HSA Tax Savings Calculator

Adjust the inputs below. Results update as you type.

How it works

HSAs can reduce taxable income when contributions are eligible and the account is paired with a qualifying high-deductible health plan. Model annual contribution room, employer deposits, and a rough marginal tax rate to see the tax-savings order of magnitude. Investment growth and qualified medical withdrawals have additional rules that this simplified view may omit. Contribution limits and catch-up amounts change by year. Verify HDHP eligibility and IRS limits before treating a projection as a funding plan.

Input guidance

Use realistic rates from lender or provider quotes instead of headline averages.
Model conservative, baseline, and optimistic scenarios before deciding.
Include recurring real-world costs (fees, taxes, insurance, maintenance) where relevant.

More examples to test

Conservative case: use a higher interest rate and lower growth assumptions to stress-test affordability.
Optimistic case: use a lower rate with stable income assumptions to compare upside potential.

How to interpret results

Treat this as a planning model, not a final approval tool. Compare at least two scenarios and focus on total-cost and cash-flow trade-offs.

When this can be inaccurate

Results can diverge due to fees, changing rates, tax rules, lender policies, and behavior changes that simplified models cannot fully capture.

Sources

Change history

July 2026: Quality-reviewed for publication with formula checks and explanatory copy updates.

Site-wide corrections also appear on the corrections log.

HSA contributions are triple tax-advantaged: tax-deductible going in, grow tax-free, and withdrawals for medical expenses are tax-free.

Annual contribution ($)

Coverage

Your age

Federal marginal rate (%)

State income tax rate (%)

Current HSA balance ($)

Years to grow

Investment return (%)

Annual tax savings: $1,490
Federal tax saved: $946
State tax saved: $215
FICA saved (7.65%): $329
Tax savings over 20yr: $29,799
Projected HSA balance: $182,943

2026 limits: $4,400 self / $8,750 family (+$1,000 catch-up at 55+). Requires HDHP enrollment. After 65, HSA withdrawals for non-medical expenses are taxed as income (like a traditional IRA) but not penalized. Not tax advice.

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Frequently asked questions

How should I use this result?+

Treat it as a planning estimate. Compare at least two realistic scenarios, then confirm with statements, quotes, or a qualified professional before acting.

How often should I refresh assumptions?+

Refresh whenever rates, income, costs, or policy limits change materially, and before making irreversible commitments.

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