W-9 vs W-8 BEN: When to Use Which Form for Domestic and Foreign Persons

The Fundamental Question: US or Foreign?

The choice between W-9 and W-8 BEN comes down to ONE question: is the recipient a US person or a foreign person?

"US person" includes: US citizens, US resident aliens, US-formed entities (LLCs, corporations, partnerships, trusts), and US estates. US persons complete W-9.

"Foreign person" includes: non-US-citizen individuals not residing in the US, foreign-formed entities, foreign partnerships, foreign trusts, foreign estates. Foreign persons complete W-8 BEN (individuals) or W-8 BEN-E (entities).

The distinction is not about WHERE the person is when they sign the form. It is about their tax-status classification. A US citizen living in Japan completes W-9, not W-8 BEN. A French citizen who happens to be in the US on a tourist visa completes W-8 BEN, not W-9.

What Form W-9 Does

At a Glance

Item	Value
Form W-9	US persons (individuals + entities) certifying TIN
Form W-8 BEN	Foreign INDIVIDUALS certifying foreign status
Form W-8 BEN-E	Foreign ENTITIES certifying foreign status
Default withholding (no W-8)	30% on US source FDAP income
Form validity	W-9: no expiration; W-8: 3 years from signing

Form W-9 is "Request for Taxpayer Identification Number and Certification." Completed by US persons to provide their TIN (SSN, EIN, or ITIN) to a payor.

Three certifications on the form: (1) the TIN provided is correct; (2) the person is NOT subject to backup withholding (typically true unless the IRS has notified them otherwise); (3) the person is a US person.

No tax withholding follows from a properly completed W-9. The payor reports payments to the IRS via 1099 forms (NEC, MISC, K, INT, DIV, etc.) and the recipient pays tax via their own return.

W-9 has no expiration. Once on file with the payor, it remains valid unless the recipient's information changes (name change, TIN change, address change, change to/from US person status).

What Form W-8 BEN Does (Individuals)

Form W-8 BEN is "Certificate of Foreign Status of Beneficial Owner for United States Tax Withholding and Reporting (Individuals)." Completed by foreign INDIVIDUALS to:

(1) Certify they are NOT a US person.

(2) Claim any applicable tax treaty benefit (reduced withholding rate on US source income).

(3) Establish that they are the beneficial owner of the income (not an intermediary).

Without a valid W-8 BEN, the payor must withhold 30% on US source FDAP income (fixed, determinable, annual, periodic, interest, dividends, royalties, certain rents, certain services). With a valid W-8 BEN claiming treaty benefit, the rate may be reduced (e.g., 15% for UK, 10% for some other countries, 0% for certain treaty positions).

Validity: 3 years from the year of signing. After expiration, a new W-8 BEN is required.

What Form W-8 BEN-E Does (Entities)

Form W-8 BEN-E is the entity version of W-8 BEN, for foreign-formed entities (corporations, partnerships, trusts, etc.).

The form is significantly more complex than W-8 BEN. It captures: entity type classification, country of organization, GIIN (for FATCA purposes) if applicable, beneficial-owner certification, and any tax treaty claim.

FATCA implications: foreign financial entities receiving payments from US sources must comply with FATCA reporting. The W-8 BEN-E captures the entity's FATCA status. Non-compliant entities face 30% withholding regardless of treaty position.

Validity: 3 years from the year of signing (same as W-8 BEN).

Which Form to Request from Different Recipients

US individual (US citizen or US resident alien): W-9.

US-formed LLC, corporation, partnership, trust: W-9. Note: the W-9 captures the entity's federal tax classification (disregarded entity, partnership, S-corp, C-corp). The classification affects whether 1099s are issued and at what amounts.

Foreign individual (non-US citizen, non-US resident alien): W-8 BEN. If they want treaty benefits, they must provide a US TIN (typically ITIN) and complete the treaty claim section.

Foreign-formed entity: W-8 BEN-E. More complex form. May require professional preparation, especially for treaty claims and FATCA classification.

Foreign branch of US entity, or US branch of foreign entity: special W-8 forms apply (W-8 IMY for intermediaries, W-8 ECI for effectively connected income). Beyond the scope of this article, consult a tax advisor.

Treaty Benefits on W-8 BEN

The US has tax treaties with about 70 countries. Treaty benefits typically REDUCE the 30% default withholding rate on US source income flowing to foreign persons.

Common treaty rates on common income types: dividends (15% UK, 5% US-UK qualifying parent-subsidiary), interest (0% UK and many others), royalties (varies widely, 0% for many countries), pension income (0% generally).

To claim treaty benefits, the foreign person must: (1) be a resident of a treaty country; (2) have a US TIN (usually ITIN, covered separately in this series); (3) complete Part II of W-8 BEN with the specific treaty article and rate; (4) certify they meet any limitation-on-benefits provisions.

Common error: claiming treaty benefits without providing an ITIN. The payor must still withhold 30% if the ITIN is missing. Get the ITIN before claiming treaty benefits.

What Happens Without a Valid Form

Without W-9 from a US person: the payor must apply BACKUP WITHHOLDING of 24% on all future payments. The withholding is remitted via Form 945 (Annual Return of Withheld Federal Income Tax). The recipient must wait for their tax return to recover the over-withholding.

Without W-8 BEN from a foreign person: the payor must withhold 30% on US source FDAP income. The recipient cannot recover the over-withholding unless they file a US tax return (Form 1040-NR for individuals, Form 1120-F for foreign corporations), which requires a TIN.

Treaty position claimed without supporting documentation: 30% withholding applies. The recipient must file a US return to claim the treaty refund.

Best practice for payors: collect W-9 or W-8 BEN BEFORE the first payment. Once paid, the cost of recovering over-withholding shifts to the recipient.

Common W-9 / W-8 BEN Mistakes

Mistake 1: Asking US persons to complete W-8 BEN because they live abroad. Wrong. US citizens are US persons regardless of where they live. They complete W-9.

Mistake 2: Asking foreign persons to complete W-9. The foreign person is signing a false certification (they're NOT a US person). If the payor knows or has reason to know the recipient is foreign, accepting a W-9 from them creates liability.

Mistake 3: Letting W-8 BEN expire. W-8 BEN is valid only 3 years from signing. After expiration, the recipient must complete a new one, and 30% withholding applies until they do.

Mistake 4: Claiming treaty benefits without an ITIN. The treaty benefit is invalid without a US TIN. Get the ITIN first.

Mistake 5: Using W-8 BEN for foreign entities. Wrong form. Foreign entities use W-8 BEN-E (significantly different and more complex).

Mistake 6: Not collecting W-9 or W-8 BEN at all. The IRS audits payors who issue 1099s with missing or incorrect TINs. Penalty: $60-$330 per incorrect form.

How File.Business Handles Tax Forms

For US founders forming entities: we provide W-9 templates pre-populated with the entity's information (name, EIN, classification) ready to send to clients and payors.

For foreign founders forming US entities: we prepare W-8 BEN (for individual founders) or W-8 BEN-E (for foreign-formed entity owners). If treaty benefits are claimed, we coordinate the ITIN application first.

For US entities working with foreign contractors: we provide W-8 BEN / W-8 BEN-E collection process integrated with our contractor onboarding flow, ensuring forms are collected before first payment and refreshed before 3-year expiration.

Standalone services: W-9 template + entity info population: included in formation. W-8 BEN preparation for foreign individuals: $99 flat. W-8 BEN-E preparation for foreign entities: $249 flat.

Frequently Asked Questions

Who completes W-9 vs W-8 BEN?

US persons (US citizens, US resident aliens, US-formed entities) complete W-9. Foreign individuals complete W-8 BEN. Foreign entities complete W-8 BEN-E. The distinction is tax-status classification, not physical location.

What happens if I don't have a W-9 or W-8 BEN from someone I'm paying?

For US persons: you must apply 24% backup withholding. For foreign persons receiving US source income: you must withhold 30%. The recipient must recover via tax return.

Does W-8 BEN expire?

Yes. W-8 BEN (and W-8 BEN-E) is valid for 3 years from the year of signing. After expiration, a new form is required and 30% withholding applies until provided.

Can foreign persons claim treaty benefits without an ITIN?

No. To claim a treaty benefit on W-8 BEN, the foreign person must provide a US TIN (typically ITIN). Without it, the treaty position is invalid and 30% withholding applies.

Should a US citizen living abroad complete W-9 or W-8 BEN?

W-9. US citizens are US persons regardless of where they live. The "foreign" classification is about tax status, not physical location. Asking a US citizen to complete W-8 BEN is incorrect.

What is the difference between W-8 BEN and W-8 BEN-E?

W-8 BEN is for foreign INDIVIDUALS. W-8 BEN-E is for foreign ENTITIES (corporations, partnerships, trusts). The entity form is significantly more complex and captures FATCA classification.

Can File.Business prepare these forms for me?

Yes. W-9 template pre-populated for your entity: included with formation. W-8 BEN preparation for foreign individuals: $99 flat. W-8 BEN-E preparation for foreign entities: $249 flat.