Form W-4 is a tax form used by employees in the United States. Its purpose is to tell your employer how much federal income tax should be removed from your paychecks. You provide details like filing status, allowances, and any extra amount you want to withhold. This helps your employer determine the right amount to deduct for federal taxes. It's a good idea to review and update your Form W-4 each year or whenever your personal or financial situation changes to ensure the withholding is accurate.

The W-4 form provides your employer with information to determine how much federal income tax to withhold from your paychecks. Correct withholding ensures timely tax collection by the IRS. Paying too little can lead to tax bills and penalties, while paying too much results in a refund but lower take-home pay. After completing the W-4, your employer withholds the appropriate amount, contributing to your annual income tax bill when filing your return the following year. Balancing it right helps avoid underpaying or overpaying taxes.