No, they are not the same, though the names sound identical
A Medical Savings Account (MSA) and a Health Savings Account (HSA) are two separate accounts with different rules, different tax treatment, and different may be able to access requirements. The confusion is understandable—both let you set aside pre-tax money for medical expenses—but they work through different insurance structures and have different contribution limits and withdrawal rules.
The key difference: an HSA pairs with a high-deductible health plan (HDHP) and has no age limit or employment requirement. An MSA is older, rarer, and comes in two forms—Archer MSAs (which require self-employment income) and Medicare MSAs (which are only for people on Medicare). Most people who think they have an MSA actually have an HSA.
Key Takeaways
- HSAs work with high-deductible health plans and are available to anyone with that type of coverage, while MSAs are limited to self-employed people (Archer MSA) or Medicare beneficiaries (Medicare MSA).
- HSA contribution limits are higher than MSA limits, and HSAs have no age restrictions, while Archer MSAs phase out for people over 55 and Medicare MSAs have strict enrollment windows.
- Both accounts let you save pre-tax money for medical expenses, but HSAs are far more common because they don't require self-employment income or Medicare enrollment.
- Money in an HSA rolls over year to year with no "use it or lose it" important date, while Archer MSA rules are stricter about what happens to unused funds.
How HSAs and MSAs handle money differently
Both accounts let you contribute pre-tax dollars and withdraw them tax-free for may have access to medical expenses. That part is the same. But the structure around that core feature is different.
With an HSA, you own the account outright. Money you don't spend in a given year stays in the account forever—there is no important date to use it. You can let it grow and invest it like a retirement account. When you turn 65, you can withdraw money for any reason (though non-medical withdrawals are taxed as income).
With an Archer MSA, the rules are tighter. Unused money can be rolled over, but there are restrictions on how much you can carry forward, and the account has a sunset date—no new Archer MSAs have been allowed since 2007. Medicare MSAs work differently still: they are tied to a specific Medicare Advantage plan, and the money in them follows Medicare's rules about what counts as a may have access to expense.
Who can open each type of account
HSA may be able to access is straightforward: you must be covered by a high-deductible health plan, have no other health coverage (with narrow exceptions), and not be claimed as a dependent on someone else's tax return. You can be employed, self-employed, or unemployed. There is no age limit.
Archer MSA may be able to access is much narrower. You must be self-employed or a partner in a business with 50 or fewer employees. You cannot have other health coverage. The account was designed for small business owners and self-employed people, and it has been closed to new enrollees since 2007—only people who opened one before that date can still contribute to it.
Medicare MSAs are only for people enrolled in Original Medicare (not Medicare Advantage). You enroll during the Medicare open enrollment period, and the account is managed by your Medicare Advantage plan, not by you independently.
Contribution limits and what you can withdraw
| Account Type | Who Can Open | Annual Contribution Limit (2024) | Unused Money |
|---|---|---|---|
| HSA (individual coverage) | Anyone with an HDHP | $4,150 | Rolls over indefinitely; no important date |
| HSA (family coverage) | Anyone with an HDHP | $8,300 | Rolls over indefinitely; no important date |
| Archer MSA | Self-employed or small business (closed to new enrollees since 2007) | Varies by income; typically $3,850–$7,750 | Limited rollover; account has restrictions |
| Medicare MSA | Medicare beneficiaries only | Set by your plan; typically $2,500–$3,000 | Follows Medicare rules; plan-dependent |
HSA contribution limits are set by the IRS each year and are higher than MSA limits. For 2024, individual HSA coverage is $4,150 and family coverage is $8,300. If you are 55 or older, you can contribute an additional $1,000 per year as a catch-up contribution.
Archer MSA limits are lower and are based on your income and the type of health plan you have. Because no new Archer MSAs have been opened since 2007, this is mainly relevant if you already have one.
What counts as a may have access to medical expense
Both HSAs and MSAs cover similar categories of medical expenses: doctor visits, prescriptions, dental work, vision care, mental health treatment, and medical equipment. You can also use the money for long-term care insurance premiums and certain over-the-counter medications.
The difference is in the details. HSAs have a clear, published list of may have access to expenses maintained by the IRS. Archer MSAs follow similar rules but with some variations depending on your plan. Medicare MSAs follow Medicare's definition of covered services, which is narrower than the HSA list because it is tied to what Medicare itself covers.
In all three cases, you cannot use the money for cosmetic procedures, gym memberships, or general wellness products unless they are prescribed for a specific medical condition.
Tax treatment and what happens at withdrawal
Both HSAs and MSAs let you deduct contributions from your taxable income. If you are self-employed, you deduct HSA contributions on Schedule C. If you are employed, your employer usually deducts them from your paycheck before taxes are calculated.
When you withdraw money for a may have access to medical expense, there is no tax and no penalty. When you withdraw money for a non-may have access to expense before age 65, you pay income tax on the withdrawal plus a 20 percent penalty (this is the same for both HSAs and MSAs). After age 65, HSA withdrawals for non-medical expenses are taxed as income but not penalized. Archer MSA rules are stricter: non-may have access to withdrawals are taxed and penalized at any age.
Why HSAs are far more common than MSAs
HSAs have become the dominant account type because they are easier to open and have higher contribution limits. You do not need to be self-employed or on Medicare—you just need a high-deductible health plan, which millions of people have through their employer or the individual market.
Archer MSAs are rarely opened anymore because the account type was closed to new enrollees in 2007. The only people who have them are those who opened one before that date and have kept it active. Medicare MSAs exist but are not widely used because Medicare Advantage plans offer other ways to save on medical expenses.
If you are shopping for a medical savings account and you have a choice, an HSA is almost certainly the better option: higher limits, more flexibility, and no employment restrictions.
Frequently Asked Questions
Can I have both an HSA and an MSA at the same time?
No. If you have an HSA, you cannot have an Archer MSA. If you are on Medicare with an MSA, you cannot have an HSA. The IRS treats them as mutually exclusive because they are designed for different insurance situations.
What happens to my MSA if I stop being self-employed?
If you have an Archer MSA and you lose self-employment income, you can no longer contribute to the account, but you can keep it open and continue to withdraw money for may have access to medical expenses. The account does not close; you just cannot add new money to it.
Can I roll an Archer MSA into an HSA?
Yes, you can roll an Archer MSA balance into an HSA if you become covered by a high-deductible health plan and meet HSA may be able to access rules. This is one way people transition from an MSA to an HSA. You will need to coordinate the timing with your HSA provider to avoid tax issues.
Is a Medicare MSA the same as a regular HSA?
No. A Medicare MSA is only for people on Original Medicare and is managed by a Medicare Advantage plan. An HSA is for people under 65 with a high-deductible health plan. They are separate programs with different rules and different expense categories.
Do I lose my HSA money if I don't use it by the end of the year?
No. HSA money rolls over indefinitely. There is no "use it or lose it" important date. This is one major advantage of HSAs over some other medical savings programs. You can let the money grow year after year.