The 2020 Form W-4 is very different from previous versions. This is due to the federal tax law changes that took place in 2018. The Internal Revenue Service (IRS) is not requiring all employees to complete the revised form and has designed the withholding tables so that they will work with both the new and prior year forms.
Employees required to use the new form:
- Those hired in 2020
- Anyone who makes withholding changes during 2020.