W-4 Form
All U.S. employees and employers need to understand IRS Form W-4.
Form W-4, Employee’s Withholding Certificate, determines the amount of federal tax an employer withholds from an employee's paycheck.
Every employee who receives a paycheck must complete Form W-4. It’s necessary to complete one when starting a new job. It’s a good idea to update it to reflect life changes like marriage or having children. Employees can also adjust their withholding for more precise tax management using Form W-4.
Proper completion helps ensure the right federal tax withholding, which affects year-end tax refunds or tax liabilities.
Learn more about Form W-4, employer and employee responsibilities, tips to filling it out, and answers to frequently asked questions in What is Form W-4.
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