Payroll Tax Calculator
Calculate employer and employee payroll taxes including federal Social Security, Medicare (FICA), Federal Unemployment (FUTA), and estimated State Unemployment (SUTA) taxes based on gross wages.
Formulas Used
Employee Social Security: min(Gross, max(0, $168,600 − YTD)) × 6.2%
Employer Social Security: Same as employee (employer matches 6.2%)
Employee Medicare: Gross × 1.45%
Employer Medicare: Gross × 1.45% (employer does not pay Additional Medicare)
Additional Medicare (Employee only): max(0, Gross − max(0, $200,000 − YTD)) × 0.9%
FUTA (Employer only): min(Gross, max(0, $7,000 − YTD)) × 0.6% (net after 5.4% credit)
SUTA (Employer only): min(Gross, max(0, SUTA Base − YTD)) × SUTA Rate
Total Employee FICA: SS + Medicare + Additional Medicare
Total Employer Payroll Tax: SS + Medicare + FUTA + SUTA
Assumptions & References
- Social Security wage base: $168,600 (2024, per IRS Notice 2023-75).
- Social Security rate: 6.2% each for employee and employer (IRC §3101, §3111).
- Medicare rate: 1.45% each for employee and employer (IRC §3101(b), §3111(b)).
- Additional Medicare Tax: 0.9% on employee wages exceeding $200,000 in a calendar year (IRC §3102(f)); employer does not match this tax.
- FUTA gross rate: 6.0%; net rate shown is 0.6% assuming the maximum 5.4% state unemployment credit (IRS Publication 15).
- FUTA wage base: $7,000 per employee per year (IRC §3306(b)(1)).
- SUTA rate and wage base vary by state and employer experience rating; defaults shown are common estimates. Verify with your state workforce agency.
- This calculator covers payroll taxes only. Federal and state income tax withholding, benefits deductions, and local taxes are not included.
- YTD (Year-to-Date) wages are used to correctly cap Social Security, FUTA, and SUTA taxable wages for the current pay period.
- Results are estimates for informational purposes. Consult a payroll professional or CPA for compliance.