HSA vs. FSA — The Triple-Tax Playbook
The Health Savings Account is the only US tax vehicle with a pre-tax contribution, tax-free growth, and tax-free qualified withdrawal. The FSA is a one-year cash-flow tool. They solve different problems.
Last reviewed by UseYourCredit editorial team.
Who qualifies for an HSA
Anyone enrolled in an IRS-qualified High-Deductible Health Plan (HDHP) who is not otherwise covered by non-HDHP insurance and not enrolled in Medicare. 2026 contribution limits are $4,300 self / $8,550 family with a $1,000 age-55 catch-up.
The stealth retirement move
Pay small medical costs from cash flow, keep the receipts, and let the HSA compound in low-cost index funds. Qualified expenses can be reimbursed years later — tax-free. After age 65, non-medical withdrawals are taxed like a traditional IRA. Model the compounding gap in the HSA Triple-Tax Advantage Calculator.
When the FSA still wins
FSAs let you contribute up to $3,300 (2026) pre-tax and access the full annual amount on January 1 — useful for a known upcoming expense (braces, LASIK, planned surgery). Unused balances above the $660 carry over are forfeited.