What Happens to Our Retirement Savings and Taxes When One Spouse Dies?

A plan for two people needs to work for one, too

Most couples plan for retirement together. They think about when to stop working, when to start Social Security, and how much they can spend. But what happens when one person is gone? Some income may stop. The surviving spouse may file taxes as a single person in later years. And required minimum distributions, or RMDs, can add taxable income even when the money is not needed for daily bills. RMDs are withdrawals that tax rules require from certain retirement accounts.

A good retirement plan looks at both stages: the years together and the years one spouse may spend alone. See Betty Jones’s case study for more about RMDs.

David and his spouse: A different way to plan

David is 64 and plans to retire at 67. His household has $1.6 million in retirement savings. The couple expects $62,400 a year in Social Security benefits once both are collecting, and plans to spend $100,000 a year after taxes. SageonRQ compared their current path with a modeled strategy that includes Roth conversions. A Roth conversion moves money from a traditional retirement account to a Roth account and generally creates taxable income that year.

The Audit evaluated 9,176 strategies. The figures below are projections through the plan’s age-90 horizon, not guaranteed results.

While both spouses are living

After-tax ending value is the projected amount left after accounting for taxes embedded in the ending retirement savings.

What these numbers mean for the couple

Their modeled after-tax ending value is $7,903 higher. Their projected lifetime RMDs fall by $1,643,703, and their Roth savings grow by more than $2.8 million. The modeled ending retirement portfolio is entirely in Roth accounts. Under current tax rules, qualified Roth withdrawals generally do not add to federal taxable income. That can give the couple more choice when they need extra money for a large expense.

Moving savings into Roth accounts can also reduce how much of their retirement money is exposed to future income tax rate increases. It does not protect them from every possible change in tax law.

There is a cost. The modeled strategy projects $23,505 more in household lifetime taxes. The goal is to compare what the couple gains with what they give up. The drop in RMDs is a drop in required withdrawals, not an equal amount of tax savings.

What changes for the surviving spouse?

The difference is much larger in SageonRQ’s separate surviving-spouse analysis. The report compares the spouse’s projected outcomes under the two strategies.

In the survivor analysis, projected taxes fall by about $307,540 and required withdrawals fall by about $1.29 million. The surviving spouse also ends with about $2.54 million more in Roth savings, with a projected Roth share of 100%. These are results from a separate survivor comparison. They should not be added to the couple’s lifetime results as extra benefits. Fewer RMDs do not mean the same amount in tax savings.

Why might this matter? The surviving spouse may need to pay bills, handle a home repair, or cover care costs alone. Having more Roth savings could allow qualified tax-free withdrawals without adding taxable income. That can be especially useful when the survivor has fewer tax breaks available.

Does this mean every couple should convert to Roth?

No. Roth conversions generally create taxable income in the year they happen. They may also affect Medicare premiums or other tax costs. The right amount and timing depend on each household’s income, savings, tax rates, and goals. Some plans may be better without conversions.

Common questions

Will my spouse pay more taxes after I die?

Possibly. A surviving spouse may later file as single, and some income may stop while required withdrawals continue. The result depends on the household.

Can Roth savings help a surviving spouse?

Yes, but the benefits depend on your personal and financial circumstances. Qualified Roth withdrawals are generally free from federal income tax, which may help a surviving spouse manage taxes and retirement income. However, the value of Roth planning depends on several factors, including income, account balances, future tax rates, and beneficiary rules. That is why it is important to evaluate your specific situation before deciding whether Roth conversions make sense for you and your spouse. SageonRQ can help you compare the possible benefits and costs based on your retirement information.

Do Roth conversions always save taxes?

No. Conversions can raise taxes today. Their value depends on the full retirement plan, including future withdrawals and tax rates.

Do fewer RMDs mean the same amount in tax savings?

No. An RMD is a required withdrawal, not a tax bill. Lower RMDs can reduce forced taxable income, but the dollar amounts are not equal to tax savings.

Does the Audit tell us exactly what to do each year?

The Audit shows the comparison. Navigator is planned to provide the detailed year-by-year strategy and alternative choices.