The amount you contribute depends on your plan type, your income, and whether you have dependents

The IRS sets an annual limit on how much you can contribute to a Health Savings Account. For 2024, the limit is $4,150 if you have individual coverage, or $8,300 if you have family coverage. These limits change each year, and your employer may contribute part of that amount on your behalf — money that still counts toward your limit.

You don't have to contribute the maximum. Many people contribute less based on what they expect to spend on medical care, what they can afford to set aside, or how much they want to save for future healthcare costs. The key is understanding what you can afford to put in without straining your budget, and whether your employer offers matching contributions that you should take advantage of.

Key Takeaways

  • The IRS limit for 2024 is $4,150 for individual coverage or $8,300 for family coverage, and these limits increase slightly most years.
  • Your employer's contributions count toward your limit, so if they put in $1,500, you can only add $2,650 more as an individual.
  • You can contribute less than the maximum based on your expected medical expenses and what you can afford to save.
  • Contributions made before April 15 of the following year can be counted toward the previous year's limit if you set up a special arrangement with your employer.

How the annual contribution limit works

The contribution limit is a combined total from all sources. If your employer contributes $2,000 to your HSA, you can contribute up to $2,150 more as an individual (assuming individual coverage in 2024). You cannot exceed the total limit by contributing on your own, even if your employer hasn't used their full contribution amount.

The limit applies to the calendar year. If you enroll in an HSA-may be able to access plan mid-year, you can still contribute the full annual amount for that year — you don't get a reduced limit. However, if you had an HSA-may be able to access plan for only part of the year, special rules apply, and you may owe taxes and penalties if you contributed more than you were allowed.

Deciding how much to contribute based on your situation

Start by looking at your expected medical expenses for the year. If you take regular medications, see specialists, or know you'll need dental or vision work, estimate those costs. Then consider whether you want to contribute enough to cover those expenses, or whether you want to contribute more and let the money grow for future years.

Many people contribute only what they'll spend in the current year, treating the HSA like a spending account. Others contribute the maximum and pay medical expenses out of pocket, letting the HSA balance grow as an investment for retirement healthcare costs. Both approaches are valid — it depends on your financial situation and how you think about healthcare savings.

If your employer offers matching contributions, prioritize contributing enough to capture that match. An employer match is immediate value and should generally come before other savings goals.

What happens if you contribute too much

If you contribute more than the IRS limit, the excess amount is taxable income, and you owe a 6% excise tax on the overage each year it remains in the account. This penalty stacks year after year until you withdraw the excess. You'll need to file Form 8889 with your tax return to report the overage and pay the tax.

If the overage happened because your employer made a mistake, ask them to correct it and issue you a refund before the tax deadline. If you made the mistake, you can withdraw the excess and any earnings on it before your tax filing deadline to avoid the penalty — though you'll still owe income tax on the earnings portion.

Catch-up contributions if you're 55 or older

If you're 55 or older, you can contribute an additional $1,000 per year on top of the standard limit. This is called a catch-up contribution. For 2024, that means you could contribute up to $5,150 for individual coverage or $9,300 for family coverage if you're 55 or older.

You can make catch-up contributions only in years when you're actually 55 or older during that calendar year. If you turn 55 in December, you can make the catch-up contribution for that year. Your employer doesn't have to allow catch-up contributions, so check with your benefits administrator to confirm they're available in your plan.

Timing your contributions throughout the year

You can contribute to your HSA at any point during the year, and most people do it through payroll deductions if their employer offers that option. Payroll deductions are convenient because the money comes out before taxes, reducing your taxable income for the year.

You can also make contributions directly to your HSA outside of payroll, up until the tax filing deadline of the following year (usually April 15). If you make a contribution after the calendar year ends but before April 15, you can designate it as a contribution for the previous year, as long as you didn't already max out that year. This is useful if you want to catch up on contributions you missed earlier.

How employer contributions affect your limit

When your employer contributes to your HSA, that money counts toward your annual limit just like your own contributions do. If your employer puts $3,000 into your account and you want to contribute the maximum, you can only add $1,150 more (for individual coverage in 2024).

Some employers offer a choice: they can contribute a set amount, or they can offer a higher deductible plan with a lower premium. In those cases, you're trading lower monthly costs for the ability to contribute more of your own money to the HSA. Run the numbers to see which option saves you more money overall, accounting for your expected medical expenses.

Frequently Asked Questions

Can I contribute to an HSA if I'm also on Medicare?

No. Once you enroll in Medicare, you're no longer may be able to access to contribute to an HSA, even if you keep your HSA-may be able to access health plan. You can still withdraw money from your existing HSA for medical expenses without penalty, but you cannot add new contributions.

What if I change jobs mid-year?

Your HSA stays with you — it's your account, not your employer's. Add up what you and your previous employer contributed before you switched jobs, then make sure your new employer doesn't contribute more than the remaining limit for that year. If they do, ask them to stop or reduce their contribution.

Can I contribute to an HSA and a Flexible Spending Account in the same year?

No. You cannot have both an HSA and an FSA (Flexible Spending Account) at the same time. If your employer offers both, you must choose one. A Limited-Purpose FSA for dental and vision only is an exception — you can have that alongside an HSA.

Do unused contributions roll over to the next year?

Yes. Unlike a Flexible Spending Account, HSA money doesn't expire. Any balance you don't spend carries forward to the next year, and the year after that. This is why some people contribute the maximum even if they don't expect to spend it all — the money can grow for future healthcare costs or retirement.

What if I don't use my HSA for medical expenses?

You can withdraw money for any reason, but non-medical withdrawals are taxable income and subject to a 20% penalty (unless you're 65 or older, in which case you only owe income tax). Once you turn 65, you can withdraw for any reason without the penalty, though you still owe income tax on non-medical withdrawals.