Holding both US and Canadian citizenship creates tax obligations in both countries—here's what dual citizens must file.
If you hold both US and Canadian citizenship, you're a tax resident of both countries and must file returns in each. The US taxes citizens on worldwide income regardless of where they live; Canada taxes residents on worldwide income. This creates a dual-filing requirement that catches many dual citizens off guard.
First, you must file US Form 1040 annually if you have US-source income or meet the gross income threshold (around $14,000 for single filers in 2024). Second, you must file a Canadian tax return if you're a resident of Canada. Third, you need to report foreign bank accounts to both countries: FBAR to the US (if accounts exceed $10,000) and FINTRAC to Canada (if you have non-resident accounts). Fourth, take advantage of the US-Canada tax treaty to avoid double taxation—you can claim foreign tax credits or use the Foreign Earned Income Exclusion. Fifth, keep meticulous records; the IRS and CRA both conduct audits.
Dual US-Canada citizens must file in both countries—the tax treaty helps prevent double taxation.
Many dual citizens benefit from working with a cross-border accountant who understands both systems. The cost is typically $2,000–$4,000 annually, but it ensures compliance and often saves money through proper treaty application.
Source: original report ↗
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