What is the fine for missing the US tax filing deadline for LLCs? If you forget to file or are late for filing Form 5472 and Form 1120 as a Foreign-Owned Single-Member LLC, then the fine from the IRS is $25,000. Related Articles Related ArticlesWhat taxes will I need to pay in the U.S.?What Tax Compliances are required for me?Sales Tax by State: Economic Nexus LawsLate filing penalties for limited companies in the UKHow to file sales tax in each state? Was this helpful? YesNo 0 / 0 Share this article Facebook Twitter LinkedIn WhatsApp