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ITIN15 min read

ITIN Tips for Upwork freelancers from Belgium

Upwork freelancers in Belgium need an ITIN to comply with U.S. tax obligations. Learn the requirements, application process, and common pitfalls to avoid.

Reviewed by , ITIN Specialist at itin.net.

Why Upwork Freelancers in Belgium Need an ITIN

Upwork freelancers in Belgium face a specific challenge when earning income from U.S. clients. While you are a Belgian tax resident, U.S. clients often require you to complete IRS tax forms to report your income and potentially reduce U.S. tax withholding. For individuals without a U.S. Social Security Number (SSN), the Individual Taxpayer Identification Number (ITIN) serves as the primary identifier for U.S. tax purposes. Without an ITIN, you may face higher withholding rates on your U.S. source income, impacting your net earnings. This is particularly relevant for Upwork freelancers who may receive Form 1099-NEC or similar tax documents from their U.S. clients, necessitating accurate tax reporting to both Belgian and U.S. authorities.

When an ITIN is Required for Belgian Freelancers

An ITIN is primarily required when you have a U.S. tax filing obligation and cannot obtain an SSN. For Upwork freelancers in Belgium, this typically arises in two main scenarios. First, if you are receiving payments exceeding certain thresholds from U.S. clients and they require you to fill out a Form W-8BEN to certify your foreign status and potentially claim treaty benefits, an ITIN might be requested by the client or platform to properly identify you for tax reporting purposes. Second, if you are required to file a U.S. tax return (such as Form 1040-NR for non-resident aliens with U.S. source income), you will need an ITIN to file that return. The Belgian–U.S. tax treaty may allow you to reduce or eliminate U.S. tax on certain income, but you still need to file the appropriate U.S. tax forms, which necessitates an ITIN. Without an ITIN, you may be subject to a default 30% U.S. withholding tax on certain payments, which can be reduced by claiming treaty benefits on your tax return.

Required Documents for Your ITIN Application

To apply for an ITIN, you must submit Form W-7, Application for IRS Individual Taxpayer Identification Number. This form requires specific personal and tax information. Alongside Form W-7, you must provide original or certified copies of documents verifying your identity and foreign status. The most commonly accepted primary document is a valid passport. If a passport is not available, other identification documents like a national identity card, birth certificate, or driver's license may be used, but these must be accompanied by a secondary identifying document such as a foreign driver's license or a U.S. visa. Crucially, you must also include supporting tax documentation. For Upwork freelancers in Belgium, this often means attaching a copy of your U.S. federal income tax return (e.g., Form 1040-NR) for which the ITIN is needed. If you are claiming treaty benefits under the Belgium–U.S. tax treaty, ensure your tax return accurately reflects this claim. Failure to provide complete and accurate documentation is a leading cause of application delays or rejections.

The ITIN Application Process for Belgian Freelancers

The ITIN application process begins with completing Form W-7. You must accurately fill in all sections, including your name, address, and tax identification information. Once Form W-7 is completed, you will need to gather your supporting documents: your original or certified identification documents and a copy of your U.S. tax return. You have three options for submitting your application. You can mail your original documents directly to the IRS, but this carries the risk of losing valuable original identification. Alternatively, you can visit an IRS Taxpayer Assistance Center (TAC) that offers ITIN application services, though appointments are often limited and require significant advance booking. The most efficient method for most applicants, especially those in Belgium, is to use a Certified Acceptance Agent (CAA). A CAA, like itin.net, can verify your original documents, ensuring they are returned to you promptly, and submit your application package to the IRS on your behalf. When applying through a CAA, the typical processing time for the IRS to issue an ITIN is between 5–10 business days after the application is received by the IRS. However, IRS processing times can fluctuate based on application volume.

Common Mistakes for Upwork Freelancers in Belgium

Upwork freelancers in Belgium often make specific errors when applying for an ITIN. A frequent issue is an incomplete or inaccurate Form W-7, particularly with name discrepancies. Ensure the name on your Form W-7 exactly matches your passport or other identification documents. Another common pitfall is failing to include the correct supporting tax return. If you are filing a U.S. tax return for the first time with your ITIN application, ensure it is complete and signed. Incorrectly claiming treaty benefits under the Belgium–U.S. tax treaty is also a common mistake; ensure you understand which articles apply to your specific income and correctly report this on your tax return. Some freelancers mistakenly believe an ITIN is only for U.S. residents; remember, it's for anyone with a U.S. tax obligation, regardless of their residency. Finally, attempting to send original identification documents directly to the IRS without using a CAA or TAC can lead to the loss of these vital documents, causing significant inconvenience.

Benefits of Using a Certified Acceptance Agent (CAA)

Using a Certified Acceptance Agent (CAA) significantly streamlines the ITIN application process. As a CAA, itin.net can authenticate your original identification documents, such as your passport, meaning you do not have to mail them to the IRS. This provides peace of mind and avoids the risk of losing irreplaceable documents. Furthermore, a CAA reviews your entire application package, including Form W-7 and your supporting tax return, to ensure accuracy and completeness before submission to the IRS. This pre-screening process helps to minimize errors that could lead to delays or rejections. For Upwork freelancers in Belgium, this means a more secure and efficient path to obtaining your ITIN, allowing you to meet your U.S. tax obligations with greater confidence. The typical timeline for an ITIN via a CAA is faster because the application is less likely to be returned for simple errors. The cost for this service is an investment in accuracy and security, with itin.net's Standard Package priced at $497.

Next Steps After Obtaining Your ITIN

Once you receive your ITIN from the IRS, typically via IRS notice CP-565, you can use it for all future U.S. tax filings and U.S. related financial activities. This includes filing your annual U.S. tax return and providing the number to U.S. clients or platforms as required. If you are setting up a U.S. business entity, such as a U.S. LLC, an ITIN can be used in place of an SSN for certain applications, though an Employer Identification Number (EIN) might be more appropriate for business operations. For Upwork freelancers, having an ITIN ensures compliance and can facilitate opening a U.S. bank account if needed for receiving payments more efficiently. Review the ITIN renewal process if your number expires, and always keep records of your U.S. tax filings. For assistance with your ITIN application or ongoing U.S. tax compliance, consider contacting itin.net for expert guidance. You can review our pricing or reach out through our contact page.

Practical tips

  • Ensure the legal name on your Form W-7 precisely matches your passport or national identity card to prevent application delays.
  • If you are claiming tax treaty benefits under the Belgium–U.S. treaty, carefully review the relevant treaty articles and ensure your U.S. tax return accurately reflects these claims.
  • Always use original or certified copies of your identification documents when applying via a Certified Acceptance Agent (CAA) to ensure they are properly authenticated.
  • Keep a copy of your submitted Form W-7 and all supporting documents for your personal records, along with the IRS ITIN assignment letter (CP-565).
  • If you have previously filed U.S. taxes or held a U.S. tax ID, ensure all information provided on Form W-7 is consistent with prior filings to avoid identity verification issues.

Frequently asked questions

Do I need an ITIN if I only work for U.S. clients through Upwork and live in Belgium?

You likely need an ITIN if you have a U.S. tax filing obligation. This often occurs when your U.S. client or platform requires a Form W-8BEN to reduce withholding, or if you have U.S. source income that requires you to file a U.S. tax return (like Form 1040-NR). Even if no tax is ultimately due to the U.S. due to the Belgium–U.S. tax treaty, an ITIN is usually necessary to claim those treaty benefits on a U.S. tax return.

Can I use my Belgian national ID card instead of my passport for my ITIN application?

A valid passport is the preferred document for ITIN applications. However, if a passport is not available, other documents like a national identity card or birth certificate may be accepted as proof of identity and foreign status, but they must be accompanied by a secondary identifying document. It is best to check the IRS guidelines or consult with a Certified Acceptance Agent (CAA) for the most up-to-date list of acceptable documents.

How long does it take to get an ITIN through a Certified Acceptance Agent (CAA)?

When you apply through a Certified Acceptance Agent (CAA) like itin.net, your application is pre-screened for accuracy. The IRS typically processes applications submitted by CAAs within 5–10 business days. This is significantly faster than mailing your application directly to the IRS, which can take much longer due to potential errors and the IRS's internal processing times.

What is the difference between an ITIN and an EIN for a Belgian freelancer on Upwork?

An ITIN (Individual Taxpayer Identification Number) is for individuals who must file U.S. taxes but don't have an SSN. An EIN (Employer Identification Number) is for businesses, including U.S. LLCs, corporations, and partnerships. As an Upwork freelancer, you are likely an individual, so you'll need an ITIN. If you later form a U.S. LLC to structure your freelance business, you would then apply for an EIN.

Will applying for an ITIN affect my tax status in Belgium?

No, obtaining an ITIN for U.S. tax purposes does not alter your tax residency status in Belgium. Belgium remains your country of tax residence, and you will continue to file your taxes there. The ITIN is solely for fulfilling your obligations with the U.S. Internal Revenue Service (IRS).

What if my Upwork payments are small? Do I still need an ITIN?

The requirement for an ITIN is generally tied to having a U.S. tax filing obligation or a need to certify your foreign status for U.S. tax purposes, rather than solely the amount of income. Even small amounts of U.S. source income can trigger reporting requirements. It's advisable to consult the IRS guidelines or a tax professional to determine if your specific situation necessitates an ITIN, especially if you are using Form W-8BEN or filing a U.S. tax return.

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