Form W-9 for Businesses If your business, company or institution needs the IRS Form W-9 with your name, address, and taxpayer identification number you may apply for IRS Form W9 with your employer, employer's corporation, LLC, or other business. If you are a business owner, you can register to receive free IRS Form W9. For more information on the forms, please visit the IRS Forms Registration page. Form W-9 for Self Employed Individuals (W-3) The IRS Form W-9 for Self-Employed Individuals, Employer W-3, is designed in cooperation with the Alabama Department of Revenue's (FOR) Office of Business and Economic Development to assist employers that need tax information for tax reporting to employers.