The annual limit depends on your coverage type and changes each year
The IRS sets a maximum amount you can contribute to an HSA in a calendar year, and that limit is different for individual coverage than for family coverage. For 2024, the limit is $4,150 for self-only coverage and $8,300 for family coverage. For 2025, those limits increase to $4,300 and $8,550. These numbers change annually based on inflation, so check your plan documents or the IRS website each January to confirm the current year's limit.
The limit applies to all contributions combined—money you put in, money your employer puts in, and money anyone else contributes on your behalf all count toward the same ceiling. If you exceed the limit, the excess is taxable and you may owe a 20 percent penalty on the overage.
You must be enrolled in a high-deductible health plan (HDHP) to contribute to an HSA at all. If you drop your HDHP coverage mid-year, you can only contribute a prorated amount for the months you were covered, unless you may have access to for a special circumstance like marriage or birth.
Key Takeaways
- The annual contribution limit for 2024 is $4,150 for individual coverage and $8,300 for family coverage; limits increase slightly each year.
- All contributions from you, your employer, and anyone else count toward the same annual limit.
- Exceeding the limit triggers a 20 percent penalty on the overage plus income tax on the excess amount.
- You must be enrolled in an HDHP for the entire month to contribute for that month, with rare exceptions for life changes.
- Catch-up contributions of $1,000 extra per year are allowed if you are age 55 or older.
Employer contributions count toward your limit
When your employer deposits money into your HSA, that amount reduces how much you can contribute yourself. If your employer puts in $2,000 and the annual limit is $4,150 for individual coverage, you can only add $2,150 more that year. Many employers provide a summary of their contributions on your pay stub or in your benefits portal.
Some employers offer a matching contribution—they match a percentage of what you contribute, similar to a 401(k). Even though the employer match is optional on your part, it still counts toward the annual limit. Plan accordingly if your employer offers a match.
Catch-up contributions if you are 55 or older
If you turn 55 during the calendar year, you can contribute an additional $1,000 above the standard limit for that year and every year after, as long as you remain enrolled in an HDHP. This catch-up contribution is separate from the main limit and does not require your employer to participate.
The $1,000 catch-up is available only once per person per year, even if you have multiple HSAs. If you are married and both spouses are 55 or older, each spouse can make their own $1,000 catch-up contribution to their own HSA.
What happens if you contribute too much
If you put more money into your HSA than the annual limit allows, the IRS treats the excess as taxable income. You owe income tax on the overage at your ordinary tax rate, plus a 20 percent penalty. For example, if you contribute $5,000 when the limit is $4,150, the $850 overage is taxed as income plus 20 percent penalty.
You can correct an overage by withdrawing the excess amount and any earnings on it before the tax filing deadline (usually April 15 of the following year). If you withdraw the excess in time, you avoid the penalty, though you still owe income tax on any earnings that accumulated on the excess funds.
Some HSA providers allow you to recharacterize contributions—move money from your HSA to another account—if you discover an overage. Check with your HSA custodian about their process and deadline for corrections.
Prorated limits when coverage changes mid-year
If you enroll in an HDHP partway through the year, you can only contribute a prorated amount based on the number of months you were covered. If you enroll in July (7 months remaining), you can contribute 7/12 of the annual limit. If you drop HDHP coverage in September, you can only contribute for the months January through September.
The exception is the "last-month rule." If you are covered by an HDHP on December 1, you can contribute the full annual amount for that year, even if you enrolled late. However, you must maintain HDHP coverage through December 31 of the following year, or you will owe back taxes and penalties.
How to track your contributions throughout the year
Your HSA custodian (the bank or financial institution holding your account) sends you statements showing all deposits, including contributions from you and your employer. Review these statements each month to ensure the total does not exceed the annual limit. Many HSA providers also show your year-to-date total in their online portal.
If you have multiple jobs or multiple HSAs, you are responsible for tracking the combined total across all accounts. The IRS does not automatically flag overages; you must catch and correct them yourself. Keep records of all contributions and employer statements to document your compliance.
Frequently Asked Questions
Can I contribute more if I have a higher deductible?
No. The contribution limit is set by the IRS and applies to all HSA holders with the same coverage type, regardless of deductible amount. A higher deductible does not increase how much you can put in.
What if my employer contributes after I have already maxed out my own contribution?
The employer contribution still counts toward the annual limit. If you have already contributed your maximum and your employer adds more, the total will exceed the limit and you will owe tax and penalty on the overage. Coordinate with your employer's benefits team to avoid this.
Do HSA contributions roll over if I do not use them?
Yes. Unlike FSAs, HSA funds roll over indefinitely. Money you do not spend in one year stays in the account and can be used in future years. There is no "use it or lose it" rule for HSAs.
Can I contribute to an HSA if I am on Medicare?
No. Once you enroll in Medicare Part A or Part B, you are no longer covered by an HDHP and cannot make new HSA contributions. You can still withdraw money from an existing HSA for medical expenses without penalty.
What if I contribute and then lose HDHP coverage the same month?
You can only contribute for months in which you are covered by an HDHP on the first day of the month. If you lose coverage mid-month, that month does not count. If you enroll and lose coverage in the same month, you cannot contribute for that month.