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Illustration for an U.S. LLC article aimed at Substack writers based in Denmark
LLC16 min read

How Substack writers from Denmark Get a U.S. LLC

Danish Substack writers can form a U.S. LLC to manage U.S. tax obligations and Stripe payouts. Learn the requirements, process, and common pitfalls.

Reviewed by , ITIN Specialist at itin.net.

Danish Substack Writers Face Unique U.S. LLC Formation Hurdles

Substack writers in Denmark often encounter a specific friction point when their earnings reach a threshold requiring a U.S. Employer Identification Number (EIN) for tax reporting, especially via Stripe. Unlike U.S. residents, Danish citizens do not have a Social Security Number (SSN), making the process of obtaining an EIN more complex. A U.S. LLC provides a structured business entity to receive these funds and manage U.S. tax obligations, offering personal liability protection. The primary challenge for Danish writers is navigating the U.S. formation process from abroad, including securing a U.S. business address and a registered agent, which are mandatory for any U.S. LLC.

This setup is particularly relevant as platforms like Substack and payment processors like Stripe increasingly require U.S. tax identification numbers for non-U.S. persons receiving payments sourced from U.S. customers. Without a formal U.S. business entity, these writers might face difficulties in compliance, potentially leading to delayed payouts or incorrect tax withholding. Establishing a U.S. LLC is a strategic move to streamline operations and ensure compliance with U.S. tax law, especially given the Denmark–U.S. tax treaty in force, which can affect withholding rates on certain income streams.

While the general process for forming a U.S. LLC is similar for all non-residents, Danish writers specifically need to consider the implications of operating a U.S. entity while residing in Denmark. This includes understanding potential Danish tax implications on income earned through the U.S. LLC, although the U.S. entity itself is designed for pass-through taxation to avoid double taxation. The goal is to create a clear separation between personal income and business income, and to have a compliant structure for receiving U.S.-sourced payments. The U.S. LLC provides this framework, simplifying the reporting required by both U.S. authorities and, potentially, Danish tax authorities.

When U.S. LLC Formation Becomes Necessary for Danish Substack Writers

A U.S. LLC is typically required for Danish Substack writers when they begin receiving significant payouts through U.S.-based platforms or payment processors that mandate a U.S. tax identification number. Stripe, a common processor for Substack, requires users, including non-U.S. residents, to provide either an SSN or an EIN for tax reporting purposes. Since Danish writers do not have an SSN, obtaining an EIN becomes a prerequisite for uninterrupted service and compliance. A U.S. LLC facilitates the acquisition of an EIN and provides a formal business structure for these earnings.

The trigger point often arises when earnings exceed certain thresholds set by platforms or payment processors, or when required by U.S. tax regulations for reporting income effectively connected with a U.S. trade or business. For Substack writers in Denmark, this means that once their newsletter gains traction and generates substantial revenue processed through U.S. channels, establishing a U.S. LLC becomes a practical necessity. This entity allows for the proper reporting of income and expenses, and crucially, offers limited liability protection, separating the writer's personal assets from business liabilities.

Furthermore, a U.S. LLC can simplify the process of opening a U.S. business bank account. Many U.S. banks require a valid EIN and formation documents for a U.S. entity before opening an account. This U.S. business bank account is essential for managing Stripe payouts and other business transactions cleanly, avoiding the commingling of personal and business funds. The formation of a U.S. LLC is therefore not just about tax compliance but also about establishing a robust operational framework for a growing online business.

Essential Documents for Forming a U.S. LLC as a Danish Resident

Forming a U.S. LLC requires specific documentation, regardless of your residency. The foundational document filed with the state is typically called Articles of Organization. This document officially creates the LLC and must be filed with the Secretary of State in the chosen U.S. state. While this document is public, the Operating Agreement is a private, internal document that outlines the ownership and operating procedures of the LLC. It's highly recommended, even for single-member LLCs, as it clarifies roles, responsibilities, and profit/loss distribution.

As a non-resident founder, you will need a copy of your passport to verify your identity. A U.S. business address is also mandatory; this is not a residential address but a physical location within the U.S. where official mail can be received. This is often provided by a formation service or a registered agent. A registered agent is a designated individual or service that agrees to accept legal documents on behalf of the LLC. This entity must have a physical street address in the state of formation and be available during normal business hours.

After the LLC is formed, you will need to obtain an Employer Identification Number (EIN) from the IRS. This is a nine-digit number used to identify a business entity. The application for an EIN is made using Form SS-4. For non-U.S. residents without an SSN, this application must be faxed or mailed to the IRS. The process can take several weeks. The itin.net Standard LLC service provides the necessary formation documents and helps secure a U.S. business address and registered agent. The non-resident LLC bundle includes the EIN application and the Operating Agreement, simplifying these essential steps for Danish writers. It is also critical to be aware of the annual Form 5472 filing requirement, which reports transactions between a U.S. LLC and its foreign owner. This form has significant penalties for non-compliance.

The U.S. LLC Formation and EIN Application Timeline for Danish Writers

The process of forming a U.S. LLC for a Danish writer typically takes between 5 to 10 business days for state filing, depending on the state chosen. Some states offer expedited filing options, which can result in same-day or next-day formation. Once the LLC is officially formed and you have your formation documents, the next step is to apply for an EIN. For non-U.S. residents without an SSN, applying for an EIN requires submitting Form SS-4 via fax or mail to the IRS.

This IRS step can add an additional 4 to 10 weeks to the overall timeline, as processing times for mailed or faxed applications are significantly longer than online submissions. It's crucial to accurately complete Form SS-4, ensuring all details match your LLC formation documents and passport. Errors can lead to delays or rejection, necessitating a re-submission. The IRS will issue a CP-575 notice once the EIN is assigned.

Once you have your EIN, you can proceed to open a U.S. business bank account. Many U.S. banks require the EIN and formation documents to open an account. Services like Mercury, Relay, or Brex cater to non-resident founders and can facilitate this process. Having a dedicated U.S. business bank account is vital for managing Stripe payouts and other business transactions cleanly. The entire process, from initiating LLC formation to having a functional U.S. business bank account with an EIN, can take approximately 6 to 14 weeks, depending heavily on the IRS processing times for the EIN application. itin.net streamlines the LLC formation and can assist with the EIN application process for non-residents.

Common Pitfalls for Danish Substack Writers Forming a U.S. LLC

Danish Substack writers often overlook the annual U.S. tax filing requirements associated with their U.S. LLC. A critical requirement is filing Form 5472, an informational return detailing transactions between a U.S. company and a foreign owner. Failure to file this form on time can result in substantial penalties, often $10,000 or more per violation. This is a common oversight for non-resident business owners unfamiliar with U.S. tax compliance.

Another frequent mistake is choosing a state for LLC formation that imposes significant franchise taxes or has complex nexus requirements without fully understanding the implications. For instance, forming an LLC in California or New York can lead to substantial annual tax liabilities, even if the business has minimal physical presence there. It's important to select a state like Delaware, Wyoming, or Nevada, which are generally more tax-friendly and business-friendly for non-residents, or consult with a tax professional to determine the most suitable state based on your specific circumstances.

Skipping the creation of an Operating Agreement is another common pitfall. While not always required by the state, a well-drafted Operating Agreement is crucial for maintaining the limited liability status of the LLC and can prevent future disputes among partners. It clearly defines ownership percentages, profit and loss allocations, and management responsibilities. For Danish writers, ensuring this document aligns with any personal tax planning in Denmark is also advisable. Finally, failing to properly maintain the LLC's status by not paying annual state fees or neglecting the registered agent service can lead to the dissolution of the LLC by the state, jeopardizing the liability protection and tax benefits.

The Certified Acceptance Agent (CAA) Advantage for Danish LLC Formation

A Certified Acceptance Agent (CAA) plays a vital role in simplifying the ITIN application process for non-U.S. residents. While this post focuses on LLC formation, many Substack writers will eventually need an ITIN to file their U.S. personal tax return (Form 1040-NR) if they have U.S.-sourced income not fully covered by withholding or treaty benefits, or if they want to claim treaty benefits. itin.net operates as a CAA, meaning we are authorized by the IRS to assist applicants in the ITIN process.

As a CAA, itin.net can help verify your original identification documents, such as your passport, in person. This eliminates the need for you to mail your original, irreplaceable documents to the IRS, which can take months to be returned. Instead, the CAA reviews your documents and forwards a certified copy along with your Form W-7 application to the IRS. This significantly speeds up the process and provides peace of mind that your original documents are safe.

While the LLC formation itself doesn't directly involve the CAA role, the ITIN application often does. For Danish writers establishing a U.S. presence, having a trusted CAA like itin.net available can streamline multiple aspects of U.S. compliance. This service is particularly valuable for individuals who find the IRS procedures daunting or who prefer a guided approach to ensure accuracy and efficiency. The benefit is a more secure and often faster path to obtaining the necessary U.S. tax identification numbers.

Next Steps After Forming Your U.S. LLC

After successfully forming your U.S. LLC, the immediate next step is to obtain your Employer Identification Number (EIN) from the IRS. This is a critical step for tax compliance and for opening a U.S. business bank account. Remember that for non-U.S. residents, this involves submitting Form SS-4 via fax or mail, which can take several weeks to process. Ensure all details are accurate to avoid delays.

Once you have your EIN, open a dedicated U.S. business bank account. This account will be used to receive your Stripe payouts from Substack and manage all business-related expenses. Having a separate bank account is essential for maintaining clear financial records and upholding the limited liability status of your LLC. Consider U.S. banks or financial services like Mercury, Relay, or Brex that cater to international founders.

Finally, ensure you understand and comply with all ongoing U.S. tax obligations. This includes filing the annual Form 5472 and any other required federal or state tax returns. Due to the complexities of international taxation and U.S. business law, it is highly advisable to consult with a qualified tax professional or attorney experienced with non-resident business owners. They can provide personalized advice based on your specific situation in Denmark and your U.S. business activities. For assistance with your U.S. LLC formation and EIN application, review the services offered by itin.net or contact us for personalized guidance.

Practical tips

  • Use the same legal name across your passport, LLC formation documents, and any prior IRS correspondence. Mismatched name fields are a primary reason for delays or rejections in EIN and ITIN applications.
  • Choose a U.S. state for LLC formation that does not impose significant franchise taxes or requires extensive nexus for non-resident owners. Delaware, Wyoming, and Nevada are common choices for their business-friendly laws.
  • Maintain a clear separation between your personal Danish finances and your U.S. LLC's finances. Use your U.S. business bank account exclusively for business transactions, including receiving Stripe payouts.
  • File Form 5472 annually to report transactions between your U.S. LLC and yourself as the foreign owner. The penalty for non-compliance is substantial ($10,000+).
  • Consult with a Danish tax advisor to understand any potential Danish tax implications of operating a U.S. LLC and receiving income through it.

Frequently asked questions

Do I need a U.S. address to form a U.S. LLC as a resident of Denmark?

Yes, you need a U.S. business address for your LLC's registered agent and for official mail. This can be a service provided by your LLC formation company, such as itin.net, and does not need to be your personal residential address.

How long does it take to get an EIN for my U.S. LLC from Denmark?

For non-U.S. residents without an SSN, applying for an EIN using Form SS-4 via fax or mail can take 4 to 10 weeks. This is in addition to the 5-10 business days for the LLC formation itself.

Can I open a U.S. bank account with a Danish passport and a U.S. LLC?

Yes, once you have your U.S. LLC formation documents and an EIN, you can open a U.S. business bank account. Several banks and financial services cater to non-residents, but requirements can vary. Services like Mercury, Relay, or Brex are often recommended for international founders.

Will forming a U.S. LLC affect my taxes in Denmark?

It is possible. While a U.S. LLC offers pass-through taxation for U.S. purposes, Danish tax authorities may have specific rules regarding income earned through foreign entities. You should consult with a Danish tax professional to understand your obligations.

What is Form 5472, and why is it important for my U.S. LLC?

Form 5472 is an IRS informational return required for U.S. companies with a single foreign owner. It reports transactions between the U.S. company and its foreign owner. Failure to file this form by the deadline can result in significant penalties, typically starting at $10,000 per violation.

Do I need an ITIN if I have an EIN for my U.S. LLC?

An EIN is for your business entity, while an ITIN (Individual Taxpayer Identification Number) is for individuals. You may need an ITIN if you are required to file a U.S. personal tax return (like Form 1040-NR) and do not have an SSN. Having an EIN does not automatically grant you an ITIN.

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