Learn everything about Form 5472 and Form 1120 filing requirements for foreign-owned US LLCs in 2026. Understand who needs to file, reportable transactions, important deadlines, extension procedures, and how to avoid the potential $25,000 IRS penalty. Get practical guidance from KronixTax to keep your US business tax-compliant.
Kronix Admin2 min read
Forming a US LLC from abroad is easier than ever. In a few days, a founder in India—or anywhere outside the United States—can set up a Delaware or Wyoming LLC through Stripe Atlas, open a US business bank account, and start selling on Amazon FBA, Shopify, or to US software clients. What catches many international founders off guard isn’t setting up the company. It’s what happens the following April. Even if your US LLC owes zero federal income tax, the IRS still tracks money moving between a US company and its non-US owner. That’s where Form 5472 comes in. If you are a non-US person who owns 100% of a US single-member LLC (treated by default as a “disregarded entity” for tax purposes), you must file Form 5472 attached to a pro forma Form 1120 for any year in which you and your LLC had reportable transactions. Why does an information form matter so much? Because the IRS attaches a $25,000 penalty to a late, missing, or substantially incomplete Form 5472—and that fine can keep climbing by $25,000 every 30 days if ignored after an IRS notice. Below, our team at KronixTax walks through who actually needs to file Form 5472, which everyday founder transfers trigger the requirement, how to prepare the pro forma Form 1120, and how to stay compliant for the 2026 tax season.
Important distinction: Zero sales does not automatically mean zero paperwork. What triggers Form 5472 isn’t customer revenue—it’s whether money or value moved between the LLC and its foreign owner (or another related party). If your LLC had zero reportable transactions across Parts IV, V, and VI during the entire year, you don’t have to file; otherwise, you do.
