Form W-9 is a simple IRS tax form, but mistakes can cause delays and withholding. Learn when you need it and how to fill it out.

Employers complete form W-2 annually to report employee earnings and tax withholdings. Employees complete form W-4 when starting a new job to tell employers how much to withhold from their paychecks.

Once you’ve clicked “file” or dropped your tax return in the mail, use this form to provide the IRS with updated information Written By Written by Contributor, Buy Side E. Napoletano is a contributor ...

Compare tax relief providers that match your needs. Find Tax Experts Reduce your tax burden now You’re probably familiar with tax returns on some level, but if you’ve never filed a tax return, you may ...

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 ...