Substack Writers in Chile Face Unique U.S. Tax Reporting Triggers
Substack writers based in Chile commonly encounter U.S. tax reporting obligations due to how their earnings are processed. Stripe, the payment processor frequently used by platforms like Substack, requires a U.S. taxpayer identification number for payments to non-U.S. persons earning U.S.-sourced income. This means that as a Chilean writer receiving payments from U.S.-based readers or advertisers, you will likely need to provide either an EIN (Employer Identification Number) or an ITIN (Individual Taxpayer Identification Number) to Stripe to avoid backup withholding and ensure proper tax compliance. While some may consider forming a U.S. LLC, the most direct path for an individual receiving freelance income is typically the ITIN. This requirement stems from U.S. tax law, which mandates reporting for income sourced within the United States, regardless of the recipient's residency. For Chilean writers, this often means engaging with U.S. tax forms and requirements for the first time, creating a specific friction point not typically experienced by residents of countries with less integrated digital economies or different payment processing norms. The distinction lies in the combination of the platform (Substack), the payment processor (Stripe), and the country of residence (Chile), all converging to necessitate a U.S. tax ID. Without this, Stripe may withhold a significant portion of your earnings, and you may struggle to receive your full payout.
When You Need an ITIN as a Chilean Substack Writer
An ITIN becomes necessary for Chilean Substack writers primarily when U.S. tax reporting thresholds are met through their earnings. Stripe, in its role as a payment facilitator, will issue Form 1099-NEC or 1042-S to individuals who earn above certain thresholds from U.S. sources. To accurately report this income to the IRS and to avoid backup withholding (currently at 24% for most payments), you must provide a U.S. taxpayer identification number. For individuals, this is the ITIN. Even if you don't receive a 1099-NEC or 1042-S, you are still obligated to report U.S.-sourced income on a U.S. tax return, such as Form 1040-NR (U.S. Nonresident Alien Income Tax Return). The ITIN is the unique identifier used for this purpose. Furthermore, if you are claiming benefits under the Chile–U.S. tax treaty to reduce U.S. withholding taxes on certain types of income, an ITIN is often required to substantiate these claims with the IRS and the payer. The need for an ITIN is triggered by the nature and source of your income, not your residency status alone, making it a critical document for international digital creators.
Essential Documents for Your ITIN Application
To apply for an ITIN, you will need to complete IRS Form W-7, Application for IRS Individual Taxpayer Identification Number. This form requires specific personal information and documentation to verify your identity and foreign status. The IRS mandates that you provide original or certified copies of documents that prove both your identity and your foreign status. The most commonly accepted document for both is a valid, unexpired passport. If you do not have a passport, a combination of other documents may be accepted, such as a national identity card, a birth certificate, a foreign driver's license, or a visa, along with a separate document proving your identity. Crucially, all submitted documents must clearly show your name, photograph (if applicable), date of birth, address, and expiration date. For Substack writers from Chile, ensuring your passport is current and contains the exact legal name you use in all your financial and tax dealings is paramount. Any discrepancies can lead to delays or rejection of your application. Alongside the Form W-7, you will need to submit a completed U.S. federal tax return for which the ITIN is needed, unless you qualify for an exception (e.g., certain treaty benefits).
The ITIN Application Process: What to Expect
The ITIN application process involves several key steps, with the timeline heavily dependent on your chosen submission method. You must first complete Form W-7 accurately and attach a U.S. federal tax return. There are three primary ways to submit your application: by mail directly to the IRS, by visiting an IRS Taxpayer Assistance Center (TAC) that offers these services, or by using a Certified Acceptance Agent (CAA). Mailing your application directly to the IRS involves sending your original supporting documents and tax return to the IRS ITIN Operation in Austin, Texas. This method typically has the longest processing time, often taking 10–12 weeks or more, and carries the risk of losing original documents. Visiting an IRS TAC requires an appointment and can also involve significant wait times. The most efficient method is through a CAA, like itin.net. A CAA can verify your original documents and forward your application to the IRS, significantly speeding up the process. When filing through a CAA, you can expect your ITIN to be assigned in approximately 7–10 business days after the IRS receives your application package. The IRS will then mail you a notification letter with your assigned ITIN, typically followed by a CP-565 notice.
Common Mistakes for Chilean Substack Writers
Substack writers in Chile applying for an ITIN often make specific errors related to their income and documentation. A frequent mistake is failing to submit a complete and accurate U.S. federal tax return along with the Form W-7. This return must be the one for which you need the ITIN, often a Form 1040-NR for non-resident aliens. Another common pitfall is submitting incomplete or expired identification documents. Ensure your passport or national ID is valid and that the name on all documents precisely matches your Form W-7 and tax return. Misunderstanding U.S. tax treaty benefits can also lead to incorrect claims on your tax return, potentially causing delays or rejections. For example, claiming treaty benefits without properly understanding the articles applicable to royalties or digital services income can be problematic. Lastly, some writers attempt to form a U.S. LLC without fully understanding the implications or the need for an ITIN/EIN for that entity, which can add complexity and cost. It's crucial to ensure your tax return accurately reflects your Substack income and any applicable treaty provisions.
Benefits of Using a Certified Acceptance Agent (CAA)
Utilizing a Certified Acceptance Agent (CAA), such as itin.net, offers distinct advantages for Substack writers in Chile applying for an ITIN. A CAA is an individual or entity authorized by the IRS to assist applicants in obtaining an ITIN. The primary benefit is that a CAA can authenticate your original identification documents, such as your passport. This means you do not have to mail your original, irreplaceable documents to the IRS, mitigating the risk of loss or damage. Instead, you present your originals to the CAA, who then forwards certified copies with your application. This verification process significantly streamlines the application. Furthermore, CAAs are trained in ITIN application procedures and can help ensure your Form W-7 and accompanying tax return are completed correctly, reducing the likelihood of common errors that lead to delays. The typical processing time when using a CAA is substantially shorter, often around 7–10 business days for the IRS to assign the ITIN, compared to potentially 10–12 weeks or more when applying directly by mail. This efficiency is particularly valuable for individuals who need their ITIN promptly to comply with payment processor requirements.
Next Steps After ITIN Application
Once your ITIN application is approved, the IRS will mail you a CP-565 notice containing your nine-digit Individual Taxpayer Identification Number. This is the official confirmation from the IRS. With your ITIN in hand, you can now provide it to Stripe or any other entity that requires it for U.S. tax reporting. This will allow Stripe to process your payments without backup withholding. You may also need your ITIN to file your U.S. federal income tax return (Form 1040-NR) for the relevant tax year. If you are considering other U.S. business ventures, such as forming a U.S. LLC, the ITIN can be a stepping stone, though an EIN might be more appropriate for a business entity. For Substack writers in Chile, securing your ITIN is a critical step towards seamless U.S. income management. Review the itin.net Standard Package pricing at $497 or contact us for personalized assistance to ensure your application is processed efficiently and correctly.
Practical tips
- Use the exact same legal name on your Form W-7, your passport, and any prior IRS correspondence. Mismatched name fields are the most common rejection reason.
- Ensure your submitted U.S. tax return is complete and accurate, including any required schedules or treaty claim forms (e.g., Form 8833 if required). Incomplete returns are a primary cause for ITIN denial.
- If you are mailing original documents, send them via a trackable and insured method. Consider using a Certified Acceptance Agent (CAA) to avoid mailing originals altogether.
- Double-check the mailing address for the IRS ITIN Operation in Austin, Texas, as it can change. Using a CAA bypasses this potential issue.
- Understand the specific U.S. tax treaty articles applicable to your income source (e.g., royalties for content creation) to correctly claim any reduced withholding rates on your tax return.
Frequently asked questions
Can I use my Chilean RUT as a substitute for an ITIN?
No, your Chilean RUT (Rol Único Nacional) is a national identification number and cannot be used for U.S. tax purposes. The IRS requires a U.S. taxpayer identification number, which for individuals who cannot obtain an SSN is the ITIN.
How long does it take to get an ITIN after applying through itin.net?
When you apply through a Certified Acceptance Agent (CAA) like itin.net, the IRS typically assigns your ITIN within 7–10 business days after they receive your complete application package. You will then receive a notification letter from the IRS.
What if my passport has expired?
An expired passport is generally not accepted as a valid identification document for an ITIN application. You must submit a valid, unexpired primary identification document, with a passport being the preferred option.
Do I need an ITIN if I am forming a U.S. LLC as a Chilean resident?
If you form a U.S. LLC, the entity itself will need an EIN (Employer Identification Number), not an ITIN. However, if you are personally receiving income that requires U.S. tax reporting before or outside of the LLC structure, you would still need an ITIN. The LLC will also have its own U.S. tax filing requirements, potentially including filing Form 5472.
Can I apply for an ITIN and my U.S. tax return at the same time?
Yes, you must submit a completed U.S. federal tax return with your Form W-7 application, unless you qualify for a specific exception. The ITIN is assigned for the purpose of processing that tax return.
Will I have to pay U.S. taxes on my Substack income even if I live in Chile?
As a Chilean resident earning income from U.S. sources (like Substack payments processed via Stripe), you are generally required to report this income on a U.S. tax return (Form 1040-NR). The Chile–U.S. tax treaty may allow you to claim reduced withholding or avoid double taxation, but reporting is still necessary. An ITIN facilitates this.



