HSA Contribution Calculator
Find your HSA contribution room and tax savings.
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Results update as you type.
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How it works
A Health Savings Account (HSA) offers a rare triple tax advantage — contributions are pre-tax, growth is tax-free, and qualified medical withdrawals are tax-free — and this calculator shows your remaining contribution room and the tax you would save by maxing it out. You enter the annual contribution limit for your coverage type, how much you have contributed so far, your marginal tax rate, and the months left in the year, and it returns your remaining room, the monthly amount needed to reach the limit, and the estimated tax savings. HSAs are available only with a qualifying high-deductible health plan. Contributing reduces your taxable income now, and because unused funds roll over year to year and can be invested, an HSA doubles as a powerful long-term savings vehicle for future medical costs, including in retirement. Many people contribute enough to cover expected medical spending, while savvy savers max out the account, pay current medical bills from other funds, and let the HSA grow invested for decades. Contribution limits are set annually and are higher for family coverage, with an extra catch-up amount for those 55 and older. Enter your limit, contributions, and tax rate to see your room and savings.
Room = limit − contributed; tax savings = room × marginal rate
The remaining room is the annual HSA contribution limit minus what you have already contributed. Multiplying that room by your marginal tax rate estimates the income tax you would save by contributing the rest, since HSA contributions are made with pre-tax dollars. Dividing room by months left gives the monthly amount to max out.
Source:IRS HSA rules (Publication 969)
We review all our tools from time to time to ensure accuracy.
Worked example
How to use this calculator
- 1
Enter your values
Enter annual contribution limit, contributed so far and marginal tax rate.
- 2
Adjust the options
Adjust months remaining if they apply — sensible defaults are already set.
- 3
Read your result
Remaining contribution room updates instantly as you type — no button to press.
Frequently asked questions
How much can I contribute to an HSA?
The IRS sets annual HSA contribution limits that differ for individual and family high-deductible plan coverage and rise slightly most years, with an extra catch-up amount if you are 55 or older. Enter your applicable limit here along with what you have already put in, and the calculator shows your remaining room for the year.
What is the HSA triple tax advantage?
HSAs are uniquely tax-favored: contributions are made pre-tax or are tax-deductible, the money grows tax-free if invested, and withdrawals for qualified medical expenses are also tax-free. No other common account offers all three. This makes an HSA both a way to pay for healthcare with untaxed dollars and a strong long-term savings tool.
How much tax will I save with an HSA?
Because contributions are pre-tax, you save your marginal tax rate on every dollar contributed. Contributing $3,000 at a 24 percent marginal rate saves about $720 in federal income tax, plus possible state tax savings. The calculator estimates this from your remaining room and tax rate, showing the immediate benefit of maxing out the account.
Do HSA funds expire at year end?
No. Unlike a Flexible Spending Account, HSA balances roll over indefinitely and belong to you even if you change jobs or health plans. Unused funds keep growing and can be invested, which is why many people treat the HSA as a long-term account, letting it compound for future medical costs, including in retirement.
Who is eligible for an HSA?
You must be enrolled in a qualifying high-deductible health plan and generally cannot have other disqualifying coverage, be enrolled in Medicare, or be claimed as a dependent. If eligible, you can open and fund an HSA. Because eligibility hinges on your health plan, confirm your plan qualifies before contributing to avoid tax complications.