Why this decision matters
A Canadian corporation controlled by its owner does not move with the owner — but its tax character does. To the United States, a Canadian company majority-owned by a U.S. person is a controlled foreign corporation, dragging its shareholder into Form 5471 reporting and the anti-deferral regimes that can tax the company's income on the shareholder's U.S. return before a single dividend is paid.
To Canada, the same event can end the company's Canadian-controlled private corporation status — and with it, the small business deduction and the enhanced investment credits that status carries. The corporation's residence itself can even migrate if its central management moves south with you.
The central idea
A company that made perfect sense for a Canadian resident can become a tax liability for a U.S. one. Decide its future before yours changes.
The CFC consequences are the heavy end: Form 5471 annually (with severe penalties for non-filing), the GILTI-type regime taxing certain corporate earnings currently to the U.S. shareholder, and interactions that can turn low-taxed Canadian small business income into currently taxed U.S. income at unattractive rates. Passive investment assets inside the company add further layers. None of this is prohibitive with planning; all of it is expensive as a surprise.
The realistic options divide by the company's role. An active operating business with Canadian operations may continue — restructured, perhaps with a U.S. entity added, its compensation and dividend policies redesigned for the treaty's withholding rates. A company that mainly holds your surplus investments is a harder case: many owners extract value before departure (paying Canadian tax at known rates), wind the company up, or freeze and restructure ownership. Keeping the corporation's mind and management in Canada — board decisions, directing minds, documentation — also matters, or the company itself risks becoming a dual resident with its own emigration problem.
Educational use notice
This publication is part of the Numera Decision Library and is provided for education only. It is general information — not accounting, tax, legal, or investment advice — and it does not consider your personal circumstances. Every guide is grounded in official guidance from government and regulated authorities — including the Canada Revenue Agency (CRA), the Department of Finance Canada, Service Canada and Employment and Social Development Canada, the Internal Revenue Service (IRS), and the Canadian Centre for Cyber Security — with the sources listed at the end of each guide. Tax rules and dollar limits change; confirm current figures with the official source, and speak with a qualified professional before acting on any decision discussed here.
This guide addresses tax and financial-reporting matters only. Nothing in it is immigration advice; residency for tax purposes is distinct from immigration status, and immigration questions should be directed to a licensed immigration professional.
Official references
Sources are official government and regulated-authority publications. Official sites reorganize periodically — search the document title if a link has moved.