HSA contributions made through payroll come out of your paycheck before federal income tax, Social Security and Medicare, so your take-home pay drops by less than the amount you save. The HSA contribution limit for 2026 is $4,400 for self-only coverage and $8,750 for family coverage.
Below is how a health savings account works on your pay stub, who can contribute, and what the deduction looks like on two real 2026 paychecks.
Who can contribute to an HSA
You can contribute to an HSA only if you're covered by a high-deductible health plan (HDHP) and don't have other disqualifying health coverage. You also can't be enrolled in Medicare or be claimed as someone else's dependent. For 2026, a plan counts as an HDHP if it meets these IRS thresholds:
| 2026 HDHP rule | Self-only | Family |
|---|---|---|
| Minimum annual deductible | $1,700 | $3,400 |
| Maximum out-of-pocket | $8,500 | $17,000 |
Your employer will usually label which plan options are HSA-eligible during open enrollment. If you're unsure, IRS Publication 969 has the full eligibility rules.
HSA contribution limit 2026
| Coverage | 2026 limit | Per paycheck, biweekly (26) | Per paycheck, semimonthly (24) |
|---|---|---|---|
| Self-only | $4,400 | $169.23 | $183.33 |
| Family | $8,750 | $336.54 | $364.58 |
If you're 55 or older, you can contribute an extra $1,000 catch-up each year. The limit includes everything that goes into your HSA for the year: your payroll contributions, any employer contributions and anything you deposit on your own. If your employer puts in money, subtract it from the limit before choosing your payroll amount.
Which taxes an HSA payroll deduction skips
When your HSA contribution runs through your employer's cafeteria plan, it's excluded from wages for federal income tax, Social Security and Medicare. That's a bigger break than a traditional 401(k), which still pays Social Security and Medicare.
Most states follow the federal treatment, but a few tax HSA contributions at the state level. Check your state tax agency's guidance if your state wages on your W-2 look higher than your federal wages. Our guide to pre-tax vs after-tax deductions compares the treatment of each common deduction.
If you contribute directly to your HSA instead of through payroll, you can still deduct the contribution on your tax return, but you don't get back the Social Security and Medicare tax that was already withheld. That's one reason payroll contributions are usually the better deal when your employer offers them.
Worked example: maxing out a self-only HSA in Florida
A single filer in Florida earns $58,000, paid biweekly ($2,230.77 per paycheck). She contributes $169.23 per paycheck to reach the $4,400 self-only limit. Florida has no state income tax, so only federal taxes change. Estimated with the PaycheckHubs paycheck calculator:
| Per biweekly paycheck | No HSA | $169.23 HSA |
|---|---|---|
| Federal income tax | $183.85 | $163.54 |
| Social Security | $138.31 | $127.82 |
| Medicare | $32.35 | $29.89 |
| Take-home pay | $1,876.26 | $1,740.29 |
Her take-home pay drops by $135.97 per paycheck, while $169.23 goes into her HSA. Over the year, she saves about $4,400 and pays about $865 less in tax. See the Florida paycheck calculator to try other amounts.
Worked example: family HSA in Michigan
A married couple filing jointly in Michigan earns $110,000, paid semimonthly ($4,583.33 per paycheck). They contribute $364.58 per paycheck to reach the $8,750 family limit. This estimate assumes Michigan treats the contribution the same way as federal law does.
| Per semimonthly paycheck | No HSA | $364.58 HSA |
|---|---|---|
| Federal income tax | $368.33 | $324.58 |
| Social Security | $284.17 | $261.56 |
| Medicare | $66.46 | $61.17 |
| Michigan income tax | $173.90 | $158.40 |
| Take-home pay | $3,690.47 | $3,413.04 |
Their take-home pay drops by $277.43 per paycheck while $364.58 goes into the HSA. Over the year, their estimated taxes fall by about $2,092. If they lived in a Michigan city with its own income tax, the savings could be a little higher. The Michigan paycheck calculator has a box for local tax.
How HSA money works after it leaves your paycheck
- It's yours. The account belongs to you, not your employer, and it stays with you if you change jobs.
- It rolls over. Unused money carries over year to year. There's no use-it-or-lose-it rule like a typical FSA.
- Tax-free for medical costs. Withdrawals for qualified medical expenses aren't taxed. Withdrawals for other purposes are taxable and, before age 65, generally come with an extra penalty.
- You can change it. Unlike most cafeteria plan elections, you can usually change your HSA payroll amount during the year, subject to your employer's process.
Comparing an HSA with a flexible spending account is a common question at open enrollment. Our article on FSA vs HSA walks through the differences, and how health insurance deductions affect your paycheck covers the premium side.
Frequently Asked Questions
What is the HSA contribution limit for 2026?
$4,400 for self-only HDHP coverage and $8,750 for family coverage. People 55 and older can add a $1,000 catch-up.
Do employer HSA contributions count toward the limit?
Yes. Employer contributions and your own payroll contributions share the same annual limit.
Are HSA payroll deductions subject to Social Security tax?
No, not when they go through your employer's cafeteria plan. They skip federal income tax, Social Security and Medicare.
What if I contribute more than the limit?
Excess contributions can be subject to an extra tax unless you withdraw them, and the earnings on them, by your tax filing deadline. Contact your HSA provider to request a correction.
Sources
- IRS Publication 969, Health Savings Accounts and Other Tax-Favored Health Plans
- IRS Revenue Procedure 2025-19 (2026 HSA limits)
- IRS Publication 15, Employer's Tax Guide
Run the numbers for your state
Written and checked against IRS, Social Security Administration and state tax agency publications for the 2026 tax year. General information, not tax, legal or financial advice. Read our editorial policy, calculation methodology and sources.