How a Foreign-Owned LLC Is Taxed in the US

If you are a non-US resident thinking about opening a US LLC, one of your first questions is probably: will I owe US taxes? The short answer is that it depends, and the answer matters a great deal for how you structure your business from day one.

This guide explains how the IRS treats foreign-owned LLCs, when US income tax applies, and what you need to file even if you owe nothing. We work with international entrepreneurs on exactly these questions every day, and the details below reflect what we see in practice.

How the IRS Treats a Foreign-Owned LLC by Default

A US LLC with a single foreign owner is typically treated as a disregarded entity for US federal income tax purposes. This means the IRS does not recognize the LLC as a separate taxpayer. Instead, any income or losses pass directly to the owner.

The practical result: if you own 100% of a US LLC and the IRS disregards it, you as the owner are responsible for any US tax obligations, not the LLC itself. This sounds simple, but it has significant implications for when and how you owe taxes.

A multi-member LLC with foreign owners is treated differently. It files a partnership return (Form 1065) and each partner reports their share of income. The analysis here focuses on single-member LLCs, which is the most common structure for non-US entrepreneurs starting a US business.

The Core Question: Is Your Income US-Sourced?

For a foreign-owned LLC, US federal income tax applies when the LLC generates income that is considered US-sourced. Understanding when income is US-sourced or foreign-sourced is the foundation of the entire analysis.

The IRS uses two related concepts to make this determination:

• ETOB (Engaged in Trade or Business in the United States): whether the LLC has meaningful business activities occurring inside the US, such as employees, a physical office, a warehouse, or a dependent agent who acts on the LLC’s behalf.
• ECI (Effectively Connected Income): income that is directly tied to those US business activities. If the LLC is ETOB, the income connected to those activities is ECI and is taxable in the US.

If your LLC is not engaged in a US trade or business and does not generate ECI, it generally owes no US federal income tax. This is the case for many international entrepreneurs who run service-based businesses entirely from outside the US.

When a Foreign-Owned LLC Is Typically Tax-Free

Online service providers who work entirely from outside the United States are often in a favorable position. If you are a marketer, consultant, coach, programmer, or other service provider performing your work from your home country, the income from those services is typically sourced to the country where the work is performed, not where the client is located.

A German web designer with a US LLC providing services to US clients from Berlin generally does not owe US federal income tax on those earnings. The income is German-sourced.

One important nuance: if you travel to the US for work, even temporarily, income earned during those periods may become US-sourced. Physical presence during the work matters, not just where your clients are based.

When a Foreign-Owned LLC May Owe US Tax

E-commerce businesses and businesses with physical US operations face a more complex picture. A few situations that commonly create US tax obligations:

• Selling physical products to US customers when the LLC holds or buys inventory. If your LLC purchases goods and sells them to customers in the United States, the income is typically US-sourced and taxable.
• Using a US warehouse or fulfillment center, such as Amazon FBA. The IRS has become stricter about this over the past several years. Income from selling through Amazon FBA to US customers is generally treated as US-sourced, even if the seller is based abroad.
• Having a US-based employee or dependent agent. If someone in the US works exclusively for your LLC, closes deals, or takes meaningful business actions on your behalf, that creates a US business presence.
• Passive income such as dividends, rents, royalties, and certain interest payments (FDAP income). This type of income is often subject to a 30% withholding tax at the source, which may be reduced by a tax treaty between the US and your country of residence.

Dropshipping and Pure Middleman Models

A business that never takes ownership of inventory, where the LLC simply connects buyers to suppliers and earns a commission, is often treated more like a service provider. If the LLC does not purchase or hold goods, and the supplier ships directly to the customer and invoices them directly, the income may be foreign-sourced and not subject to US tax.

However, the line between a genuine commission-based model and ownership of goods can be fact-specific. If you are in this situation, it is worth getting a proper analysis before assuming tax-free status.

What About State Taxes?

Federal income tax is only part of the picture. US states have their own tax rules, and some states impose franchise taxes or income taxes on LLCs even when no federal tax is due. Sales tax obligations also vary by state and can be triggered by economic nexus, meaning you may have sales tax responsibilities in states where you have a significant number of customers, even without a physical presence there.

State tax compliance is a separate layer of analysis from federal tax, and the rules differ considerably depending on which state your LLC is registered in and where your customers are located.

Filing Requirements: Even Tax-Free LLCs Must File

This is one of the most important things to understand: even if your foreign-owned LLC owes zero US income tax, it still has annual filing obligations with the IRS.

A foreign-owned single-member LLC must file Form 5472 along with a pro forma Form 1120 every year. This requirement exists regardless of whether the LLC had any income, expenses, or activity during the year. The penalty for missing this filing is $25,000 per year, per form.

Forming the LLC creates a reportable transaction. Even in the year of formation, before any business is conducted, you likely need to file.

Many first-time foreign LLC owners are caught off guard by this. They assume that a tax-free business means no IRS interaction. The reporting obligation is separate from the tax obligation, and treating them as the same thing is one of the most common and expensive mistakes we see.

Electing to Be Taxed as a Corporation

It is also possible to elect to have your LLC taxed as a C corporation by filing Form 8832 with the IRS. Depending on your business model and overall tax situation, this can sometimes be advantageous. The analysis involves US corporate tax rates, dividend withholding, treaty benefits, and your home country’s treatment of the income.

This is not the right choice for every business, and the decision should be made with input from an advisor who understands both your home country’s tax rules and the US side.

Key Takeaways

• A foreign-owned single-member LLC is typically a disregarded entity. The IRS looks through it to the owner.
• US income tax applies when the LLC generates US-sourced income, primarily tied to business activities conducted inside the United States.
• Service providers working entirely from outside the US are often tax-free. E-commerce businesses with US inventory or fulfillment often are not.
• All foreign-owned single-member LLCs must file Form 5472 and a pro forma Form 1120 annually. The penalty for not filing is $25,000.
• State tax obligations are separate and may apply even when no federal tax is due.