If you are a Canadian who owns a US LLC, the foreign tax credit you assumed would prevent double taxation may not work the way you expect. The CRA treats a US LLC as a corporation. The IRS treats a single-member LLC as disregarded. That mismatch creates timing problems where the same dollar of profit is taxed in different years on each side, and the FTC ends up partially "trapped" with no offsetting Canadian tax to absorb. This post walks the decision tree, the trapped FTC mechanic, and a worked example.
30-second triage: T2209, Schedule 21, or 20(12) deduction?
Three routes, three different forms, three different limitation rules.
| You are | Form | Limitation rule |
|---|---|---|
| Canadian individual owning US LLC personally | Form T2209 (Federal Foreign Tax Credit) on T1 | FTC limited to Canadian tax on the same income |
| Canadian corporation owning US LLC | Schedule 21 (T2 Foreign Income Tax Credit) | Per-country limitation on T2 |
| Either, when FTC is partially unusable | Subsection 20(12) deduction | Reduces taxable income, not tax. Better when FTC limit is binding |
Most cross-border articles default to T2209. If your US LLC is owned by a Canadian holdco, Schedule 21 applies and the rules differ. If your FTC is being limited, the 20(12) deduction may yield a better effective rate.
The trapped FTC problem in plain language
A US LLC owned by a Canadian individual creates a US-Canada classification mismatch.
- US side (IRS view): Single-member LLC is disregarded. Income flows to the Canadian member. The member files Form 1040-NR (or Pro-Forma 1120 + 5472 with no income tax on the LLC) and pays US tax on the income in Year 1.
- Canada side (CRA view): US LLC is a foreign corporation. Income is taxed in Canada only when distributed to the member as a dividend. If the LLC retains earnings, no Canadian tax in Year 1.
Year 1: US tax paid, no Canadian tax. FTC has nothing to offset against. The credit becomes "trapped."
Year 2: LLC distributes profit to the member. Canada now wants tax on the dividend. But the US tax was paid in Year 1, which is outside Canada's 3-year carryback window for non-business FTC. The credit may expire unused.
This is the most cited problem with Canadian-owned US LLCs and the reason cross-border accountants often recommend other structures (Canadian corp, ULC, or Form 8832 corp election on the LLC).
T2209 personal route, line by line
Form T2209 (Federal Foreign Tax Credit) attaches to your T1 personal return.
Key fields:
- Foreign income reported on Canadian return: Net US LLC income, after Canadian-allowable expenses, in Canadian dollars
- Non-business income tax paid to foreign country: Net US tax paid (after FTC on US side, since the same dollar cannot be credited twice)
- Federal tax otherwise payable on foreign income: Canadian federal tax computed as if the foreign income were the only income (proportional allocation method)
- Credit allowed: Lower of (a) foreign tax paid or (b) federal tax otherwise payable on foreign income
The "lower of" formula creates the trapped portion. If US tax paid is $20,000 but Canadian federal tax otherwise payable on that income is only $15,000, the $5,000 difference is trapped. It can be carried back 3 years or forward 10 years for non-business income tax. For business income tax (rare for individual LLC owners), the carryforward is similar.
Provincial FTC is filed on Form T2036, separate from federal. Both have their own limitations.
Schedule 21 corporate route
If the US LLC is owned by a Canadian holdco, the corporate FTC mechanism applies.
Schedule 21 of the T2 has separate columns for non-business income tax and business income tax, and applies the per-country limitation. The corporate FTC limit on each country's foreign income is the lesser of:
- Foreign tax paid, or
- Canadian federal corporate tax on that foreign source income
Carryforward for corporate FTC on business income is up to 10 years. Non-business income tax FTC for corporations cannot be carried forward at all under most circumstances, which is one reason holdco structures sometimes use the 20(12) deduction route instead.
20(12) deduction alternative
Subsection 20(12) of the Income Tax Act allows a deduction for foreign taxes paid in computing income, in lieu of the FTC. This sounds like a worse deal at first glance because credits are usually better than deductions. But there are scenarios where 20(12) wins.
When 20(12) deduction is better:
- Year 1 trapped FTC scenario, where you have foreign tax paid but no domestic tax to offset against
- Corporate non-business FTC where carryforward is unavailable
- When the foreign income would otherwise push you into a higher Canadian bracket
You cannot claim both 20(12) and the FTC on the same foreign tax. Choose one per dollar of foreign tax. Optimization sometimes splits dollars between the two depending on character.
Worked example: Canadian individual with $100K US LLC profit
Concrete numbers ground the abstract rules.
Assumptions:
- Canadian individual, Ontario resident, marginal rate 47%
- US LLC profit in Year 1: $100,000 USD
- Currency conversion at $1.35 CAD: $135,000 CAD
- US tax paid in Year 1: $20,000 USD = $27,000 CAD (assuming 20% effective US rate)
- Canadian federal rate on equivalent income tier: 33%
- Canadian provincial rate (Ontario top bracket): 13.16%
If LLC retains earnings in Year 1:
| Item | Amount (CAD) |
|---|---|
| US tax paid | $27,000 |
| Canadian tax on dividend (none, no distribution) | $0 |
| FTC available to claim in Year 1 | $0 (no Canadian tax to offset) |
| Trapped FTC | $27,000 |
| Carryforward to Year 2-10 | $27,000 |
If LLC distributes to member in Year 2:
| Item | Amount (CAD) |
|---|---|
| Dividend received in Year 2 | $135,000 |
| Canadian federal + provincial tax on dividend (47% marginal) | $63,450 |
| FTC carryforward applied | up to $27,000 limited by FTC limit on dividend |
| Net Canadian tax | $36,450 |
| Combined US + Canadian | $63,450 (in line with Canadian rate) |
If LLC distributes the same year as profit (Year 1):
| Item | Amount (CAD) |
|---|---|
| US tax paid | $27,000 |
| Canadian dividend income | $135,000 |
| Canadian tax | $63,450 |
| FTC applied (lower of US tax or Canadian tax on foreign income) | $27,000 |
| Net Canadian tax | $36,450 |
The third scenario, distributing in the same year, avoids trapped FTC. This is why many cross-border CPAs advise Canadian LLC owners to take distributions matching profit recognition rather than retaining inside the LLC.
Carryforward and carryback rules
| Type | Carryback | Carryforward |
|---|---|---|
| Non-business income tax FTC, individual | 3 years | 10 years |
| Business income tax FTC, individual | 3 years | 10 years |
| Non-business FTC, corporation | None | None |
| Business income tax FTC, corporation | 3 years | 10 years |
Non-business income tax includes withholding tax on US-source interest, dividends, and royalties. Business income tax is tax on active business profits, including most LLC operating income.
For Canadian LLC owners, the FTC carryforward window is generally 10 years. Use it. Many trapped FTCs expire unused because the owner did not match distributions to recovery years.
Article IV(7)(b) treaty access
The Canada-US tax treaty has Article IV(7)(b), which generally denies treaty benefits to LLCs. The implication: a Canadian who would otherwise get reduced US withholding rates on dividends or royalties paid into an LLC may not, because the LLC itself is not eligible.
Workaround: file W-8BEN as the underlying Canadian member, claiming treaty benefits in your individual capacity. The LLC is fiscally transparent on the US side, so the IRS looks through to you. This works only if you correctly apply the disregarded entity treatment.
If the LLC has elected corporate taxation via Form 8832, Article IV(7)(b) does not apply because the LLC is no longer fiscally transparent. Treaty rates flow normally. This is one reason the Form 8832 corp election is sometimes preferred for Canadian-owned LLCs receiving regular US-source passive income.
Restructuring to permanently avoid trapped FTC
Two structural changes commonly fix the mismatch:
Form 8832 corp election on the LLC: Treats the LLC as a US corporation for federal tax purposes. Income is now taxed at the LLC level in the US (corporate rate 21%), with subsequent distributions to Canada as dividends. The CRA also sees a corporation. Both sides agree on entity classification, and FTC timing matches.
Canadian holding company owns the LLC: Canadian Hold Co owns 100% of US LLC. The LLC files in the US under whatever classification. The Canadian Hold Co receives distributions and pays Canadian corporate tax, with FTC applied on Schedule 21. The individual is shielded from direct US-Canadian timing mismatches.
Both options have ongoing compliance cost. They are worthwhile only if the LLC generates enough profit to absorb the additional structuring overhead. Below roughly $50,000 USD annual profit, simpler structures often win after costs.
Frequently asked questions
Who is eligible for the foreign tax credit in Canada? Any Canadian resident taxpayer who paid foreign income or profits tax on income reported on the Canadian return. Both individuals and corporations qualify, with different forms and limitation rules.
What foreign taxes qualify for the FTC? Income or profits tax paid to a foreign government. US federal income tax qualifies. State income tax also qualifies as foreign tax for FTC purposes. Sales tax, property tax, and most withholding on non-income items do not qualify.
Does Canada have a tax treaty benefit with the US? Yes, but Article IV(7)(b) limits treaty access for LLCs. Treaty benefits often flow to the underlying Canadian member rather than to the LLC itself, and the structure must be designed to use this correctly.