Completion of the the W-4 Employee Withholding Certificate consists of five steps.
In Step 1 (c) of the W-4, you would check Head of Household if you are unmarried and pay more than half the cost of keeping up the home for yourself and your children.
If you have more than one job, you should complete Step 2.
In Step 3, you multiply your number of qualifying children under the age of 17 by $2,000 and enter the result.
And if you have Other income not from jobs; expect to claim itemized deductions instead of standard deduction; or want extra withholding you would complete Step 4.
Step 5 you sign the form.
If you just have the one job and dependents, you would only need to complete Steps 1, 3 and 5; and the withholding should be consistent with your annual tax liability.
If you have more than one job, or additional income for which there is not withholding, you may want to use the IRS Withholding Estimator to assist you in determining your withholding.
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