Free Tools · Wealth

HSA Calculator

Enter your coverage, what you and your employer put in, and your tax bracket. See the tax you save this year and what your HSA could grow to.

Tax Year

Your Numbers

Type It All

Describe your situation in one sentence. For example: “Family coverage, I'm 45 in Texas, earn 120k, 22 percent bracket, putting 6,000 a year in through payroll, employer adds 1,500, I spend 2,000 on medical, return of 6 percent, for 20 years”

I couldn't match that to the fields below. Try naming the amounts, like the example, or fill them in directly.

HDHP Coverage

Family means the plan covers you and at least one other person.

Your Age

55 or older by year end adds a $1,000 catch-up.

Your Yearly Contribution

$

Capped at the year's limit, less what your employer puts in.

Employer Contribution

$

Counts toward the same yearly limit.

Contribute Through Payroll

Pre-tax through a workplace cafeteria plan also skips Social Security and Medicare tax. Direct contributions don't.

Yearly Wages or Income

$

Used for the state tax and Social Security and Medicare savings.

Filing Status

Federal Tax Bracket

%

Your top federal rate: 10, 12, 22, 24, 32, 35 or 37%.

State

Current HSA Balance

$

Medical Costs Paid From the HSA (Yearly)

$

Qualified costs you'd pay from the account each year.

Yearly Return

%

Many HSAs let you invest the balance above a cash minimum.

Years to Project

yrs

Your Results

Tax Savings This Year

$1,305

On $4,400 of your own contributions: $968 federal income tax, $337 Social Security and Medicare.

2026 Limit

$4,400

self-only

Balance in 20 Yrs

$106,678

After $30,000 of medical costs

If Fully Invested

$161,857

Medical costs paid out of pocket

HSA Balance by Year

How It Adds Up

2026 limit (self-only): $4,400
Employer contributionTax-free to you; counts toward the limit: $0
Your contributionRoom left: $0: $4,400
Federal income tax saved22% bracket: $968
Social Security and Medicare savedThrough a payroll cafeteria plan: $337
State income tax savedTexas: no state income tax saved at this income.: $0
Tax savings this year: $1,305

The triple tax advantage: money goes in before tax (or is deducted), grows without tax on interest or gains, and comes out tax-free for qualified medical expenses. Before 65, other withdrawals are taxed plus a 20% additional tax; from 65they're just taxed as income, like a traditional IRA. Saved receipts let you reimburse yourself for past medical costs later.

HDHP rules: you can contribute only while covered by a high-deductible health plan and not enrolled in Medicare. For 2026, the plan's deductible must be at least $1,700 self-only or $3,400 family, with out-of-pocket costs capped at $8,500 and $17,000. For 2025: $1,650 / $3,300 deductible, $8,300 / $16,600 out-of-pocket.

Contributions for 2026 can be made until April 15, 2027. The projection holds contributions, costs and returns flat. Estimates only: if you're self-employed, an S-Corp owner, or covered by a spouse's plan too, the rules change, so talk to us.

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Your HSA Results

A one-page PDF of this year's tax savings, your limit and the growth projection.

The 2026 Health Savings Account (HSA) Guide

Who qualifies, how much you can put in, and how to use an HSA as a long-term savings account.

HSA Contribution Deadline

A calendar reminder for the April 15, 2027 deadline to fund your 2026 HSA.

Written by Zi · Reviewed by the Zentavos TeamLast Updated October 23, 2026How We Research

In Short

For 2026 you can put $4,400 in an HSA with self-only coverage or $8,750 with family coverage, plus $1,000 at 55 or older, employer money included ^[1]. At a 22% federal bracket, $4,400 through payroll saves about $1,305 this year: $968 of income tax and $337 of Social Security and Medicare tax. The money grows tax-free and comes out tax-free for medical costs ^[3].

How to Use the HSA Calculator

Pick self-only or family coverage and enter your age (55+ adds a $1,000 catch-up).
Enter what you and your employer put in, and whether yours goes in through payroll.
Enter your wages, filing status, federal bracket and state to see this year's tax savings.
Add your balance, the medical costs you'd pay from the HSA, a return and the years to project. Or tap Say It All: “Family coverage, I'm 45 in Texas, earn 120k, 22 percent bracket, putting 6,000 a year in through payroll, employer adds 1,500, I spend 2,000 on medical, return of 6 percent, for 20 years.”

The Formula

Your contribution is capped at the year's limit less your employer's. Contributions are deducted (or excluded from pay), so the saving is the tax you'd otherwise pay on that money ^[3].

Your room = limit for your coverage (+ $1,000 at 55+) − employer contribution
Federal saving = your contribution × federal bracket
Payroll saving = your contribution × 7.65% Social Security and Medicare (Social Security only up to the wage base)
State saving = state tax on your income − state tax on income less the contribution (none in CA and NJ)
Each year: balance × (1 + return) + you + employer − medical costs paid from the HSA

Worked Examples

Scenario	Inputs	Result
Self-only, age 40, $4,400 through payroll, Texas	2026 · 22% bracket · $85,000 wages	Saves $1,304.60 ($968 federal + $336.60 FICA) · $106,678 in 20 years with $1,500/yr of medical costs, $161,857 if those are paid out of pocket (6%)
Family, age 45, $6,000 + $1,500 from the employer, Texas	2026 · 22% bracket · $120,000 wages · $2,000/yr medical	Saves $1,779 this year · $202,321 in 20 years (6%)
Self-only, $4,400 paid directly, California	2026 · 22% bracket	Saves $968 federal only: no FICA saving outside payroll, and California taxes HSA contributions
Family, age 56, $9,750 through payroll, Georgia	2026 · 24% bracket · $150,000 joint wages	Saves $3,572.40 ($2,340 federal + $745.88 FICA + $486.52 state)

Illustrative examples, not projections. Figures use the tax year shown and the assumptions above.

What Is the HSA Triple Tax Advantage?

A health savings account is taxed three good ways. Contributions are deductible, or excluded from your pay when made through an employer's cafeteria plan. The balance grows without tax on interest or gains. And withdrawals for qualified medical expenses are tax-free ^[3].

Through payroll, contributions also skip Social Security and Medicare tax, a further 7.65% for most employees ^[3]. Contributions you make directly are deducted on your return but don't get back FICA tax.

Withdrawals for anything else are taxed, plus a 20% additional tax before age 65. From 65 the additional tax goes away, so non-medical withdrawals are taxed like a traditional IRA's ^[3].

What Are the 2026 HSA Contribution Limits?

$4,400 for self-only coverage and $8,750 for family coverage, up from $4,300 and $8,550 in 2025 ^[1]^[2]. At 55 or older you can add $1,000 ^[3]. Everything counts toward the limit: your money, your employer's and anyone else's.

You can contribute for a year until the tax-filing deadline: April 15, 2027 for 2026 ^[3].

Who Can Contribute to an HSA?

You need to be covered by a high-deductible health plan (HDHP), have no other disqualifying health coverage, not be enrolled in Medicare, and not be claimed as someone's dependent ^[3].

For 2026 an HDHP has a deductible of at least $1,700 (self-only) or $3,400 (family), and out-of-pocket costs of no more than $8,500 or $17,000 ^[1]. For 2025: $1,650 / $3,300 and $8,300 / $16,600 ^[2].

Do States Tax HSA Contributions?

Most states with an income tax follow the federal deduction. California and New Jersey don't: California adds HSA contributions back on Schedule CA and taxes the account's earnings each year ^[4], and New Jersey's list of allowed deductions doesn't include HSAs ^[5]. The calculator gives no state saving in those two states.

States with no income tax on wages give no state saving either. City and county taxes aren't included.

Frequently Asked Questions

How much can I put in an HSA in 2026?

$4,400 with self-only coverage or $8,750 with family coverage, plus $1,000 if you're 55 or older. Employer contributions count toward the limit ^[1]^[3].

How much tax does an HSA save?

Your contribution times your federal bracket, plus 7.65% for Social Security and Medicare if it goes in through payroll, plus state tax in most states. $4,400 at a 22% bracket through payroll saves about $1,305 in a state without income tax.

What is the minimum deductible for an HSA-eligible plan in 2026?

$1,700 for self-only coverage and $3,400 for family coverage, with an out-of-pocket maximum of $8,500 and $17,000 ^[1].

What happens to my HSA when I turn 65?

The money is still tax-free for medical costs. Other withdrawals are taxed as income but no longer face the 20% additional tax. Once you enroll in Medicare you can't contribute any more ^[3].

What is the deadline for 2026 HSA contributions?

April 15, 2027, the tax-filing deadline for 2026 ^[3].

Does California tax HSA contributions?

Yes. California doesn't follow the federal HSA deduction, so contributions and the account's interest and dividends are taxed for state purposes ^[4]. New Jersey doesn't allow the deduction either ^[5].

Sources

Rev. Proc. 2025-19: 2026 HSA contribution limits and HDHP deductible / out-of-pocket limits — Internal Revenue Service
Rev. Proc. 2024-25: 2025 HSA contribution limits and HDHP deductible / out-of-pocket limits — Internal Revenue Service
Publication 969, Health Savings Accounts and Other Tax-Favored Health Plans — Internal Revenue Service
2025 Instructions for Schedule CA (540), California Adjustments (HSA deduction: California does not conform) — California Franchise Tax Board
Gross Income Tax overview: deductions New Jersey allows — NJ Division of Taxation

Official sources only: the IRS, SSA, BLS and other government agencies. Read how Zentavos researches.