The W-8BEN form is the document that US companies and platforms ask foreign freelancers to sign before they pay them. If you work from Spain for US clients, you will probably meet it sooner or later. This guide explains what it is and how to fill it in. It also shows how to avoid the mistakes that delay payments.
The short answer: the W-8BEN form certifies that you are a foreign individual, not a US person. As a result, the payer can apply the correct US withholding treatment. First, you fill in your identity, your country of residence and your tax identification number. Then, if it applies, you add a treaty claim. Finally, you sign and date it and give it to the payer, not to the IRS.
Tax forms change, and your case may have special features. This guide is general information, not tax advice. So always read the current IRS instructions for the form. Also, ask a tax adviser if you are unsure about a treaty claim.
Key takeaways: W-8BEN form
- The W-8BEN form is for foreign individuals who receive income from US sources or from US payers.
- You give it to the payer. However, you do not send it to the IRS.
- Use your legal name, permanent address in Spain and Spanish tax identification number.
- Only claim treaty benefits if they apply to your income. After all, most services performed from Spain are not US-source.
- A signed form is generally valid for a limited period. Therefore, update it if your details change.
In this guide
- Key takeaways: W-8BEN form
- What is the W-8BEN form?
- When do US clients ask for a W-8BEN form?
- Before you start: what you need
- How to fill in the W-8BEN form, part by part
- Treaty claims on the W-8BEN form
- How to submit the W-8BEN form and how long it lasts
- Common mistakes to avoid
- What happens if you do not give the form?
- Frequently asked questions about W-8BEN form
- Final thoughts on W-8BEN form
- Sources and further reading
- Related guides
What is the W-8BEN form?
Its official name is «Certificate of Foreign Status of Beneficial Owner for United States Tax Withholding and Reporting (Individuals)». A foreign individual completes it to tell a US payer one thing. Namely, that they are not a US citizen or resident for tax purposes. The payer then keeps it on file. It uses the form to decide how much US tax, if any, to withhold.
Why does it matter? Without it, a US payer may apply a high default withholding rate to payments to a foreign person. Alternatively, it may simply refuse to pay until it receives the form. For context on tax at source, read withholding on foreign payments for freelancers.
When do US clients ask for a W-8BEN form?
Usually, the request comes at one of these moments:
- When you sign a contract with a US company as an individual.
- When you register with a US-based platform or marketplace that pays freelancers.
- Before the first payment from a US client with an accounts payable process.
- When you receive royalties, licensing or other US-source income.
However, you may work through your own company instead of as an individual. In that case, a different form (W-8BEN-E) may apply. So check with the payer and a tax adviser.
Before you start: what you need
To save time, gather these details first:
- Your full legal name as it appears on your passport or ID.
- Your country of citizenship.
- Your permanent residence address in Spain, not a mailbox or a care-of address.
- Your Spanish tax identification number (NIF or NIE).
- Your date of birth.
- The type of income you receive. Also, if you claim a treaty benefit, the relevant article.
How to fill in the W-8BEN form, part by part
The table below shows what to enter in each part.
| Part | What to enter |
|---|---|
| Part I, line 1 | Your name as an individual |
| Part I, line 2 | Country of citizenship |
| Part I, lines 3–4 | Permanent residence address in Spain and mailing address if different |
| Part I, line 5 | US taxpayer identification number (SSN or ITIN) if you have one; most freelancers in Spain do not |
| Part I, line 6 | Foreign tax identifying number: your Spanish NIF or NIE |
| Part I, line 8 | Date of birth |
| Part II | Treaty claim, if relevant: country of residence and the article and rate that apply |
| Part III | Signature, printed name and date |
Line numbers can change between versions of the form. For this reason, check them against the current IRS form before you fill it in.
Treaty claims on the W-8BEN form
Part II lets you claim a reduced rate under a tax treaty. Specifically, it is the treaty between the United States and your country of residence. Whether you need it depends on the income:
- Services you perform from Spain: these generally count as foreign-source income, which is not subject to US withholding. So in many cases you do not need to claim a treaty rate. Even so, the payer still asks for the form.
- Royalties and similar income: these may be US-source, and a treaty may reduce the withholding rate. In that case, fill in Part II with the correct article.
Do not copy a treaty claim from a template, because a wrong claim can cause problems with the payer. If you are unsure, ask a tax adviser who knows both systems.
How to submit the W-8BEN form and how long it lasts
Follow these four steps:
- First, complete the form on a computer or by hand, as the payer requires.
- Sign and date it. Some platforms let you sign electronically.
- Give it to the payer or upload it to the platform. Do not send it to the IRS.
- Finally, keep a copy for your records.
A signed W-8BEN is generally valid from the date you sign. Its validity lasts until the end of the third following calendar year, unless your circumstances change. For example, if your address, residence or tax status changes, give the payer a new form. In addition, many platforms ask you to renew periodically.
Common mistakes to avoid
- Using a mailing address, a hotel or a P.O. box as your permanent address.
- Leaving the foreign tax identification number empty.
- Claiming a treaty benefit that does not apply.
- Forgetting to sign or date the form.
- Using an old version of the form.
- Sending the form to the IRS instead of the payer.
- Not updating the form after moving or changing tax residence.
Once the form is on file, issue your invoice normally. For the next steps, see how to invoice a US client from Spain and how to receive ACH payments from US clients.
What happens if you do not give the form?
The payer may withhold tax at a high default rate. It may also delay or hold payments, or even close your account on a platform. In fact, even when no withholding is due, many payers will not process payments without a valid form. If a payment is on hold, read what to do about an unpaid invoice from a foreign client.
Frequently asked questions about W-8BEN form
What is the W-8BEN form?
It is a US tax form in which a foreign individual certifies their foreign status. As a result, a US payer can apply the correct withholding treatment.
Do I send the W-8BEN form to the IRS?
No. Instead, you give it to the company or platform that pays you. The payer then keeps it on file.
Do I need a US tax number to complete it?
Not always. In fact, many freelancers in Spain have no SSN or ITIN. However, you must provide your foreign tax identification number, such as the Spanish NIF or NIE.
How long is a W-8BEN valid?
Generally, it is valid from the date you sign until the end of the third following calendar year, unless your circumstances change. Also, some platforms ask for renewal more often.
Do I have to claim a treaty benefit?
Only if it applies to your income. For services you perform from Spain, it is often not needed. Still, check with a tax adviser.
Is the W-8BEN the same as the W-8BEN-E?
No. The W-8BEN is for individuals. By contrast, the W-8BEN-E is for entities such as companies.
Final thoughts on W-8BEN form
The W-8BEN form looks intimidating. However, it is a short form once you have your details ready. First, use your legal name, your permanent address in Spain and your Spanish tax number. Then claim a treaty benefit only when it applies. Finally, sign it and give it to the payer. In short, a correct W-8BEN form on file keeps your payments flowing and your US clients happy.
Sources and further reading
Related guides
- How to Invoice a US Client from Spain: VAT, Currency and What to Include
- Withholding on Foreign Payments: When Clients Apply It and What You Can Do
- How to Receive ACH Payments and Wires from US Clients as a Foreign Freelancer
- USD Bank Account for Freelancers Outside the US: Options, Fees and Requirements
Disclaimer: This article is for general information only. It is not tax, legal or financial advice. Rules, fees and thresholds change often and differ by country. Always confirm current details with the tax authority and a qualified adviser. Some links may be affiliate links. This means we may earn a commission at no extra cost to you.