Complete Form W-4 so that your employer can withhold the correct federal income tax from your pay. Complete Form W4 so that your employer can withhold the correct federal income tax from your pay.Learn stepbystep instructions on how to fill out a W4 form, whether you're single, married, or filing jointly. Demystify the W-9 form: learn its purpose and how to complete it correctly to ensure your suppliers and vendors are staying tax-compliant. In this video we're going to learn how to fill out form w-4. Learn how to complete Form W-8ECI and claim U.S. tax exemptions for foreign entities. Step-by-step article to accurate tax withholding compliance. Sample. Officer's Certificate. Any amounts the caterer pays to hire temporary help to work as cooks, bartenders, or wait staff are not taxable. All temporary programs and prevailing wage requests (for both PERM and temporary programs) must be submitted through the FLAG System.