When you pay a foreign person, the single most important piece of paper you collect before cutting the check is their withholding certificate. It tells you who they are, what country they live in, whether a tax treaty applies, and ultimately how much US tax you must hold back. Collect the wrong form — or no form — and the default rule is unforgiving: withhold 30% of the gross payment (Internal Revenue Code §§1441–1442), and the payor is on the hook for any shortfall.
The hard part is that there isn't one foreign-payee form. There's a small family of them, and picking the right one comes down to three questions: Is the payee a US person or a foreign person? An individual or an entity? And is the income ordinary "passive" income or is it effectively connected to a US business? This article walks through that decision so you collect the right certificate the first time.
Start here: US person or foreign person?
The first fork is citizenship/residency status, not the form number.
- US persons — US citizens, US resident aliens, and US entities — give you a Form W-9, certifying their US status and taxpayer identification number. A correct W-9 generally means no Chapter 3 withholding (the foreign-payee withholding regime doesn't apply to US persons).
- Foreign persons — nonresident alien individuals and foreign entities — give you one of the W-8 forms. Which W-8 depends on the next two questions.
If a payee won't certify status at all, you treat them as foreign and withhold at 30%. Status is the gate; everything else is downstream.
Within the W-8 family: the three you'll see most
For a small business paying foreign contractors, licensors, or service providers, three forms cover the overwhelming majority of situations.
W-8BEN — foreign individuals receiving passive (FDAP) income
Form W-8BEN (Certificate of Foreign Status of Beneficial Owner for United States Tax Withholding and Reporting (Individuals)) is for a foreign individual who is the beneficial owner of US-source income and either accepts the default withholding or claims a reduced treaty rate.
It covers what the tax rules call FDAP income — "fixed or determinable annual or periodical" income, which is essentially ordinary passive income: royalties, rents, interest, dividends, and similar payments. A UK author receiving US book royalties, or a German individual licensing a photograph to a US publisher, gives you a W-8BEN. On it, the individual states their country of residence and, if a treaty applies, the specific article and rate they're claiming.
Validity. Per the IRS Instructions for Form W-8BEN, the form "will remain in effect for purposes of establishing foreign status for a period starting on the date the form is signed and ending on the last day of the third succeeding calendar year, unless a change in circumstances makes any information on the form incorrect." In practice: a W-8BEN signed any time in 2026 is generally good through December 31, 2029 — unless the payee's facts change first (new address, new citizenship, loss of treaty eligibility), in which case it expires immediately and you need a fresh one.
Important boundary. W-8BEN is for FDAP/passive income, not for an individual's personal-services compensation claimed under a treaty. A foreign individual claiming a treaty exemption on pay for services uses Form 8233, not W-8BEN. (See our companion note, article_form_8233_vs_w8ben.md, for that distinction — it trips up a lot of payors.)
W-8BEN-E — foreign entities (and it carries the FATCA classification)
Form W-8BEN-E is the entity counterpart. If your payee is a foreign company, partnership, foundation, or other organization — not a flesh-and-blood individual — they use W-8BEN-E, even if the income type is identical to what an individual would report on a plain W-8BEN. A Canadian software corporation licensing code to you, or an Irish design studio receiving royalties, gives you a W-8BEN-E.
W-8BEN-E does everything W-8BEN does (establishes foreign status, identifies the beneficial owner, makes the treaty claim) plus one more job: it captures the entity's Chapter 4 / FATCA classification. FATCA — the Foreign Account Tax Compliance Act — requires foreign entities to declare a status (for example, an active or passive non-financial foreign entity, or one of several categories of foreign financial institution). That entity-classification section is the reason the entity form is so much longer than the individual one, and it's why an entity cannot simply use the shorter W-8BEN.
For treaty claims, entities also have an extra hurdle individuals don't: most modern US treaties contain a Limitation on Benefits (LOB) article, and the entity has to certify it meets one of the LOB tests to qualify for the reduced rate. Validity follows the same general rule as the individual form — through the last day of the third succeeding calendar year, absent a change in circumstances — though some entity certifications can remain valid indefinitely in narrow cases; check the current IRS instructions for the specific situation.
W-8ECI — income effectively connected with a US trade or business
Form W-8ECI (Certificate of Foreign Person's Claim That Income Is Effectively Connected With the Conduct of a Trade or Business in the United States) is fundamentally different from the other two. It is not a treaty-claim form. With W-8ECI, the foreign payee certifies that the income you're paying is effectively connected income (ECI) — income tied to their active conduct of a US trade or business — and that they will file a US income tax return and pay tax on a net basis (income minus deductions), the same way a US business is taxed.
The practical effect for you, the payor: a valid W-8ECI generally means no 30% Chapter 3 withholding on the items it covers. The 30% gross withholding gets switched off precisely because the payee has agreed to step into the US tax system and self-report on a net basis instead. The payee must also supply a US taxpayer identification number on the form — there's no W-8ECI without one, because the whole premise is that they're filing a US return.
Two relationships are worth understanding:
- Permanent establishment / business profits. ECI is the domestic-law cousin of the treaty concept of a permanent establishment (PE). If a foreign business is operating in the US to the point where its profits are taxable here, that income is effectively connected, and W-8ECI is the form that documents it. (When there's no US PE and the income is passive, you're back in W-8BEN/W-8BEN-E treaty-claim territory.)
- The real-property net-basis election. A foreign person earning US real-property rental income has a choice. Left alone, gross rents are FDAP and face 30% withholding with no treaty relief (the situs country gets unlimited taxing rights on real property). But the owner can elect under IRC §871(d) (individuals) or §882(d) (corporations) to treat that rental income as if it were effectively connected — letting them deduct expenses, depreciation, and interest, and pay tax on the net number. That election is made by providing W-8ECI (the IRS instructions direct a payee who has made or will make a §871(d)/§882(d) election to use this form). See our real-property note for the full mechanics; the headline is that the form that turns gross-basis 30% into net-basis filing is W-8ECI.
Validity. W-8ECI follows the same general three-calendar-year rule, expiring on the last day of the third succeeding year absent a change in circumstances.
The decision tree
In prose: US person? → W-9, done. Foreign person? → then ask whether the income is effectively connected to a US trade or business. If yes (ECI, including a real-property net election) → W-8ECI, regardless of whether the payee is an individual or entity. If no — it's ordinary passive/FDAP income → then split on entity type: individual → W-8BEN, entity → W-8BEN-E. Treaty claims for reduced rates ride inside the W-8BEN or W-8BEN-E. The one carve-out: an individual claiming a treaty exemption on personal-services pay uses Form 8233, not a W-8.
As a table:
| Payee | Income type | Treaty claim? | Form |
|---|---|---|---|
| US person (citizen, resident, US entity) | Any | n/a | W-9 |
| Foreign individual | Passive / FDAP (royalties, rent, interest) | Optional, on the form | W-8BEN |
| Foreign individual | Personal-services pay, treaty exemption | Yes — services | Form 8233 (not a W-8) |
| Foreign entity | Passive / FDAP | Optional, on the form (+ LOB) | W-8BEN-E |
| Foreign person (individual or entity) | Effectively connected with a US trade/business | No — ECI, not a treaty rate | W-8ECI |
| Foreign person | US real-property rental, net-basis §871(d)/§882(d) election | n/a | W-8ECI |
Two more forms, so the family is complete
You'll rarely collect these as a small payor, but know they exist so you can recognize them:
- Form W-8EXP — for foreign governments, international organizations, foreign central banks, foreign tax-exempt organizations, and foreign private foundations claiming an exemption or reduced rate under their special status.
- Form W-8IMY — for intermediaries and flow-through entities (qualified and nonqualified intermediaries, certain US branches, foreign partnerships and trusts) that receive a payment on behalf of someone else. A W-8IMY isn't a beneficial-owner certificate; it comes bundled with documentation for the underlying owners, who supply their own W-8s or W-9s.
Common mistakes (and what they cost)
- An entity using W-8BEN. A foreign company hands you the short individual form. It's invalid for an entity — and missing the FATCA classification — so you can't rely on it. Treat the payment as undocumented and withhold 30%. The fix is always W-8BEN-E for entities.
- Using W-8ECI without actually having ECI. A payee submits W-8ECI to shut off withholding, but has no US trade or business and no intention of filing a US return. That certification is false, the "no withholding" outcome isn't supported, and the payor can be left liable for the tax that should have been withheld. W-8ECI is a commitment to file a US return on a net basis — not a withholding-avoidance shortcut.
- Mixing a treaty FDAP claim with an ECI claim. The same income can't be both passive treaty income and effectively connected income. If a payee gives you a W-8BEN claiming a treaty rate on royalties and a W-8ECI calling the same royalties effectively connected, the positions contradict each other. Go back and determine which is actually true before paying — don't honor both.
- Letting a certificate go stale. A W-8 generally dies on December 31 of its third succeeding year, or the moment the payee's facts change. Withholding on an expired certificate is the same as withholding on no certificate: back to 30%.
Why it matters
The form isn't bureaucratic box-checking — it is the withholding decision. The wrong form, or a stale one, drops you to the 30% statutory default even when the payee genuinely qualified for a lower rate, and any under-withholding becomes the payor's liability, not the payee's. W-8BEN and W-8BEN-E are about establishing foreign status and claiming a treaty rate on passive income; W-8ECI is a different animal entirely — it moves the payee out of gross-basis withholding and into net-basis US filing. Match the form to the three questions — US-or-foreign, individual-or-entity, passive-or-effectively-connected — and the withholding follows correctly.
Where a specific entity classification, treaty article, or election is in play, confirm the field-level detail against the current IRS instructions for the form (the W-8 forms and their instructions are updated periodically) before you rely on it.
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This article is for general educational purposes and is not legal or tax advice. Withholding outcomes depend on the specific facts of each payment. Consult a qualified tax professional before making withholding decisions.