Form 5472 Walkthrough — Anonymousllc.co's 2026 reference. Covers the rule, the controlling statute or regulation, common questions, and how Anonymousllc.co handles it in practice. Primary-source citations linked throughout.
Form 5472 (Information Return of a 25% Foreign-Owned U.S. Corporation or a Foreign Corporation Engaged in a U.S. Trade or Business) is required for every disregarded-entity US LLC with at least 25% foreign ownership that has reportable transactions in the tax year. Foreign-owned single-member LLCs file Form 5472 with a pro forma Form 1120, even with no US tax liability.
(1) Foreign-owned US single-member LLCs that have reportable transactions (formation funding, capital contributions, distributions, loans to/from owners). (2) US C-corps that are at least 25% foreign-owned with reportable transactions. (3) Foreign corporations engaged in a US trade or business. Single-member LLCs treated as corporations also file as US corporations under (2).
Part I — Reporting corporation info (LLC name, address, EIN). Part II — 25% foreign shareholder info (foreign owner's name, address, country of citizenship, taxpayer ID if any). Part III — Related party info (if transactions are with a related party other than the owner). Part IV — Monetary transactions (purchases, sales, rents, royalties, loans, interest). Part V — Reportable transactions. Part VI — Additional info. Part VII — Cost-sharing arrangement (rare).
For a foreign-owned disregarded-entity LLC, Form 5472 must be attached to a pro forma Form 1120. Write 'Foreign-owned U.S. DE' across the top of the 1120. Only Form 1120 lines required: name, address, EIN. The rest is blank. File by April 15 (or extended due date with Form 7004). Mail to Ogden, UT.
IRC § 6038A imposes a $25,000 minimum penalty for failure to timely file Form 5472, with additional $25,000 penalties for continued non-compliance after IRS notice. This is one of the highest base penalties in the tax code. Anonymousllc.co's tax-compliance partners file 5472 for non-resident clients as part of annual maintenance.
Top mistakes: (1) Missing 5472 entirely because the LLC has no US income (5472 is required regardless of income); (2) Filing 5472 without the pro forma 1120 (rejected); (3) Wrong country code in Part II; (4) Omitting formation funding as a reportable transaction (Part V requires it); (5) Filing in the wrong service center.
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