The following are commonly used tax forms that you may need individually or for your business.  Click on the link to go to the form.  You may need Adobe Acrobat Reader to open some of these forms. Form SS-4, Application for Employer Identification Number You can obtain an employer identification number instantly by completing the application online. SS-4 online application site SS-4 form  (blank copy) Form DR-1, Application to Collect and/or Report Sales/Use and/or Unemployment Tax in Florida DR-1 Online application site DR-1 form (blank copy) Form W-4, Employee's Withholding Allowance Certificate W-4 form (blank copy) Form W-9, Request for Taxpayer Identification Number and Certification W-9 form (blank copy)   For other Federal forms, click here to go to the IRS website. For other Florida forms, click here to go to the Florida Department of Revenue website.