How Should a Widow File Taxes: Surviving Spouse and Portability

A widow should file taxes jointly with her late husband for the tax year he died, then file as a qualifying surviving spouse for the next two years if a dependent child lives in the home, and then shift to head of household or single filing after that. Each status carries a different standard deduction and a different bracket structure, so picking the right one in each year is the single biggest lever you have over your tax bill.

The Year Your Spouse Died: File Jointly

The IRS treats a couple as married for the entire year in which a spouse dies, even if the death happened on January 1.¹ You file one Form 1040 covering your late husband’s income through the date of death and your own income for the full year.²

Joint filing is almost always the right call. For 2026 the married-filing-jointly standard deduction is $32,200, compared to $16,100 for a single filer, and the joint brackets are wider so more of your income stays in lower rates.³ Married filing separately is available, but it shrinks the deduction, locks you out of several credits, and raises rates on the same income. The realistic reason to choose it is to avoid liability for errors or unreported income on your spouse’s side of the return.

Signing the Final Joint Return

Write the date of death next to your spouse’s name at the top of the return. If a personal representative or executor has been appointed for the estate, that person signs alongside you and attaches a copy of the court document granting authority, such as letters testamentary.⁴ If no executor has been appointed, you sign yourself and write “Filing as surviving spouse” in the signature area where your spouse would have signed.²

The filing deadline is the same as any other year: April 15, 2026, for calendar-year filers.⁵ You can request an automatic six-month extension, but any tax owed is still due April 15.

If you’re claiming a refund on the joint return, you don’t need Form 1310. That form is only required when someone other than a surviving spouse or court-appointed representative claims a refund owed to a deceased taxpayer.⁶

If You Remarry Before Year-End

If you remarry before December 31 of the year your spouse died, you file with your new spouse, either jointly or separately. Your late husband’s final return is then filed as married filing separately.⁷

The Next Two Years: Qualifying Surviving Spouse

For the two tax years after the year of death, you may qualify for “qualifying surviving spouse” status. It keeps you in the same tax brackets as a joint filer and preserves the same $32,200 standard deduction for 2026.³ It’s the best status available once the year-of-death joint return is behind you, and every condition must be met:⁷

You must be unmarried at the end of the tax year.
You must have been entitled to file jointly with your spouse in the year of death.
A qualifying child or stepchild must have lived in your home for the entire tax year. Temporary absences, such as school, don’t count against you.
You must have paid more than half the cost of maintaining the home, including property taxes, mortgage interest or rent, utilities, repairs, and groceries.¹

The dependent-child requirement is what trips up most widows. If your children are adults or no longer live with you, this status is unavailable, and you go straight from the year-of-death joint return to head of household or single filing the following year.

After the Two-Year Window

Once qualifying surviving spouse status expires, you file as head of household if a qualifying dependent still lives with you and you pay more than half the cost of keeping up the home.¹ The head of household standard deduction for 2026 is $24,150, a step down from $32,200 but well above the $16,100 single deduction, and the brackets are more favorable than single as well.³

If no qualifying dependent lives with you, you file as single. It’s the least favorable status in both deduction size and bracket width, but there’s no way around it once the conditions for the other statuses are gone.

Don’t Skip the Portability Election

Filing status covers your income tax return, but there’s a separate decision tied to your spouse’s death that can dwarf everything else on the tax side: the portability election. Every individual has a federal estate tax exclusion, which for 2026 is $15,000,000.⁸ If your late husband didn’t use all of his exclusion, the unused portion can transfer to you, effectively doubling the exclusion available at your own death to as much as $30,000,000.

Portability isn’t automatic. You have to file Form 706 and make the election, even if the estate is small enough that no estate tax is owed and no return would otherwise be required.⁹ Form 706 is due nine months after the date of death, with an automatic six-month extension available by filing Form 4768.¹⁰

If you missed that window, there may still be time. For estates that weren’t otherwise required to file, Revenue Procedure 2022-32 allows a late portability election if Form 706 is filed within five years of the date of death, with a notation at the top stating it’s filed under that procedure.¹¹ No user fee is required. Skipping this election because the estate was “too small to need a return” is one of the most expensive mistakes in estate planning.

What Goes on the Final Joint Return

The final Form 1040 picks up all wages, interest, dividends, pension payments, and other income your spouse earned or received through the date of death, plus your own income for the full year.¹² The return can claim the full standard deduction or itemized deductions, just as if both spouses were alive for the entire year.

Income your spouse was entitled to but hadn’t received at death is called “income in respect of a decedent.” It’s taxable to whoever actually receives it, whether that’s you, the estate, or another beneficiary. Common examples are unpaid salary, accrued bond interest, and retirement account distributions that were owed but not yet paid. Ask brokerage and bank statements to clearly separate earnings through the date of death from anything that accrued afterward, because the reporting responsibility shifts at that line.²

Medical Expenses From the Final Illness

Medical expenses related to your spouse’s final illness that are paid within one year after death can be treated as if he paid them while alive and deducted on the final Form 1040.¹³ If the executor claims them there, he or she must attach a statement confirming those expenses won’t also be deducted on the estate tax return. You can’t claim them in both places.

Unused Capital Losses

If your spouse had unused capital losses from prior years, or realized a net capital loss in the year of death, those losses can only be claimed on the final return. They don’t carry over to the estate or to your future returns.¹⁴ If your spouse had been carrying forward a large capital loss, the final joint return is the last chance to use any of it.

One correction worth knowing: the personal exemption remains at $0 for 2026, made permanent by the One, Big, Beautiful Bill Act.³ There’s no separate line-item deduction for it on the return.

1
Internal Revenue Service. Publication 501 (2025), Dependents, Standard Deduction, and Filing Information
2
Internal Revenue Service. Publication 559 (2025), Survivors, Executors, and Administrators
3
Internal Revenue Service. IRS Releases Tax Inflation Adjustments for Tax Year 2026
4
Internal Revenue Service. Filing a Final Federal Tax Return for Someone Who Has Died
5
Internal Revenue Service. When to File
6
Internal Revenue Service. Form 1310 – Statement of Person Claiming Refund Due a Deceased Taxpayer
7
Internal Revenue Service. Filing Status (Publication 4491)
8
Internal Revenue Service. What’s New – Estate and Gift Tax
9
Internal Revenue Service. Frequently Asked Questions on Estate Taxes
10
Internal Revenue Service. Instructions for Form 706
11
Internal Revenue Service. Revenue Procedure 2022-32
12
Internal Revenue Service. File the Final Income Tax Returns of a Deceased Person
13
Internal Revenue Service. Publication 502 (2025), Medical and Dental Expenses
14
Internal Revenue Service. Decedent Tax Guide