What type of information does Form W-4 contain?

Form W-4, also known as the Employee's Withholding Certificate, is primarily utilized to communicate tax-related information to an employer. This form allows employees to specify the amount of federal income tax withholding from their paychecks based on their personal circumstances, such as marital status and the number of allowances or dependents they wish to claim.

The information captured on a W-4 directly influences the amount of taxes withheld and serves to ensure that appropriate tax amounts are collected throughout the year. Therefore, the correct context for this form is tax information, as it assists in determining the employee's tax liabilities, rather than includes details such as employment history, medical information, or financial information.