The 2024 HSA contribution limit depends on your coverage type

For 2024, you can contribute up to $4,150 if you have individual coverage or $8,300 if you have family coverage under a high-deductible health plan. These are the maximum amounts you, your employer, and anyone else can put into your HSA combined in a single calendar year. The IRS sets these limits and adjusts them annually for inflation.

If you turn 55 during 2024, you can add an extra $1,000 catch-up contribution on top of the standard limit. This catch-up amount stays the same each year regardless of inflation. Once you reach 65, you stop being able to make catch-up contributions, though you can still contribute the regular amount if you remain enrolled in a high-deductible plan.

These limits apply only if you are covered by a high-deductible health plan for the entire year. If you switch plans mid-year or lose coverage, the rules change — you may only contribute a prorated amount based on the months you were actually covered.

Key Takeaways

  • Individual coverage allows $4,150 in total contributions for 2024; family coverage allows $8,300, regardless of who contributes the money.
  • If you turn 55 in 2024, you can add $1,000 extra as a catch-up contribution on top of the standard limit.
  • The limit covers all contributions combined — yours, your employer's, and anyone else's — so you must track the total to avoid overage penalties.
  • Contributions made after December 31, 2024 do not count toward the 2024 limit, even if you are making up for months you were not covered.

How employer contributions count toward your limit

If your employer contributes to your HSA, that money counts against your annual limit. For example, if your employer puts $2,000 into your HSA and you have individual coverage, you can only contribute $2,150 more in 2024 to stay within the $4,150 cap. Many employers tell you their contribution amount upfront so you can plan accordingly.

Some employers make contributions throughout the year in paychecks; others make a lump sum at the beginning of the year. Either way, the total counts the same. If your employer contributes more than the limit allows, you are responsible for reporting the overage to the IRS on your tax return, and you will owe taxes plus a 6 percent penalty on the excess amount.

Employer contributions are not taxed as income to you, and they do not reduce your ability to contribute your own money — they just reduce how much of your own money you can put in without exceeding the limit.

What happens if you contribute too much

If you put more money into your HSA than the annual limit allows, the IRS charges you a 6 percent excise tax on the excess amount each year it remains in the account. You also owe income tax on the overage. The penalty applies every year until you withdraw the excess and any earnings it generated.

To fix an overage, you must withdraw the excess contribution plus any interest or investment gains it earned by the tax filing deadline for that year (usually April 15 of the following year). If you withdraw it by that date, you avoid the 6 percent penalty, though you still owe income tax on any earnings the excess generated.

The best way to avoid this is to track contributions carefully if you have both employer contributions and your own. Ask your HSA provider for a year-to-date balance statement before you make large personal contributions, especially late in the year.

Mid-year changes to your coverage

If you enroll in a high-deductible plan partway through 2024, you can only contribute a prorated amount based on the months you were covered. The IRS uses a month-by-month calculation: divide the annual limit by 12, then multiply by the number of months you had coverage. If you had coverage for six months with individual coverage, you could contribute $2,075 (half of $4,150).

If you lose coverage before the end of the year — for example, you switch to a different health plan or lose your job — you cannot make contributions for the months after coverage ends. If you already contributed more than the prorated amount allows, you must withdraw the excess by the tax deadline to avoid penalties.

The one exception is the "testing period" rule: if you enroll in a high-deductible plan on the first day of a month, you can contribute the full annual amount for that year, even if you only stay enrolled for part of the year. This rule exists to encourage people to open HSAs, but it comes with a catch — if you drop the high-deductible plan before the end of the year, you must repay any excess contributions.

Catch-up contributions if you are 55 or older

The $1,000 catch-up contribution is available only to account holders who are 55 or older by December 31 of the tax year. If you turn 55 in 2024, you can make the catch-up contribution for 2024 and every year after until you turn 65. The $1,000 amount does not change year to year, even though the standard limit adjusts for inflation.

You can only make one catch-up contribution per year, and it is separate from the standard limit. If you have family coverage and are 55, you still contribute to a single HSA account, so the catch-up is $1,000 total, not $1,000 per family member. If both spouses are 55 or older and have separate HSA accounts, each account can receive a $1,000 catch-up contribution.

Once you turn 65, you lose the ability to make catch-up contributions. You can still contribute the standard amount if you remain enrolled in a high-deductible plan, but the extra $1,000 is no longer available.

Tracking contributions across multiple sources

If you receive contributions from your employer, make your own contributions, and have a spouse who also contributes to a family HSA, you need a system to track the total. The HSA provider sends you statements, but the responsibility to stay under the limit is yours. Many people use a simple spreadsheet: list each contribution as it happens, add them up monthly, and compare to the annual limit.

If you have a spouse with a separate HSA account (which is allowed for family coverage), each account has its own $4,150 limit for individual coverage or shares the $8,300 family limit if both are covered under the same family plan. The rules vary depending on how your coverage is structured, so confirm with your employer or HSA provider how the limit applies to your situation.

Your HSA provider can usually tell you the year-to-date total of all contributions to your account. Some providers offer online dashboards that update regularly. Use this information before you make any large contributions late in the year.

Frequently Asked Questions

Can I contribute to an HSA if I am covered by Medicare?

No. Once you enroll in Medicare, you are no longer may be able to access to contribute to an HSA, even if you also have a high-deductible plan. You can still withdraw money from an existing HSA for may have access to medical expenses without penalty, but new contributions are not allowed. If you are still working and covered by a high-deductible plan through your employer, you must choose between the employer plan and Medicare.

What if my employer changes their contribution amount mid-year?

Your total contribution limit for the year does not change. If your employer increases their contribution, you must reduce your own contributions to stay within the annual cap. If they decrease their contribution, you can increase yours. Track the running total throughout the year to avoid going over.

Can I make contributions for a past year?

You can make contributions for the previous tax year until the tax filing deadline (usually April 15). These contributions count toward the previous year's limit, not the current year. After the deadline, you can only contribute to the current year's limit. Your HSA provider can tell you the deadline for prior-year contributions.

Do HSA contributions reduce my taxable income?

Yes, if you contribute your own money to an HSA, you deduct it on your tax return, which lowers your taxable income. Employer contributions are not taxed as income to you at all. This tax advantage is one of the main reasons HSAs are valuable for managing healthcare costs.

What if I contribute the full amount but then switch to a non-high-deductible plan?

You cannot make new contributions once you leave a high-deductible plan, but the money already in your HSA stays there. You can still withdraw it for may have access to medical expenses without penalty. If you contributed more than the prorated limit allows for the months you were covered, you must withdraw the excess by the tax deadline to avoid the 6 percent penalty.