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HSA Calculator (US)

Project your Health Savings Account balance from contributions, employer contributions, and investment return — with the IRS contribution limit and an estimate of the income tax you save along the way.

years old
years old
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Determines the IRS contribution limit

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Capped automatically at the IRS limit for your coverage type and age

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Used to estimate the tax saving on your contributions

Balance at Target Age
$404,431
Total Tax Savings
$29,280
Total Growth
$262,431
Your contribution plus employer contribution exceeds the IRS annual HSA limit for your coverage type and age — it has been capped automatically.
Contributing $4,400 a year, plus an employer contribution of $500, from age 35 to 65 projects to a balance of $404,431. Because HSA contributions reduce your taxable income, you also save an estimated $29,280 in income tax along the way — on top of tax-free growth and tax-free withdrawals for qualified medical expenses.
Balance at Target Age$404,431

Year-by-Year Projection

HSA balance projection by age, including contributions and growth
AgeYour ContributionEmployer ContributionGrowthEnding Balance
36$3,900.00$500.00$564.00$9,964.00
37$3,900.00$500.00$861.84$15,225.84
38$3,900.00$500.00$1,177.55$20,803.39
39$3,900.00$500.00$1,512.20$26,715.59
40$3,900.00$500.00$1,866.94$32,982.53
41$3,900.00$500.00$2,242.95$39,625.48
42$3,900.00$500.00$2,641.53$46,667.01
43$3,900.00$500.00$3,064.02$54,131.03
44$3,900.00$500.00$3,511.86$62,042.89
45$3,900.00$500.00$3,986.57$70,429.47

Why an HSA is unique

An HSA combines the tax deduction of a Traditional IRA, the tax-free growth of a Roth IRA, and tax-free withdrawals — but only for qualified medical expenses. Because money never expires, many savers treat their HSA as a long-term investment account rather than spending it year to year.

For example, contributing $4,400 a year (the 2026 self-only limit) plus a $500 employer contribution from age 35 to 65, growing at 6% a year, reaches $404,431 — including $29,280 in estimated income tax saved on contributions alone.

Frequently asked questions

What is the 'triple tax advantage' of an HSA?

Contributions are tax-deductible (or pre-tax through payroll), the balance grows tax-free, and qualified medical withdrawals are also tax-free. No other US account offers all three tax benefits at once.

What are the 2026 HSA contribution limits?

For 2026, the IRS limit is $4,400 for self-only HDHP coverage and $8,750 for family coverage, plus an extra $1,000 catch-up contribution if you're 55 or older. Employer contributions count toward this limit.

What happens to unused HSA money — does it expire?

No — unlike a Flexible Spending Account (FSA), HSA funds never expire and roll over indefinitely. Many people invest their HSA balance and let it grow for decades, using it as a supplemental retirement account.

Can I use HSA funds for non-medical expenses?

Yes, but before age 65 non-medical withdrawals are taxed as income plus a 20% penalty. After age 65, non-medical withdrawals are taxed as income only (no penalty) — similar to a Traditional IRA.

Do I need a High-Deductible Health Plan (HDHP) to contribute?

Yes — you can only contribute to an HSA while enrolled in an HSA-eligible HDHP. You can keep and use the money even if you later switch to a non-HDHP plan, but you can't make new contributions during that time.