Tax Planning After a Spouse Dies

By Tom, CPA · Updated October 27, 2026

Part of: Tax Planning

TL;DR: You can file jointly for the year of death. With a dependent child, joint brackets continue two more years. Inherited assets step up in basis, spouses can roll over IRAs, and a home sold within two years keeps the $500,000 exclusion. Consider filing Form 706 for portability.

Educational only, not tax, legal, or investment advice. Examples are illustrations, not predictions. Rules and limits change; verify current figures and talk to a qualified professional about your situation.

The tax code is 4 million words long, and almost none of them were written with grief in mind. Still, losing a spouse sets off a series of tax deadlines and one-time choices, some of which are worth tens of thousands of dollars and some of which cannot be fixed later. This guide is a calm, practical walk through them.

It covers the final joint return, filing status for the next few years, the step-up in basis, inherited retirement accounts, the house, estate tax portability, Medicare and Social Security, and a timeline. Take it in pieces. Very little has to happen in the first month. Law as of Oct 2026.

CPA Warning Label: Deadlines here are firm and some elections are irreversible. Have the final return, basis step-up and portability decision reviewed by a professional.

The final joint return

For the year your spouse dies, you can still file a joint return, as long as you do not remarry before year-end. The joint return includes your spouse's income through the date of death and all of yours for the full year. You get the full joint standard deduction: $32,200 for 2026, plus additional amounts for age 65+ or blindness.

The return is due on the normal deadline, April 15 of the following year. Sign it yourself and write "filing as surviving spouse" in the signature area. If an executor or administrator has been appointed, they also sign.

If a refund is due and you are not the court-appointed representative, the IRS may want Form 1310. A surviving spouse filing jointly usually does not need it.

Income earned after death, such as a final paycheck paid later or investment income in your spouse's own name, may belong on the estate's income tax return (Form 1041) rather than your 1040. Publication 559 has the details.

Filing status for the next two years

If you have a dependent child living with you and paid more than half the household cost, you can file as a qualifying surviving spouse for the two years after the year of death (Publication 501). This status uses joint return brackets and the joint standard deduction. It is worth a lot: in 2026 the 22% bracket ends at $211,400 for joint and surviving spouse filers versus $105,700 for single.

Without a qualifying child, you file single starting the year after death, or head of household if you support another qualifying person. This "widow's penalty" pushes many surviving spouses into higher brackets on similar income, and it is a major planning point for retirees.

Step-up in basis

Inherited property generally receives a new basis equal to fair market value on the date of death. For couples, how much steps up depends on ownership:

• Jointly owned property in common law states: half the property (the decedent's share) steps up; your half keeps its original basis.
• Community property states (such as California, Texas and Arizona): both halves of community property step up, which can wipe out the entire built-in gain.
• Property owned solely by the decedent and left to you steps up fully.
• Retirement accounts never step up; distributions remain taxable.

Get date-of-death values for brokerage accounts, real estate (an appraisal), and other assets now. Brokerages will usually update cost basis if you send a death certificate, but verify it. This step can save years of overpaid capital gains tax. See capital gains tax planning.

Inherited IRAs and 401(k)s

Spouses get the most flexible options of any beneficiary (Publication 590-B):

• Treat as your own or roll over into your own IRA. Required minimum distributions then follow your own age. Best for most surviving spouses who do not need the money before 59½.
• Remain a beneficiary in an inherited IRA. Withdrawals are penalty-free at any age, which helps younger survivors who need cash. You can roll over later.
• Roth IRAs inherited by a spouse can be treated as your own, with no RMDs during your life.

If your spouse was already taking RMDs and had not taken the current year's, you must take it by year-end. Check beneficiary forms; they override wills.

A common pattern: a surviving spouse under 59½ keeps part of the money as an inherited IRA for penalty-free access and rolls the rest into their own IRA. You can split the account this way. Whatever you choose, do the move by trustee-to-trustee transfer, not a check, so nothing is withheld or accidentally treated as a distribution.

The house

If you sell your main home within two years after your spouse's death, and you have not remarried, you can still exclude up to $500,000 of gain, as long as the joint requirements were met immediately before death (Publication 523). After that window, the single limit of $250,000 applies.

Combine that with the step-up: in a common law state, half the home's basis resets to the date-of-death value. In a community property state, the whole home may step up. Many surviving spouses owe nothing on a sale.

See the home sale exclusion and the real estate tax checklist.

Estate tax and portability

The federal estate tax exclusion is $15 million per person for 2026, under Rev. Proc. 2025-32, and the 2025 tax act made the higher exclusion permanent with indexing. Most estates owe no federal estate tax.

But portability matters even for estates well below that: by filing Form 706 for the deceased spouse, the survivor can keep the unused exclusion (the DSUE amount). That protects against future law changes, a large inheritance, or asset growth. Executors of estates not otherwise required to file can elect portability up to five years after death under Rev. Proc. 2022-32.

Some states have their own estate or inheritance taxes with much lower thresholds and no portability. See estate planning basics.

Illustration: the widow's penalty

Illustration: a retired couple has $120,000 of taxable income before the standard deduction in 2026: pensions, IRA withdrawals and Social Security. One spouse dies in 2026. The survivor keeps one pension and the larger Social Security benefit, so income falls to $95,000 in 2027, and there are no dependents.

*Using the 2026 single standard deduction of $16,100 for illustration; 2027 figures were not yet published as of Oct 27, 2026.

Income fell about 21%, but the top bracket jumped from 12% to 22%. Planning ideas: Roth conversions while still filing jointly in the year of death, at 12%, before the single brackets apply. Spending down taxable accounts first. Watching IRMAA, since Medicare surcharge thresholds for singles are half of joint.

Assumptions: simplified; ignores the age 65 additional standard deduction and the $6,000 senior deduction, which reduce taxable income further for 2025-2028.

Medicare, Social Security and a timeline

• Social Security: report the death to SSA. The survivor keeps the larger of the two benefits, not both. A $255 lump-sum death benefit may apply.
• IRMAA: death of a spouse is a life-changing event. File Form SSA-44 to ask Medicare to use current income. See IRMAA planning.
• Long-term care: revisit coverage and plans. See long-term care planning.
• Real estate professional status: if your spouse qualified, that status may not carry over. See the REPS spouse strategy.

Timeline: first 90 days: death certificates, SSA notice, date-of-death values, beneficiary claims. By year-end: any RMD due, Roth conversion decisions. By April 15: the final joint return. Within 9 months (or 5 years for portability only): Form 706. Within 2 years: decide on the house if a $500,000 exclusion matters. More in the tax planning hub.