No, they are not the same, but the difference is narrower than you might think

A medical savings account (MSA) and a health savings account (HSA) are both tax-advantaged accounts that let you set aside pre-tax money for medical expenses. But they are not interchangeable. An HSA is one specific type of medical savings account—the most common one today. There are other medical savings accounts that work differently, have different rules, and pair with different insurance plans. If someone tells you they have an MSA, you cannot assume it is an HSA without asking which one.

The confusion exists because "medical savings account" is the umbrella term, and HSA is the most popular account under that umbrella. It is like saying "vehicle"—a truck is a vehicle, but not all vehicles are trucks. Understanding which type you have or are considering matters because the contribution limits, the insurance plan requirements, and the tax treatment can all differ.

Key Takeaways

  • HSA is one type of medical savings account, but MSA is the broader category that includes other account types with different rules.
  • An HSA requires a high-deductible health plan (HDHP), while other MSAs like Archer MSAs and Health Reimbursement Arrangements (HRAs) pair with different insurance structures.
  • HSAs allow you to carry unused money forward indefinitely, but some other MSAs have "use it or lose it" rules or annual limits on carryover.
  • Contribution limits and tax treatment vary by account type, so the tax savings you get from one MSA may not apply to another.

The three main types of medical savings accounts

The term "medical savings account" covers at least three distinct products. The Health Savings Account (HSA) is the newest and most widely available. It launched in 2004 and requires you to be enrolled in a high-deductible health plan (HDHP). You contribute pre-tax money, the account grows tax-free, and withdrawals for may have access to medical expenses are tax-free. There is no annual limit on how much you can carry forward—unused money stays in the account indefinitely.

The Archer Medical Savings Account is older and much less common now. It was created in 1996 and requires enrollment in a high-deductible health plan, similar to an HSA. However, Archer MSAs have stricter contribution limits, and they are only available to self-employed people and employees of small businesses (50 or fewer employees). New Archer MSAs have not been issued since 2007, though existing accounts can still be used and funded.

The Health Reimbursement Arrangement (HRA) is employer-funded only—you do not contribute your own money. Your employer sets aside funds in an account and reimburses you for may have access to medical expenses. HRAs are not portable; if you leave the job, the account typically stays with the employer. Some HRAs have "use it or lose it" rules where unused money at the end of the year is forfeited, though employers can now allow up to $610 (as of 2024) to roll over to the next year.

How HSA and Archer MSA requirements differ

Both HSAs and Archer MSAs require you to be enrolled in a high-deductible health plan, but the definition of "high-deductible" differs slightly between them. For 2024, an HDHP for HSA purposes has a minimum deductible of $1,600 for individual coverage or $3,200 for family coverage. An Archer MSA uses the same deductible thresholds, but Archer MSAs are closed to new enrollees and are rarely encountered in practice.

The real difference is who can open one. An HSA is available to anyone enrolled in an HDHP—employee, self-employed, or unemployed. An Archer MSA is only available to self-employed people and employees of businesses with 50 or fewer employees. If you work for a large employer, you cannot open an Archer MSA even if you wanted to. This restriction is why Archer MSAs have largely disappeared from the market.

HRAs have no deductible requirement at all. Your employer can offer an HRA alongside any health insurance plan, including a traditional PPO or HMO. The trade-off is that you have no control over the account—your employer decides how much to contribute and what expenses may have access to for reimbursement.

Contribution limits and carryover rules

HSA contribution limits are set annually and are tied to the cost of HDHP coverage. For 2024, you can contribute up to $4,150 for individual coverage or $8,300 for family coverage. If you are 55 or older, you can add an extra $1,000 per year as a catch-up contribution. Unused money rolls forward indefinitely—there is no deadline to spend it or lose it.

Archer MSA contribution limits are lower and are calculated as a percentage of your deductible. The maximum is typically 75% of the deductible for individual coverage or 65% for family coverage. Like HSAs, unused money carries forward, but because Archer MSAs are closed to new enrollees, this is rarely relevant anymore.

HRA carryover rules are set by the employer. Until recently, unused HRA funds were forfeited at the end of the year under the "use it or lose it" rule. The IRS now allows employers to permit up to $610 (indexed annually) to roll over to the next year, but the employer makes that choice. If your employer does not allow carryover and you do not spend the money, you lose it.

Tax treatment and withdrawal rules

HSAs and Archer MSAs have identical tax treatment: contributions are tax-deductible (or made with pre-tax payroll deductions), the account grows tax-free, and withdrawals for may have access to medical expenses are tax-free. If you withdraw money for a non-medical expense before age 65, you pay income tax plus a 20% penalty. After age 65, you can withdraw for any reason without the penalty, though non-medical withdrawals are still taxable income.

HRAs are funded entirely by the employer, so there is no personal contribution to deduct. Reimbursements for may have access to medical expenses are tax-free to you. You cannot withdraw HRA funds for personal use—the money stays in the account and is only paid out as reimbursement for may be able to access expenses. If you leave the job, you typically lose access to the account.

The definition of "may have access to medical expense" is the same across all three account types and is set by the IRS. It includes deductibles, copays, coinsurance, prescriptions, dental work, vision care, and many other costs. It does not include health insurance premiums (with limited exceptions), over-the-counter medications without a prescription, or cosmetic procedures.

Which account type you are likely to encounter

If you have a medical savings account through your employer, it is almost certainly an HSA. HSAs are the dominant product in the market because they are available to anyone with an HDHP, they have no employer-size restrictions, and they are portable—you keep the account and the money if you change jobs. Archer MSAs are relics; they exist only in accounts opened before 2007, and the number shrinks each year as people close them or move to HSAs.

HRAs are common in large employers but are always employer-controlled. You cannot open one yourself, and you cannot take it with you when you leave. If your employer offers an HRA, you will know it because they will tell you about it during benefits enrollment.

If you are self-employed or shopping for your own coverage, you will be looking at HSAs. They are the only medical savings account available to you, and they pair with the high-deductible health plans sold on the individual market.

What happens if you have both an HSA and another MSA

You cannot have an HSA and an Archer MSA at the same time. The IRS treats them as mutually exclusive—if you are enrolled in an HDHP and want an HSA, you cannot also fund an Archer MSA. However, you can have an HSA and an HRA simultaneously. Many employers offer both: the HRA covers some expenses, and the HSA lets you save additional pre-tax money for medical costs. The two accounts work together, not against each other.

If you switch from an Archer MSA to an HSA, you can keep the Archer MSA open and let it sit, but you cannot make new contributions to it. You would contribute to the HSA going forward. The old Archer MSA money remains available for may have access to medical expenses indefinitely.

Frequently Asked Questions

Can I move money from an Archer MSA to an HSA?

You cannot directly transfer an Archer MSA to an HSA, but you can withdraw the money from the Archer MSA and deposit it into an HSA within 60 days. This counts as a rollover and is not taxed. After that, the Archer MSA can remain open but cannot receive new contributions.

If my employer offers an HRA, do I still need an HSA?

Not necessarily. An HRA covers may have access to medical expenses, so it may be enough depending on how much your employer funds it. However, if the HRA does not cover all your medical costs, an HSA lets you save additional pre-tax money. You can have both at the same time if you are enrolled in an HDHP.

What happens to my Archer MSA if I change jobs?

Your Archer MSA stays with you—it is your account, not your employer's. You keep the money and can continue to use it for may have access to medical expenses. You can no longer make contributions to it unless you remain self-employed or move to another small employer, but the existing balance is yours indefinitely.

Can I use HSA money to pay my health insurance premium?

Generally no, but there are exceptions. You cannot use HSA funds to pay premiums for your current health insurance. You can use HSA money to pay premiums for COBRA coverage, long-term care insurance, or health insurance while you are receiving unemployment benefits. Retirees can also use HSA funds to pay Medicare premiums.

Is an HRA considered part of my taxable income?

No. Reimbursements from an HRA for may have access to medical expenses are not taxable income to you. The employer funds the account, and the money paid out for may be able to access expenses is tax-free. You only pay tax on HRA money if you withdraw it for non-medical purposes, which most HRAs do not allow.