How to Move From ACA Marketplace Coverage to Medicare at 65
Marketplace coverage does not end automatically when Medicare starts, and premium-tax-credit eligibility can change once you qualify for premium-free Part A.
Most people eligible for premium-free Part A should enroll in Medicare when first eligible rather than keeping subsidized Marketplace coverage. Once Medicare begins, update the Marketplace application to end coverage only for the person starting Medicare.
A spouse or dependent who is not Medicare-eligible may remain on a Marketplace plan. One household can have different coverage for different people.
Why Keeping Marketplace Subsidies Can Create a Tax Bill
Once you are eligible for premium-free Part A—or enrolled in premium Part A—you generally cannot receive Marketplace financial assistance for your own coverage. Continuing advance premium tax credits can lead to repayment when federal taxes are filed.
It does not generally create the current-employment Part B SEP or protect you from late-enrollment penalties.
Do Not Cancel Too Early or Too Late
Confirm the Medicare start
Use the Initial Enrollment Period guide and verify the official dates.
Update the Marketplace application
HealthCare.gov allows you to report a future Medicare start date. End coverage for the Medicare-eligible person, not automatically for everyone.
Confirm remaining household coverage
Recheck the plan and financial assistance for any spouse or dependent staying on Marketplace coverage.
Save the confirmation
Keep the termination date, Marketplace notice and Medicare effective-date documentation.
What If Your Spouse Is Younger Than 65?
Medicare does not cover spouses. A younger spouse may remain eligible for Marketplace coverage and income-based savings, depending on household income and other coverage offers. Retirement distributions and income changes can affect the subsidy estimate.
Use the full guide to spouse health insurance after retirement before ending a family plan.
What If You Must Pay a Part A Premium?
Someone who does not qualify for premium-free Part A can face different Marketplace choices. Medicare.gov says a person who must pay a Part A premium may choose Marketplace coverage instead, but Part B timing, future penalties, costs and eligibility for financial assistance still require careful review.
Do not apply the premium-free Part A rule to someone who must buy Part A. Confirm with Medicare, Social Security and the Marketplace.
Frequently Asked Questions
Does Marketplace coverage end automatically when Medicare starts?
No. Update the Marketplace application and end coverage for the person starting Medicare.
Can I keep receiving premium tax credits after I qualify for Medicare?
Generally not once you are eligible for premium-free Part A or enrolled in premium Part A. Continued credits may need to be repaid.
Can my younger spouse stay on the Marketplace?
Yes, if otherwise eligible. Update the household application rather than cancelling everyone’s coverage.
Does Marketplace coverage let me delay Part B safely?
Generally no. Marketplace coverage is not group health coverage based on current employment.
What if I have to pay for Part A?
Different options can apply. Confirm your Part A status and compare full-price or subsidized Marketplace coverage with Medicare before deciding.
Sources and Enrollment Resources
Coordinate Medicare Without Cancelling the Wrong Coverage
We can help the Medicare-eligible household member compare private Medicare coverage while HealthCare.gov determines Marketplace eligibility and financial assistance for everyone else.
Thompson Medicare Brokerage is not connected with or endorsed by the U.S. government or the federal Medicare program. This page provides general educational information. Social Security or the Railroad Retirement Board makes official Medicare Parts A and B enrollment, effective-date and penalty decisions. Employer, Marketplace and tax consequences depend on individual circumstances.