US vs Canada Tax: How the Two Systems Compare
The US and Canada have deeply integrated economies, a strong tax treaty, and a social-security totalization agreement -- yet the two tax systems differ in ways that catch cross-border families every year. The defining difference is the same one that separates the US from every country except Eritrea: the US taxes its citizens on worldwide income no matter where they live, while Canada taxes on residence. So an American in Toronto files with both the IRS and the Canada Revenue Agency. This comparison sets the systems side by side and then walks the points that actually matter to US persons: the citizenship-based filing trap, the strong US-Canada treaty and RRSP rules, the TFSA that Canada treats as tax-free but the US does not, and Canada's 50% capital-gains inclusion rate (the proposed increase to two-thirds was cancelled). Figures are for the 2026 tax year in both countries. This is general guidance, not advice for your specific situation.
The short answer
Both countries tax residents on worldwide income, but the US ALSO taxes its citizens and green-card holders wherever they live, so Americans in Canada file with both the IRS and the CRA. Canada's top federal rate is 33% (vs 37% US federal), but provincial taxes push combined top rates above 50% in several provinces. Canada taxes capital gains by including 50% of the gain in ordinary income (the proposed two-thirds inclusion rate above $250,000 was deferred and then cancelled, so 50% stands for 2026). Canada's RRSP is recognized by the US-Canada treaty, but the TFSA is not -- the US taxes it currently and may require foreign-trust reporting. The strong treaty and totalization agreement mean the Foreign Tax Credit usually eliminates US tax for Americans in higher-tax Canada.
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United States vs Canada at a glance
| Dimension | United States | Canada |
|---|---|---|
| Tax authority | IRS (federal) + 50 state revenue departments | Canada Revenue Agency (CRA) (federal + most provinces; Quebec also runs Revenu Québec) |
| Basis of taxation | Citizenship AND residence -- citizens/green-card holders taxed on worldwide income wherever they live | Residence -- you are taxed on worldwide income while a Canadian tax resident, and exit when you cease residence (with a departure tax) |
| Tax year | Calendar year (Jan 1 - Dec 31) | Calendar year (Jan 1 - Dec 31) |
| Top federal income tax rate | 37% federal | 33% federal -- but provincial tax adds 10-25+ points, pushing combined top rates above 50% in several provinces |
| Lowest rate | 10% federal | 14% federal (reduced from 15% effective July 1, 2025) |
| Capital gains | Long-term 0/15/20% + 3.8% NIIT; short-term at ordinary rates | 50% of the gain is included in income and taxed at ordinary rates (no preferential rate). The proposed 66.67% inclusion above $250,000 was cancelled |
| Dividends | Qualified dividends 0/15/20% | Gross-up-and-credit system: eligible and non-eligible dividends are grossed up, then a dividend tax credit offsets the tax |
| Tax-advantaged accounts | 401(k), Traditional/Roth IRA, HSA | RRSP (like a traditional IRA, treaty-recognized) and TFSA (tax-free in Canada, NOT recognized by the US) |
| Social/payroll tax | FICA 7.65% employee (15.3% self-employed) to the $184,500 SS wage base | CPP 5.95% to the year's maximum, plus CPP2 at 4% on a second earnings band; EI premiums on top |
| Consumption tax | No federal VAT; state + local sales tax | 5% federal GST, combined with provincial sales tax or harmonized into HST (13-15%) in many provinces |
Both tax worldwide income -- but only the US chases its citizens abroad
Canada and the US both tax their residents on worldwide income, so on the surface they look similar. The difference appears the moment you cross the border. A Canadian who moves to the US becomes a US tax resident and, once non-resident in Canada, generally drops out of Canadian income tax (subject to a departure 'deemed disposition' tax on the way out). An American who moves to Canada becomes a Canadian tax resident AND remains fully inside the US system as a citizen -- filing both a US 1040 and a Canadian T1 every year, with FBAR and FATCA reporting for Canadian accounts. Citizenship-based taxation is why the cross-border burden is asymmetric: it is much heavier for Americans going north than for Canadians coming south.
The treaty does a lot of work -- including for the RRSP
The US-Canada income tax treaty is one of the most developed in the world, and it solves several problems automatically. Most importantly for individuals, it recognizes the RRSP (Registered Retirement Savings Plan): a US person can elect to defer US tax on the income accruing inside an RRSP until withdrawal, matching the Canadian treatment, so the RRSP behaves much like a traditional IRA across the border. The treaty also coordinates pensions, government benefits, and the taxation of cross-border employment. Combined with the totalization agreement (which assigns you to one country's social-security system and prevents double CPP/Social Security tax), the treaty means most Americans in Canada are not actually double-taxed -- but they must claim the treaty positions correctly on their US return.
The TFSA is a trap for US persons
Canada's Tax-Free Savings Account (TFSA) is exactly what it sounds like in Canada -- no Canadian tax on anything inside it. But the US-Canada treaty does NOT extend RRSP-style recognition to the TFSA. To the IRS, a US person's TFSA is a currently taxable account: the income and gains are reportable and taxable on the US return each year, eliminating the entire point of the account for an American. Depending on how the TFSA is structured, it may also be treated as a foreign trust, triggering Forms 3520 and 3520-A, and TFSAs holding Canadian mutual funds or ETFs can fall under the punitive PFIC rules. Most cross-border advisers tell US persons in Canada to avoid the TFSA (or hold only cash) for exactly this reason -- the mirror image of the UK ISA problem.
Capital gains: a 50% inclusion rate, not a preferential rate
The two countries tax capital gains in fundamentally different ways. The US applies a preferential long-term rate (0/15/20%, plus the 3.8% NIIT). Canada has no preferential capital-gains rate at all -- instead it INCLUDES half the gain in your ordinary income and taxes that at your normal marginal rate. At a 50% inclusion rate and a combined top rate above 50%, the effective tax on a large Canadian capital gain can land in the mid-20s percent, broadly comparable to the US 20% + NIIT. The 2024 federal proposal to raise the inclusion rate to two-thirds (66.67%) on gains above $250,000 was deferred in January 2025 and then cancelled, so the 50% inclusion rate stands for 2026. For a US person, both systems apply to the same gain and the Foreign Tax Credit coordinates them.
Provincial tax is where Canada's burden really sits
Comparing only federal rates badly understates Canada's tax. The 33% federal top rate is lower than the US 37%, but every province levies its own income tax on top -- often 10 to 25-plus points -- so combined top marginal rates exceed 50% in provinces like Ontario, Quebec, Nova Scotia, and Newfoundland. This is roughly analogous to US state income tax, except Canadian provincial rates are generally higher than US state rates, and Quebec runs an entirely separate tax administration. When a US person computes the Foreign Tax Credit, it is the COMBINED federal-plus-provincial Canadian tax that credits against US tax -- which is usually more than enough to wipe out the US liability, because Canada is the higher-tax country at most income levels.
Consumption tax and what it funds
Canada layers a 5% federal Goods and Services Tax (GST) with provincial sales taxes, harmonized into a single 13-15% HST in many provinces -- a visible, broad consumption tax with no US federal equivalent (US consumption tax is state and local sales tax only). As in the UK, Canada funds universal public healthcare largely through general taxation, so Canadian residents do not carry the private health-insurance cost that dominates many American household budgets. The honest cross-border comparison again requires the full stack: federal and provincial income tax, CPP/EI, GST/HST, and what the public system delivers in return -- not headline rates alone.
Key facts
Frequently asked questions
Do Americans living in Canada have to file US taxes?
Yes. Because the US taxes citizens and green-card holders on worldwide income, an American in Canada files both a US Form 1040 and a Canadian T1 every year, plus FBAR and usually FATCA reporting for Canadian accounts. The US-Canada treaty and the Foreign Tax Credit prevent double taxation -- and because Canada is generally the higher-tax country, the credit usually eliminates the US tax owed -- but the US filing obligation itself does not go away until you formally expatriate. Canadians moving to the US, by contrast, generally leave the Canadian income-tax system once they become non-resident.
Is my Canadian TFSA tax-free in the US?
No. The TFSA is tax-free under Canadian law, but the US-Canada treaty does not recognize it the way it recognizes the RRSP. To the IRS, your TFSA is a currently taxable account, and it may also be treated as a foreign trust (triggering Forms 3520 and 3520-A) and can hold PFICs if it contains Canadian funds. This defeats the purpose of the account for US persons. The RRSP, by contrast, IS treaty-recognized and can be deferred for US purposes much like a traditional IRA -- so the standard advice is to use the RRSP and avoid (or hold only cash in) the TFSA.
Did Canada raise the capital gains inclusion rate to two-thirds?
No -- the proposal was cancelled. The 2024 federal budget proposed raising the capital-gains inclusion rate from 50% to 66.67% on gains above $250,000 for individuals. Implementation was deferred to January 1, 2026 in early 2025, and then the increase was cancelled altogether. So for 2026 the inclusion rate remains 50%: half of a capital gain is included in ordinary income and taxed at your marginal (federal plus provincial) rate. There is no separate preferential capital-gains rate in Canada the way there is in the US.
Are Canadian taxes higher than US taxes?
At most income levels, yes, once you include provincial tax -- combined federal-plus-provincial top rates exceed 50% in several provinces, versus a 37% US federal top rate plus state tax. That is why Americans in Canada usually find the Foreign Tax Credit more than covers their US liability. But the comparison depends on the full picture: Canada's 5% GST plus provincial sales tax, CPP/EI, and the fact that Canada funds universal healthcare through taxation while many Americans pay large private premiums. Headline federal rates alone (33% vs 37%) are misleading.
Primary sources
- IRS -- Foreign Tax Credit
- IRS -- Foreign Earned Income Exclusion
- IRS -- US income tax treaties A to Z
- IRS -- Totalization Agreements
- IRS -- US citizens and resident aliens abroad
- IRS -- About Form 1116 (Foreign Tax Credit)
- IRS -- About Form 2555 (Foreign Earned Income)
- IRC §911 Foreign earned income (Cornell)
- IRC §901 Foreign tax credit (Cornell)