Using Your HSA in Retirement to Pay Medicare Expenses

Once you enroll in Medicare you can no longer contribute to your HSA — but every dollar already in the account remains available, tax-free, to pay Medicare Part B, Part D, and Medicare Advantage premiums, including every dollar of IRMAA surcharges. The catch: Medicare Supplement (Medigap) premiums are explicitly excluded under IRS Publication 969. If you chose Medigap, your HSA won't pay your monthly supplement premium. Understanding which costs qualify — and which don't — can mean thousands in annual tax savings on healthcare that would otherwise come from taxable income.

Which Medicare premiums qualify for HSA payment?

IRS Publication 969 permits tax-free HSA distributions for insurance premiums in only a few categories once you're past 65. Medicare falls into two distinct buckets — what qualifies and what doesn't.¹

Annual Medicare premiums payable from your HSA — by IRMAA tier

The amounts below reflect Part B (full premium including IRMAA) plus the Part D IRMAA surcharge for 2026. Your base Part D plan premium varies by plan — add it to the figures below. Both spouses pay independently on joint MAGI.²

Annual total = (Part B monthly + Part D IRMAA monthly) × 12. Part D base plan premium varies ($0–$100/mo) and also qualifies — add it to the figures above. For MFJ filers, thresholds double; both spouses pay their own premium.

Tax savings calculator

See how much you save by paying Medicare premiums from your HSA instead of from a taxable account.

Beyond Medicare: other qualified expenses that matter in retirement

Medicare covers less than most people expect. Your HSA covers the gaps Medicare doesn't.

• Dental care: Cleanings, fillings, crowns, implants. Medicare provides no routine dental coverage. A single implant runs $3,000–$6,000; implant-supported dentures can reach $30,000+.
• Hearing aids: $1,800–$7,000 per pair on average. Medicare doesn't cover them (unless through some Medicare Advantage plans). HSA covers the full cost.
• Vision: Prescription glasses, contacts, and eye exams. Not covered by Original Medicare (routine vision). HSA-eligible.
• Long-term care insurance premiums: Tax-qualified LTC insurance premiums are eligible up to age-based IRS limits. For 2026: ages 61–70, up to $4,960/person; age 71+, up to $6,200/person.³ A couple where both are 70 can draw up to $9,920/year from their HSAs for LTC premiums.
• Medicare cost-sharing: The Part B $283 annual deductible, Part A $1,736 hospital deductible (per benefit period), and any Part D costs before the $2,100 OOP cap are all HSA-eligible.
• Prescription drugs: Copays and costs for prescriptions, including drugs before the Part D OOP cap is reached.
• COBRA premiums: If you retire before 65 and bridge to Medicare via COBRA, those premiums are HSA-eligible for the account beneficiary while receiving COBRA continuation.

Age 65 and beyond: the "no-penalty withdrawal" feature

Before age 65, using HSA funds for non-qualified expenses triggers ordinary income tax plus a 20% excise penalty. After 65, the penalty disappears — non-qualified withdrawals are taxed at ordinary income rates only, exactly like a traditional IRA distribution. This makes the HSA a uniquely flexible account:

• Qualified medical use: 0% tax, ever.
• Non-medical use after 65: Ordinary income tax, no penalty — same as a traditional IRA.

The practical implication: every HSA dollar you accumulate is worth at least as much as a traditional IRA dollar (since the worst case after 65 is ordinary income tax), and worth far more when used for qualified medical expenses. Optimizing HSA withdrawals — prioritizing medical uses to preserve the 0%-tax advantage — is worth modeling explicitly.

The "receipt drawer" strategy: defer reimbursement to control timing

There is no time limit on reimbursing yourself from your HSA for qualified medical expenses you already paid out of pocket, as long as the expense was incurred after the HSA was established. You don't have to take the reimbursement in the same year as the expense.

This creates a compounding opportunity: pay medical bills from after-tax cash today, let the HSA grow tax-free for years, then reimburse yourself tax-free when you want liquidity — potentially in a year when other income is lower. Keep all receipts and documentation.⁴

For retirees approaching a high-income IRMAA year (e.g., a Roth conversion year, a business sale year), this strategy lets you push HSA withdrawals to a lower-income year. The reimbursement doesn't affect MAGI, so it doesn't directly reduce IRMAA — but it avoids selling taxable assets in that year, which could have triggered additional capital gains.

What HSA spending does NOT do for IRMAA

A common misconception: paying Medicare premiums from your HSA does not reduce your IRMAA tier. IRMAA is based on your MAGI (adjusted gross income plus tax-exempt interest) from two years prior. HSA distributions are excluded from gross income — they don't appear on your return at all — but they also don't reduce the income that was already counted.

What HSA spending can do indirectly: if your HSA covers dental, vision, and Medicare cost-sharing, you don't need to sell taxable assets to fund those expenses. Avoiding a stock or fund sale avoids capital gains, which would flow into MAGI and IRMAA. The HSA protects your MAGI from unnecessary growth — it just doesn't reduce existing income.

Planning for Medigap users: redirect the HSA to other gaps

If you chose Medigap Plan G or Plan N (a common choice for high-income retirees who want predictable costs), your monthly supplement premium doesn't qualify. With a Plan G covering most of Original Medicare's cost-sharing, your remaining HSA uses in retirement typically look like:

• Part B premium (and IRMAA) — still fully HSA-eligible
• Part D premium and IRMAA surcharge — fully HSA-eligible
• Dental, vision, hearing — Medicare doesn't cover; significant annual cost for most retirees
• LTC insurance premiums up to the age-based limit
• Part B $283 deductible (Plan G covers everything above it)
• Plan N office copays ($20) and ER copays ($50) if applicable

Even without being able to cover the Medigap premium itself, an HSA can absorb $4,000–$10,000+ per year in legitimate Medicare-adjacent expenses, tax-free.

What a specialist advisor models differently

Coordinating HSA spending with the rest of retirement income is genuinely complex. The specific decisions that benefit from specialist advice:

• When to spend the HSA vs. when to defer: If you're in a high-IRMAA year (Roth conversion, business sale, RMD spike), deferring HSA reimbursements can keep taxable income lower. In a low-income year, drawing down HSA for medical expenses preserves the other accounts for IRMAA-sensitive income.
• Investment strategy inside the HSA: An HSA with a 10–20 year investment horizon (if funded in your 40s–50s) can hold equities. A retiree spending it immediately should hold less.
• Sequence of withdrawals: HSA, Roth, traditional IRA, taxable — the order matters for lifetime IRMAA exposure and tax efficiency. This requires modeling your full income picture.
• LTC insurance coordination: If LTC premium deductibility applies, the optimal draw-down sequencing between HSA and itemized deductions changes depending on your income level.

Sources

1. IRS Publication 969 — Health Savings Accounts and Other Tax-Favored Health Plans. See "Insurance Premiums" section: Medicare Parts A, B, C, and D premiums qualify; Medicare supplement (Medigap) premiums do not. Values verified 2026.
2. CMS — 2026 Medicare Part B Premiums and Deductibles. Part B standard premium $202.90/month; IRMAA surcharge tiers $284.10–$689.90/month.
3. IRS Rev. Proc. 2025-19 / IRS Notice 2026-05 — 2026 eligible LTC insurance premium limits: $500 (≤40), $930 (41–50), $1,860 (51–60), $4,960 (61–70), $6,200 (71+). Source: AALTCI confirmed 3% increase from 2025 limits.
4. IRS Publication 969 — HSA Distributions: Distributions for qualified medical expenses incurred after the HSA was established are tax-free regardless of when the distribution is taken. No statutory time limit on reimbursement.

Premium values verified against CMS and SSA for tax year 2026. LTC premium limits reflect IRS-announced 2026 figures. IRMAA brackets based on 2024 MAGI (two-year look-back).