Form W-4, Employee's Withholding Allowance Certificate
Wondering how many withholding allowances to claim on your W-4? The IRS withholding calculator is a helpful tool for determining the correct amount of withholding allowances to claim.
The W-4 is used to claim withholding allowances. The W-4 form is a fillable PDF.
For more information on withholding, see IRS Publication 505, Tax Withholding and Estimated Tax (.pdf).