Complete Form W-4 so that your employer can withhold the correct federal income tax from your pay. Give Form W-4 to your employer.Employees must fill out step 1 and step 5. As employers, state agencies and institutions of higher education must deduct federal income tax (FIT) from the wages of a state officer or employee. First, you'll fill out your personal information including your name, address, social security number, and tax filing status. El Formulario 1099 consta de una serie de documentos a los que el IRS (Servicio de Impuestos Internos) se refiere como "declaración informativas". El Formulario 1099 consta de una serie de documentos a los que el IRS (Servicio de Impuestos Internos) se refiere como "declaración informativas". Send payment within working days of the pay date. A W4 tells your employer how much tax to withhold from your paycheck when you start a new job, but you can adjust it any time.