The Form 5472 obligation for foreign-owned single-member US LLCs is the highest-consequence, lowest-awareness rule in US foreign-owned entity taxation. Missing it can cost $25,000 per year, and "I did not know" is not accepted as reasonable cause by the IRS.
The Rule in Plain English
If you are not a US person (citizen, green card, tax resident), and you own 100% of a US LLC, then even if:
- Your LLC made zero dollars
- Your LLC has no US employees
- Your LLC has no US customers
- You never set foot in the US
...you still owe Form 5472 annually, plus a pro-forma Form 1120 as the cover sheet. The moment you opened the LLC bank account with any amount, you triggered a "reportable transaction" and the filing obligation began.
Common Misunderstandings
"But I did not have any US income"
Form 5472 is not a tax return. It is an information return. The obligation is triggered by having a foreign-owned US LLC with any reportable transaction — not by having US-source income. Zero income does not exempt you.
"But my LLC is a pass-through, I file on my personal return"
For US tax purposes, yes — but the 2017 Treasury Regulation changed the entity classification specifically for Form 5472 reporting. Your single-member LLC is treated as a domestic corporation solely for this one filing.
"My CPA said I don't need to file"
Non-US-experienced CPAs frequently miss this. The rule is buried in Treasury Regulations §1.6038A, added in December 2016 and effective January 2017. If your CPA is not familiar with Form 5472 for foreign-owned SMLLCs, they are not the right advisor for your entity.
"I dissolved the LLC before the deadline"
You still owe Form 5472 for the period the LLC existed during the tax year. Dissolution does not eliminate past filing obligations.
What Counts as a Reportable Transaction (2026)
- Any capital contribution from you to the LLC
- Any distribution from LLC to you
- Any loan in either direction
- Any service fee paid by LLC to you (including if you performed services personally for the LLC)
- Any rent charged by you to LLC (or vice versa)
- Any sale of property (even IP or code) between you and LLC
- Any interest on inter-company payables
- Foreign exchange conversion fees when you funded the LLC
Mechanical Filing Sequence
- Get EIN (Form SS-4)
- Prepare Form 1120 (cover sheet, identifying info only)
- Complete Form 5472 (Parts I, II, IV)
- Attach 5472 to 1120
- Mail to Ogden, UT service center
DIY vs Professional
For a simple single-member LLC with only opening deposit and annual state fees as reportable transactions, DIY is feasible. Time investment: 3-5 hours first year, 1-2 hours subsequent years.
For complexity — multiple loans, service arrangements, related-party sales, transfer pricing — engage a US CPA specializing in inbound foreign LLC filings ($500-1,500 first year, $300-800 subsequent).