A W-4 is a form you give to your employer to tell the employer how much tax to withhold from your paychecks. Only the employer gets that form. It does not go to the IRS and does not dictate how you have to file your tax return.
A W-2 is the document you receive from your employer by the end of January, showing how much you earned and how much tax was withheld from your paychecks. You enter the information from your W-2 on your tax return to seek a refund or see how much you still owe to the IRS and/or state.
https://turbotax.intuit.com/tax-tools/calculators/w4/
https://www.irs.gov/individuals/tax-withholding-estimator
https://www.irs.gov/pub/irs-pdf/fw4.pd
https://turbotax.intuit.com/tax-tips/irs-tax-forms/what-is-a-w-2-form/L6VJbqWl5
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**
