HSA Calculator

2026 rules

See how much an invested HSA can grow and what it saves you compared with a taxable account.

Your numbers

HDHP coverage

Yearly contribution

Years to invest

Yearly return

Your income tax rate (federal + state)

Contributing through payroll (skips 7.65% FICA)

Result

HSA after 20 years$341,186

2026 limit for your coverage$8,750
Your contribution$8,750
Tax saved up front each year$3,032
HSA balance (tax-free for medical costs)$341,186
Same money in a taxable account$200,831
HSA advantage$140,355

After 65 you can withdraw for anything; non-medical withdrawals are taxed like a traditional IRA but without the 20% penalty.

How it works

HSA contributions are deductible (and skip FICA when made through payroll), growth is untaxed, and withdrawals for medical costs are tax-free. The 2026 limits are $4,400 for self-only coverage and $8,750 for family, plus $1,000 at 55 or older.

You can pay medical bills out of pocket now and reimburse yourself from the HSA years later, as long as you keep the receipts. That lets the account grow longer.

2026 figures: SSA 2026 COLA fact sheet; CMS 2026 Medicare Parts A & B premiums and deductibles; IRS Rev. Proc. 2025-19 (2026 HSA limits).

Questions

What happens to an HSA at 65?

You can withdraw for any reason without the 20% penalty. Non-medical withdrawals are taxed as income, like a traditional IRA.

Can I keep contributing after I enroll in Medicare?

No. Contributions stop the month Medicare starts, and Part A can be backdated up to six months when you sign up late.