What is IRS W-9 form?

The IRS W-9 form is a tax document used in the United States by individuals and entities to provide their taxpayer identification information, such as a Social Security Number (SSN) or Employer Identification Number (EIN), to others who are required to report income paid to them. It is commonly used by freelancers, contractors, and vendors to furnish their information to businesses that will issue them a 1099 form for tax reporting purposes. The W-9 form helps ensure accurate tax reporting and compliance with IRS regulations.