Foreign Tax Credit

Definition

Canadian residents are taxed on worldwide income, which can create double taxation when foreign-source income is also taxed by another country. The Foreign Tax Credit (FTC) under ITA s.126 reduces Canadian federal tax by the foreign income or profits tax paid on that foreign income, up to the Canadian tax otherwise payable on it. Separate calculations apply to non-business income (investment income, passive dividends, interest) and business income. The FTC is calculated and claimed on Form T2209 for federal purposes, with a parallel provincial calculation (T2036 or provincial equivalents).

Key rules

• Two streams: non-business-income tax and business-income tax. Each has its own limit and its own line on the T1.
• The credit is the lesser of foreign tax actually paid and Canadian tax otherwise payable on the same foreign income.
• Non-business-income FTC is generally capped at 15% of the foreign income amount under most tax treaties (for example, US dividends under the Canada-US treaty). Excess withholding can often be recovered by filing in the source country or reclaiming via treaty relief.
• Business-income FTC can be carried forward 10 years and back 3 years to the extent the credit exceeds current-year Canadian tax on that source.
• Non-business-income FTC has no carryforward if unused, so it is a pure "use it or lose it" credit in most cases. The unused amount may be deductible under s.20(11) to the extent foreign tax exceeds 15% of non-business foreign income.
• Claims must be made per source country separately.
• The credit requires documentation: foreign tax return or slip, proof of payment, and a calculation for each country.

Example

A Canadian resident earns the following in 2026:

• US dividends: USD $5,000 (approximately CAD $6,800), with US withholding of 15% = CAD $1,020.
• UK interest: GBP $2,000 (approximately CAD $3,400), with UK withholding of 10% = CAD $340.

On the T1:
  Foreign non-business income reported  $10,200
  Gross income stays in Canadian tax
  
FTC calculation per country:
  US:  lesser of $1,020 and (US income x average Canadian rate) = $1,020 (fully creditable)
  UK:  lesser of $340 and limit              = $340 (fully creditable)

Line 40500 Federal FTC claimed            $1,360

If additional US tax had been withheld above 15% in error, the Canadian FTC would be capped at 15% and the excess would need to be reclaimed directly from the IRS by filing Form 1040-NR or similar.

Common mistakes

• Claiming the gross foreign dividend in income but forgetting to add back gross-up or withholding, so the credit does not tie to the reported income.
• Claiming US withholding tax above the treaty rate without reclaiming the excess from the US.
• Mixing business and non-business FTC in one calculation.
• Forgetting the parallel provincial FTC, which is calculated on a separate form at the province's lowest rate and can be lost if not claimed.
• Missing Form T1135 when foreign property exceeds $100,000 cost, which is separate from the FTC but often co-exists with foreign income.

Related concepts

The FTC is one of the credit lines on the T1 return and interacts with the rate structure in the federal bracket schedule. Foreign dividends do not qualify for the Canadian eligible or non-eligible dividend gross-up and credit, so the FTC is often the only relief available on foreign investment income.