2026 HSA limits, single coverage

HSA payroll deduction,
the FICA-exempt savings vehicle

HSA payroll-deducted contributions reduce both federal income tax AND FICA. At a 22% bracket, $1 contributed costs about $0.70 of take-home, vs $0.78 for a 401(k) contribution. The 2026 single-coverage limit is $$4,300; family is $$8,550. Below: the math, the matrix, and why HSA beats 401(k) for triple tax-free.

The headline math

At 12% federal bracket: $1 HSA = $0.80 take-home cost (12% + 7.65% FICA = 19.65% saved).
At 22% federal bracket: $1 HSA = $0.70 take-home cost (22% + 7.65% = 29.65% saved).
At 24% federal bracket: $1 HSA = $0.68 take-home cost (24% + 7.65% = 31.65% saved).
Plus 5% state tax: add another 5 cents of savings (most states recognise HSA the same way the federal does).

Compare to traditional 401(k), which saves the federal income tax but NOT FICA. HSA's 7.65% FICA savings is the unique advantage in the US tax code.

Tax estimate, not tax advice

Matrix

HSA single-coverage maximum: take-home reduction by salary

Each row shows the impact of contributing the full single-coverage HSA limit ($4,300) at the indicated salary. "Federal saved" is income tax avoided. "FICA saved" is the unique HSA advantage. "True cost" is the actual reduction in annual take-home.

SalaryMarginal bracketFederal savedFICA savedTotal savedTrue take-home cost
$50,00012%$516$329$845$3,455
$75,00022%$946$329$1,275$3,025
$100,00022%$946$329$1,275$3,025
$150,00024%$1,032$329$1,361$2,939

Calculated using marginal federal bracket on the contribution and 7.65% FICA. State tax not included; most states match the federal HSA treatment for additional savings of 0% to 9%.

How HSA works

The triple tax advantage

Tax advantage 1: contribution exclusion

Payroll-deducted HSA contributions are excluded from federal income tax, FICA, and most state income tax. Your employer reports HSA contributions in Box 12 Code W of your W-2 (information only; not taxable). Direct contributions to your HSA bank (outside payroll) get the federal income tax exclusion via an above-the-line deduction on Form 1040 Schedule 1, but they do NOT get the FICA exclusion. Always prefer payroll-deducted HSA when possible.

Tax advantage 2: tax-free growth

HSA balances can be invested in mutual funds, ETFs, or stocks (depending on your HSA custodian's offerings). Investment growth inside the HSA is tax-free: no annual taxes on dividends, interest, or capital gains. Same as a Roth IRA in this respect. Many HSA custodians require a minimum cash balance ($1,000-$2,000) before allowing investment of the rest; some have no minimum. Look for a custodian with low-cost index fund options and no monthly fees once invested.

Tax advantage 3: tax-free qualified withdrawals

Withdrawals from an HSA used for qualified medical expenses (defined in IRS Publication 502) are tax-free at any age. There is no time limit on the withdrawal: a medical expense paid out-of-pocket today can be reimbursed from the HSA tax-free decades later, as long as you keep the receipt. This makes the HSA function as both an emergency medical fund AND a long-term tax-advantaged investment vehicle.

Qualified medical expenses include doctor visits, prescriptions, dental and vision care, COBRA premiums, qualified long-term care insurance premiums, and (after age 65) Medicare premiums. The list also includes mental health care, chiropractic care, acupuncture, and many other categories. Health-related items like gym memberships, weight-loss programs (in some cases), and over-the-counter medications became eligible after the CARES Act of 2020.

After age 65: HSA becomes a flexible IRA

After you turn 65, withdrawals from the HSA for non-medical purposes are taxed as ordinary income (no 20% penalty). At that point, the HSA functions exactly like a traditional IRA: tax-deferred growth, ordinary income at withdrawal. Combined with the tax-free withdrawals for medical expenses (which never expire), the HSA in retirement is more flexible than either Roth IRA or traditional IRA. Many savers explicitly use the HSA as their primary retirement-medical-fund vehicle, paying out-of-pocket for current medical expenses while letting the HSA balance compound tax-free for decades.

Eligibility requirements

Who can contribute to an HSA

To contribute to an HSA, you must be enrolled in a qualified high-deductible health plan (HDHP) with no other disqualifying coverage. The 2026 minimum HDHP deductibles are $1,650 self-only and $3,300 family. The maximum HDHP out-of-pocket limits are $8,300 self-only and $16,600 family. Most employer-sponsored "HSA-eligible" or "HDHP" plans meet these criteria; check your plan documents to confirm.

Disqualifying coverage includes: enrollment in Medicare, enrollment in any non-HDHP medical plan (including a spouse's traditional plan that covers you as a dependent), being claimed as a dependent on someone else's tax return, and use of TRICARE or VA medical benefits within the last three months (in some cases). FSA coverage in the same year disqualifies HSA contributions, with one exception: a "limited-purpose FSA" (covering only dental and vision) is HSA-compatible.

If you become Medicare-eligible (typically at 65), you can no longer contribute to an HSA. The HSA balance remains yours and can still be used for qualified medical expenses tax-free; you just cannot add new contributions. Source: IRS Publication 969 (HSAs and Other Tax-Favored Health Plans).

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Sources

Where the 2026 numbers come from

Related

Other deduction and paycheck pages

401(k) impact

The other major pre-tax deduction. Saves federal but not FICA. True cost ~$0.78 per $1.

SS wage base

What happens after you cross $184,500 of wages: the FICA savings disappear.

$100K single

At 22% bracket, where HSA savings are most meaningful.

$150K MFJ

Family HDHP HSA limit ($8,550) gets significant tax savings here.

Methodology

How the federal and state tax engines on this site compute take-home.

Salary calculator

Try any salary, status, and state.

Frequently Asked Questions

How much does an HSA contribution reduce my take-home pay?+
HSA payroll-deducted contributions reduce both federal income tax AND FICA (Social Security plus Medicare). At a 22% federal bracket, the combined tax savings is 22% + 7.65% = 29.65% per dollar contributed. So $1 contributed reduces take-home by about $0.70. At 12% federal bracket, savings are 12% + 7.65% = 19.65% per dollar, so $1 contributed reduces take-home by about $0.80. The 2026 single-coverage HDHP-eligible HSA contribution limit is $4300, so a maxed-out single HSA at 22% bracket reduces take-home by about $3025.
What is the 2026 HSA contribution limit?+
For 2026, the HSA contribution limit is $4300 for self-only HDHP coverage and $8550 for family HDHP coverage. Plus a $1000 catch-up contribution for those age 55 or older. The limits are inflation-indexed annually by Treasury. To contribute, you must be enrolled in a qualified high-deductible health plan (HDHP) with no other disqualifying coverage. Source: IRS Revenue Procedure 2025-32 (HSA limits).
Does the FICA savings really matter?+
Yes, more than you would think. FICA is 7.65% on every dollar of wages (until you cross the $184,500 Social Security cap), so a $4,300 HSA contribution at the FICA savings is $329 of cash that you actually keep, on top of any federal income tax savings. Over a full career of HSA contributions, the FICA savings alone compounds significantly. The HSA is the only pre-tax deduction that gets the FICA exemption (via Section 125 cafeteria-plan rules); 401(k) contributions do not.
Can I contribute to an HSA outside payroll?+
Yes, but you lose the FICA savings. HSA contributions made via payroll deduction (Section 125 cafeteria plan) are exempt from federal income tax, FICA, and most state income taxes. HSA contributions made directly to your HSA bank (outside payroll) are deductible on your federal income tax return as an above-the-line deduction, but FICA was already withheld on the wages used to make the contribution. So payroll-deducted HSA contributions are roughly $329 more efficient per $4,300 vs direct deposit.
What can I spend HSA dollars on?+
Qualified medical expenses defined in IRS Publication 502: doctor visits, prescriptions, dental, vision, COBRA premiums, certain Medicare premiums after age 65, and many other medical costs. Over-the-counter medications became eligible after 2019 (CARES Act). Non-medical withdrawals before age 65 face a 20% penalty plus regular income tax. After age 65, non-medical withdrawals are taxed as ordinary income (no penalty), which makes HSA function as a 'medical IRA.' Many savers max HSA, never spend it, invest the balance, and use it tax-free for medical bills in retirement.
Is HSA better than 401(k)?+
For its triple-tax-free property, HSA is the most tax-efficient account in the US tax code: contributions reduce income tax AND FICA (unlike 401(k)), growth is tax-free (like Roth), and qualified withdrawals are tax-free (like Roth). The catch: HSA dollars must be used for qualified medical expenses to retain tax-free withdrawal status (until age 65). Standard advice from financial planners: capture full 401(k) employer match first, then max HSA, then go back and max 401(k). The HSA's combined federal income tax + FICA + tax-free growth typically beats traditional 401(k) on a dollar-for-dollar comparison.
What if I do not have an HDHP?+
You cannot contribute to an HSA without HDHP coverage. The 2026 minimum HDHP deductibles are $1,650 self-only and $3,300 family. The maximum out-of-pocket limits are $8,300 self-only and $16,600 family. Many employer-sponsored HDHPs meet these requirements automatically; some do not. If your employer offers both HDHP and traditional health plans, the HDHP is often the better choice for healthy people who can take advantage of the HSA. For people with high expected medical expenses, the lower premiums of HDHP combined with HSA savings still often wins financially, though the up-front out-of-pocket exposure is higher.