The widow’s penalty

When a husband or wife dies, the survivor generally files as a single person beginning the year after the death. Household income often stays fairly close to what it was: the larger Social Security check continues, a pension with a survivor option keeps paying, and the IRAs pass to the survivor. But the tax brackets, the standard deduction and several income thresholds are roughly cut in half. The result is a higher tax bill on a similar, or even smaller, income. It is called the widow’s penalty because women more often outlive their husbands. The rules are the same for widowers.

Six places a survivor feels it

The brackets. For 2026 the 12% bracket ends at $100,800 of taxable income on a joint return and at $50,400 for a single filer. A couple comfortably in the 12% bracket can see the survivor’s income taxed at 22% with nothing changed but the filing status.

Social Security. The smaller of the two benefits stops. The survivor keeps the larger check, not both. Household income goes down, but the house, the car, the insurance and the property tax bill do not get cut in half.

Medicare premiums. The IRMAA surcharge starts above $218,000 of modified AGI on a joint return and $109,000 for a single filer. The standard Part B premium is $202.90 a month; with surcharges it can reach $689.90, plus a Part D surcharge.

Taxable Social Security. Benefits start being taxed above $32,000 of “provisional income” on a joint return but $25,000 for a single filer, and up to 85% is taxed above $44,000 joint or $34,000 single. These lines have never been adjusted for inflation.

The senior deduction. A married couple both 65 or older gets two $6,000 senior deductions, phasing out above $150,000. The survivor gets one, phasing out above $75,000. The extra standard deduction for age also shrinks from two to one.

Investment income. The 3.8% net investment income tax applies above $250,000 on a joint return but $200,000 single. The 0% rate on long-term capital gains is cut in half, from $98,900 of taxable income to $49,450.

*A surviving spouse keeps the $500,000 exclusion for a sale within two years after the date of death. Brackets and deductions from IRS Rev. Proc. 2025-32; Medicare figures from CMS. The Social Security and investment-income thresholds are written into law and never indexed.

When it starts

The year of death: still joint. A surviving spouse can generally file a joint return for the year the spouse died, with the full joint brackets and standard deduction, as long as the survivor has not remarried by December 31. It is often the last year at joint rates, which is why it matters for planning.

The next two years, with a dependent child. A survivor with a dependent child at home, who pays more than half the cost of the home, can file as a qualifying surviving spouse for the two years after the death and keep the joint brackets. Most retirees do not qualify because their children are grown.

After that: single. The survivor files single, or head of household if a qualifying relative such as a dependent parent makes them eligible. Head of household brackets fall between single and joint.

Medicare, two years behind. IRMAA is based on the tax return from two years earlier, so the surcharge often shows up two or three years after the death, when the survivor is least expecting it. If income dropped because of the death, Form SSA-44 asks Social Security to use a more recent year. The death of a spouse is one of the listed life-changing events.

Planning ideas, while there are still two of you

Roth conversions at joint rates. Converting part of a traditional IRA to a Roth is taxed now, at joint rates, instead of later at the survivor’s single rates. Filling the 12% or 22% joint bracket year by year shrinks the IRA the survivor will be drawing from, and Roth withdrawals never count toward taxable Social Security or Medicare premiums. The conversion raises income for the IRMAA test two years later, and one dollar over a threshold triggers the whole tier, so conversions are sized to land just under the lines.

Qualified charitable distributions. At 70½ or older, up to $111,000 a year (2026) can go straight from an IRA to charity. It never shows up in income, it counts toward the required minimum distribution, and it works whether or not you itemize. For a survivor, keeping income off the return helps three ways at once: a lower bracket, less taxable Social Security, and lower Medicare premiums.

Gains while the 0% line is $98,900. Realizing some long-term gains now, and buying back if you want, raises the basis at a low rate. This needs care: at death, the half of jointly owned property that belonged to the spouse who died gets a stepped-up basis, and selling a highly appreciated asset shortly before a death gives that up.

Pension options, insurance and beneficiaries. A single-life pension pays more now; a joint-and-survivor option protects the survivor, and the choice usually cannot be changed once payments start. Life insurance is generally not taxable and can replace the Social Security check that stops. IRA, 401(k), annuity and life insurance beneficiary forms override the will; old forms often name an ex-spouse or a parent who has died.

Withholding. Withholding on pensions, IRAs and Social Security that worked on a joint return will usually fall short on a single one. Update Forms W-4P and W-4V, or estimated payments, the first year after the death.

If your spouse has died this year

There is no rush on most decisions, and none of this has to be figured out alone. But a few things are worth considering before the year is out, because this is usually the last year a joint return can be filed.

1. Use the joint brackets while you have them. Income that lands by December 31 is taxed at joint rates; the same income next year may be taxed at single rates. A partial Roth conversion, an extra IRA withdrawal or a planned capital gain, sized to stay within the 12% or 22% joint bracket and under the Medicare lines, can be worth thousands.
2. Take your spouse’s required distribution if they had not. It still has to come out, to you as beneficiary, by December 31. The IRS waives the penalty if it is taken by next year’s filing deadline, but taking it now keeps it on this year’s joint return.
3. Do not rush the inherited IRA decision. A surviving spouse can roll the IRA into their own or keep it as an inherited IRA, and there is no deadline. Under 59½ and likely to need the money? Keeping it as an inherited IRA avoids the 10% early-withdrawal penalty. You can roll it over later.
4. Get date-of-death values. Your spouse’s share of investments, the house and other property takes a new basis equal to its value on the date of death. Ask each brokerage for the values now and consider an appraisal on the home. These numbers decide the tax when you sell, years from now, and they are much harder to reconstruct later.
5. Check withholding and estimated payments. If your spouse’s paychecks, pension or Social Security were covering much of the household’s withholding, this year’s return may come up short. A fourth-quarter estimated payment by January 15 avoids a penalty. Then reset next year’s withholding for single rates.
6. Contact Social Security. You keep the larger of the two checks; if yours was the smaller, switching to the survivor benefit is not always automatic. A payment deposited for the month your spouse died usually has to be returned. The one-time $255 death payment has to be applied for.
7. Make charitable gifts this year. Gifts by December 31 count on the joint return. At 70½ or older, a gift straight from the IRA keeps the money out of income altogether, which also helps next year’s Medicare premiums.
8. Update your own beneficiaries. Your IRAs, 401(k), life insurance and bank accounts probably name your spouse. Name new beneficiaries now so those accounts do not end up in probate.