“Does my US LLC owe US tax?” is the question we hear most from founders who live outside the US. The honest answer is: it depends on what the LLC does and where the work happens. A US LLC does not automatically owe US tax for a foreign owner, and it is not automatically exempt either. This guide explains the test the IRS uses, the forms that follow from it, and the questions to ask about your own business.
The short answer
For a closer look at your next step, read our guides to effectively connected income, Form 1040-NR for an LLC owner, Form 1065 for an LLC with foreign partners, or closing a US LLC from abroad.
- A single-member LLC owned by one non-US person is a disregarded entity by default. That means the IRS looks through the LLC to you, the owner.
- You owe US federal income tax on business profit only if that profit is effectively connected income (ECI): US-source income from a US trade or business.
- If you have ECI, you file Form 1040-NR (your personal nonresident return) and pay tax on it.
- In any year with a reportable transaction between you and the LLC, which is almost every year because funding the LLC counts, the LLC files Form 5472 with a pro-forma Form 1120. That is a report, not a tax bill, and it applies even at $0 income.
- Wyoming and Delaware do not tax the LLC’s income at the state level. Delaware does charge a yearly flat LLC tax.
How the IRS sees a foreign-owned LLC
An LLC with one owner is “disregarded” for federal income tax unless it elects to be taxed as a corporation. Disregarded does not mean ignored. It means the LLC’s income is treated as the owner’s income.
So the real question is not “does my LLC pay tax?” It is “do I, a nonresident, have US-taxable income through my LLC?” For most service and online businesses, that comes down to two ideas: a US trade or business, and US-source income.
Test 1: are you engaged in a US trade or business?
The IRS says a foreign person generally is engaged in a US trade or business when they perform personal services in the US, or own and operate a business in the US that sells services, products or merchandise. The activity must be “considerable, continuous and regular” (IRS, Effectively connected income, checked October 2026).
Things that point toward a US trade or business:
- You, an employee or a dependent agent do the work while physically in the US.
- The LLC has an office, warehouse or staff in the US.
- Someone in the US signs contracts for the LLC on a regular basis.
- You sell inventory where the sale takes place in the US.
Things that do not, on their own, create one:
- Having a US LLC, an EIN or a US bank account.
- Having US clients, if you do the work from outside the US.
- A registered agent address in Wyoming or Delaware.
- Trading stocks or securities through a US broker. The IRS says this alone is not a US trade or business.
Test 2: is the income US-source?
For services, the source of the income is where the work is performed, not where the client or the bank account is. If you design websites from Lisbon for a client in Texas, that fee is generally foreign-source income. If you fly to New York and do the same work there, the part earned there is US-source.
For products, the rules are more detailed. Where title passes, where goods are produced and whether a US office is involved can all matter. Inventory sales and Amazon FBA warehouses are the area where we most often see founders surprised, so take a closer look if you hold stock in the US.
Putting it together
| Situation | Likely result | Personal filing |
|---|---|---|
| Freelancer or agency, all work done outside the US | Usually no ECI | Usually no 1040-NR |
| SaaS run from abroad, no US staff or office | Often no ECI, depends on facts | Check with your preparer |
| You work from the US for part of the year | Income from that US work is likely ECI | Form 1040-NR |
| US employees, office or warehouse | ECI likely | Form 1040-NR |
| Rental income from US real estate | Taxed as FDAP or, by election, as ECI | Often Form 1040-NR |
| US dividends or interest | FDAP: 30% withholding unless a treaty lowers it | Only to claim a refund |
These are patterns, not rulings. One fact can change the answer, so treat the table as a map for your conversation, not as the conversation itself.
What FDAP means, and why it is different
FDAP stands for fixed, determinable, annual or periodical income: dividends, interest, rent, royalties. For a nonresident, US-source FDAP is usually taxed at a flat 30% that the payer withholds, unless a tax treaty sets a lower rate. It is not taxed through your business profit, and you do not file a return for it unless the withholding was wrong or you want to claim a treaty rate you did not get.
That is why the right withholding form matters so much when a US company pays your LLC. We explain it step by step in W-9 or W-8BEN-E? What your foreign-owned LLC gives a client.
When you file Form 1040-NR
The IRS lists who must file. A nonresident must file a return if they were engaged in a US trade or business during the year, or if they had US income where the tax was not fully withheld at source (IRS, Taxation of nonresident aliens, checked October 2026). You may also file to claim a refund of tax withheld in error.
ECI is taxed after deductions at the same graduated rates US citizens pay. A nonresident filing Form 1040-NR needs an ITIN (or an SSN). If you do not have one yet, the ITIN application on Form W-7 goes in with the return. Our ITIN guide covers that process.
Treaties: what they can and cannot do
The US has income tax treaties with many countries. A treaty can:
- Lower or remove withholding on dividends, interest and royalties.
- Say that business profit is taxable in the US only if you have a permanent establishment there, which is usually a narrower test than “US trade or business”.
To claim a treaty position on business profit, you generally disclose it on your return, often with Form 8833. A treaty does not remove the Form 5472 filing. The IRS keeps the list of treaties and their texts.
Your home country still counts
US rules are only half the picture. Most countries tax their residents on worldwide income, and some treat a US LLC as a company, others as transparent. Income the US does not tax may be fully taxable where you live. Before you rely on “the US does not tax this”, check how your country of residence treats LLC profit.
Start with the guide for your tax residence: UK, Germany, India, France or Brazil. Each covers local questions to review with your adviser before forming or funding a US LLC.
The filing that applies to everyone: Form 5472
Whatever your ECI answer, a foreign-owned single-member LLC files Form 5472 attached to a pro-forma Form 1120 for every year with a reportable transaction, and putting money in or taking it out counts. It reports money and property moving between you and the LLC. It applies even with $0 income. It is due April 15 for a calendar-year LLC, or October 15 with a Form 7004 extension filed by the original date (IRS, Instructions for Form 5472, checked October 2026).
The penalty for a missing form is $25,000 per form, per year, separate from any income tax (IRS, Instructions for Form 5472, checked October 2026). Our Form 5472 explained guide covers what goes on it.
State tax in Wyoming and Delaware
Neither Wyoming nor Delaware taxes the income of an LLC that does no business in the state. Wyoming charges a yearly annual report license tax of $60 minimum. Delaware charges a flat annual LLC tax of $400, due June 1 (Delaware Division of Corporations, checked October 2026). See our Delaware LLC tax guide for how that works.
If your business has employees, inventory or an office in another state, that state may expect its own registration and tax. The Wyoming or Delaware formation does not decide that.
FAQ
Does a Wyoming LLC owe US tax if I live abroad?
Not automatically. Wyoming has no state income tax, but the federal question is whether you have effectively connected income. If you do the work outside the US and have no US office or staff, you often have no ECI. If you do, you file Form 1040-NR.
I have US clients. Does that create US tax?
Not by itself. For services, the income’s source is where the work is performed. US clients paying for work you do abroad usually create foreign-source income.
Do I need an ITIN?
Only if you need to file Form 1040-NR or claim treaty benefits that require one. You do not need an ITIN to form the LLC, get an EIN or file Form 5472.
Can I elect corporate tax instead?
Yes. A single-member LLC can elect to be taxed as a C corporation on Form 8832. The company then pays 21% federal tax on its own profit and files a full Form 1120. Our LLC vs C-Corp guide compares the two.
We prepare Form 5472 and the pro-forma 1120 every year through Federal Tax Filing. When your single-member LLC has US business income, we prepare your Form 1040-NR alongside the company filing, and Form W-7 if you need an ITIN. Not sure which side of the line you are on? Tell us how your business works and we will tell you which filings your situation points to.
