W-9 vs W-8BEN: Freelancer Tax Forms Explained

Why Clients Ask for a Tax Form

Before a company pays a contractor, its accounting team needs to know how to report the payment to tax authorities. That is why a client often asks you to complete a tax form before your first invoice is paid. The right form depends on where you live and where the work is performed.

The W-9: For US Persons

A W-9 is used by US citizens, residents, and US-based businesses to give a client their taxpayer identification number. The client uses it to issue a 1099 at year end. You can read the official instructions on the IRS Form W-9 page.

The W-8BEN: For Non-US Persons

If you are a non-US freelancer working with a US client, you typically complete a W-8BEN instead. It certifies your foreign status and can reduce withholding under a tax treaty. See the official IRS Form W-8BEN page for details.

W-9 vs W-8BEN at a Glance

Factor	W-9	W-8BEN
Who files it	US persons and businesses	Non-US individuals
Purpose	Provide a US taxpayer ID	Certify foreign status
Year-end form	Client issues a 1099	Client may issue a 1042-S
Treaty benefits	Not applicable	May lower withholding

How This Affects Your Invoices

Submitting the correct form up front prevents payment delays and avoids over-withholding. Keep a signed copy with your records alongside every invoice you send, and refresh a W-8BEN when it expires. New to invoicing? Start with our step-by-step freelance invoice guide.

This article is general information, not tax advice. Consult a qualified professional for your situation.