US Tax Obligations for a Foreign-Owned LLC

Start with the questions, not the forms

Non-US founders often hear that a US LLC is "not taxed in the US" or that it "just files one form". Both can be true for some companies and badly wrong for others. The IRS doesn't have one rule for foreign-owned LLCs. It applies general rules, and the answer for your company comes out of a few facts about it.

These are the five questions that decide most of it:

1. 1
   How is the LLC classified for federal tax?Disregarded entity, partnership or corporation. This sets which return is filed.
2. 2
   One owner, or several?A single foreign owner and a group of members lead to different yearly filings.
3. 3
   What does the business actually do in the US?US activity decides whether any income is taxed in the US, and how.
4. 4
   What does the state of formation expect?State taxes, fees and reports run on their own calendar.
5. 5
   What records do you need to keep?The IRS expects you to be able to back up what you report.

Question 1: How is the LLC classified?

An LLC is a state-law entity. For federal income tax, the IRS gives it a default classification based on the number of members (source):

• One member: treated as an entity disregarded as separate from its owner. Its income and expenses are generally reported by the owner.
• Two or more members: classified as a partnership, which files an information return and passes profits and losses through to its members.

An LLC can choose a different classification by filing Form 8832, Entity Classification Election, and be treated as a corporation instead (source). The IRS limits the timing: the election can't take effect more than 75 days before it is filed, or more than 12 months after (source). An LLC can also elect S corporation status, but S corporations can't have nonresident alien shareholders (source), so that route is usually closed to non-US owners.

Classification is a choice with consequences on both sides of the border. Corporate treatment, for example, means the company is taxed on its own profit and dividends can be taxed again when paid out. Our LLC vs C-Corp comparison sets the two structures side by side. Whether to keep the default or elect is a question for your tax professional.

Question 2: One foreign owner, or several members?

A single foreign owner

A disregarded LLC is normally invisible for income tax. There is one important exception. For Form 5472, a US disregarded entity wholly owned by one foreign person is treated as a separate entity and classified as a corporation (source). In practice this means it files every year:

• Form 5472, which reports transactions between the LLC and its foreign owner or other related parties, and
• a pro forma Form 1120 as the cover return, on which only the name, address and a couple of identifying items are filled in.

The filing is due by the Form 1120 due date, including extensions (source). For a calendar-year company, that is generally the 15th day of the 4th month after year end, so April 15 (source). The IRS instructions say it can't be filed electronically; it goes by fax or mail (source).

Which transactions to report, how to fill in each part and where to send it are covered in our separate guide to Form 5472 and pro forma Form 1120.

Two or more members

A multi-member LLC taxed as a partnership files Form 1065 to report its income, gains, losses and deductions; the partnership itself doesn't pay income tax, and each member reports their share (source). A domestic partnership must file unless it has no income and no expenses treated as deductions or credits (source).

Foreign members add a layer. If the partnership has effectively connected income allocable to a foreign partner, it must withhold and pay tax on that share under section 1446, using Forms 8804, 8805 and 8813 (source). A foreign member of a partnership engaged in a US trade or business is also treated as engaged in that business themselves (source), which can mean a US return of their own.

An LLC that elected corporate treatment

It files Form 1120 and pays tax on its own profit. If a foreign person owns 25% or more, it is a reporting corporation and also files Form 5472 (source).

Question 3: Is the business engaged in a US trade or business?

Filing a form and owing tax are different things. A foreign owner of a disregarded LLC can have a Form 5472 filing obligation and still owe no US income tax, or owe quite a lot. What decides it is the kind of income and where the work happens.

The IRS describes a foreign corporation as engaged in a US trade or business when it carries on considerable, continuous and regular profit-seeking activity in the United States, and says the answer depends on the facts (source). When a foreign person is engaged in a US trade or business, the US-source income connected with it is effectively connected income (ECI). ECI is taxed on a net basis, after deductions, at the graduated rates that apply to US persons (source). A nonresident individual engaged in a US trade or business files Form 1040-NR (source).

US-source income that isn't effectively connected, such as certain interest, dividends, rents or royalties, is taxed differently: 30% of the gross amount, with no deductions, unless a tax treaty sets a lower rate (source).

Question 4: What does the state expect?

State obligations are separate from federal ones, and they apply whatever the LLC's federal classification. Each state sets its own yearly taxes, fees and reports. For the two states non-US founders pick most often:

If the company does business in another state, for example with staff, an office or stock there, that state may expect it to register and may have its own income, franchise or sales taxes. Our state comparison lists fees and due dates by state, and Delaware vs Wyoming compares the two in more depth.

Question 5: What records will you need?

A reporting corporation must keep permanent books of account or records that are enough to show its return is correct and to document transactions with related parties (source). For a foreign-owned disregarded LLC, the reportable transactions include amounts paid or received in connection with forming the entity, and contributions to and distributions from it (source). In plain terms, money you put into the LLC, including to pay its formation costs, and money you take out both count.

A workable routine that most tax professionals will be glad to see:

• Run company money through a separate business account rather than a personal one.
• Log every transfer between you and the LLC, with date, amount and what it was for.
• Keep invoices, receipts, contracts and bank statements for the year together.
• Keep your EIN confirmation letter safe. The IRS forms ask for the company's EIN; if you don't have one yet, see EIN application support.
• Note each year's due dates: the IRS filing, the state tax or report, and any extension you file.

A business account also helps with the paperwork banks and platforms ask for; our banking guide covers what they typically check.

Where BOI reporting stands

Beneficial ownership information (BOI) reporting is a FinCEN requirement, not a tax filing. Under FinCEN's interim final rule of March 2025, all entities created in the United States, and their beneficial owners, are exempt from BOI reporting. The requirement now applies to companies formed under foreign law that register to do business in the US (source).

So an LLC formed in Delaware or Wyoming doesn't currently file a BOI report, even with a foreign owner. FinCEN's rules have changed more than once, so check its page before relying on this.

Working with a tax professional, and what Registate does

The questions above are the ones a good US tax professional will ask you. Having the answers ready makes the first meeting more useful. Bring:

• Your formation documents, EIN letter and the names and countries of every owner.
• A description of what the business sells, to whom, and where the work is done.
• Bank statements and a list of transfers between you and the company.
• Any home-country tax advice you already have.

Registate's part comes before the tax filings. We form LLCs and C-Corps online with no SSN needed, include a registered agent in every formation plan, and prepare your EIN application as paid support; the IRS doesn't charge for the EIN itself. We don't prepare tax returns such as Form 1120, 1065 or 5472, and we don't give tax advice. Processing times vary; the state and the IRS set them.

Sources, checked September 2026: IRS pages on LLCs, Form 8832, Form 5472 instructions, Form 1065 instructions, Form 1120 instructions, effectively connected income, FDAP income and partnerships with foreign partners; FinCEN BOI; Delaware Division of Corporations; Wyoming Secretary of State.