What Is Form W-8?
The IRS foreign status certificate series refers to United States withholding forms under which foreign persons document non-US status and claim treaty-reduced withholding.
Also known as: W-8 Series, IRS W-8 Forms.
How Form W-8 works
Form W-8 is requested by a withholding agent, such as a US platform, broker or client, before paying US-source income to a payee who claims foreign status, and the correct variant depends on who the payee is and what income is received. Foreign individuals generally use W-8BEN, foreign entities W-8BEN-E, recipients of effectively connected income W-8ECI, foreign governments and certain organisations W-8EXP, and intermediaries W-8IMY. The form stays with the payer rather than the IRS and is generally valid until the end of the third calendar year after signature, unless circumstances change. Without a valid certificate, payers may apply default withholding, which reaches thirty percent on certain US-source income.
Form W-8 vs Form W-9
Unlike Form W-9, which US persons use to provide a taxpayer identification number to payers, Form W-8 certifies that the payee is not a US person.
Example
Illustrative example: A freelance designer resident in Country A invoices a US company, while the designer's Country A agency also receives US royalties. The US company requests Form W-8BEN from the designer as an individual, and the royalty payer requests Form W-8BEN-E from the agency as a foreign entity.
Common misconception
Myth: Any W-8 version works as long as the payee is outside the US.
Reality: Form W-8 variants are not interchangeable, because the correct certificate depends on whether the payee is an individual, an entity, an intermediary or receives effectively connected income.
Frequently asked questions
What is a W-8 form?
Form W-8 is a series of IRS withholding certificates by which foreign individuals and entities document non-US status to a payer and, where eligible, claim reduced withholding under a treaty.
How long is a W-8 form valid?
A Form W-8 is generally valid from signature until the last day of the third succeeding calendar year, according to IRS instructions, unless a change in circumstances makes information on the form incorrect.
Related terms
- Form W-9 — Counterpart certificate for US persons
- Form W-8BEN — W-8 variant for foreign individuals
- Withholding Agent — Party requesting and retaining W-8 forms
- Form W-8EXP — Version for foreign governments and tax-exempt organizations
Related guides
- Tax treaties and international taxation — Treaty rates claimed through W-8 certificates
Sources
Last verified: 2026-10-08. This entry is general information, not tax or legal advice; rules vary by country and change over time.
