What happens if I have Medicare and contribute to an HSA?


Editorial team Published on

⚠️ Tax Penalties for Excess Contributions

If you contribute to a Health Savings Account (HSA) while enrolled in any part of Medicare (Part A or Part B), your contributions are considered "excess contributions" and are subject to an IRS Excess Contributions Guide 6% excise tax each year until corrected.

📊 Consequences and Rules

  • ❌ No New Contributions: You lose eligibility to contribute pre-tax money to an HSA the exact month your Medicare coverage starts.
  • 🔄 Retroactive Traps: Signing up for Social Security after age 65 can backdate Medicare Part A for up to 6 months, making those retroactive months ineligible for HSA contributions.
  • 💵 Using Existing Funds: You can still keep and spend existing HSA funds tax-free for qualified medical expenses, including Medicare Part B and Part D premiums.

💡 How to Fix It

  • Withdraw Excess: Remove the unauthorized contributions and any earnings before your tax filing deadline to avoid the 6% penalty.
  • Stop Timing: Stop your and your employer's HSA contributions at least 6 months before you plan to apply for Medicare or Social Security past age 65.