how to read form w 2
w 2 forms include numbered and lettered boxes that an employer must fill out to reflect how much you earned and taxes withheld employees will receive separate w 2s for federal state and local taxes form w 2 is available on the irs website related tax documentsform w 4 is completed by employees when they start working for a company the employer uses the information to determine how much tax to withhold from paychecks the information on form w 4 or sometimes form w 9 helps track payroll tax withholding employer provided benefits and pre tax contributions to things like a 401 k retirement plan 4