How employer HSA contributions affect your annual limit

The main rule

One limit covers several sources of money

The IRS does not give you one contribution limit and your employer a separate one. Employer deposits reduce the amount that you or someone else can add to the same Health Savings Account for the year.

Pretax HSA contributions taken from your paycheck through a cafeteria plan are treated as employer contributions for federal tax reporting. They are generally included with the employer's own deposits in Box 12 of Form W-2 under code W.

Contributions you make directly to the HSA outside payroll also count. A rollover or direct trustee-to-trustee transfer from another HSA generally does not reduce the annual contribution limit.

2026 limits

Start with the limit that applies to your coverage

For 2026, the contribution limit is $4,400 for self-only qualifying high deductible health plan coverage and $8,750 for family coverage. An eligible person who is age 55 or older at the end of 2026 may contribute an additional $1,000.

These are calendar-year limits. Your employer's benefits plan may renew on a different schedule, but HSA contributions are still measured by the tax year.

The IRS announced the 2027 self-only and family limits in Revenue Procedure 2026-24. The catch-up amount is set by federal law and remains $1,000.

The worksheet

Calculate how much contribution room remains

Use the limit for the correct calendar year, then subtract every contribution assigned to that year. Do not subtract HSA withdrawals or the balance carried over from earlier years.

For a full-year eligible person with family coverage in 2026, the worksheet begins like this:

If your payroll system combines the employer deposit and your pretax payroll deductions into one year-to-date HSA amount, use that combined figure once. Do not subtract the same payroll contributions again.

Find the numbers

Check payroll records before relying on your W-2

During the year, look at your latest pay statement, HSA administrator account, and employer benefits portal. Confirm whether the year-to-date figure includes only your deductions or also includes the employer's deposit.

After the year ends, Form W-2 Box 12 code W generally reports employer HSA contributions and employee pretax contributions made through a cafeteria plan. Form 5498-SA from the HSA custodian reports contributions received for the account. Form 8889 is used to report HSA contributions with your federal tax return.

These documents may not arrive at the same time, and contributions made early in the following year can be designated for the prior year. Check the tax year attached to each contribution instead of relying only on the transaction date.

1. 1
   Confirm your annual limit.

   Use the calendar year, coverage level, age, and months of HSA eligibility that apply to you.

2. 2
   Find the employer deposit.

   Check whether it was deposited all at once or in installments.

3. 3
   Total your pretax payroll deductions.

   Include deductions from every employer you had during the year.

4. 4
   Add contributions made outside payroll.

   Include direct deposits made by you or another person and any qualified HSA funding distribution.

Family coverage

Married couples may share one family limit

If either spouse has family HDHP coverage and both spouses are eligible individuals, the spouses generally share one family contribution limit. They can divide that limit equally or agree to divide it another way. Contributions made to either spouse's HSA, including employer contributions, use part of the shared limit.

The age 55 catch-up is individual. If both eligible spouses are at least 55 and not enrolled in Medicare, each may make a $1,000 catch-up contribution, but each spouse must put that catch-up contribution into an HSA in that spouse's own name.

Eligibility changes

Your personal limit may be lower than the annual maximum

The published annual maximum assumes that the full limit applies to you. Your actual limit may be lower if you were HSA eligible for only part of the year, changed between self-only and family coverage, enrolled in Medicare, or had another type of coverage that affected HSA eligibility.

The IRS last-month rule may allow some people who are eligible on December 1 to use a larger limit. It also creates a testing period. Losing eligibility during that testing period can cause part of the contribution to become taxable and subject to an additional 10% tax, with limited exceptions.

Recalculate before contributing more if any of these apply:

• You changed jobs and both employers contributed to an HSA.
• Your employer made a late or unexpected deposit.
• You changed coverage levels during the calendar year.
• You enrolled in Medicare or received retroactive Medicare coverage.
• Your spouse also has family HDHP coverage or receives employer HSA contributions.

Excess contributions

Going over the limit can create a recurring tax

An excess contribution is generally subject to a 6% excise tax for each tax year it remains in the HSA. The excess is not deductible, and an excess employer contribution may also need to be included in income.

The IRS says you may avoid the excise tax on an excess amount by withdrawing the excess and its earnings by the due date, including extensions, of the tax return for the contribution year and reporting the earnings as required. Ask the HSA custodian for an excess contribution correction rather than taking an ordinary HSA withdrawal.