Annual contribution limits are set by the IRS and change each year

The amount you can contribute to a Health Savings Account depends on the type of health insurance coverage you have. The IRS sets these limits annually, and they increase most years to account for inflation. For 2024, the limits are $4,150 for individual coverage and $8,300 for family coverage. For 2025, those amounts rise to $4,300 and $8,550.

These are the maximum amounts you can put in during a calendar year. You cannot exceed these limits even if you have the money available. If you contribute more than allowed, the IRS charges a 6 percent excise tax on the overage each year it remains in the account.

Your actual limit depends on which month you open or change your HSA-may be able to access health plan. If you enroll mid-year, you can contribute a prorated amount based on the months you were covered. Some people use the "last-month rule" to contribute a full year's amount even if they enroll late, but this requires you to stay enrolled through the following year or face tax penalties.

Key Takeaways

  • The IRS sets annual HSA contribution limits that vary by coverage type, and these limits increase most years.
  • For 2024, you can contribute up to $4,150 for individual coverage or $8,300 for family coverage; limits are higher in 2025.
  • Contributing more than the annual limit triggers a 6 percent excise tax on the overage each year it sits in your account.
  • If you enroll in an HSA-may be able to access plan mid-year, your contribution limit is reduced based on how many months you were covered.
  • Catch-up contributions of an additional $1,000 are allowed if you are 55 or older, but only if you remain HSA-may be able to access.

Who can contribute and when the limits apply

You can only contribute to an HSA if you are enrolled in a high-deductible health plan (HDHP) and have no other health coverage that would disqualify you. Disqualifying coverage includes traditional health insurance, Medicare, TRICARE, or coverage through a spouse's plan that is not an HDHP. If you have any of these, you cannot contribute to an HSA that year, even if you also have an HDHP.

The contribution year runs January 1 through December 31. If you open an HSA in March, you can only contribute one-twelfth of the annual limit for each remaining month of that year (March through December = 10 months). If you close your HSA or lose HSA-may be able to access coverage in August, your limit for that year is reduced to eight-twelfths of the full amount.

Your employer may also contribute to your HSA. Employer contributions count toward your annual limit. If your employer contributes $2,000 and the individual limit is $4,150, you can only add $2,150 of your own money that year.

Catch-up contributions if you are 55 or older

Once you turn 55, you become may be able to access to contribute an additional $1,000 per year on top of the standard limit. This is called a catch-up contribution and applies for the year you turn 55 and every year after, as long as you remain HSA-may be able to access.

If you are 55 and have family coverage, your total contribution limit is $8,300 (or $8,550 in 2025) plus $1,000 = $9,300 (or $9,550 in 2025). The catch-up amount does not increase with inflation; it stays at $1,000 annually.

The catch-up contribution ends the year you enroll in Medicare, even if you turn 65 mid-year. Once you are on Medicare, you can no longer contribute to an HSA at all, though you can withdraw money for may have access to medical expenses without penalty.

What happens if you contribute too much

If you put more money into your HSA than the annual limit allows, the IRS imposes a 6 percent excise tax on the excess amount. This tax is charged each year the overage remains in the account. For example, if you contribute $5,000 when the limit is $4,150, you owe a 6 percent tax on the $850 overage in year one. If you do not withdraw that $850 by the end of year two, you owe another 6 percent tax on it.

You are responsible for catching and correcting overages yourself. Your HSA provider does not automatically flag contributions that exceed the limit. To fix an overage, you must withdraw the excess amount plus any earnings on that amount before the tax filing deadline (usually April 15 of the following year). You will also owe income tax on the earnings portion.

If you discover an overage after the deadline has passed, you still owe the 6 percent excise tax for each year the money sat in the account. Some people file an amended tax return to report the overage and pay the tax, but this does not eliminate the penalty.

Contribution deadlines and how to contribute

You can contribute to your HSA at any time during the calendar year. There is no specific deadline during the year itself. However, if you want to claim a contribution on your tax return for a given year, you must make the deposit by the tax filing deadline for that year, which is usually April 15 of the following year (or October 15 if you file an extension).

You can contribute through several methods: payroll deduction (if your employer offers it), a direct transfer from your bank account, a check mailed to the HSA provider, or an online transfer. Payroll deduction is the most common method because it reduces your taxable income automatically and avoids the need to file paperwork with your tax return.

If you contribute outside of payroll, you must report the contribution on your tax return using IRS Form 8889. Your HSA provider sends you a statement showing all contributions and withdrawals, which you use to complete the form. Failing to report contributions can result in penalties and interest.

How contribution limits change year to year

The IRS adjusts HSA contribution limits each year based on inflation, rounded to the nearest $50. The individual limit has increased from $3,850 in 2022 to $4,150 in 2024 to $4,300 in 2025. The family limit has risen from $7,700 to $8,300 to $8,550 over the same period. These increases are not automatic in your account; they simply become the new legal maximum you are allowed to contribute.

Your HSA provider should notify you of the new limits before the year begins, but you are responsible for knowing them. If you contribute based on an old limit and the new limit is lower (which is rare), you would have an overage. If the new limit is higher and you contributed based on the old limit, you can still add more money up to the new limit.

Frequently Asked Questions

Can my employer and I both contribute to my HSA in the same year?

Yes. Your employer's contributions and your own contributions both count toward the same annual limit. If your employer contributes $2,000 and the limit is $4,150, you can contribute up to $2,150 more. The total from both sources cannot exceed the limit.

What if I change jobs mid-year and lose HSA-may be able to access coverage?

Your contribution limit for that year is reduced based on the months you were covered. If you were covered for six months, you can only contribute half the annual limit. You can still withdraw money from your HSA for may have access to medical expenses without penalty, even after you lose coverage.

Do unused contributions roll over to the next year?

Yes. Unlike a flexible spending account (FSA), HSA money does not expire. Any balance you do not spend carries forward indefinitely. There is no "use it or lose it" rule, which is one reason HSAs are valuable for long-term health savings.

Can I contribute to an HSA if I am on Medicare?

No. Once you enroll in Medicare, you are no longer HSA-may be able to access and cannot make new contributions. You can still withdraw money from your existing HSA for may have access to medical expenses without penalty, but you cannot add new funds.

What if I made a mistake and contributed too much last year?

You can withdraw the excess plus earnings before the tax filing deadline to avoid the 6 percent excise tax. If you miss that deadline, you owe the tax for each year the overage remains. File an amended return if needed and pay the penalty, or consult a tax professional about your options.