HSA Calculator
See what a Health Savings Account could do for you. Enter your yearly contribution, employer match, marginal tax rate, time horizon and expected return to estimate your immediate tax savings and the tax-free balance you could build.
How to use the HSA calculator
- Enter your yearly contribution and any employer contribution.
- Set your marginal tax rate, number of years and an expected annual return.
- Review the annual tax savings, projected balance and total tax saved.
Examples
Maxing a self-only HSA for 20 years
Contribution 4300/yr, employer 0, tax rate 24%, 20 years, 7% return
Annual tax savings 1032, total tax saved 20640, balance about 176281
Frequently asked questions
What is the triple tax advantage of an HSA?
Contributions are pre-tax, so they lower your taxable income now. The balance grows tax-free, so you owe nothing on interest or investment gains. And withdrawals for qualified medical expenses are tax-free too. No other account combines all three.
What are the 2025 HSA contribution limits?
For 2025 the IRS limit is 4300 for self-only coverage and 8550 for family coverage, including any employer contributions. If you are 55 or older you can add a 1000 catch-up contribution on top. This tool flags totals above those limits as a warning.
How is the tax saving calculated?
Your pre-tax contribution reduces your taxable income, so the immediate saving is your contribution multiplied by your marginal tax rate. For example, 4300 at a 24 percent rate saves 1032 in tax for that year.
Is this tax advice?
No. This is an educational estimate only, not tax, financial or legal advice. HSA rules, limits and eligibility depend on your health plan and situation, so confirm details with the IRS or a qualified professional before acting.
Do you store the numbers I enter?
No. The calculation runs entirely in your browser. Nothing you type is sent to a server or saved, so your contribution and income figures stay private on your device.
Does the projection account for withdrawals or inflation?
No. It assumes you contribute steadily and leave the balance invested to grow, with no withdrawals. The result is a nominal figure before inflation, so its future buying power will be lower than the number shown.
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