Understand withholding tax: what it is, how it works, how W-4 forms control it, and how to check if you're withholding the right amount from your paycheck.
Withholding tax is the portion of your paycheck that your employer sets aside and sends directly to the government on your behalf. Think of it as a pre-payment toward your annual tax bill.
Every time you get paid, your employer withholds (holds back) a portion of your pay and sends it to: - IRS — for federal income tax - State tax authority — for state income tax (in 41 states) - Social Security Administration — for FICA taxes (Social Security + Medicare)
At the end of the year, you file a tax return to compare what was withheld against what you actually owe. The result is either a refund (over-withheld) or a balance due (under-withheld).
Published by the BestPaystubGen Editorial Team, covering paystubs, payroll compliance, federal and state taxes, W-2 forms, 1099 contractors, FICA, gross vs net pay, and IRS regulations updated for 2026.
This paystub generator is a simulation/mockup tool for personal record-keeping and verification purposes only.