How much you can contribute to an HSA each year

The amount you can put into an HSA depends on the type of health insurance coverage you have and whether you're covering yourself alone or your family. The IRS sets these limits and adjusts them annually for inflation. For 2024, the limits are $4,150 for individual coverage and $8,300 for family coverage. These numbers change each year, so you'll want to check the current limit before you contribute.

Your HSA provider will know the current year's limit and can tell you how much room you have left in your account. If you're self-employed or your employer offers an HSA, your employer's payroll system usually tracks this automatically. The key is that you can only contribute up to the limit for the coverage type you actually have — you can't contribute the family limit if you only have individual coverage, even if you're supporting a family.

Key Takeaways

  • The IRS sets annual HSA contribution limits that vary by coverage type, and these limits increase most years to account for inflation.
  • Individual coverage has a lower limit than family coverage, and you must match your contribution limit to the coverage you actually have.
  • If you enroll in an HSA mid-year, you can still contribute the full annual limit for that year, but you must maintain HSA-may be able to access coverage through December 31.
  • Contributions made after the tax year ends can count toward the previous year if you file them by the tax filing deadline, including extensions.
  • Exceeding the contribution limit triggers a tax penalty, so tracking your contributions across all sources — employer, employee, and catch-up — matters.

Individual coverage versus family coverage limits

If your health plan covers only you, you fall under the individual coverage limit. This is the lower of the two annual limits. If your plan covers you and at least one other person — whether a spouse, child, or dependent — you're in the family coverage category and get the higher limit.

The distinction matters because the IRS doesn't let you split the difference. You contribute to one limit or the other based on your actual coverage on December 1 of the year you're contributing for. If you switch from individual to family coverage mid-year, you can contribute the family limit for that entire year as long as you had family coverage on December 1. The reverse is also true: if you drop from family to individual coverage, you're locked into the individual limit for that year.

What happens if you contribute too much

Contributing more than the annual limit triggers a penalty. The excess amount is taxed at your ordinary income tax rate, and you also owe a 6% excise tax on the overage. This penalty applies each year the excess sits in your account, so it compounds if you don't catch and fix it.

If you realize you've over-contributed, you can withdraw the excess and the earnings on that excess before your tax filing deadline (including extensions). Withdrawing the excess removes the 6% penalty, though you'll still owe income tax on any earnings that came from the overage. Your HSA provider can help you calculate what needs to come out and can process the withdrawal for you.

Employer contributions and catch-up contributions

The annual limit includes all contributions from all sources. If your employer puts $2,000 into your HSA and you contribute $2,000 yourself, you've used $4,000 of your individual limit. You can't contribute an additional $4,150 on top of what your employer added — the $4,150 is the total for the year.

If you're 55 or older, you can make an additional catch-up contribution of $1,000 per year on top of the standard limit. This is separate from the regular limit and doesn't count against it. So a 55-year-old with individual coverage could contribute up to $5,150 total ($4,150 base plus $1,000 catch-up). This catch-up option continues until you enroll in Medicare, at which point you can no longer contribute to an HSA.

Mid-year enrollment and the December 1 rule

If you enroll in an HSA-may be able to access plan partway through the year, you can still contribute the full annual limit for that year — but only if you maintain HSA-may be able to access coverage through December 31. This is called the last-month rule. If you enroll in October, for example, you can contribute the full year's limit as long as you stay in an HSA-may be able to access plan through the end of December.

The catch is that if you drop HSA-may be able to access coverage before December 31, you have to withdraw the excess contributions and pay the 6% penalty on anything you contributed for months you weren't covered. So if you enroll in October and contribute the full-year amount but then switch to a non-HSA plan in November, you'd owe the penalty on three months' worth of contributions.

Contributions after the tax year ends

You can make contributions for a tax year up until the filing deadline for that year, usually April 15 (or later if you file an extension). This means you can contribute for 2024 as late as April 15, 2025. Your HSA provider will ask you to specify which tax year the contribution is for, so make sure you're clear about that when you send the money in.

This deadline matters if you want to catch up on contributions you missed during the year. If you had room in your 2024 limit and didn't use it, you can still fund that gap in early 2025 as long as you do it before the filing deadline. After that date, any contribution goes toward the current year's limit instead.

Tracking contributions across employers

If you change jobs during the year, you might have HSA contributions from two different employers. Both count toward your annual limit. Your new employer's HSA might not know about contributions your old employer made, so you need to track the total yourself or ask both employers for documentation.

When you file your taxes, you'll report your total HSA contributions on Form 8889. If you've over-contributed across multiple employers, you'll catch it then, but it's better to know before the year ends so you can adjust. Ask your HSA provider for a year-to-date statement showing all contributions from all sources, and keep records from both employers.

Frequently Asked Questions

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

No. Once you enroll in Medicare, you can no longer make contributions to an HSA, even if you keep the account open. You can still withdraw money from the account for may have access to medical expenses without penalty, and the money can be used for Medicare premiums and out-of-pocket costs. If you haven't reached 65 yet and are considering Medicare early due to disability, talk to your HSA provider about the timing.

What if my employer contributes more than the limit?

Your employer is responsible for staying within the limit. If they over-contribute, the excess is taxable income to you, and you owe the 6% excise tax on it. You should report this to your employer's benefits department so they can correct it. Ask for a corrected Form W-2 if the over-contribution was included in your wages.

Do HSA contributions reduce my taxable income?

Yes, if you contribute through payroll deductions (pre-tax), those contributions lower your taxable income for the year. If you contribute directly to the HSA after taxes, you can deduct the contribution on your tax return using Form 8889. Either way, the contribution itself is not taxed, though the earnings on the money are taxed if you withdraw them for non-medical expenses.

Can I contribute to an HSA and a Dependent Care FSA in the same year?

Yes. HSA and Dependent Care FSA limits are separate, so you can max out both. However, you cannot use HSA money to pay for dependent care expenses — that's what the Dependent Care FSA is for. Keep the accounts separate and use each one for its intended purpose.

What if I had family coverage for part of the year and individual coverage for the rest?

Your coverage type on December 1 determines your limit for the entire year. If you had family coverage on December 1, you can contribute the family limit even if you switched to individual coverage later. If you had individual coverage on December 1, you're stuck with the individual limit for the year, even if you switched to family coverage in December.