What is Form W-8BEN and why does a US company ask for it?
Form W-8BEN, "Certificate of Foreign Status of Beneficial Owner for United States Tax Withholding and Reporting (Individuals)", is an IRS form that proves you are not a US citizen or US tax resident.
US payers are required to withhold 30% from certain US-source payments to foreign people unless they hold documentation showing a lower rate applies. A W-8BEN is that documentation. Without it, a cautious finance team may treat you as undocumented and withhold, or simply refuse to pay you until it arrives.
For most remote contractors, the form is a formality: it confirms who you are and where you live so the company can pay you in full.
Does signing a W-8BEN mean I pay US tax?
No. The form does the opposite: it documents why US tax should not be taken. Under US sourcing rules, income for personal services is sourced where the work is physically performed. If you do the work from your home country, that income is generally foreign-source and not subject to US withholding.
You still owe tax in the country where you are tax resident. The W-8BEN does not change that, and your local tax authority will expect you to declare the income.
W-8BEN vs W-8BEN-E vs W-9: which form do you need?
Pick the form based on who is receiving the money, not on what job you do.
| W-8BEN | W-8BEN-E | W-9 | |
|---|---|---|---|
| Who fills it in | Non-US individuals and sole traders | Non-US companies (LLC, Ltd, GmbH, etc.) | US citizens, green-card holders and US tax residents |
| Typical remote use | You invoice in your own name | You invoice through your registered company | You are a US person anywhere in the world |
| Tax ID asked for | Your foreign tax ID; US TIN usually not needed | Company's foreign tax ID; FATCA status | US SSN or EIN |
| Length | 1 page | 8 pages | 1 page |
| Sent to | The payer, not the IRS | The payer, not the IRS | The payer, not the IRS |
How do you fill out Form W-8BEN line by line?
Part I identifies you, Part II is the optional tax treaty claim, and Part III is your signature. Here is what each line means for a remote contractor.
- Line 1, Name: your full legal name as on your passport.
- Line 2, Country of citizenship: the country on your passport. Dual citizens list the country where they are tax resident if they hold that citizenship.
- Line 3, Permanent residence address: your home address in the country where you are tax resident. Not a PO box, not an in-care-of address, not a co-working space.
- Line 4, Mailing address: only if it differs from line 3.
- Line 5, US taxpayer identification number: leave blank in most cases. You only need one if you are claiming treaty benefits on US-source income.
- Line 6a, Foreign tax identifying number: your local tax ID (for example a national ID or tax number). Line 6b is a checkbox only for people whose country does not issue tax IDs.
- Line 7, Reference number: optional; some platforms ask you to put your account ID here.
- Line 8, Date of birth: in MM-DD-YYYY format, the US order.
- Part II, lines 9 and 10: the treaty claim. Name your country of residence on line 9 if a US tax treaty exists. Line 10 is for special rates and is rarely relevant to service contractors.
- Part III: sign, date, and print your name. Platforms like Deel and Upwork collect this electronically.
Should you claim tax treaty benefits in Part II?
The US has income tax treaties with around 60 countries. Treaties can reduce or remove US withholding on US-source income such as royalties, dividends, or services performed in the US.
For a contractor who does all the work outside the US, the treaty claim usually changes nothing, because foreign-source service income is not subject to US withholding in the first place. Many payers still ask you to complete Part II if your country has a treaty. Fill it in accurately if asked; do not claim a treaty for a country where you are not resident.
What mistakes get a W-8BEN rejected?
Finance teams and platforms reject forms for small, avoidable reasons. Check these before you sign.
- Using the W-8BEN when you invoice through a company (that needs a W-8BEN-E)
- A PO box or business address on line 3 instead of your home address
- Leaving line 6a empty without ticking 6b
- Writing the date of birth in DD-MM-YYYY order
- Claiming a treaty country you don't live in
- Forgetting to sign or date Part III
- Not submitting a new form within 30 days after you move country or your details change
Frequently asked questions
+Do I need a US ITIN or SSN to fill out a W-8BEN?
Usually not. Most remote contractors leave line 5 blank and give their foreign tax ID on line 6a. A US TIN is mainly needed when claiming treaty benefits on certain US-source income.
+Do I send the W-8BEN to the IRS?
No. You give it to the company or platform paying you, and it keeps the form on file.
+How long is a W-8BEN valid?
Generally until the last day of the third calendar year after you sign it. A form signed in 2026 stays valid until 31 December 2029, unless a change in your circumstances makes it incorrect sooner.
+Will a US company withhold 30% from my pay?
Not if you work from outside the US and have supplied a valid W-8BEN. Withholding applies to certain US-source income, and services performed abroad are generally foreign-source.
+What happens if I move to another country?
Submit a new W-8BEN with your new residence address within 30 days of the change.