W-8BEN: the form to collect before paying someone abroad

The W-8BEN is the certificate a foreign individual gives a United States payer to establish that they are not a US person, and to claim a reduced rate of withholding under a tax treaty where one applies. Its counterpart for entities is the W-8BEN-E, which is substantially longer and asks about the entity’s status under international reporting rules.

It matters because the default is unfavourable. Payments of certain US-source income to foreign persons are subject to withholding at a statutory rate unless a valid certificate supports a lower one — and the obligation falls on the payer. A business that pays a foreign contractor in full without the form has usually not avoided the withholding; it has become liable for it.

What the W-8BEN establishes

• That the payee is a foreign individual rather than a US person, which is the point of the form.
• Their country of residence for tax purposes, and their foreign taxpayer identification number where one exists.
• A treaty claim, where the country of residence has a treaty with the United States and the income type qualifies — including the article relied on and the rate.
• A US taxpayer identification number where one is required for the treaty claim.
• A signed certification, dated, by the beneficial owner.

Not every payment is even in scope

Withholding applies to US-source income. Where a foreign contractor performs services entirely outside the United States, the income is generally foreign-source and outside the withholding regime — a distinction that trips up businesses in both directions, some withholding when they need not and others assuming no obligation because the person lives abroad. The location of the work, not the location of the payer or the bank, is the determining factor, and it is worth establishing per engagement rather than per vendor.

A W-8BEN generally remains valid until the end of the third calendar year following the year it was signed, and it becomes invalid earlier if the circumstances it certifies change. Diarise the expiry with the vendor record — an expired certificate is treated as no certificate at all.

Individuals and entities are different forms

A foreign individual signs a W-8BEN. A foreign company signs a W-8BEN-E, and that form requires the entity to state its chapter four status under the international reporting regime, which is where most of its length comes from. Sending an individual’s form to a company or vice versa produces an invalid certificate, and an invalid certificate has the same effect as none. Where the entity’s status is genuinely unclear — an intermediary, a partnership, a hybrid — the answer is worth taking advice on once rather than guessing every year.

Where it belongs in vendor setup

Treat it exactly like the domestic equivalent, as a step in supplier onboarding: no form, no first payment. Ettex Records holds the certificates per vendor with the expiry date visible so a lapse is caught before a payment rather than after, Ettex Sheets tracks which foreign vendors are approaching expiry, and the domestic counterpart is covered in w 9 form.

To be clear: none of this is tax advice, and cross-border withholding is an area where the cost of a wrong assumption falls on the payer. Rates, treaty eligibility and the sourcing of service income are questions for a tax adviser and the current IRS instructions.