The W-2 Form is an important tax document that employers in the United States provide to their employees. It reports the employee's annual wages and the amount of taxes withheld from their paychecks throughout the year. Employees use this form to file their income tax returns with the IRS. Each year, employers must send out W-2 Forms to their employees by January 31. The form includes details such as the employee's Social Security number, total earnings, and federal and state tax withholdings. This information helps ensure that employees accurately report their income and pay the correct amount of taxes.