What is a form that shows how much you earned and how much your employer withheld for taxes?

The form that shows how much you earned and how much your employer withheld for taxes is the W-2 form. Employers are required to provide this form to employees by January 31 each year, detailing annual wages and the total amount withheld for federal, state, and other taxes. This information is essential for employees when filing their income tax returns.