HSA Contribution Calculator — 2026 Limits & Tax Savings
Check your 2026 HSA contribution limit (including the 55+ catch-up and employer contributions) and see the tax you save. IRS Rev. Proc. data, free.
The HSA is the only account that is tax-free going in, growing, and coming out — but contribution limits are family-status dependent, and employer contributions count against your limit. This calculator checks your 2026 headroom (IRS Rev. Proc. figures: $4,400 self-only, $8,750 family, $1,000 catch-up at 55+) and your remaining room after employer seed money.
It also estimates the tax saved: federal income tax plus FICA (HSA contributions through payroll skip the 7.65% too — something a deduction at filing cannot do).
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HSA & FSA Tax Savings Calculator
Calculate your tax savings from HSA and FSA contributions — triple tax benefit: federal + FICA + state.
Invest like an IRA
After 65 = retirement $
Portable between jobs
Available immediately
No HDHP required
Not portable
Tax savings are estimates. The federal rate is your marginal bracket from the 2026 IRS tables after the standard deduction. FICA savings (7.65%) assume contributions are made through employer payroll (Section 125 cafeteria plan); contributions deducted on your 1040 instead do not avoid FICA. Your actual savings depend on your state's HSA/FSA tax treatment and eligibility. HSA requires a High Deductible Health Plan (HDHP). This is not tax advice.
Why the same dollar is worth more in an HSA than in an FSA
Both accounts are funded with pre-tax dollars, so each contribution dodges three separate taxes: federal income tax, FICA (Social Security + Medicare at 7.65%), and state income tax. That is the triple tax advantage. Where they diverge is what happens on 31 December: a health FSA is use it or lose it — unused money is forfeited to the employer — while an HSA balance rolls over indefinitely, can be invested, and becomes a retirement account after age 65. This calculator takes your income, subtracts the 2026 standard deduction ($16,100 single / $32,200 married), looks up your marginal federal bracket in the 2026 IRS tables, and applies that rate plus 7.65% FICA plus your state rate to every dollar you contribute, capping each contribution at the 2026 IRS limit: $4,400 self-only HSA, $8,750 family HSA, $1,000 catch-up at 55+, and $3,400 for the health FSA.
Top: each contributed dollar avoids federal + FICA + state tax — 32.65% at a 22% bracket and a 5% state rate. Bottom: the FSA column is clipped at the contribution amount every December 31 (the red slice is forfeited), while the HSA column carries the unspent balance forward and stacks year after year.
Dan is 42, files single, earns $85,000, and lives in a state with a 5% flat income tax. He has a self-only HDHP and is deciding how much to route through pre-tax health accounts this year.
- Marginal rate:$85,000 of wages minus the $16,100 standard deduction leaves $68,900 of taxable income — inside the 22% bracket of the 2026 IRS tables (single filers pay 22% between $50,400 and $105,700).
- Contributions:He enters $4,400 into the HSA field — exactly the 2026 self-only limit, so nothing is flagged as over the cap — and $1,500 into the health FSA field, well under the $3,400 ceiling.
- Federal:At his 22% marginal bracket, $4,400 x 22% = $968 avoided on the HSA, and $1,500 x 22% = $330 on the FSA.
- FICA:Contributing through a cafeteria plan also skips Social Security and Medicare: 7.65% x $4,400 = $336.60, plus $114.75 on the FSA.
- State:At his 5% state rate the HSA saves another $220 and the FSA another $75.
- Total:HSA savings come to $968 + $336.60 + $220 = $1,524.60; FSA savings to $330 + $114.75 + $75 = $519.75. The result panel shows $2,044 combined annual tax savings.
- The catch:The FSA tax savings are only worth keeping if Dan actually spends the full $1,500 by December 31 — anything left is forfeited. The $4,400 HSA balance rolls over untouched, so its $1,524.60 of savings compounds instead of expiring.
About this HSA contribution calculator
This page covers 2026 hsa limits family, hsa contribution limit 55 catch up, how much can i put in hsa, hsa tax savings calculator — all the same underlying task as HSA contribution calculator. The tool above is FreeToolHub's hsa fsa calculator embedded in full: every feature works right here, and nothing you process is uploaded to any server.
Frequently asked questions
What is the HSA contribution limit for 2026?
$4,400 for self-only HDHP coverage and $8,750 for family coverage, plus a $1,000 catch-up for anyone 55 or older (each spouse needs their own HSA to use their own catch-up). Employer contributions — including wellness rewards — count against your limit. Figures track IRS Rev. Proc. 2025-19.
Why is an HSA better than an FSA for tax savings?
Three reasons: HSA balances roll over year to year (FSAs are mostly use-it-or-lose-it), the money grows tax-free and can be invested, and after 65 you can withdraw for any purpose with only income tax — making it a stealth retirement account. FSA money must be spent within the plan year plus a short grace period.