Americans With UK Limited Companies: If You Don’t File Form 5471, Here’s What Happens
US • UK • CROSS-BORDER TAX Summary: Many Americans who set up a UK limited company are told they don’t need to file Form 5471 . That advice is dangerously wrong. The IRS treats most UK companies owned by US persons as Controlled Foreign Corporations (CFCs), triggering Form 5471, Subpart F exposure, and potential GILTI taxation , even when no money is distributed. Form 5471 applies far more often than Americans are told CFC status can create GILTI tax on retained UK profits Penalties apply even if no US tax was owed The Myth Americans Keep Hearing Some accountants claim a UK Limited Company “keeps tax offshore” or “is treated separately so the IRS doesn’t care.” That’s not just wrong, it’s financially dangerous. Under US tax law, Americans are taxed on worldwide income, and foreign corporations they control are subject to mandatory filing obligations. When Form 5471 Applies Form 5471 applies when a US person owns shares, voting rights, or control thresholds in a UK compan...