Payroll Services

2015 Federal Withholding Tax Calculator

Before starting, take a moment to print a copy of your latest Earnings Statement or Paycheck stub so you can easily enter the most accurate values into the calculator.

Total Gross Earnings per Paycheck:
*Key figures in dollars and cents. (No commas)
Please complete or results will be distorted.
# of Withholding Exemptions:
*Each semi-monthly exemption is worth: $ 164.60
Please complete or results will be distorted.
Additional Dollar Amount:
Marital Status:
Married, but withhold at higher Single rate.
NRA written on W4 form: Yes: No:

LESS Tax Deferred Amounts Per Paycheck:

  • Pre-tax parking
  • Dependent care
  • Medical insurance premium
  • Retirement reductions
  • Flexible spending account
  • Supplemental retirement account



W4 - 2015 Federal Withholding Tax Form PDF format 2 pgs 114KB

Related Employee Tax Rates:

OASI/Social Security 6.20% up to $113,700 for 2013
Medicare 1.45% no maximum
PERS Plan I 6.00%
PERS Plan II 4.64%
PERS Plan III 5% to 15%
TRS Plan I 6.00%
TRS Plan II 4.69%
TRS Plan III 5% to 15%
LEOFF Plan II 8.46%
TIAA/CREF 5.00%, 7.50%, or 10.00%
Payroll Services, PO Box 641024, Washington State University, Pullman WA 99164-1024, 509-335-9575, Contact Us