US Expat Taxes in Canada: Filing Both CRA and IRS Returns

Roughly one million US citizens live in Canada, and most of them discover the same unpleasant surprise the first time they sit down to file: moving to Canada did not end their US tax obligation, it doubled their paperwork. US expat taxes in Canada mean filing a return with the Canada Revenue Agency as a resident and a return with the IRS as a citizen, every year, for as long as US citizenship or green card status lasts. The two systems do not talk to each other, so the risk is not just extra filing, it is double taxation if the two returns are not coordinated correctly.

Why Do Americans in Canada Have to File Two Tax Returns?

Because residence and citizenship are separate taxing hooks, and Canada and the US each pull a different one. Canada's Income Tax Act taxes a resident of Canada on worldwide income, a rule triggered by where you live, not your passport. The US taxes citizens and green card holders on worldwide income no matter where they live, a rule triggered by status, not residence. A US citizen who becomes a Canadian resident satisfies both tests simultaneously and owes a return in each country.

This is not double taxation by itself, it is dual filing. Whether tax is actually owed twice on the same dollar of income depends on how well the two returns are coordinated, primarily through the foreign tax credit mechanism described below and the US-Canada income tax treaty. The treaty exists specifically to prevent full double taxation, and a comprehensive totalization agreement between the two countries separately prevents paying into both the US Social Security system and the Canada Pension Plan on the same self-employment or wage income at the same time, with a certificate of coverage assigning you to one system.

Should You Use the Foreign Earned Income Exclusion or the Foreign Tax Credit?

For most Americans in Canada, the Foreign Tax Credit on Form 1116 does more work than the Foreign Earned Income Exclusion on Form 2555. The reason is straightforward: Canadian combined federal and provincial income tax is generally higher than the equivalent US federal tax on the same income, so a dollar-for-dollar credit for Canadian tax paid tends to eliminate US tax on that income entirely, with credit left over.

The FEIE under IRC Section 911 excludes a limited amount of foreign earned income from US tax each year, an amount that is indexed annually. It only covers earned income (wages and self-employment income), not investment income, rental income, or Canadian pension income. Once you revoke the FEIE election to move to the FTC, you generally cannot re-elect the FEIE for five tax years without IRS consent (IRC Section 911(e)(2); Treas. Reg. Section 1.911-7(b)(2)), so the choice is somewhat sticky. More importantly, claiming the FEIE generally disqualifies you from the refundable Additional Child Tax Credit for the excluded income, while claiming the FTC instead can preserve it, a real difference for a family with US-citizen children.

The FTC, computed on Form 1116 under IRC Sections 901 and 904, works differently. Foreign tax is credited against US tax liability by category, or "basket," under Section 904(d), most commonly the general category for wages and business income and the passive category for interest, dividends, and capital gains. Because Canadian tax rates on most income levels exceed US rates, the credit generated in a given basket often exceeds the US tax on that same basket's income for the year. Excess credit does not disappear, Schedule B of Form 1116 allows a one-year carryback and a ten-year carryforward, so credit generated in a high-tax Canadian year can offset US tax in a future year where the numbers run the other way. For a full side-by-side, see our foreign tax credit versus FEIE comparison.

Does the US-Canada Tax Treaty Actually Prevent Double Taxation?

Mostly, but not automatically, and not for everything. The comprehensive US-Canada income tax treaty allocates taxing rights between the two countries on categories of income including pensions, and it contains a saving clause that lets the US continue to tax its citizens as if the treaty did not exist for most purposes, with specific carve-outs. The treaty is a framework for coordination, not a substitute for correctly filing the FTC or other relief on your US return.

A comprehensive US-Canada totalization agreement operates alongside the income tax treaty and covers a separate problem, self-employment and payroll tax rather than income tax. Without it, a self-employed American in Canada could owe both US self-employment tax and Canadian Pension Plan contributions on the same earnings. The totalization agreement assigns coverage to one system, generally the country where the work is performed, and a certificate of coverage documents the exemption from the other system.

How Is an RRSP Treated on Your US Tax Return?

An RRSP or RRIF gets favorable, well-settled US tax treatment: the growth inside the account is not taxed currently. Article XVIII(7) of the US-Canada treaty, combined with Rev. Proc. 2014-55, allows an eligible individual to defer US tax on the undistributed income accruing inside a Canadian registered retirement savings plan or registered retirement income fund. Since Rev. Proc. 2014-55 took effect, an eligible individual who has not previously reported the undistributed earnings as income is treated as having made that deferral election automatically, no election statement or form required. Form 8891, which used to be filed for this purpose, was made obsolete as of December 31, 2014.

Deferral is not exemption. Distributions from an RRSP or RRIF are included in US gross income under IRC Section 72 when they are eventually paid out, and because the account was built with no US basis for most contributors, the entire distribution is typically taxable in the US at that point. FBAR and Form 8938 reporting continue to apply to RRSPs and RRIFs regardless of the treaty deferral. For the full mechanics, including how this compares to UK and Australian pension treatment, see our foreign pension US tax guide.

Why Is a TFSA a Tax Trap for US Citizens?

Because the US simply does not recognize the tax-free status Canada gives it. A Tax-Free Savings Account is exactly what its name says under Canadian law, but the US-Canada treaty has no provision comparable to the RRSP relief for TFSAs, so US tax treatment falls back to general US rules. Two problems tend to show up.

First, a TFSA is often analyzed as a foreign trust for US purposes, which historically has raised Form 3520 and Form 3520-A filing questions, informational returns with a well-known reputation for large penalties even when no tax is due. Whether a specific TFSA is treated as a foreign trust, and what reporting follows from that characterization, is genuinely fact-specific and less settled than the RRSP analysis, so this is not a one-size-fits-all answer and it deserves an actual review of the account's terms rather than a blanket assumption either way. See our guides to Form 3520 and Form 3520-A for what those filings involve.

Second, and often the bigger cost, a TFSA typically holds Canadian mutual funds or similar pooled investments, and most non-US pooled funds are passive foreign investment companies under IRC Sections 1291 and 1298. That triggers Form 8621 reporting and, absent a protective election, the punitive excess-distribution PFIC tax regime, which can turn ordinary fund growth into a high-rate US tax bill with an interest charge layered on top. The net result for many TFSA holders is US tax exposure and heavy compliance cost on an account that was supposed to be tax-free. A Registered Education Savings Plan, or RESP, used to save for a child's education raises a similar combination of foreign-trust and PFIC questions and deserves the same individualized look before funding it further.

What Foreign Account Reporting Applies on Top of the Income Tax Return?

Several separate information returns can apply, and they are due regardless of whether any US tax is actually owed. Missing them is usually costlier than the underlying tax.

These filings stack. A single TFSA holding Canadian mutual funds can implicate the FBAR, Form 8938, Form 8621, and a Form 3520 analysis all in the same year, which is exactly why the account causes more compliance friction than its Canadian tax benefit is worth for many US citizens.

What Happens if You Are Behind on US Filings While Living in Canada?

The IRS has a dedicated path for this exact situation. Many Americans in Canada only learn about their US filing obligation years after moving, often when applying for a mortgage, renewing a passport, or opening a Canadian investment account that asks about US status. Because the failure was typically non-willful, a taxpayer who has been a bona fide resident of a foreign country and has not filed US returns may qualify for the Streamlined Foreign Offshore Procedures, which generally require the last three years of delinquent returns and six years of FBARs, without the failure-to-file and failure-to-pay penalties that would otherwise apply. Eligibility and the certification of non-willfulness are the parts that need to be handled carefully, since the certification itself carries legal weight.

Bottom Line

An American living in Canada should expect two returns every year, a CRA resident return and a full US citizen return, coordinated so the same dollar is not taxed twice. The Foreign Tax Credit, not the Foreign Earned Income Exclusion, is usually the right tool given Canada's generally higher tax rates. RRSP and RRIF growth gets solid, treaty-backed deferral. TFSA and RESP accounts do not get that same protection and deserve individual analysis before you assume they are as tax-free in the US as they are in Canada. Layer FBAR, Form 8938, Form 8621, and Form 3520 reporting on top, and the compliance burden is real even in years where little or no US tax is due.

Have questions about US expat taxes in Canada? Contact TS CPA for a free consultation. We respond within the same day.

Official IRS and Government Sources

• IRS, US-Canada Income Tax Treaty
• Rev. Proc. 2014-55, Canadian Retirement Plans
• IRS, Foreign Tax Credit
• IRS, Instructions for Form 1116
• IRS, Report of Foreign Bank and Financial Accounts (FBAR)
• IRS, Summary of FATCA Reporting for US Taxpayers
• IRS, Streamlined Filing Compliance Procedures
• Social Security Administration, US-Canada Totalization Agreement