HSA Calculator 2026
Maximize your Health Savings Account with IRS-current limits, tax savings, and investment growth projections.
HSA contribution limits for 2026 are $4,400 for self-only and $8,750 for family coverage per IRS Rev. Proc. 2025-19. The HSA is the only account with a triple tax advantage: contributions reduce taxable income, growth is tax-free, and qualified medical withdrawals are tax-free. A 24%-bracket filer maxing the self-only limit saves $1,056 in federal taxes alone. After 65, HSA funds convert to a flexible retirement account — making it one of the most powerful savings tools available.
How HSA Tax Savings Are Calculated
HSA tax savings come from three sources. The contribution deduction reduces your Adjusted Gross Income (AGI), saving federal and state income taxes at your marginal rate. If contributed through payroll (Section 125 plan), it also avoids FICA taxes. The money then grows tax-free in investments, and qualified withdrawals avoid all taxation.
| Variable | Definition |
|---|---|
| IRS Limit | $4,400 (self) / $8,750 (family) for 2026; +$1,000 catch-up at age 55+ |
| Prorated Limit | Annual limit × (eligible months ÷ 12) for mid-year HDHP enrollment |
| Federal Savings | Contribution × marginal federal tax rate (22%, 24%, 32%, 35%, or 37%) |
| State Savings | Contribution × state income tax rate (0% for TX, FL, etc.; up to 13.3% in CA) |
| Growth | FV = P(1+r/12)^(n×12) — same compound growth formula as Roth IRA, but tax-free for medical |
Example: A 40-year-old in the 24% federal bracket with 5% state tax, maxing the 2026 self-only HSA limit of $4,400, saves $1,056 federal + $220 state = $1,276 in taxes this year. Invested at 7% for 25 years, that $4,400 grows to $23,900 — all tax-free for medical expenses.
💡 Expert Pro-Tip
Invest Your HSA — Don't Just Let It Sit:93% of HSA holders keep funds in cash (earning ~0.01%), but 7% invest in index funds and earn 7–10% annually. The strategy: build a $3,000–$5,000 "medical deductible buffer" in cash, then invest everything above that threshold. Pay current medical expenses out-of-pocket using a rewards credit card — save every receipt. You can reimburse yourself from the HSA years later (no time limit!) while the invested HSA compounds. One family invested their HSA for 20 years and accumulated $180,000 in tax-free medical retirement funds. The IRS has no expiration date on HSA reimbursements.
HSA FAQ
What is the HSA contribution limit for 2026?
For 2026, the IRS HSA contribution limits (per Rev. Proc. 2025-19) are $4,400 for self-only High Deductible Health Plan (HDHP) coverage, and $8,750 for family coverage. If you're 55 or older, you can add a $1,000 catch-up contribution on top of these limits. All contributions — employer and employee combined — must stay under these annual caps.
What qualifies as an HDHP in 2026?
For 2026, an HDHP must have a minimum deductible of $1,650 (self-only) or $3,300 (family), and an out-of-pocket maximum of no more than $8,300 (self-only) or $16,600 (family). Your insurance card or plan summary will indicate if it's an HDHP-qualified plan. Most employer HDHPs are clearly labeled.
Can I have both an HSA and an FSA?
Not a regular FSA. If your employer offers a standard healthcare FSA, having one disqualifies you from HSA contributions. However, a Limited Purpose FSA (dental + vision only) or Dependent Care FSA can coexist with an HSA. This matters because FSAs have a "use it or lose it" rule while HSA funds roll over indefinitely.
Do all states recognize the HSA deduction?
No. California and New Jersey do not recognize HSA contributions as tax-deductible at the state level. Alabama has limited conformity. All other states with income tax conform to federal HSA rules. If you live in CA or NJ, your state tax savings in this calculator should be set to 0%.
What happens to my HSA if I stop having an HDHP?
You can no longer contribute new funds, but you keep all existing HSA funds. The balance rolls over indefinitely. You can spend it on qualified medical expenses tax-free at any time, regardless of your current insurance type. You just can't add new money until you re-enroll in an HDHP.
HSA Contribution Calculator 2026
Your HSA Details
2026 limit: $4,400
Counts toward your IRS limit
Tax & Growth
Your 2026 HSA Results
Triple Tax Advantage
20-Year Growth at 7% Return
Based on your results — what to do next:
See your full tax picture
Your HSA saves $1,276/yr in taxes. Calculate your total take-home after federal, state, and FICA to see how much more you can contribute.
Factor your HSA into retirement
After 65, HSA funds can be withdrawn for any expense (taxed like a 401k). Your projected $191,006 balance in 20 years is powerful retirement runway.
Max out 401(k) alongside your HSA
HSA + 401(k) is the ultimate tax-free combo. At 24% federal + 5% state, every dollar in both accounts saves you 29¢ today.