Instant HSA “Discount” Calculator
Combined tax avoided on HSA dollars (with payroll):
29.65%
(income tax + FICA 7.65%)
29.65%
(income tax + FICA 7.65%)
≈ $703.50 pay with HSA via payroll
You save ≈ $296.50 vs. paying with after-tax cash.
≈ $780.00 if funded outside payroll (income-tax only)
Saves ≈ $220.00; no FICA savings.
FICA = 6.2% Social Security (to the wage base) + 1.45% Medicare. State rules vary—this tool shows federal only.