What is the 6-month HSA rule for Medicare?
Answered by 4 licensed agents
The issue comes up when someone delays Medicare past age 65 and continues contributing to an HSA. When they eventually apply for Medicare, Medicare Part A can be retroactive for up to six months (but not earlier than the month they turned 65).
Since you cannot contribute to an HSA for any month you are enrolled in Medicare, that retroactive Part A coverage could cause some of your HSA contributions to become excess contributions.
Example: If you’re 68, still working, covered by an HSA-qualified employer plan, and contributing to your HSA, you can generally continue those contributions while you delay Medicare. But when you’re ready to enroll in Medicare, you should generally stop HSA contributions at least six months before applying.
Also remember that employer HSA contributions count toward the contribution limit too.
So the simple rule of thumb is: If you’re over 65, still contributing to an HSA, and getting ready to enroll in Medicare, plan ahead and stop HSA contributions about six months before applying for Medicare or Social Security.
Answered by Cody Biggs on August 20, 2026
Broker Licensed in LA, AL, AZ & 24 other states
Answered by Danielle Jimison on August 20, 2026
Broker Licensed in OH & PA
Answered by Marcia West on August 18, 2026
Agent Licensed in WA, FL, GA, MI, TX & VA
Answered by Voss Speros on August 18, 2026
Broker Licensed in AZ, CA, CO & 20 other states
Tags: Coverage Eligibility
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