When One Spouse Retires Before the Other: Medicare and Taxes

When one spouse retires before the other, the household has to run on two tracks at once: a fixed-income track and a paycheck track. That split creates a short list of decisions with hard deadlines, including health coverage for the retiring spouse, Medicare enrollment timing, when to claim Social Security, how to use the temporary dip in income for tax planning, whether to keep funding an IRA in the retired spouse’s name, and how to elect a pension payout. Miss the window on any of them and the penalty is often permanent.

Health Coverage for the Retiring Spouse

Losing job-based coverage is a qualifying life event, which opens a Special Enrollment Period to join the working spouse’s employer-sponsored plan.¹ You generally have 60 days from the date coverage ends to enroll. Miss it and you wait for the next open enrollment. Call the working spouse’s HR office early, because some employers set their own internal deadlines inside that 60-day federal window.

COBRA as a Short Bridge

Voluntary retirement counts as a qualifying event under COBRA, since it is treated as a termination of employment for any reason other than gross misconduct. COBRA lets the retiring spouse keep the former employer’s group plan for up to 18 months, but the retiree pays the full premium (both the employee share and the employer share) plus a 2% administrative fee. That commonly doubles or triples what the premium was during employment. Only employers with 20 or more employees are required to offer COBRA.² COBRA works best as a bridge of a few months, for example when the retiring spouse is close to turning 65 and qualifying for Medicare.

Marketplace Coverage

If the working spouse’s employer plan does not cover spouses, an ACA marketplace plan is the other option. Premiums depend on age and household income, not health history, and plans cover pre-existing conditions.¹ Premium tax credits can lower the monthly cost, but for 2026 the enhanced subsidies from earlier years have expired, so assistance phases out completely once household income exceeds 400% of the federal poverty level, roughly $84,600 for a two-person household. One spouse’s continuing wages can push a household past that threshold quickly, so estimate projected annual income carefully before selecting a plan.

Medicare Timing When You Still Have Employer Coverage

If the retired spouse is covered under the working spouse’s employer group health plan based on the working spouse’s current employment, the retired spouse can delay Medicare Part B without penalty.³ Once the working spouse’s employment ends, or the group coverage ends, whichever comes first, the retired spouse has an eight-month Special Enrollment Period to sign up for Part B. Coverage begins the month after enrollment is processed.⁴

Missing the eight-month window triggers a late enrollment penalty of 10% added to the monthly Part B premium for every full 12-month period the retiree could have been enrolled but was not. The standard Part B premium in 2026 is $202.90 per month, and the penalty is generally permanent for as long as the person has Part B.⁵ A two-year delay would add roughly $40 per month to every future premium.

Which Plan Pays First

When the retired spouse has both Medicare and employer coverage, one plan pays primary and the other pays secondary. For age-based Medicare, the employer plan pays first if the employer has 20 or more employees. If the employer has fewer than 20 employees, Medicare pays first.⁶ Confirm the order with both the plan administrator and Medicare, because claim denials often trace back to a mismatch here.

Health Savings Accounts After One Spouse Enrolls in Medicare

Once the retired spouse enrolls in Medicare, that spouse can no longer contribute to a Health Savings Account. The working spouse can still contribute to their own HSA, including up to the family maximum of $8,750 for 2026, as long as the working spouse stays enrolled in a qualifying high-deductible health plan and is not enrolled in Medicare.⁷ HSA funds can be used to pay the Medicare-enrolled spouse’s qualified medical expenses, including Medicare premiums.

Social Security Decisions for Both Spouses

Social Security lets a lower-earning or non-working spouse claim a benefit based on the other spouse’s earnings record. The maximum spousal benefit is 50% of the working spouse’s primary insurance amount, meaning the monthly benefit the worker would receive at full retirement age.⁸

Deemed Filing

When you apply for any Social Security retirement benefit, you are automatically deemed to have filed for every benefit you are eligible for, including any spousal benefit. You receive whichever amount is higher, not both.⁸ The working spouse generally must be receiving their own retirement benefit, or have filed for it, before the retired spouse can claim a spousal benefit on that record.

Claiming a spousal benefit before full retirement age permanently reduces it. Full retirement age is 66 to 67 depending on birth year. Waiting until full retirement age locks in the full 50% amount. Claiming a spousal benefit does not reduce the working spouse’s own monthly payment; the two amounts are calculated independently.

The Earnings Test if the Working Spouse Claims Early

If the working spouse claims Social Security before full retirement age while still working, the retirement earnings test temporarily reduces benefits. In 2026, Social Security withholds $1 for every $2 earned above $24,480. In the calendar year the working spouse reaches full retirement age, the threshold rises to $65,160 and the withholding rate drops to $1 for every $3 earned above that limit.⁹ Once the working spouse reaches full retirement age, the earnings test goes away, and any previously withheld amounts are folded back into a higher future benefit.

Because the working spouse’s benefit anchors the spousal benefit, many couples in this position have the working spouse wait until full retirement age or later to file. That avoids the earnings test entirely and builds a larger benefit for both spouses.

Tax Planning During the Income Gap

One salary plus no distributions often produces a temporary dip in household income. That dip is a planning opportunity.

Where the Brackets Sit

For 2026, married couples filing jointly pay 10% on the first $24,800 of taxable income, 12% from $24,801 to $100,800, and 22% from $100,801 to $211,400. The standard deduction is $32,200.¹⁰ Once one salary is gone and neither Social Security nor required minimum distributions have started, the household often sits a bracket lower than it will later. That is the window to consider pulling taxable income forward.

Roth Conversions

A Roth conversion moves money from a traditional IRA or 401(k) into a Roth IRA. You pay income tax on the converted amount in the year of the conversion, and future qualified withdrawals come out tax-free.¹¹ Converting during a lower-bracket year can cost less than withdrawing the same money later, when both spouses are drawing Social Security and RMDs.

There is no income limit on who can convert. Converted amounts must stay in the Roth for at least five years, and you must be at least 59½, before earnings can be withdrawn tax-free and penalty-free. If you are 73 or older, you must take the year’s required minimum distribution before converting; RMD amounts themselves cannot be converted.¹²

Watch the Medicare Premium Surcharge

Large conversions or other income spikes can trigger the income-related monthly adjustment amount, or IRMAA, on Medicare premiums. Medicare uses your tax return from two years prior, so a big conversion in 2026 could raise Part B and Part D premiums in 2028. For married couples filing jointly in 2026, IRMAA kicks in when modified adjusted gross income exceeds $218,000, adding $81.20 per month per person to Part B at that first tier, with higher income levels bringing progressively larger surcharges up to an additional $487.00 per month.¹³ Many couples aim to convert just enough to fill a lower bracket without crossing the IRMAA threshold.

When RMDs Start

The retired spouse who holds traditional IRAs, SEP IRAs, or similar accounts must begin taking required minimum distributions at age 73.¹² These distributions are taxable, and combined with a working spouse’s salary they can push the household into a higher bracket or trigger IRMAA. The years before 73 are usually the best window for the conversions above.

Funding an IRA for the Retired Spouse

Even after one spouse stops working, the household can keep funding a retirement account in the retired spouse’s name. Under the spousal IRA rules, a working spouse can contribute to an IRA for a non-working spouse as long as the couple files a joint federal tax return.¹⁴ The working spouse’s earned income for the year must be at least equal to the total contributed to both spouses’ IRAs combined.

For 2026, each spouse can contribute up to $7,500, or $8,600 if age 50 or older.¹⁵ A couple where both spouses are 50 or older could put in a combined $17,200, provided the working spouse earns at least that much.

Deductibility

Whether the contribution is tax-deductible depends on income and workplace-plan coverage. For 2026, if the working spouse participates in an employer retirement plan such as a 401(k), the deduction for contributions to the non-working spouse’s IRA phases out between $242,000 and $252,000 of household income.¹⁶ If the working spouse has no employer plan, there is no income limit on deductibility for either spouse’s traditional IRA contribution. Even where the deduction is unavailable, the contribution itself is still allowed, and a non-deductible traditional IRA or a Roth IRA (subject to its own income limits) still shelters the growth.

Excess Contributions

Contributing more than the annual limit, or more than the working spouse’s earned income, creates an excess contribution. The IRS charges a 6% penalty each year on any excess amount left in the account.¹⁷ Withdrawing the excess and any earnings on it before the tax-filing deadline, including extensions, avoids the penalty.

Pension Election and Survivor Protection

If the retiring spouse has a private-sector pension, the payout election is one of the most consequential decisions the couple will make, and federal law defaults to protecting the surviving spouse.

Under ERISA, pension plans must pay married participants in the form of a qualified joint and survivor annuity unless the couple chooses otherwise.¹⁸ The retiree receives a monthly payment for life, and after the retiree dies the surviving spouse continues to receive at least 50% of that amount.¹⁹ The monthly amount during the retiree’s lifetime is lower than a single-life annuity would provide, because the plan is funding two lifetimes. Larger survivor percentages, such as 75% or 100% where offered, further reduce the retiree’s monthly check.

Choosing a single-life payout, which pays more each month but stops entirely at the retiree’s death, requires the non-retiring spouse to consent in writing. The consent must acknowledge the specific financial consequences of giving up the survivor benefit and be witnessed by a plan representative or notary public.¹⁸ The rule exists so one spouse cannot unilaterally elect a higher payment that leaves the other with nothing.

Plan administrators must provide a written comparison of the joint-and-survivor option and the single-life option before any election is made. Weigh those numbers against the surviving spouse’s other likely income, including Social Security, IRA balances, and any separate savings, before deciding whether the higher single-life payment is worth giving up survivor protection.

1
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2
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3
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