Why the HSA Beats Both a 401(k) and a Roth IRA
A Health Savings Account (HSA)—available when enrolled in a qualifying High-Deductible Health Plan (HDHP)—is the only account in the U.S. tax code with three simultaneous tax exemptions:
- Tax-Free Contributions: Contributions (up to $4,300 individual / $8,550 family in 2025/2026) reduce your federal and state taxable income—and when contributed via employer payroll deduction, they also bypass the 7.65% FICA (Social Security & Medicare) tax, which even a 401(k) does not avoid!
- Tax-Free Compounding: Invested HSA funds (in S&P 500 index funds at Fidelity HSA) grow with zero annual dividend or capital gains drag.
- Tax-Free Withdrawals (The Shoebox Strategy): Withdrawals for qualified medical expenses are 100% tax-free at any age, and there is no deadline to reimburse yourself—allowing you to pay out-of-pocket today, save digital receipts, let your HSA compound for 25 years, and reimburse yourself tax-free in retirement.