How to read your paycheck tax percentage
The headline percentage is the estimated total of federal income tax, employee Social Security and Medicare, and modeled state income tax divided by gross pay. It is an effective paycheck tax rate—not your marginal federal bracket.
The take-home share is calculated after both taxes and the selected traditional 401(k) contribution. Because retirement contributions are savings rather than taxes, the calculator displays them separately.
Example
If gross pay is $3,000, estimated taxes are $600, and a 401(k) contribution is $150, then 20% goes to taxes, 5% goes to retirement, and 75% remains as take-home pay. Insurance and other employer deductions would reduce the actual deposit further.
Taxes versus paycheck deductions
| Usually a tax | Usually a non-tax deduction |
|---|---|
| Federal income tax, state/local income tax, Social Security, Medicare | 401(k), health insurance, HSA/FSA, union dues, garnishments |
Frequently asked questions
What percentage of my paycheck goes to taxes?
There is no universal percentage. It depends on gross pay, filing status, W-4 entries, pay frequency, state and local rules, and pre-tax deductions. The calculator separates estimated taxes from deductions.
Is everything taken out of my paycheck a tax?
No. Federal and state income tax, Social Security, and Medicare are taxes. A 401(k), insurance premium, HSA contribution, garnishment, or union dues may reduce the check but are not all taxes.
Why is my tax percentage lower than my tax bracket?
A marginal bracket applies only to the income inside that bracket. Your effective tax rate divides total estimated tax by gross pay and is normally lower than your top marginal rate.
Does the calculator show exact payroll withholding?
No. It is a planning estimate. Actual withholding can differ because of payroll methods, local taxes, state-specific elections, benefits, credits, and multiple jobs.