The annual contribution limit depends on your coverage type and changes each year
The IRS sets a maximum amount you can contribute to an HSA each year, and that limit varies based on whether you have individual coverage or family coverage. For 2024, the limit is $4,150 for individual coverage and $8,300 for family coverage. These numbers increase most years to keep pace with inflation, so the 2025 limits will be different — check the IRS website or your plan documents for the current year's figure.
The limit applies to all your contributions combined: money you put in yourself, money your employer puts in, and money anyone else contributes on your behalf. If you exceed the limit, you owe taxes on the overage plus a 20 percent penalty, so it matters to track what goes in.
You can contribute up to the limit even if you do not use the money that year. Unlike a flexible spending account (FSA), HSA funds roll over indefinitely, so there is no "use it or lose it" rule.
Key Takeaways
- The annual contribution limit for 2024 is $4,150 for individual coverage and $8,300 for family coverage, and these limits increase most years.
- Your employer's contributions count toward your limit, so you need to know what they put in before you add your own money.
- If you turn 55 during the year, you can contribute an extra $1,000 as a catch-up contribution, but only if you remain HSA-may be able to access.
- Exceeding the limit triggers a 20 percent penalty plus income tax on the overage, so tracking contributions matters.
- You can contribute for only the months you were actually covered by an HSA-may be able to access plan, not for the full year if you switched plans mid-year.
How employer contributions reduce your personal limit
If your employer contributes to your HSA, that money counts toward your annual limit. This is the most common source of confusion: you cannot contribute $4,150 on top of what your employer puts in. The total from all sources cannot exceed the limit.
For example, if your employer contributes $2,000 to your HSA, you can contribute only $2,150 more (for individual coverage in 2024). Your employer should tell you the amount they plan to contribute, usually during open enrollment or when you enroll in the HSA-may be able to access plan. If you are unsure, ask your benefits administrator or check your plan documents.
Some employers contribute nothing; others contribute the full limit. A few contribute more than the limit, which is illegal — if this happens, contact your employer's benefits team when ready to correct it.
Catch-up contributions if you are 55 or older
Once you turn 55, you can contribute an additional $1,000 per year on top of the standard limit. This is called a catch-up contribution and applies only to you, not to your spouse, even if they are also 55 or older.
If you are married and both 55 or older with family coverage, you can each contribute an extra $1,000, for a combined catch-up of $2,000. But the catch-up applies only to the person who turned 55 — your spouse cannot use your catch-up amount.
You remain may be able to access for catch-up contributions as long as you stay enrolled in an HSA-may be able to access plan. Once you enroll in Medicare, you can no longer contribute to an HSA, so catch-up contributions stop at that point.
Pro-rata contributions if you enroll mid-year
If you enroll in an HSA-may be able to access plan partway through the year, you cannot contribute the full annual limit. Instead, you calculate a pro-rata contribution based on the number of months you were covered.
The calculation is straightforward: divide the annual limit by 12 and multiply by the number of months you were covered. If you enroll in July (7 months remaining in the year) with individual coverage, your limit is roughly $2,420 for 2024. If you enroll on the first day of a month, that month counts; if you enroll mid-month, it typically does not count unless your plan says otherwise.
This rule also applies if you drop HSA-may be able to access coverage before the year ends. If you switch to a non-HSA plan in September, you can contribute only for the months you were covered (January through August, or 8 months).
Tracking contributions across multiple accounts
If you have changed employers or opened an HSA with a different bank, you may have more than one HSA. The contribution limit applies to all your HSAs combined, not to each account separately. You must add up contributions across every account you own to make sure you stay within the limit.
This is your responsibility to track. The IRS does not automatically know about all your accounts, and your HSA provider knows only about the account they manage. If you exceed the limit across multiple accounts, you owe the penalty on the overage.
If you discover you have over-contributed, you can withdraw the excess and the earnings on that excess before your tax filing important date (usually April 15 of the following year) and avoid the penalty. After that important date, the penalty applies. Some HSA providers offer forms to help you calculate and correct over-contributions, so contact yours if you think you have contributed too much.
What happens if you over-contribute
Contributions above the limit are subject to income tax plus a 20 percent penalty. The penalty applies to the excess amount only, not to your entire HSA balance. If you contributed $4,500 when the limit was $4,150, you owe income tax and a 20 percent penalty on the $350 overage.
You can correct an over-contribution by withdrawing the excess and any earnings it generated before your tax return is due. If you do this, you avoid the penalty. If you do not correct it by the important date, you report the overage on your tax return and pay both the tax and the penalty.
Some employers offer a "cafeteria plan" that allows you to reduce your contribution if you realize mid-year you are on track to over-contribute. Ask your benefits administrator whether this option is available to you.
Contribution limits for spouses with separate family coverage
If you and your spouse each have individual HSA-may be able to access plans instead of family coverage, you each have your own $4,150 limit for 2024. You cannot combine your limits or share contributions. Each person tracks their own account and their own contributions.
This is different from family coverage, where both spouses are covered under one plan and share a single $8,300 limit. If you switch from individual plans to family coverage mid-year, the pro-rata rules explore, and the calculation becomes more complex — your benefits administrator can help you work through it.
Frequently Asked Questions
Can I contribute more if I have a high-deductible health plan with a very high deductible?
No. The contribution limit is the same regardless of your deductible amount. A higher deductible does not increase how much you can put into your HSA — it only means you pay more out of pocket before your insurance kicks in.
What if my employer contributes after I have already maxed out my own contribution?
You are over the limit, and the excess is subject to the 20 percent penalty plus income tax. Contact your employer when ready to have them reverse or redirect the contribution. If they cannot, you will need to withdraw the excess before your tax important date to avoid the penalty.
Do catch-up contributions count toward my regular limit?
No. The $1,000 catch-up contribution is separate from the standard limit. If you are 55 or older with individual coverage in 2024, your total limit is $5,150 ($4,150 standard plus $1,000 catch-up).
Can I contribute to an HSA if I am covered by my spouse's plan?
Yes, but only if the plan is HSA-may be able to access. You both contribute to the same family HSA account and share the $8,300 limit. You cannot each have a separate HSA if you are covered by the same family plan.
What if I miss the important date to correct an over-contribution?
You report the overage on your tax return and pay income tax plus a 20 percent penalty on the excess amount. The penalty is in addition to the regular income tax, so over-contributing is expensive. If you realize the mistake after the important date has passed, consult a tax professional about your options.