What happens to my younger spouse's health insurance when I go on Medicare?

Does Medicare cover my spouse?

No. Medicare is different from private insurance: it doesn't offer plans for couples or families, and you don't have to make the same coverage choices as your spouse. Each person signs up for Part A and Part B separately when they become eligible. Supplemental coverage is individual too: a Medigap (Medicare Supplement Insurance) policy covers only one person, so spouses must buy separate coverage.

When can my younger spouse get Medicare?

Medicare is health insurance for people 65 or older who meet citizenship or residency requirements, so your spouse generally becomes eligible at 65, in their own 7-month Initial Enrollment Period that starts 3 months before they turn 65 and ends 3 months after the month they turn 65. A spouse may be eligible earlier with a disability, End-Stage Renal Disease (ESRD) or ALS (Lou Gehrig's disease). See Who is eligible for Medicare?.

People usually don't pay a Part A premium if they or another qualifying person, like a current or former spouse, paid Medicare taxes while working for a certain amount of time, usually 10 years for people 65 or older. People who don't qualify for premium-free Part A can buy it for $311 or $565 a month in 2026, depending on how long they or their spouse worked and paid Medicare taxes.

What are my spouse's options if they lose coverage through my job?

If your spouse is on your employer plan and that coverage ends when you retire, these are the options official pages describe:

• COBRA: a federal law that may let your spouse keep your employer group health plan coverage for a limited time after your employment ends. COBRA is generally offered for 18 months (36 months in some cases) and generally applies to employers with 20 or more employees, though some states have mini-COBRA laws for smaller employers.
• A Marketplace plan: losing coverage through a spouse or a family member's employer plan can qualify your spouse for a Special Enrollment Period if the coverage was lost in the past 60 days or will end in the next 60 days. HealthCare.gov notes your spouse doesn't have to take COBRA and can compare its cost with Marketplace plans before deciding.
• After COBRA ends: your spouse has 60 days to enroll in a Marketplace plan through a Special Enrollment Period. Voluntarily dropping COBRA early doesn't qualify; your spouse would wait for Marketplace Open Enrollment (November 1 to January 15) unless another life event qualifies them.
• Retiree coverage: your employer or union may offer retiree coverage for you and/or your spouse. Ask the benefits administrator whether your family's benefits will change when you get Medicare.

Can my Medicare choices affect my spouse's employer or retiree coverage?

Yes. Medicare.gov warns that if you have employer or union coverage and get Medicare drug coverage, you may lose your employer or union health and drug coverage for you and your dependents, and you may not be able to get it back. In some cases, joining a Medicare Advantage Plan might also cause you to lose employer or union coverage for yourself, your spouse and your dependents.

Before you get Medicare drug coverage, check with your retiree coverage to find out whether coverage for yourself, your spouse or your dependents would end, and call your benefits administrator before you make any changes. See Do I need to sign up for Medicare at 65 if I'm still working? if either of you is still working.

What happens to a Marketplace plan we share when I get Medicare?

Marketplace coverage doesn't end automatically when Medicare starts. Update your Marketplace application to end coverage for the person starting Medicare; you can report a Medicare start date up to 3 months before it begins, and then confirm the plan for others in your household who need to keep their Marketplace coverage. For example, if your Medicare begins May 1, you can update the application as early as February 1, and your Marketplace coverage ends April 30.

Once you're eligible for premium-free Part A, you won't qualify for Marketplace help paying your own premiums, and if you keep getting that help you may have to pay some or all of it back when you file your federal income taxes. Medicare.gov also warns that once you're eligible for Part A, your Marketplace plan may not renew your coverage at the end of the year, which could leave you and your family with a gap in coverage starting January 1.