Take-Home Pay Calculator Formula
Understand the math behind the take-home pay calculator. Each variable explained with a worked example.
Formulas Used
Annual Take-Home
net_annual = gross_annual - fica - federal_tax - state_tax - retirementMonthly Take-Home
net_monthly = (gross_annual - fica - federal_tax - state_tax - retirement) / 12Total Annual Deductions
total_deductions = fica + federal_tax + state_tax + retirementVariables
| Variable | Description | Default |
|---|---|---|
gross_annual | Gross Annual Salary(USD) | 60000 |
federal_rate | Effective Federal Tax Rate(%) | 12 |
state_rate | State Tax Rate(%) | 5 |
retirement_pct | 401(k) / Retirement Contribution(%) | 6 |
fica | Derived value= gross_annual * 7.65 / 100 | calculated |
federal_tax | Derived value= gross_annual * federal_rate / 100 | calculated |
state_tax | Derived value= gross_annual * state_rate / 100 | calculated |
retirement | Derived value= gross_annual * retirement_pct / 100 | calculated |
How It Works
How Take-Home Pay Is Calculated
Your take-home pay is the gross salary minus all deductions: federal income tax, state income tax, FICA (Social Security + Medicare), and retirement contributions.
Formula
Net Pay = Gross - Federal Tax - State Tax - FICA (7.65%) - Retirement
FICA includes Social Security (6.2%) and Medicare (1.45%), totaling 7.65% on wages up to the Social Security cap.
Worked Example
Annual salary of $60,000 with 12% federal rate, 5% state, 6% retirement.
- 01FICA = $60,000 x 7.65% = $4,590
- 02Federal tax = $60,000 x 12% = $7,200
- 03State tax = $60,000 x 5% = $3,000
- 04Retirement = $60,000 x 6% = $3,600
- 05Total deductions = $4,590 + $7,200 + $3,000 + $3,600 = $18,390
- 06Net annual = $60,000 - $18,390 = $41,610
- 07Net monthly = $41,610 / 12 = $3,467.50
Frequently Asked Questions
What is FICA tax?
FICA stands for Federal Insurance Contributions Act. It includes Social Security tax (6.2%) and Medicare tax (1.45%), totaling 7.65% of your gross pay. Your employer pays an equal amount.
What is an effective tax rate?
Your effective tax rate is the average rate you pay on all income after brackets and deductions. It is lower than your marginal (top bracket) rate because lower portions of income are taxed at lower rates.
Does retirement contribution reduce my tax?
Traditional 401(k) contributions are pre-tax, reducing your taxable income. Roth contributions are after-tax and do not reduce your current tax burden.
Ready to run the numbers?
Open Take-Home Pay Calculator