If you have a business, you may need to fill out IRS Form W-9 Fact checked by Suzanne Kvilhaug Form W-9 from the Internal Revenue Service (IRS), Taxpayer Identification Number and Certification, is ...

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 ...

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 ...

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) ...