Not sure if you should choose the HSA for the next year or not? Try this free tool to help calculate the potential savings.
2027 HSA Checker
If you choose an HSA-eligible HDHP (High Deductible Health Plan), this tool calculates how much you could save. Answer the 9 questions below to see your estimated savings right away.
For 2027, the HSA contribution limit is $4,500 for self-only coverage and $9,000 for family coverage, plus an additional $1,000 if you are age 55 or older. This tool is for reference only.
Total amount you could save by choosing HSA/HDHP
Total Savings = Company Match + Payroll FICA Savings + Income Tax Savings + Health Premium Savings − FICA Savings on Greater Non-HDHP Premiums
Savings breakdown
Green bars add, red bars subtract, the white bar is total savings.
Note: FICA (SS & Medicare) tax savings vary depending on whether you are in the SS max wage zone or the additional Medicare tax zone. The default saving is 7.65%, but in some cases it may be 1.45% or 2.35%.
Results copied.
Calculation Logic
How this calculator turns your answers into the final savings figure, step by step, following the same calculation rules as the original Tally form.
Step 1 · Determine the FICA Type (Q2 Gross Wages)
- Gross Wages of $192,300 or less → FICA Type 1 (rate 7.65%)
- Gross Wages over $192,300 up to $200,000 → FICA Type 2 (rate 1.45%)
- Gross Wages over $200,000 → FICA Type 3 (rate 2.35%)
Step 2 · Allowable HSA Contribution Limit (Q3 Coverage + Q4 Age 55 or Older)
- Self-Only → $4,500 / Family → $9,000
- If age 55 or older (Yes), add $1,000 to the limit
- Room left to contribute:
Remaining = Limit − Employer Contribution (Q5) − Your Contribution (Q6) - If Remaining drops below 0, the over-contribution error is shown.
Step 3 · Tax Savings on Your Own Contribution (Q1 Bracket × Q6)
FICA Tax Savings = Your Contribution × FICA Rate (7.65% / 1.45% / 2.35% by Type)
Step 4 · Premium Savings (Q7 Frequency × Q8 and Q9 Premiums)
- Pay periods per year: Weekly 52 / Bi-weekly 26 / Semi-Monthly 24 / Monthly 12
HDHP Annual Cost = Q8 × Pay Periods Per Year,Other Plan Annual Cost = Q9 × Pay Periods Per YearHSA Premium Savings = Other Plan Annual Cost − HDHP Annual Cost(if the HDHP costs more, a warning is shown instead and the savings are $0)- Premiums are paid pre-tax through payroll, so a higher premium lowers taxable income more. Paying the higher non-HDHP premium would have cut payroll (FICA) tax by more, and that extra FICA saving is given up when you choose the HDHP:
NonHDHP Premium FICA Savings = Premium Savings × FICA Rate. It is therefore subtracted in the total below.
Step 5 · Total Savings
+ HSA Premium Savings − NonHDHP Premium FICA Savings
- The employer contribution (Q5) is not a tax saving, but it is money that lands in your HSA, so it is added to the total as-is.
- The NonHDHP Premium FICA Savings is subtracted, not added: because premiums are deducted pre-tax, the greater non-HDHP premiums would have lowered taxable income (and therefore FICA tax) by more. Choosing the HDHP means giving up that extra FICA saving, so it counts against the total.
- State income tax savings are not included in this calculation.
