A W-8 is an IRS tax form that foreign individuals and entities give to U.S. payers to certify their non-U.S. status. When someone outside the United States earns income from a U.S. source, such as investment dividends, freelance payments, or royalties, the payer typically must withhold a portion for taxes. The W-8 form tells the payer, “I’m not a U.S. person,” and in many cases allows the foreign recipient to claim a lower withholding rate or a complete exemption under a tax treaty between the U.S. and their home country.
Why the W-8 Exists
The U.S. generally withholds 30% of certain payments made to foreign persons. That default rate applies to income like dividends, interest, rents, and royalties sourced in the United States. Without a W-8 on file, the payer has no documented proof that you’re foreign and no basis for reducing that withholding rate. Filing a W-8 accomplishes two things: it establishes your foreign status so the payer doesn’t treat you as a U.S. taxpayer subject to backup withholding, and it lets you claim any reduced rate your country’s tax treaty with the U.S. provides.
For example, if you’re a freelance designer living in the U.K. and a U.S. company pays you for contract work, that company would normally withhold 30% of your payment. But the U.S.-U.K. tax treaty may reduce or eliminate that withholding for certain types of income. Your W-8 form is how you document your eligibility for the lower rate.
The Five Types of W-8 Forms
There isn’t just one W-8. The IRS has five versions, each designed for a different type of foreign person or situation.
W-8BEN (Individuals)
This is the most common version. If you’re a foreign individual receiving U.S.-sourced income, you’ll typically fill out Form W-8BEN. It covers things like investment dividends from a U.S. brokerage account, interest payments, or freelance income paid by a U.S. company. You use it to establish your foreign status and, if applicable, to claim a reduced withholding rate under your country’s tax treaty with the United States.
W-8BEN-E (Entities)
This is the corporate counterpart to the W-8BEN. Foreign companies, partnerships, and other non-individual entities use the W-8BEN-E to certify their foreign status and claim treaty benefits. It’s a significantly longer form because entities must identify their classification under U.S. tax rules and, in many cases, demonstrate they qualify for treaty benefits through a “Limitation on Benefits” provision, which is a set of tests designed to prevent companies from routing income through treaty countries just to get lower rates.
W-8ECI (Effectively Connected Income)
If you’re a foreign person earning income that is effectively connected with a U.S. trade or business, meaning you’re actively conducting business operations within the United States, you file a W-8ECI instead. This form tells the payer that the income should be treated as connected to your U.S. business activities. The practical effect is that the income gets taxed on your U.S. tax return at graduated rates rather than being subject to the flat 30% withholding.
W-8EXP (Exempt Organizations)
Foreign governments, international organizations, foreign central banks, and foreign tax-exempt organizations use the W-8EXP. These entities can claim exemptions from withholding under specific sections of U.S. tax law. Most individual readers won’t encounter this form.
W-8IMY (Intermediaries)
This form is for foreign intermediaries and flow-through entities that receive payments on behalf of others. Think of a foreign partnership or trust that collects U.S.-sourced income and passes it through to its partners or beneficiaries. The W-8IMY identifies the intermediary’s role in the payment chain. Like the W-8EXP, this is a specialized form most people will never need.
How Tax Treaty Benefits Work
The United States has income tax treaties with dozens of countries. These treaties often reduce the standard 30% withholding rate on specific types of income. Dividend withholding, for instance, drops to 15% or even 0% under many treaties. Interest and royalty income may also qualify for reduced rates.
When you fill out a W-8BEN or W-8BEN-E, you’ll list your country of residence, cite the specific treaty article that applies, and state the withholding rate you’re claiming. The IRS publishes treaty tables that lay out the applicable rates by country and income type, which can help you determine the correct rate. The payer then uses this information to withhold at the treaty rate instead of the default 30%.
Not every country has a treaty with the U.S., and not every type of income is covered. If no treaty applies, the full 30% withholding stands.
Where You Send It
You do not send a W-8 form to the IRS. Instead, you give it directly to the person or company requesting it, typically the one paying you or managing your account. This could be a U.S. employer, a brokerage firm, a bank, or any other withholding agent. That entity keeps the form in its records and uses it to determine the correct amount of tax to withhold from your payments. The payer is allowed to rely on a properly completed W-8 to treat payments as going to a foreign person and to apply the reduced withholding rate you’ve claimed.
How Long a W-8 Stays Valid
W-8 forms generally remain valid for three years from the date you sign them, expiring on the last day of the third calendar year. So a form signed any time during 2025 would typically expire on December 31, 2028. After that, you’ll need to submit a new one to keep receiving payments at the correct withholding rate.
A W-8 can also become invalid before the three years are up if your circumstances change. Moving to the United States and becoming a U.S. tax resident, for example, would void the form immediately because you’d no longer qualify as a foreign person. A change in your country of residence or tax treaty eligibility would also require a new form. When a W-8 expires or becomes invalid and you don’t replace it, the payer must revert to the default 30% withholding rate.
When You’ll Be Asked for One
You’ll most commonly encounter a W-8 request in a few situations: opening a U.S. investment or brokerage account as a non-resident, doing freelance or contract work for a U.S. company, receiving royalties or licensing fees from a U.S. source, or earning rental income from U.S. property. Banks and brokerages routinely ask foreign account holders for a W-8BEN during account setup. U.S. companies paying foreign contractors will request one before issuing the first payment.
If you’re a U.S. citizen or resident, the W-8 doesn’t apply to you. U.S. persons use the W-9 form instead. The W-8 is exclusively for those who are not U.S. persons for tax purposes.