Cross-Border US-Canada Dual Tax & Treaty Calculator
Model dual IRS Form 1040 and CRA T1 liabilities, compare Foreign Tax Credit (Form 1116) vs Foreign Earned Income Exclusion (Form 2555), check FBAR FinCEN 114 $10,000 reporting thresholds, and audit high-risk TFSA, FHSA, and PFIC exposures.
π Dual Tax Parameters
Eligible for refundable US Child Tax Credit up to $1,700 USD/child via Form 1116.
π Canadian Accounts Scanner (FBAR & PFIC)
Compliance AuditExceeds $10,000 USD aggregate foreign balance. Mandatory electronic filing with US Treasury by October 15.
Canadian ETFs or TFSA balances detected. Subject to punitive excess distribution taxes and foreign trust reporting.
π Cross-Border Tax Waterfall (USD Equivalent) 1 USD = 1.38 CAD
βοΈ FTC (Form 1116) vs. FEIE (Form 2555) Side-by-Side Form 1116 Wins
Complete US-Canada Cross-Border Tax Guide for Expats & Dual Citizens
1. The Citizenship-Based Taxation Trap
Unlike Canada, which taxes solely based on physical residency, the United States taxes all US citizens and lawful permanent residents (Green Card holders) on their worldwide income regardless of where they live. Even if you have lived in Canada for 30 years and have zero US-sourced income, you are legally mandated to file an annual IRS Form 1040, Form 1116, and Treasury FinCEN Form 114 (FBAR).
2. Why TFSAs & RESPs are Toxic for US Persons
The US-Canada Income Tax Treaty explicitly protects RRSPs and RRIFs under Article XVIII(7), deferring US taxation until withdrawal and exempting them from foreign trust reporting under IRS Revenue Procedure 2014-55. However, TFSAs, FHSAs, and RESPs are completely unshielded:
- TFSA & FHSA: Earnings and dividends are taxable annually in the US. No US tax deduction is granted.
- RESP: The parent (subscriber) must pay US income tax on both investment growth and the Canadian government's CESG matching grant.
- Foreign Trust Forms 3520/3520-A: Some CPA firms take the conservative position that TFSAs/RESPs require foreign trust filings, carrying statutory non-filing penalties of $10,000+.
3. The PFIC Nightmare (Form 8621)
Any investment fund incorporated outside the United States is classified by the IRS as a Passive Foreign Investment Company (PFIC) under IRC Sections 1291-1298. This includes virtually all Canadian mutual funds and TSX-listed ETFs (e.g. VBAL, VEQT, XIC). Under default Section 1291 rules, capital gains are punitively taxed at the highest US marginal tax rate (37%) plus daily compounding interest backdated to purchase. Dual citizens should hold individual blue-chip stocks or US-domiciled ETFs (e.g. VOO, VTI) instead!
4. Streamlined Foreign Offshore Procedures
If you are an American living in Canada who did not know you were required to file US returns, the IRS offers an amnesty program called the Streamlined Foreign Offshore Procedures. To catch up without any penalties, you must:
- File your past 3 years of delinquent US Form 1040 tax returns.
- File your past 6 years of delinquent FBAR (FinCEN Form 114) reports.
- Sign a certification of non-willful conduct (Form 14653).
- All failure-to-file and FBAR penalties are 100% waived by the IRS!