What Is Form W-9: Request for Taxpayer Identification Number (TIN) and Certification? Form W-9, Request for Taxpayer Identification Number (TIN) and Certification, is an Internal Revenue Service (IRS) ...

As a small-business owner, you may be thinking about outsourcing work to save time and expand your services. Before taking this step, make sure you ask contractors or companies to fill out a W-9 form.

A W-9 is an IRS form that independent contractors fill out to give businesses their tax ID number and personal information. Many, or all, of the products featured on this page are from our advertising ...

The IRS continues to roll out drafts of some 2026 tax forms, including a draft of Form W-9, Request for Taxpayer Identification Number and Certification. Here’s a look at what’s new—and why it matters ...

Kelly Phillips Erb is a Forbes senior writer who covers tax. You should be fine. Here's why. A form W-9 is used to provide your taxpayer identification number (such as your Social Security Number (SSN ...

IRS forms W-8 and W-9 serve distinct purposes in the tax system and are used by different groups to fulfill their tax obligations. A W-8 form is typically required ...