
How Having an HSA Impacts Signing Up for Medicare
A Health Savings Account (HSA) can be a powerful tool for managing healthcare costs.
However, once you’re eligible for Medicare, special rules apply that could impact your ability to contribute and avoid penalties.
What Is an HSA?
A Health Savings Account (HSA) lets you:
- Save pre-tax dollars for medical expenses
- Reduce your taxable income
- Grow funds tax-free
- Spend tax-free on qualified healthcare costs
✅ HSAs are available to people enrolled in a high-deductible health plan (HDHP).

Can You Contribute to an HSA Once Enrolled in Medicare?
🚫 No.
Once you enroll in any part of Medicare — whether Part A, Part B, Part C, or Part D — you are no longer eligible to contribute to an HSA.
However:
- You can still use your existing HSA funds to pay for qualified medical expenses, including Medicare premiums, deductibles, copays, and coinsurance.
- You just can’t make new contributions to the account.
Timing Is Critical: When to Stop HSA Contributions
Because Medicare Part A enrollment is often retroactive up to six months, you need to stop contributing to your HSA six months before you apply for Medicare to avoid IRS penalties.
Example:
If you plan to enroll in Medicare at age 65 in July 2025, you should stop making HSA contributions by January 2025.
⏰ Explore your Medicare Enrollment Deadlines to help avoid surprises!

Using HSA Funds After Starting Medicare
You can still use your HSA funds tax-free to pay for:
- Medicare Part B, Part C, and Part D premiums
- Medicare Part A premiums (if you owe one)
- Dental, vision, and hearing services
- Copayments, coinsurance, and deductibles
- Long-term care insurance premiums (limits apply)
Note: You cannot use HSA funds to pay for Medigap (Medicare Supplement) premiums.
How to Plan Ahead if You Have an HSA
If you’re approaching age 65 and have an HSA, here’s what to do:
- Decide if you want to delay Medicare Part A and/or Part B if you have credible employer coverage.
- Stop contributions at least six months before you enroll in Medicare.
- Continue using your HSA to pay for eligible expenses once enrolled.
📚 Thinking about delaying Medicare? Read our guide on Medicare and Employer Coverage.
Common Mistakes to Avoid
❌ Continuing HSA contributions after enrolling in Medicare leads to tax penalties.
❌ Forgetting that Part A may enroll you retroactively — plan ahead!
❌ Not using HSA funds to their fullest — missing out on tax-free payments for qualified healthcare expenses.
Ready for Your Next Steps?
Whether you’re retiring, staying employed, or just planning ahead, understanding how your HSA fits into your Medicare strategy is crucial.
We can help you navigate your options, avoid penalties, and make the most of your savings.
👉 Schedule Your No Cost, No Obligation Medicare Plan Consultation Today!