US LLC Tax Guide for Non-Residents: 2026 Edition

TL;DR: As a non-resident LLC owner in 2026, your main obligations are filing Form 5472 + pro-forma 1120 by April 15 (or October 15 with extension), maintaining your EIN, and understanding whether your LLC is considered ETBUS. Most digital service businesses operated remotely from outside the US owe zero federal income tax, but filing requirements still apply with steep penalties for non-compliance.

Time to read: ~8 minutes

What you'll learn

What's changed for foreign-owned LLCs in 2026
How ETBUS determination affects your tax obligations
Required filings and deadlines you can't miss
State-level tax considerations by popular LLC states
How to find and work with a qualified CPA

The big picture: how US taxes work for foreign LLC owners

If you're a non-resident alien (NRA) who owns a single-member LLC, the IRS treats it as a "disregarded entity." This means the LLC itself doesn't pay federal income tax. Instead, any tax obligations flow through to you, the owner.

But here's the critical distinction: whether you actually owe income tax depends on whether your business is considered ETBUS — Engaged in a Trade or Business within the United States.

What is ETBUS?

ETBUS stands for Effectively Connected with a US Trade or Business. If your LLC is ETBUS, income connected to that US business activity is taxable. If it's non-ETBUS, you generally don't owe federal income tax on your LLC's income.

Most foreign-owned digital service businesses are non-ETBUS when:

You perform all services from outside the US
You have no employees or dependent agents in the US
You don't have a fixed place of business in the US
Your income comes from services performed abroad

However, this is a fact-specific determination. If you travel to the US for business meetings, have US-based staff, or maintain inventory in the US, the analysis changes. Always consult a qualified CPA for your specific situation.

Required filings for 2026

Even if your LLC owes zero federal income tax, you still have mandatory filing requirements. Missing these can result in severe penalties.

Form 5472 + Pro-Forma 1120

This is the most important filing for foreign-owned single-member LLCs:

What it is: An information return reporting transactions between the LLC and its foreign owner
Who files: Every foreign-owned single-member LLC that's treated as a disregarded entity
Deadline: April 15, 2026 (for tax year 2025). You can file for a 6-month extension to October 15
Penalty for late filing: $25,000 per form, per year. This is not a typo — the IRS takes this seriously
What to report: Capital contributions, distributions, loans, rent, and other financial transactions between you and your LLC

BOIR (Beneficial Ownership Information Report)

Under the Corporate Transparency Act, LLCs must report their beneficial owners to FinCEN:

Check the latest FinCEN guidance for 2026 deadlines and requirements, as enforcement has evolved
Penalties for non-compliance can include fines and even criminal penalties
Your registered agent or formation service should help you stay current

State-level filings

Depending on where your LLC is formed, you may have state-specific obligations:

State	Annual Report	Cost	Due Date	State Income Tax
Wyoming	Annual Report	$60 minimum	Anniversary month	No state income tax
Delaware	Annual Franchise Tax	$300	June 1	No income tax for non-residents with no DE operations
New Mexico	None required	$0	N/A	No state income tax for non-residents
Florida	Annual Report	$138.75	May 1	No state income tax

Key deadlines calendar for 2026

Here's your compliance calendar:

January 1 — March 15: Gather bookkeeping records and prepare Form 5472
April 15: Form 5472 + Pro-Forma 1120 due (or file extension)
Varies by state: Annual report due (Wyoming: anniversary month, Florida: May 1, Delaware: June 1)
October 15: Extended Form 5472 deadline (if extension was filed)
Year-round: Keep accurate records of all transactions between you and the LLC

What about sales tax?

Sales tax is separate from income tax and depends on nexus — whether your business has a sufficient connection to a state. For digital products and services, the rules vary widely by state. If you sell physical products or digital goods to US consumers, you may need to collect and remit sales tax. This is another area where a CPA is essential.

Common mistakes to avoid

Not filing Form 5472: Even if you owe $0 in tax, the $25,000 penalty for non-filing applies
Missing the BOIR deadline: FinCEN penalties are serious and enforcement is increasing
Mixing personal and business funds: This jeopardizes your LLC's liability protection
Not keeping records: The IRS can request documentation of all reported transactions
Assuming "no tax" means "no filing": Filing requirements exist regardless of tax owed
DIY tax filing: LLC tax compliance for non-residents is specialized — generic tax software won't handle Form 5472

How to find a good CPA

Not every CPA is experienced with foreign-owned LLCs. Look for:

Experience with NRA/foreign-owned businesses: Ask specifically about Form 5472
Understanding of ETBUS: They should be able to explain how it applies to your situation
International tax knowledge: Especially regarding tax treaties between the US and your country
Reasonable pricing: Expect to pay $500-$1,500 for annual compliance for a simple single-member LLC

Ask for referrals from other LLC owners in your network, or check communities of international entrepreneurs.

How Rely helps

Rely helps international entrepreneurs stay compliant from day one:

LLC formation includes all necessary documents — Operating Agreement, EIN application, BOIR filing
Plans from USD 449 to USD 649 cover formation, registered agent, and essential compliance
Ongoing support to help you understand your obligations and connect with qualified professionals
The entire process is 100% online — no need to travel to the US

Next steps

Tax compliance doesn't have to be overwhelming. Start with these three actions:

Mark your calendar with the key 2026 deadlines listed above
Find a CPA experienced with foreign-owned LLCs before tax season
If you don't have an LLC yet, start with Rely to get set up with all the compliance essentials included

Remember: the cost of compliance is far less than the cost of penalties. A $25,000 fine for a missed Form 5472 is entirely avoidable with proper planning.