Health Spending Account (HSA) Drawdown Calculator

The rules governing HSA withdrawals change significantly once you turn 65. Understanding this distinction is the key to using your account effectively. Before age 65, using funds for non-medical expenses triggers both income tax and a steep 20% penalty. After 65, that penalty disappears, opening up new strategic possibilities.

Here is a breakdown of how HSA withdrawals are treated for retirees.

This dual nature makes the HSA an incredibly versatile account. It’s your first and best line of defense against rising healthcare costs in retirement, but it also serves as a valuable backup for general income needs.

Once you reach age 65, your HSA can be used for any expense without a penalty. This transforms the account into what many financial planners call a "Stealth IRA." If you withdraw funds for non-medical purposes—like travel, home repairs, or dining out—the distribution is simply taxed as ordinary income, exactly like a withdrawal from a Traditional 401(k) or IRA.

While using your HSA for medical expenses is always the most tax-efficient option (as those withdrawals are completely tax-free), the Stealth IRA strategy provides a powerful layer of flexibility.

When does this strategy make sense?

• You have a very large HSA balance: If your HSA has grown substantially and is more than you anticipate needing for medical care, the overflow can be used for general spending.
• You have other dedicated healthcare funds: If you have a generous employer retiree health benefit or long-term care insurance, you might not need to rely as heavily on your HSA for medical costs.
• You need to bridge an income gap: The HSA can provide a supplemental income stream if your other retirement accounts are running low or if you want to delay taking Social Security.

The key is to view this as a secondary benefit. The primary goal of an HSA should always be to cover medical costs in the most tax-advantaged way possible. However, knowing you have a penalty-free backup for other expenses provides significant peace of mind. You can model different scenarios with a comprehensive retirement withdrawal calculator to see how HSA funds can fit into your overall plan.

To make tax-free withdrawals from your HSA at any age, the money must be used for "qualified medical expenses" as defined by the IRS. The list is extensive and covers most of the healthcare services a retiree will need. Planning your withdrawals around these categories maximizes the tax-free power of your account.

Here are some of the most common qualified expenses for retirees:

• Medicare & Insurance Premiums
  • Medicare Part B (Medical Insurance) premiums
  • Medicare Part D (Prescription Drug) premiums
  • Medicare Advantage (Part C) plan premiums
  • Note: Premiums for Medicare Supplement (Medigap) policies are generally not considered qualified expenses.
• Doctor Visits & Hospital Care
  • Deductibles for all parts of Medicare
  • Copayments and coinsurance for doctor visits, specialist care, and hospital stays
  • Diagnostic services like lab work, X-rays, and MRIs
• Dental, Vision, and Hearing
  • Exams, cleanings, fillings, and dentures
  • Eye exams, glasses, contact lenses, and corrective eye surgery
  • Hearing aids and batteries
• Long-Term Care
  • Premiums for tax-qualified long-term care insurance (up to annual, age-based limits)
  • Costs for in-home care, assisted living, or nursing home services if they are primarily for medical care.
• Prescription & Over-the-Counter Items
  • Prescription medications
  • Insulin and diabetic testing supplies
  • Over-the-counter medicines and health products like pain relievers, cold medicine, and bandages.

Keeping good records of these expenses is crucial. Unlike a Flexible Spending Account (FSA), you can reimburse yourself from your HSA for a qualified medical expense incurred in any prior year, as long as the HSA was established before the expense occurred.

The calculator projects the longevity of your HSA funds by running a year-by-year simulation. It accounts for your planned withdrawals, adjusts them for inflation, and applies investment growth to the remaining balance. Here are the core formulas it uses.

The calculator first determines your total planned withdrawal for the first year of retirement:

Initial Annual Withdrawal = Annual Medical Expenses + Supplemental Annual Withdrawal

Where:

• Annual Medical Expenses = The amount you plan to withdraw tax-free for qualified medical costs in the first year.
• Supplemental Annual Withdrawal = The additional amount you plan to withdraw for non-medical needs, which is taxable after age 65.

Each subsequent year, the calculator projects your HSA balance by subtracting the inflation-adjusted withdrawal and then applying investment growth:

End-of-Year Balance = (Start-of-Year Balance - This Year's Withdrawal) × (1 + Annual Investment Return)

Where:

• Start-of-Year Balance = The HSA balance at the beginning of the year.
• This Year's Withdrawal = The initial withdrawal amount, increased by the inflation rate for each year that has passed.
• Annual Investment Return = Your expected average annual return on HSA investments.

Finally, the HSA Longevity Score is calculated by comparing how long the funds are projected to last against your planned retirement timeline:

HSA Longevity Score = (Years Funds Lasted / Years Needed) × 100

Where:

• Years Funds Lasted = The total number of years from your current age until the projected balance reaches zero.
• Years Needed = The number of years from your current age to your life expectancy.

Your HSA doesn't exist in a vacuum. To maximize its benefits, integrate it thoughtfully into your overall retirement income plan. The order in which you tap your various accounts—a concept known as withdrawal sequencing—can have a major impact on your taxes and how long your money lasts.

A common and tax-efficient withdrawal hierarchy is:

1. Taxable Brokerage Accounts: Spend from these accounts first. While you'll pay capital gains taxes, this allows your tax-advantaged accounts to continue growing.
2. Tax-Deferred Accounts (Traditional 401(k), 403(b), IRA): Next, draw from these accounts. Withdrawals are taxed as ordinary income. This is also the bucket from which you'll take Required Minimum Distributions (RMDs) starting at age 73.
3. Tax-Free Accounts (Roth IRA, Roth 401(k)): Save these for last. Withdrawals are tax-free, and they have no RMDs for the original owner, making them excellent legacy assets.

Where does the HSA fit? For medical expenses, the HSA should be your very first source of funds. Because withdrawals are tax-free for qualified expenses, using your HSA allows all your other accounts—even your Roth IRA—to continue growing untouched.

Furthermore, HSA withdrawals for medical expenses do not count toward your Adjusted Gross Income (AGI). This is a critical benefit because a lower AGI can help you avoid or reduce Medicare's high-income surcharges, known as IRMAA. A strategic HSA drawdown can directly lower your Medicare Part B premiums. For a deeper dive, explore tax-efficient withdrawal strategies. This approach aligns with principles for establishing a safe withdrawal rate by minimizing your tax drag each year.

What is an HSA drawdown strategy?

An HSA drawdown strategy is a plan for how and when you will withdraw funds from your Health Savings Account during retirement to pay for healthcare and other expenses. A good strategy aims to maximize the tax-free benefits of the account while ensuring the funds last as long as they are needed.

Can I use my HSA to pay for Medicare premiums?

Yes, after you turn 65, you can use your HSA funds tax-free to pay for Medicare Part B, Part D, and Medicare Advantage plan premiums. However, you cannot use HSA funds to pay for Medigap (Medicare Supplement) premiums.

Is it better to pay medical expenses out-of-pocket or from my HSA in retirement?

If you can afford to, paying for medical expenses out-of-pocket and letting your HSA continue to grow tax-free is a powerful strategy. You can keep your receipts and reimburse yourself from the HSA years later, effectively allowing the funds to act as a tax-free emergency fund or legacy asset.

What happens to my HSA when I die?

If you name your spouse as the beneficiary, the HSA transfers to them and retains its tax-advantaged status. If you name a non-spouse beneficiary, the account is closed, and the fair market value becomes taxable income to the beneficiary in the year of your death.

Are HSA withdrawals counted as income for Social Security purposes?

No, tax-free withdrawals from an HSA for qualified medical expenses are not considered income when calculating whether your Social Security benefits are taxable. This is another key advantage that helps reduce your overall tax burden in retirement.

Is there a Required Minimum Distribution (RMD) for an HSA?

No, unlike 401(k)s and Traditional IRAs, HSAs do not have Required Minimum Distributions. You are never forced to take money out, allowing the funds to grow tax-free indefinitely if you don't need them. Learn more about RMD strategies.

Can I still contribute to my HSA after I retire?

You can contribute to an HSA as long as you are covered by an HSA-eligible High Deductible Health Plan (HDHP) and are not enrolled in any part of Medicare. Once you enroll in Medicare (even just Part A), you can no longer make new contributions to your HSA. You can use a HSA contribution calculator to see how much you can save before then.

Modeling your HSA drawdown is a critical first step. Now, put that information into the broader context of your retirement plan.

1. Estimate Your Total Costs: Use the retirement healthcare cost calculator to get a comprehensive view of your potential medical, dental, and long-term care expenses.
2. Project Your Growth: See how different investment strategies could impact your future balance with the HSA investment growth calculator.
3. Test Your Overall Plan: Input your planned HSA withdrawals into a master how long will my money last calculator to see how it affects the longevity of your entire retirement portfolio.

Last updated: July 2026