Substack writers in Türkiye face unique ITIN requirements for U.S. income
Substack writers based in Türkiye earning U.S. dollar payments from the platform face a specific tax reporting trigger. When Stripe, which processes payouts for many international Substack creators, requires a U.S. taxpayer identification number for Form 1099-NEC reporting, U.S. tax obligations arise. This is distinct from other non-residents because the income source is directly tied to a U.S.-based platform and payment processor. Without a Social Security Number (SSN), the Individual Taxpayer Identification Number (ITIN) becomes the necessary document to maintain compliance and avoid potential issues with payment processors or future U.S. tax filings. The Türkiye–U.S. tax treaty, while beneficial for avoiding double taxation on certain income types, does not eliminate the reporting requirement when U.S. source income is involved. Understanding this specific intersection of platform requirements and U.S. tax law is the first step for writers in Türkiye seeking to manage their U.S. tax obligations effectively.
When an ITIN is required for Türkiye-based Substack writers
An ITIN is required for Substack writers in Türkiye when their U.S. dollar earnings reach a threshold that necessitates U.S. tax reporting by the payment processor, typically Stripe. U.S. tax law mandates that platforms like Stripe report payments made to foreign individuals who are considered to be engaged in a U.S. trade or business, or who receive certain types of U.S. source income. For Substack writers, this usually materializes when they need to provide a U.S. taxpayer identification number on payment forms to avoid backup withholding. The IRS requires individuals without an SSN who have a U.S. tax filing obligation to obtain an ITIN. This includes non-resident aliens earning income from U.S. sources, such as royalties or service fees paid by a U.S. entity or through a U.S.-based platform. For writers in Türkiye, this means that once Stripe requests a taxpayer ID, applying for an ITIN becomes a necessity to continue receiving uninterrupted payouts and to comply with U.S. tax regulations. The ITIN serves as the unique identifier for tax purposes, similar to how an SSN functions for U.S. citizens and residents.
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 personal information, including your name, address, and foreign tax identification number if applicable. You must also submit original documentation or certified copies of documents that verify your identity and foreign status. The most commonly accepted document for this purpose is a valid passport. If a passport is not available, other documents may be accepted, such as a national identity card, birth certificate, or driver's license, provided they meet specific IRS requirements. Crucially, you must also include a U.S. federal income tax return for the year you are claiming the ITIN, unless you qualify for a filing exception. For many Substack writers, this will be the tax return associated with the income that triggered the need for the ITIN. Ensure all documents are current and accurately reflect your legal name as it appears on your passport or national identity card. Mismatched names are a frequent cause of application delays.
The ITIN application process and timeline
The ITIN application process begins with completing Form W-7 and gathering your supporting documentation, including a U.S. federal income tax return. You have two primary options for submitting your application. The most common and recommended method for individuals in Türkiye is to apply through a Certified Acceptance Agent (CAA). These agents, authorized by the IRS, can verify your original documents and forward your application directly to the IRS, typically saving you the risk of mailing originals. The second option is to mail your application package, including original documents or certified copies, directly to the IRS ITIN Operation in Austin, Texas. Once the IRS receives your application, processing can take a significant amount of time. When filed via a CAA, the typical timeline is 5–10 business days for the application to be submitted and for you to receive confirmation. However, the IRS processing of the ITIN itself can take up to 17 weeks or longer, especially during peak tax seasons. Mailing directly to the IRS adds considerable time due to mail transit and the IRS's backlog. It is advisable to apply well in advance of any tax deadlines.
Common ITIN mistakes for Türkiye-based Substack writers
Substack writers in Türkiye often encounter specific errors when applying for an ITIN. A frequent issue is failing to include a complete U.S. federal income tax return with the Form W-7. This return must correspond to the tax year for which you are seeking the ITIN, unless an exception applies. Another common pitfall is submitting incomplete or incorrect personal information on the Form W-7, especially regarding name discrepancies between the form and supporting identification documents like your passport. For those utilizing treaty benefits, incorrect treaty claims, such as selecting the wrong article or failing to meet residency requirements for treaty purposes, can lead to rejection. Additionally, mailing original identification documents directly to the IRS carries the risk of loss or damage, which can be avoided by using a Certified Acceptance Agent (CAA). Ensure you are claiming the correct tax status and that your supporting documents are valid and unexpired. The IRS requires clear, legible copies or certified originals of all submitted documents.
Benefits of using a Certified Acceptance Agent (CAA)
Applying for an ITIN through a Certified Acceptance Agent (CAA) offers distinct advantages for Substack writers in Türkiye. A CAA, like itin.net, is an IRS-authorized entity that can authenticate your original identification documents and certify that they meet IRS standards. This means you do not have to mail your original passport or other vital documents directly to the IRS, significantly reducing the risk of loss or damage. The CAA reviews your Form W-7 and supporting documents for completeness and accuracy before submitting the package to the IRS on your behalf. This pre-screening process helps to minimize errors that could lead to delays or rejections. Furthermore, CAAs can often expedite the initial submission process, ensuring your application reaches the IRS promptly. While the IRS processing time for the ITIN itself remains outside the CAA's control, using a CAA streamlines the initial application steps and provides peace of mind that your documentation is handled correctly. This service is particularly valuable for international applicants who may not be familiar with IRS procedures or who prefer not to send irreplaceable documents through international mail. For businesses and individuals in Türkiye, engaging with a CAA simplifies the path to obtaining an ITIN.
Next steps after obtaining your ITIN
Once you receive your ITIN from the IRS, typically in the form of a notification letter, you can use it for all future U.S. tax filings. This includes filing your annual U.S. federal income tax return (e.g., Form 1040-NR for non-residents) and any other required tax forms. For Substack writers, the ITIN will be essential for reporting your U.S. dollar income accurately to both the IRS and potentially Turkish tax authorities, depending on your tax residency status and local regulations. If you are also considering establishing a U.S. business entity, such as a U.S. LLC, the ITIN can be used in that process as well. Many international founders also use their ITIN to open a U.S. bank account, which can streamline financial operations. Remember that an ITIN is for tax reporting purposes only and does not grant work authorization or eligibility for Social Security benefits. It is crucial to keep your ITIN information secure and to use it accurately on all tax-related documents. If you require assistance with the ITIN application process, itin.net offers comprehensive support. You can review our Standard Package pricing or contact us for personalized guidance.
Practical tips
- Use the exact same legal name across Form W-7, your passport, and any prior IRS correspondence; name mismatches are the most common reason for ITIN application rejection.
- Ensure your submitted U.S. federal income tax return is complete and accurate for the tax year you are claiming the ITIN, unless you qualify for a specific exception.
- When applying through a Certified Acceptance Agent (CAA), you will not need to mail your original identification documents to the IRS, thus mitigating the risk of loss or damage.
- Verify that all supporting identification documents (e.g., passport) are current and valid; expired documents will not be accepted by the IRS.
- If you are claiming a tax treaty benefit, confirm you meet all eligibility requirements and correctly identify the applicable treaty article on your tax return and Form W-7.
Frequently asked questions
Do I need an ITIN if I am a Substack writer in Türkiye but my earnings are below the Stripe threshold?
If your earnings are below the threshold that requires Stripe to report your income to the IRS via Form 1099-NEC, and you do not have any other U.S. tax obligations, you likely do not need an ITIN at this time. However, it is advisable to monitor platform requirements and U.S. tax regulations, as thresholds can change.
How long does it take to get an ITIN if I apply through itin.net?
When you apply through a Certified Acceptance Agent (CAA) like itin.net, your application is submitted promptly. While the CAA verifies your documents and submits the application within days, the IRS processing time for the ITIN itself can take up to 17 weeks or longer, depending on IRS workload and the time of year.
Can I use my Turkish national ID card instead of a passport for my ITIN application?
A valid passport is the preferred identification document for ITIN applications. If a passport is not available, other documents like a national identity card may be accepted, but they must meet specific IRS criteria for identity and foreign status verification. It is best to confirm with a Certified Acceptance Agent or the IRS if your specific national ID card will be accepted.
What happens if my ITIN application is rejected?
If your ITIN application is rejected, the IRS will send you a letter explaining the reason for the denial. Common reasons include missing documentation, incorrect information, or an incomplete tax return. You will typically have the opportunity to correct the errors and resubmit your application.
Does my ITIN expire?
An ITIN generally does not expire. However, the IRS may deactivate ITINs that have not been used on a federal tax return for three consecutive tax years. If your ITIN is deactivated, you can reapply by submitting a new Form W-7 with your tax return.
Do I need an ITIN to open a U.S. bank account for my Substack earnings?
While some U.S. banks may allow non-residents to open accounts without an ITIN, many require a U.S. taxpayer identification number, such as an ITIN, especially if you are receiving U.S. source income. An ITIN can facilitate opening a U.S. bank account and managing your Substack payouts more efficiently.



