Miss Form 5472? The $25,000 IRS Penalty for Non-Resident LLCs

Form 5472 is the most expensive compliance gap in non-resident LLC ownership. Not because the form is hard to prepare, but because the penalty for missing it is $25,000 per form, per year. Most non-resident LLC owners do not know this form exists until they receive a notice or learn about it from another founder who already paid the penalty. The IRS assesses a $25,000 penalty for each Form 5472 that is not filed, filed late, or filed with substantially incomplete information. Every foreign-owned single-member LLC is required to file Form 5472 annually with a pro forma Form 1120, regardless of whether the LLC had revenue, profit, or any business activity during the year. The filing is due on April 15 following the calendar year (with a possible 6-month extension to October 15). A founder who formed an LLC in 2024 and has never filed faces a potential $50,000+ in accumulated penalties by 2026. I have watched this penalty hit founders who had no idea the obligation existed. They formed th