Health Savings Accounts (HSAs) are a popular tool for managing health care costs, but the rules can get tricky when Medicare comes into play. Here are answers to three common questions about how HSAs interact with Medicare enrollment.
1. Can I Contribute to My HSA After Enrolling in Medicare?
Short Answer: No, but your spouse may still be eligible to contribute.
Once you enroll in Medicare, you are no longer eligible to contribute to your HSA. However, your spouse (or young adult children) covered by your family health plan may contribute up to the family limit in their own HSA.
Example: Kevin, age 65, enrolls in Medicare while continuing to work and covering his spouse, Winnie (age 62), under a family health plan. Kevin can contribute a prorated amount to his HSA for the year of his enrollment, but Winnie can contribute the remaining family limit to her own HSA. She can continue to make family-level contributions until she enrolls in Medicare.
Key Takeaway: The type of health plan (family or individual coverage) determines the contribution limits, not who holds the plan.
2. Can I Contribute to My HSA if My Spouse Enrolls in Medicare?
Short Answer: Yes, as long as you remain eligible for an HSA.
If you continue working and maintain a qualifying health plan, you can keep contributing to your HSA even if your spouse enrolls in Medicare. The contribution limit depends on whether you maintain family or individual coverage:
- Family coverage: $8,550 for 2025 (plus $1,000 if 55+).
- Individual coverage: $4,300 for 2025 (plus $1,000 if 55+).
Example: If you switch from family to individual coverage midyear, your HSA contribution limit will be prorated based on the months you had each type of coverage.
3. What If I Accidentally Contribute After My HSA Eligibility Ends?
If you contribute to an HSA after becoming ineligible (e.g., due to Medicare enrollment), you can withdraw the excess contributions by the tax filing deadline (including extensions) to avoid a 6% excise tax.
Example: Bob, age 68, discovers that Medicare’s six-month lookback rule made him ineligible for HSA contributions starting in May 2025. He contributed too much to his HSA but can avoid penalties by withdrawing the excess amount and any associated earnings before filing his 2025 taxes.
Important: If you’ve already spent the funds on qualified medical expenses, they count as withdrawn, but you may need to provide documentation to your HSA provider.
Other Key Points:
- The rules for HSA eligibility apply only to the account holder. Other family members covered by the plan may still qualify to open and fund their own HSAs.
- Adult children on a parent’s high-deductible health plan (HDHP) can contribute to their own HSA if they meet eligibility requirements and are not claimed as dependents.
Why This Matters
HSAs are a powerful way to save for medical expenses, but navigating Medicare and HSA rules requires careful planning. By understanding the eligibility rules, individuals can maximize their tax savings and avoid penalties.
To learn more, read Answering common questions about HSAs and Medicare enrollment.