Skip to main content
itin.net
Illustration for an U.S. LLC article aimed at foreign partners in a US LLC based in Bulgaria
LLC15 min read

How foreign partners in a US LLC from Bulgaria Get a U.S. LLC

Foreign partners in a U.S. LLC from Bulgaria face unique tax and ITIN requirements. Learn how to form your U.S. LLC and secure your ITIN for compliance.

Reviewed by , ITIN Specialist at itin.net.

Why Foreign Partners in a U.S. LLC from Bulgaria Need a Specific Approach

Foreign partners in a U.S. LLC from Bulgaria face specific hurdles when setting up their entity and managing U.S. tax obligations. Unlike U.S. residents, you need to navigate U.S. formation requirements without a U.S. Social Security Number (SSN). This often leads to a crucial need for an Individual Taxpayer Identification Number (ITIN) to comply with IRS reporting, especially when the LLC is taxed as a partnership. The primary friction point is the requirement for an ITIN to receive income reporting documents like Schedule K-1 and Form 1042-S, which are essential for accurate tax filing in both the U.S. and Bulgaria. The Bulgaria-U.S. tax treaty offers potential benefits, but understanding its application requires careful attention to U.S. tax forms and procedures. Forming a U.S. LLC is straightforward for non-residents, but the subsequent tax compliance, particularly for multi-member LLCs, necessitates specific documentation and identification.

This process differs significantly from a U.S.-based founder's journey. You will not have an SSN to use for tax purposes or for opening U.S. bank accounts. The IRS uses the ITIN as a substitute for the SSN for non-resident aliens who have U.S. tax obligations but do not qualify for an SSN. For foreign partners in a U.S. LLC, securing an ITIN is often a prerequisite for fulfilling U.S. tax reporting duties. This is especially true when your LLC is treated as a partnership for U.S. tax purposes, requiring each partner to report their share of the LLC's income. Without an ITIN, you cannot properly file your U.S. tax returns, which can lead to penalties and interest.

The absence of an SSN also impacts other essential business operations. For instance, opening a U.S. bank account can be challenging without an ITIN or SSN. While some banks may have specific programs for non-residents, most will require one of these identification numbers. This is why understanding the ITIN application process in conjunction with your U.S. LLC formation is vital. The formation of the U.S. LLC itself is a separate step from obtaining your personal tax identification number, but they are intrinsically linked for operational and compliance purposes. The goal is to establish your U.S. business entity and ensure you have the necessary personal identification to manage its U.S. tax liabilities effectively.

When a U.S. LLC is Required for Bulgarian Partners

A U.S. LLC is often required for Bulgarian partners when conducting business activities that necessitate a U.S. legal presence, such as operating through certain U.S. online marketplaces or seeking U.S. investment. While not always mandatory, forming a U.S. LLC provides significant advantages, including liability protection and a clear U.S. business identity. For Bulgarian residents, the decision to form a U.S. LLC is typically driven by the desire to access the U.S. market more effectively, establish credibility with U.S. customers, or comply with specific platform requirements. For example, some U.S.-based e-commerce platforms or payment processors may require foreign sellers to have a U.S. entity for account verification and tax withholding purposes.

Furthermore, if you plan to invest in U.S. real estate or engage in other significant U.S. business activities, a U.S. LLC offers a recognized legal structure. This structure separates your personal assets from your business liabilities, a critical protection for any entrepreneur. The LLC also offers pass-through taxation, meaning the business itself does not pay federal income tax; instead, profits and losses are passed through to the individual partners to report on their personal tax returns. This avoids the double taxation often associated with C-corporations. For Bulgarian partners, this pass-through taxation is particularly relevant when considering the U.S.-Bulgaria tax treaty, which aims to prevent double taxation of income earned in one country by residents of the other.

The formation of a U.S. LLC is also beneficial for establishing a U.S. business address and a U.S. bank account, which are often prerequisites for many U.S. business operations. While you can operate a U.S. business without a physical U.S. presence, having a formal U.S. entity like an LLC simplifies many aspects. It lends an air of legitimacy to your operations and can make it easier to contract with U.S. businesses. The specific circumstances, such as the nature of your business, your target market, and any platform requirements, will ultimately determine whether forming a U.S. LLC is a strategic necessity or a valuable option.

Essential Documentation for Formation and Tax Compliance

Forming a U.S. LLC requires specific documents, primarily the Articles of Organization filed with the chosen state. This document officially creates your LLC. Alongside this, you'll need an Operating Agreement, a private internal document outlining ownership, management, and operational procedures. For non-resident founders, common documents needed during formation include a copy of your passport for identification and details for a U.S. business address and a registered agent. A registered agent is a designated individual or service that receives official legal and tax correspondence on behalf of your LLC in the state of formation. This is a mandatory requirement for all U.S. LLCs, regardless of the owners' residency.

Once your LLC is formed, obtaining an Employer Identification Number (EIN) from the IRS is a critical next step, especially for multi-member LLCs taxed as partnerships. The EIN acts as the business's federal tax ID. You will use IRS Form SS-4 to apply for an EIN. This process can be completed online, by mail, or by fax. Non-residents without an SSN can apply for an EIN, but the process may differ slightly. After formation and obtaining an EIN, you must also prepare for U.S. tax filings. For foreign partners in a U.S. LLC, this often involves filing Form 5472, Information Return of a 25% Foreign-Owned U.S. Corporation or a Foreign Corporation Engaged in a U.S. Trade or Business, along with a pro forma Form 1120. These forms are due annually, typically by April 15th, and carry significant penalties for non-compliance.

Crucially, to report income received from the U.S. LLC and fulfill your personal U.S. tax obligations, you will need an Individual Taxpayer Identification Number (ITIN). The ITIN is applied for using Form W-7, Application for IRS Individual Taxpayer Identification Number. This form requires proof of foreign status and identity, typically submitted with a U.S. federal tax return or an IRS-authorized certification. For partners in a U.S. LLC taxed as a partnership, you will file a U.S. non-resident tax return (Form 1040-NR) and claim the ITIN on this return. The IRS processes these applications and, upon approval, issues the ITIN via mail, often accompanied by a Form CP-565, ITIN Assignment Letter. Having all these documents correctly prepared and filed is essential for smooth U.S. business operations and tax compliance.

The U.S. LLC Application Process for Bulgarian Residents

The process for forming a U.S. LLC as a Bulgarian resident begins with selecting a state for formation. Delaware, Nevada, and Wyoming are popular choices for non-residents due to their business-friendly laws, though any state is permissible. You will file the Articles of Organization with the Secretary of State in your chosen state. This step officially establishes your LLC as a legal entity in the United States. The typical timeline for state filings ranges from 5–10 business days, with many states offering expedited options for faster processing, sometimes returning filings the same or next business day.

Concurrently, you must appoint a registered agent in the state of formation. This agent serves as the official point of contact for legal and tax notices. Many formation services, including itin.net, offer registered agent services for non-residents. Following state approval of your Articles of Organization, the next crucial step is obtaining an Employer Identification Number (EIN) from the IRS. This is done by submitting Form SS-4. For non-residents without an SSN, this application typically requires a fax or mail submission. The IRS processing time for an EIN can vary but generally takes several weeks. After receiving your EIN, you should finalize your Operating Agreement, which details the internal workings of your LLC, ownership percentages, and partner responsibilities. This document is vital for clear governance and is often required by U.S. banks for opening a business account.

The final, and often most complex, step for Bulgarian partners is obtaining an ITIN using Form W-7. This application must be submitted alongside a U.S. federal tax return (such as Form 1040-NR) for which the ITIN is needed. The ITIN is required to report your share of the LLC's income and to comply with U.S. tax laws. The IRS processing time for an ITIN can be lengthy, often taking 7 to 11 weeks, and longer during peak tax seasons. You can submit your ITIN application directly to the IRS or through a Certifying Acceptance Agent (CAA). Using a CAA can expedite the process by allowing them to verify your original identification documents, eliminating the need to mail them to the IRS. itin.net acts as a CAA, simplifying this critical step for foreign partners. Careful attention to each of these stages ensures your U.S. LLC is properly formed and compliant from the outset.

Common Pitfalls for Foreign Partners in a U.S. LLC from Bulgaria

Foreign partners in a U.S. LLC from Bulgaria often encounter specific pitfalls related to U.S. tax compliance and entity management. A significant mistake is failing to file Form 5472 and the associated pro forma Form 1120 (for LLCs treated as corporations) or Schedule K-1 (for LLCs taxed as partnerships). These reporting requirements are mandatory for foreign-owned U.S. entities and carry substantial penalties, often $5,000 or more per unfiled form, for non-compliance. The IRS uses these forms to track foreign investment and ensure proper taxation. Many Bulgarian partners overlook these annual filings, assuming their obligations are met by simply forming the LLC.

Another common error is neglecting the Operating Agreement. While not filed with the state, it is a critical internal document that governs your LLC's operations, distributions, and member rights. Without a clear Operating Agreement, disputes can arise between partners, and it can create complications when opening a U.S. bank account or seeking financing. Banks often require a copy of the Operating Agreement to verify ownership and signatories. Furthermore, choosing a state for formation without considering potential nexus issues or state-specific taxes can lead to unexpected liabilities. While states like Delaware are popular, they may not be ideal if your primary business operations are elsewhere, potentially creating tax obligations in multiple jurisdictions. Some states, like California and New York, impose significant franchise taxes or fees on LLCs, which can be a substantial burden for foreign-owned businesses not generating substantial revenue within those states.

Finally, delays in obtaining an ITIN or EIN can hinder business operations. Applying for an EIN as a non-resident without an SSN often requires fax or mail, which can be slower than online applications available to SSN holders. Similarly, the ITIN application process using Form W-7 can take many weeks. Failing to start these applications early can delay bank account opening and tax filings. It's also important to ensure your business address and registered agent information are kept up-to-date with the state. Failure to maintain a valid registered agent can lead to administrative dissolution of your LLC. Understanding these specific challenges allows Bulgarian partners to proactively address them and ensure their U.S. LLC operates smoothly and remains compliant.

The Certified Acceptance Agent (CAA) Advantage for Your ITIN

Using a Certified Acceptance Agent (CAA) for your ITIN application offers distinct advantages for foreign partners in a U.S. LLC from Bulgaria. As a CAA, itin.net can verify your original identification documents, such as your passport, directly. This means you do not have to mail your original passport or other vital identification documents to the IRS, significantly reducing the risk of loss or delay. The IRS authorizes CAAs to perform this crucial verification step on their behalf. This service is particularly valuable for non-residents who cannot easily travel to the U.S. to present their documents in person.

The standard ITIN application process through the IRS can take 7–11 weeks, sometimes longer during peak tax seasons. By using a CAA, the document verification is handled immediately by the agent. While the IRS still needs to process the application itself, bypassing the need to mail original documents can streamline the overall timeline. It also provides an extra layer of assurance that your application is complete and correctly submitted, as CAAs are trained to follow IRS guidelines precisely. This attention to detail can help prevent common application errors that might otherwise lead to delays or rejections.

When you choose itin.net as your CAA for your ITIN application, you benefit from expert guidance throughout the process. We understand the specific requirements for foreign partners and can ensure that all necessary supporting documentation is included with your Form W-7 and tax return. This expertise is invaluable, especially when dealing with the complexities of U.S. tax law and IRS procedures. By leveraging the CAA path, you can confidently move forward with your U.S. business setup, knowing that your personal tax identification is being handled efficiently and securely. This service is part of our comprehensive offering to help non-residents establish and maintain their U.S. business presence.

Next Steps After Forming Your U.S. LLC

After successfully forming your U.S. LLC and obtaining your EIN, the next critical step is to open a U.S. bank account. Many U.S. banks require both the formation documents and the EIN to open a business account. Having a dedicated U.S. business bank account is essential for managing your LLC's finances separately from your personal funds, which is a core principle of liability protection. Services like Mercury, Relay, or Brex are often recommended for non-residents, though requirements can vary. Some may require a U.S. address or an ITIN for full functionality. This step is crucial for conducting business operations smoothly and maintaining financial clarity.

Simultaneously, you must ensure timely compliance with U.S. federal tax filing requirements. For foreign-owned U.S. LLCs, this includes filing Form 5472 and any other required tax forms annually. The deadline is typically April 15th, though extensions may be available. Failure to file these forms can result in significant penalties. You will also need to file your personal U.S. tax return (Form 1040-NR) using your ITIN to report any income passed through from your U.S. LLC. Understanding the tax implications under the U.S.-Bulgaria tax treaty is also important for optimizing your tax position and avoiding double taxation. Consulting with a tax professional experienced in international taxation is highly recommended.

Maintaining your U.S. LLC involves keeping your registered agent service current and filing any required annual reports or fees with your state of formation. These requirements vary by state but are essential for keeping your LLC in good standing. For foreign partners in a U.S. LLC from Bulgaria, staying informed about these ongoing obligations is key to long-term success. Consider reviewing the ITIN application services offered by itin.net or contacting us directly for personalized assistance with your U.S. business setup and tax compliance needs. Exploring the pricing for our non-resident LLC bundle can provide a clear picture of the investment required.

Practical tips

  • Use the exact same legal name for yourself and your LLC across all applications (passport, W-7, SS-4, Articles of Organization) to prevent mismatches that delay IRS processing.
  • For LLCs taxed as partnerships, ensure each foreign partner obtains an ITIN before the U.S. tax filing deadline to avoid penalties on their share of income.
  • When applying for an EIN as a non-resident without an SSN, be prepared for a fax or mail application process, which typically takes longer than online submissions.
  • Maintain a clear and up-to-date Operating Agreement; it's crucial for internal governance and often required by U.S. banks when opening a business account.
  • File Form 5472 annually if your U.S. LLC is 25% foreign-owned. Failure to do so carries substantial penalties, even if the LLC had no taxable income.

Frequently asked questions

Do I need a U.S. Social Security Number (SSN) to form a U.S. LLC?

No, you do not need a U.S. SSN to form a U.S. LLC. Non-residents can form an LLC in any U.S. state. However, you will likely need an ITIN for tax purposes and potentially for opening a U.S. bank account.

How long does it take to get an ITIN for a Bulgarian partner?

The IRS processing time for an ITIN can take 7–11 weeks, sometimes longer during peak tax seasons. Using a Certified Acceptance Agent (CAA) can help expedite the document verification part of the process, but the IRS processing time remains the same.

What is the difference between an EIN and an ITIN?

An EIN (Employer Identification Number) is a tax ID for your U.S. business entity, obtained by filing Form SS-4. An ITIN (Individual Taxpayer Identification Number) is a tax ID for individuals who are not U.S. residents and do not have an SSN, obtained by filing Form W-7.

Can I open a U.S. bank account for my LLC without being in the U.S.?

Opening a U.S. bank account as a non-resident can be challenging but is often possible with the right documentation, including your LLC formation documents, EIN, and sometimes an ITIN. Some banks have specific procedures for remote account opening for foreign founders.

Does the U.S.-Bulgaria tax treaty affect my U.S. LLC?

Yes, the U.S.-Bulgaria tax treaty aims to prevent double taxation. It may affect how certain types of income are taxed and could influence withholding tax rates. It is advisable to consult with a tax professional familiar with both U.S. and Bulgarian tax law to understand its specific implications for your situation.

What are the annual reporting requirements for a foreign-owned U.S. LLC?

Foreign-owned U.S. LLCs typically must file Form 5472 annually, along with a pro forma Form 1120 if treated as a corporation, or report income via Schedule K-1 if treated as a partnership. Failure to file these forms incurs significant penalties.

Ready to Apply for Your ITIN?

Our IRS-Certified Acceptance Agents make the process simple and remote — from anywhere in the world.

  • IRS Certified
  • 5–10 Business Days
  • Money-Back Guarantee