The W4 is a tax form used in the United States to indicate an employee's tax withholding preferences to an employer. This one-page form must appear on the first page of the document. Subsequent pages are ignored.

Supported versions: Variations from 2020 or newer.

Supported fields on this form:

• FirstName

• MiddleInitial

• LastName

• SSN

• Address

• City

• State

• Zip

• Single: True or false.

• Married: True or false.

• HeadOfHousehold: True or false.

• MultipleJobs: True or false.

• Step3Amount1

• Step3Amount2

• Step3Amount3

• Step4AmountA

• Step4AmountB

• Step4AmouontC

• EmployerNameAndAddress

• FirstDateOfEmployment

• EIN

• Year

Example: IRS Form W4