W-8BEN vs W-9: Which Form Do You Actually Sign?

Written by CA Sumit ChandwaniChartered Accountant & Founder · Reviewed by Minal Bihani, EA

These two forms answer one question for the payer: are you a US person or not?

• W-9 — signed by US persons (citizens, residents, US entities). It certifies your taxpayer ID so the payer can report what they paid you.
• W-8BEN — signed by non-resident individuals. It certifies foreign status and claims tax-treaty benefits.
• W-8BEN-E — the entity version, for foreign companies.

Why the payer cares

US payers must withhold 30% on many payments to foreign persons unless a valid W-8 says otherwise. With no form on file, they withhold at the maximum. The form is your only lever to reduce that.

Where treaties come in

The W-8BEN has a treaty section. If your country has a tax treaty with the US, quoting the right article can cut withholding on royalties, dividends or services — sometimes to zero. Get the article wrong and you either overpay or under-withhold.

The traps

The common mistakes: non-residents signing W-9s because a platform pushed it (that's certifying you're a US person under penalty of perjury), forgetting a W-8BEN expires after roughly three calendar years, and claiming treaty benefits without a US or foreign TIN where required.

ECI changes the picture

If your income is effectively connected with a US trade or business, W-8ECI may be the right form instead — withholding stops, but a US tax return is expected. This is where foreign owners of active US LLCs often need advice, not just a form.

The bottom line

US person → W-9. Foreign individual → W-8BEN. Foreign company → W-8BEN-E. Active US business income → possibly W-8ECI plus a return. MOREOFTAX prepares the right certifications and the filings behind them.