W-9 vs. W-8: How to Tell Which Form a Payee Should Complete

Use Form W-9 for a payee who is a U.S. person for U.S. tax purposes, and use the appropriate Form W-8 for a foreign person. The choice depends on the payee’s tax status and the type of payment, not simply on where the payee lives, where work was performed, or how the payment is made. A W-9 gives the requester the payee’s taxpayer identification number and tax certifications for applicable U.S. information reporting. Forms in the W-8 series document a foreign person’s status and may support a claim for reduced withholding when the requirements are met. Choosing the wrong form or relying on outdated documentation can affect reporting and withholding, so determine the payee’s status before collecting a form.

W-9 and W-8 at a Glance

How to Determine Whether a Payee Is a U.S. Person

First determine whether the payee is a U.S. person for tax purposes. Generally, this includes U.S. citizens and resident aliens as well as domestic partnerships and corporations and certain estates and trusts. For an individual, citizenship and tax residency matter more than physical location. A U.S. citizen who lives abroad generally remains a U.S. person and completes Form W-9. A non-U.S. citizen living outside the United States is generally a foreign person and completes the appropriate W-8, even if the person uses a U.S. mailing address or bank account.

A mailing address, bank details, or phone number do not by themselves establish tax status. Some cases require closer attention, including dual citizenship, a recent change in immigration status, or significant time spent in the United States. The payer should not use location alone to decide which form applies.

What Form W-9 Does

Form W-9, “Request for Taxpayer Identification Number and Certification,” allows a requester to collect a payee’s legal name, federal tax classification, address, and TIN. The payee also makes the certifications shown on the form. The requester generally retains the completed W-9 rather than filing it with a routine tax return. The information may then be used to prepare an applicable Form 1099.

A W-9 is commonly requested from a U.S. independent contractor, freelancer, sole proprietor, or domestic entity. It is also used by a U.S. citizen or other U.S. person who lives outside the country. The payee’s tax classification should match the person’s or entity’s actual status. The IRS provides the Form W-9 draft and instructions, which can help requesters and payees review the form’s requirements. Because forms can be revised, use the current version rather than relying on an old copy stored with onboarding materials.

Which W-8 Form Applies to a Foreign Payee?

W-8 is a family of forms, not a single form for every foreign payee. The appropriate version depends on whether the recipient is an individual or entity, the nature of the income, and whether the recipient is receiving payment for itself or on behalf of others. Wesleyan University’s finance guidance summarizes the main forms, including W-8BEN, W-8BEN-E, W-8ECI, and W-8IMY.

Form W-8BEN

W-8BEN is generally used by a foreign individual. It documents foreign status and may support a claim for a reduced withholding rate under an applicable income tax treaty if the individual qualifies. A foreign individual does not use a W-9 merely because the payer is a U.S. company.

Form W-8BEN-E

W-8BEN-E is generally used by a foreign entity rather than an individual. It asks for more detailed information, including the entity’s status for U.S. tax purposes. The entity’s selections need to reflect its actual structure and circumstances.

Form W-8ECI

W-8ECI is used when income is effectively connected with a U.S. trade or business. It is not a general substitute for W-8BEN. Whether it applies depends on the nature of the income and the foreign person’s U.S. business activity.

Form W-8IMY

W-8IMY is generally used by intermediaries, certain flow-through entities, and other parties that receive payments on behalf of others. It may require additional documentation, so it should not be selected as a default form for a foreign payee.

How Documentation Affects Withholding and Reporting

The form helps the payer determine what reporting and withholding rules may apply. A valid W-9 can support U.S. information reporting, including Form 1099 reporting when required. W-8 documentation can establish foreign status and may support Form 1042-S reporting for applicable payments.

Missing or incorrect documentation can affect withholding. As Taxes for Expats explains, backup withholding connected with missing W-9 documentation may be 24%, while certain payments to foreign persons without appropriate W-8 documentation may be subject to a 30% default withholding rate. The actual treatment depends on the payment, the payee’s status, the documentation available, and applicable rules. Providing a W-8 does not by itself guarantee a reduced rate. A treaty claim must be properly supported, and some situations require a U.S. TIN or other information.

How Long Do the Forms Remain Valid?

A W-9 generally has no fixed expiration date while its information and certifications remain correct. A payer should obtain an updated form if it learns that relevant details have changed, such as a legal name or entity classification.

W-8 forms have specific validity rules. W-8BEN and W-8BEN-E generally remain valid through the end of the third succeeding calendar year after signing, unless a change in circumstances makes the information incorrect sooner. Payment teams should track renewal dates and changes in status. A form that was current when a payee was onboarded may no longer be valid when a later payment is due.

A Practical Process for Choosing the Form

Before sending a form, establish the facts that determine which one applies:

1. Determine whether the payee is a U.S. person or a foreign person for U.S. tax purposes. Do not rely on a mailing address alone.
2. Identify whether the payee is an individual or an entity.
3. Consider the type and source of payment because these can affect documentation and withholding.
4. For a foreign payee, identify the appropriate W-8 form based on the recipient’s status and role.
5. Check whether the payee is claiming treaty benefits and whether the required information is provided.
6. Track form validity and request updated documentation when it expires or relevant circumstances change.

*This article is for general informational purposes only and is not legal advice.