Do Foreign Companies Use a W-9 or W-8 Form?

Do foreign companies use a W-9 or a W-8? A foreign company uses a W-8, not a W-9. The IRS reserves Form W-9 for U.S. persons, and its instructions state directly that a foreign person “may not provide a Form W-9.”¹ For most foreign entities, the right form is Form W-8BEN-E, which certifies non-U.S. status for both income tax withholding and FATCA reporting.² Skip it or fill it out wrong, and the U.S. payer withholds 30% of every payment and sends it to the IRS.

Why a W-9 Does Not Work for a Foreign Company

Form W-9 exists to collect a Taxpayer Identification Number from U.S. persons so payers can report income on 1099 forms. If a U.S. business asks a foreign vendor for a W-9 and receives one, the form is invalid, and the payer stays on the hook for any tax that should have been withheld.¹

Domestic and foreign payments run on separate tracks. Domestic payments get reported on 1099 forms under backup withholding rules. Payments to foreign payees fall under Chapter 3 of the Internal Revenue Code, which governs withholding on nonresident aliens and foreign corporations, and Chapter 4, known as FATCA.³ Both chapters carry a default 30% rate, and the W-8 series is how a foreign payee documents its status and, where a treaty allows, claims a lower rate.⁴

Which W-8 Form to Use

The W-8 series has several versions, and the right one depends on who is being paid and how the income connects to the United States.

Form W-8BEN-E is the standard form for foreign entities such as corporations, associations, and certain trusts that are the beneficial owners of the income. Most foreign companies receiving U.S.-source income need this one.²
Form W-8BEN is the individual version. Foreign individuals, not entities, use it to certify status and claim treaty benefits.⁵
Form W-8ECI is for foreign persons whose income is effectively connected with a U.S. trade or business. Effectively connected income is taxed at graduated rates rather than the flat 30%, so withholding at source generally does not apply.⁶
Form W-8IMY is for flow-through entities such as foreign partnerships (other than withholding foreign partnerships) and foreign simple or grantor trusts. If an entity would otherwise complete a W-8BEN-E but is a partnership or simple trust not claiming treaty benefits on its own behalf, the withholding agent should request a W-8IMY instead.⁷

The rest of this guide focuses on Form W-8BEN-E, since it covers the great majority of foreign-company scenarios.

What Income Triggers the 30% Withholding

Not every payment to a foreign company gets the 30% haircut. The withholding applies to what the tax code calls fixed or determinable annual or periodical income, usually shortened to FDAP. Common examples are interest, dividends, royalties, rents, and compensation for services performed in the United States.⁴ If a U.S. buyer is paying a foreign company for goods shipped from overseas, and the income has no U.S. source, withholding generally does not apply. Payments for services, licensing fees, or investment returns with a U.S. connection almost always do.

Foreign corporations face the same 30% rate under a parallel statute that cross-references the same FDAP categories.⁸ Under FATCA, the same 30% also hits “withholdable payments” made to foreign financial institutions that have not entered into reporting agreements with the IRS.⁹ That overlap is why a single form, W-8BEN-E, addresses both chapters.

What to Gather Before Filling Out W-8BEN-E

The form runs eight pages with dense instructions. Walking in with the right documents saves days of back-and-forth with the withholding agent.

Entity Details and FATCA Status

Start with the company’s full legal name and country of incorporation. Then figure out the Chapter 4 (FATCA) status, because that classification drives which sections of the form apply. Common categories include Participating FFI, Deemed-Compliant FFI, Active NFFE, and Passive NFFE.¹⁰ An entity qualifies as an Active NFFE if less than 50% of its gross income for the prior year was passive (interest, dividends, and the like) and less than 50% of its assets produced passive income. Most operating businesses meet that test comfortably.

Certain FFIs, and deemed-compliant FFIs that are required to register, must obtain a Global Intermediary Identification Number (GIIN) from the IRS before completing the form.¹⁰ A missing GIIN when one is required will invalidate the submission.

Tax Identification Numbers

The form asks for a foreign tax identification number (FTIN) and, in some cases, a U.S. Taxpayer Identification Number. A U.S. TIN is generally required to claim treaty benefits unless the entity provides its FTIN instead. The IRS carves out exceptions for certain investment income: dividends and interest from actively traded stocks or debt obligations, dividends from registered mutual funds, and income from publicly offered unit investment trusts do not require a U.S. TIN for treaty claims.¹¹ A foreign entity that conducts a U.S. trade or business, or needs to claim treaty exemptions, generally must obtain a U.S. Employer Identification Number, whether or not it has any employees in the country.

Treaty Information

To reduce the 30% rate, the company identifies the specific income tax treaty between its country and the United States, the article number that provides the reduced rate, and the type of income covered. The IRS publishes tax treaty tables listing rates and articles by country.¹² Not every country has a treaty with the United States, and not every treaty covers every type of income. Checking the tables first avoids completing the whole form only to find no reduced rate exists.

Modern treaties also contain a Limitation on Benefits article to block “treaty shopping.” When claiming a reduced rate, the entity has to certify that it meets one of the LOB tests, such as being publicly traded in its home country, being owned by qualifying residents, or carrying on a substantial active business there.¹⁰ Failing the LOB test means no treaty rate, regardless of how the rest of the form looks.

How Long the Form Lasts

A completed Form W-8BEN-E goes to the U.S. withholding agent (the payer, its bank, or a broker), not the IRS. It generally stays valid from the date of signing through the last day of the third succeeding calendar year. A form signed on March 15, 2026, for example, remains valid through December 31, 2029. Some entities qualify for indefinite validity in narrow circumstances, but treaty claims never do.¹⁰

If any information on the form becomes incorrect, whether from a change in country of residence, a shift in FATCA classification, or a corporate restructuring, the entity must notify the withholding agent and submit a new form within 30 days.¹⁰ Miss that window, and the withholding agent may revert to the full 30% rate on all payments made after the change.

What Happens If the Form Is Wrong or Missing

The consequences run in both directions.

For the U.S. payer, failing to withhold when required means owing the missing tax, plus interest and penalties. Under the regulations, the withholding agent is liable for the full amount that should have been withheld, and even if another party eventually pays the tax, the original agent is not relieved of the interest and penalties that accrued.¹³ That is why compliance departments are strict about rejecting W-8 forms with small errors. A withholding agent that relies on a form it knows or should know is incorrect faces the same exposure, plus possible accuracy or fraud penalties.

For the foreign entity, the form is signed under penalties of perjury, and the instructions warn that the signer and the beneficial owner may face penalties for filing an erroneous, false, or fraudulent form.¹⁰ Even an honest error can cause the form to be treated as invalid, and every payment made until a corrected form is accepted gets hit with the default 30% withholding.

On the reporting side, the withholding agent files Form 1042-S with the IRS and sends a copy to the foreign payee by March 15 of the following calendar year. That filing happens whether or not any tax was actually withheld, since treaty-exempt payments still have to be reported.¹⁴

When the Answer Is Simple, and When It Is Not

For a straightforward Active NFFE that is not claiming treaty benefits, the W-8BEN-E is manageable. The company completes Part I, checks the Active NFFE box on line 5, completes the short Active NFFE certification, signs, and sends it to the payer. That handles many small and mid-sized foreign companies selling goods or services to U.S. buyers.

The picture gets more complicated fast once treaty benefits enter the mix, once the FATCA classification is anything other than Active NFFE, or once ownership runs through multiple layers or countries. LOB analysis alone can require tracing shareholders across several entities. For those cases, the cost of a qualified international tax professional is usually modest compared with losing 30% of every payment or answering to the IRS for a bad form.

1
Internal Revenue Service. Instructions for the Requester of Form W-9 (Rev. March 2024)
2
Internal Revenue Service. About Form W-8 BEN-E, Certificate of Status of Beneficial Owner for United States Tax Withholding and Reporting (Entities)
3
Office of the Law Revision Counsel. 26 USC Chapter 3 – Withholding of Tax on Nonresident Aliens and Foreign Corporations
4
Office of the Law Revision Counsel. 26 USC 1441 – Withholding of Tax on Nonresident Aliens
5
Internal Revenue Service. About Instructions for the Requester of Forms W-8 BEN, W-8 BEN-E, W-8 ECI, W-8 EXP, and W-8 IMY
6
Internal Revenue Service. Instructions for Form W-8ECI
7
Internal Revenue Service. Instructions for the Requester of Forms W-8BEN, W-8BEN-E, W-8ECI, W-8EXP, and W-8IMY
8
Office of the Law Revision Counsel. 26 USC 1442 – Withholding of Tax on Foreign Corporations
9
Office of the Law Revision Counsel. 26 USC 1471 – Withholdable Payments to Foreign Financial Institutions
10
Internal Revenue Service. Instructions for Form W-8BEN-E (Rev. October 2021)
11
Internal Revenue Service. Instructions for Form W-8BEN-E
12
Internal Revenue Service. Tax Treaty Tables
13
eCFR. 26 CFR 1.1474-1 – Liability for Withheld Tax and Withholding Agent Reporting
14
Internal Revenue Service. Instructions for Form 1042-S (2026)