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Form W-4
Form W-4 paystub meaning: The IRS form you give your employer that sets your federal income tax withholding — since 2020 it uses dollar amounts, not allowances.
The IRS form you give your employer that sets your federal income tax withholding — since 2020 it uses dollar amounts, not allowances.
Form W-4, Employee's Withholding Certificate, is the instruction sheet your employer's payroll system follows when deciding how much federal income tax to take out of each check. You hand it to your employer. You do not mail it to the IRS, although the form warns that "your withholding is subject to review by the IRS." The 2026 version, created 12/8/25, has five steps. Step 1, Enter Personal Information — name, address, Social Security number, filing status. Step 2, Multiple Jobs or Spouse Works. Step 3, Claim Dependent and Other Credits. Step 4, Other Adjustments. Step 5, Sign Here; the form is not valid unless signed. Only Steps 1 and 5 are required. Step 3 is where the dollars are: if your total income will be $200,000 or less ($400,000 or less filing jointly), you multiply qualifying children under age 17 by $2,200, other dependents by $500, and enter the total. Step 4(a) adds expected income that has no withholding of its own, 4(b) subtracts deductions beyond the standard deduction, and 4(c) adds a flat extra amount withheld each pay period. Step 2 matters more than people expect. With two jobs, each employer withholds as if its paycheck is your only income, so each applies the full standard deduction and the lowest brackets. Checking box 2(c) on both forms cuts the standard deduction and brackets in half for each job. Allowances are gone. Pre-2020 forms already on file stay valid, and you are not required to submit a new one merely because of the redesign. If you were first paid after 2019 and submitted nothing, you are treated as a single filer with no other adjustments. Nothing on a W-4 touches Social Security or Medicare.
Tax-form labels must be interpreted using the form for the correct year and its official instructions. A paystub draft is not a filed tax form and does not replace an employer, payer, payroll provider, or agency record.
When this term appears on a statement, read its label, current amount, year-to-date amount, pay-period context, and any adjacent rate or hours together. Resolve a mismatch with the original issuer or the cited authority rather than changing a record to force a preferred result.
Example
Two children aged 9 and 14, plus a dependent parent, on a $70,000 salary paid every two weeks. Step 3(a): 2 qualifying children under 17 × $2,200 = $4,400 Step 3(b): 1 other dependent × $500 = $500 Step 3 total entered on the form: $4,900 Payroll spreads that credit across the year's pay periods. With 26 biweekly checks: $4,900 ÷ 26 = $188.46 less federal income tax per check than the identical salary with Step 3 left blank. Add $50 in Step 4(c) and the two entries partly cancel: $188.46 − $50.00 = $138.46 net reduction per check. When the 14-year-old turns 17, that child leaves the $2,200 line and the arithmetic changes by $2,200 for the year — roughly $84.62 per biweekly check. That is exactly the kind of change the form asks you to come back for.
Source: IRS — About Form W-4, Employee's Withholding Certificate
Related terms
- Federal Income Tax (FIT) — A running prepayment of your federal tax bill, calculated from your W-4 and your pay frequency — an estimate, not the tax itself.
- Form W-2 — Your employer's year-end report of what it paid you and what it withheld — the boxes, not your salary, are what the IRS matches to your return.