Last year I got a US LLC as a non-resident. Everything was fine until tax season when I learned about Form 5472.

Every foreign-owned US LLC must file this form annually. Miss it? $25,000 penalty. Per year. And it compounds.

I panicked. Called 4 CPAs. Cheapest quote: $500. Most wanted $800-$1,500. For what? A form that's mostly zeros.

Then I found out you can't even e-file it. The IRS only accepts fax or mail. In 2026. Fax.

I kept seeing the same panic on Reddit, people finding out about this form months or years late, terrified of the penalty, confused by the IRS instructions, getting ripped off by CPAs.

So I built Filabl ([filabl.com](https://filabl.com/)). Upload your bank statements, it figures out which transactions the IRS cares about, generates both forms, and faxes everything to the IRS for you. $50/year.

Sent the first real filing to the IRS last week. Got delivery confirmation.

The irony? Most foreign LLC owners don't actually owe any US tax. This form is purely informational. The IRS just wants to know about money moving between you and your LLC. But skip it and they'll fine you $25,000 for not telling them about your $0 tax bill.

Still figuring out how to reach these people. They're scattered across every country, most don't even know they have a problem until it's almost too late.



I found out the IRS can fine me $25,000 for a form I didn't know existed, so I built a tool to fix it