Paying with Tax-Free Dollars Feels Like a Discount on Medical Care
If you’re on an HSA-eligible high-deductible health plan, you don’t have to max out your HSA to benefit. Simply opening the HSA and contributing through payroll means the dollars you set aside for medical bills avoid not only federal income tax but also Social Security and Medicare (FICA) taxes under a Section 125 Premium-Only Plan.
Add those together and it can feel like a built-in discount on the care you’re already paying for. Even if you only contribute when a bill pops up, sending it through payroll first can meaningfully lower your out-of-pocket cost.
The calculator below shows how big that “discount” can be. Select your federal tax bracket, enter a medical amount, and compare the savings when you pay with HSA dollars via payroll versus funding your HSA outside of payroll (income-tax only). You can also try larger amounts to see the net effect of contributing more to your HSA over time.
Notes: State tax treatment can vary. FICA savings apply only to payroll contributions (up to the Social Security wage base). This is general information—check your employer’s plan and consult a tax professional for advice about your situation.