return covering the part of the year the person was alive, filed on the ordinary form for that year.
form 1310: The short Internal Revenue Service form used to claim a refund owed to someone who has died, when the filer is not a surviving spouse or a court appointed representative.
qualifying surviving spouse: A filing status available for two years after a spouse's death to a survivor with a dependent child, giving joint tax rates and the highest standard deduction.
personal representative: The executor or administrator appointed by a court, who may sign the final return in that capacity.
withholding: Tax already taken out of wages or payments during the year, which is credited against the final bill and often produces a refund.

What this does not cover

This module does not cover the estate's own income tax return, the federal estate tax, or state inheritance taxes. Each has its own module in this discipline.

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