What forms should an employer ask an independent contractor to fill out ?

If you’ve made the determination that the person you’re paying is an independent contractor, the first step is to have the contractor complete Form W-9 (PDF), Request for Taxpayer Identification Number and Certification. This form can be used to request the correct name and Taxpayer Identification Number, or TIN, of the worker. A TIN may be either a Social Security Number (SSN), or an Employer Identification Number (EIN). The W-9 (PDF) should be kept in your files for four years for future reference in case of any questions from the worker or the IRS. A penalty can be levied against you, the employer for omission of this information on certain forms.