The US LLC Tax Trap for Canadians: Why a Disregarded Entity Creates Double Taxation

A single-member US LLC is one of the most common, and most damaging, tax structures a Canadian resident can hold. In the US, the LLC is a “disregarded entity” for federal tax purposes: it does not file its own return, and its income flows directly to the owner’s personal return. In Canada, the CRA treats the LLC as a foreign corporation, because it has limited liability and a separate legal existence under state law. This mismatch means the LLC’s income is taxed as personal income in the US (at rates up to 37%) but treated as corporate income in Canada (eligible only for the foreign affiliate rules or the foreign accrual property income regime). The foreign tax credit mechanism that normally prevents double taxation breaks down, because the two countries are taxing different taxpayers on different characterizations of the same income.

Why does the mismatch exist?

The US and Canada classify entities differently. The US uses a “check-the-box” system under Reg 301.7701-3, which allows most domestic entities to elect their classification. A single-member LLC defaults to a disregarded entity (taxed as a sole proprietorship). A multi-member LLC defaults to a partnership. Either can elect to be taxed as a corporation, but most do not.

Canada does not have a check-the-box system. The CRA classifies foreign entities based on their legal characteristics. An LLC has limited liability, can have perpetual existence, and is a separate legal person under state law. These characteristics make it look like a corporation to the CRA. The CRA’s administrative position, confirmed in multiple technical interpretations, is that a US LLC is a corporation for Canadian tax purposes, regardless of its US tax classification.

This means:

• US view: The LLC does not exist for tax purposes. The owner reports the LLC’s income directly.
• Canadian view: The LLC is a foreign corporation. The owner is a shareholder, not an operator. The income belongs to the corporation until it is distributed.

How does the double taxation happen?

The double taxation arises because the foreign tax credit system in Canada is designed to credit taxes paid by the same taxpayer on the same income. When the US taxes the individual and Canada treats the income as belonging to a corporation, the credits do not align.

Step 1: US taxation. The US taxes the LLC’s income on the owner’s Form 1040-NR (or 1040 for citizens). The owner pays US personal income tax at graduated rates. If the LLC earns $200,000, the US tax might be $45,000.

Step 2: Canadian taxation. Canada treats the LLC as a controlled foreign affiliate (CFA) of the Canadian resident. If the LLC’s income is “foreign accrual property income” (FAPI, meaning passive income like investment income, rent from property not used in an active business, or certain service income), Canada taxes the owner on the FAPI in the year it is earned, regardless of whether it is distributed. If the income is active business income, it goes into the affiliate’s “exempt surplus” or “taxable surplus” pool and is taxed in Canada only when a dividend is paid.

Step 3: Credit mismatch. The Canadian owner tries to claim a foreign tax credit for the US tax paid. But the US tax was paid by the individual on income that Canada says belongs to the corporation. The CRA’s position: the US personal tax is not a tax paid by the LLC (the “corporation”), so it does not generate a deductible tax in the foreign affiliate surplus calculations. And it is not a personal foreign tax credit because the income, from Canada’s perspective, is not the individual’s income (it is the corporation’s income, included in the individual’s income only through the FAPI or dividend mechanism).

The result: the $200,000 is taxed in the US at personal rates ($45,000) and also taxed in Canada through the FAPI or dividend mechanism, with little or no credit for the US tax already paid.

What are the solutions?

Several structures avoid or mitigate the double taxation:

Option 1: Elect corporate taxation for the LLC. The LLC can file Form 8832 (Entity Classification Election) and elect to be treated as a corporation for US tax purposes. This aligns the US and Canadian classifications: both countries treat the LLC as a corporation. The LLC files Form 1120 and pays US corporate tax at 21%. Distributions to the Canadian owner are dividends, subject to 5% treaty withholding. The Canadian owner includes the dividend in income and claims the foreign affiliate deduction or foreign tax credit.

The downside: the corporate rate (21%) plus the withholding rate (5%) may be higher than the blended personal rate would have been. And the owner loses the ability to use LLC losses against personal income.

Option 2: Use a US C-Corporation instead of an LLC. If the business is being set up fresh, forming a C-Corporation instead of an LLC avoids the entity classification mismatch entirely. Both countries treat the C-Corp as a corporation. The tax treatment follows the same path as Option 1.

Option 3: Use a Canadian corporation to hold the LLC. The Canadian resident forms a Canadian corporation (Canco), and Canco owns the US LLC. The LLC remains disregarded for US purposes, so the LLC’s income flows to Canco’s Form 1040-NR (Canco is the single member). Canada treats the LLC as a foreign affiliate of Canco. The surplus pool mechanics work more cleanly in a corporate-to-corporate chain, and the Canadian shareholder is one level removed.

Option 4: Elect to have the LLC taxed as an S-Corporation. This does not work for Canadian residents. S-Corporation shareholders must be US citizens or residents. A Canadian resident is not eligible to be an S-Corp shareholder, and the election would be invalid.

What if you already own a US LLC?

If a Canadian resident already owns a disregarded US LLC, the fix depends on whether the income is active business income or passive income, and whether the owner is also a US person.

US citizen living in Canada: The double taxation problem is less severe because the US citizen files a US return on worldwide income and Canada gives a foreign tax credit for US tax paid. The mismatch still exists (Canada treats the LLC as a corporation), but the US citizen’s ability to claim credits in both directions provides more relief.

Canadian resident, not a US citizen: The mismatch is at its worst. The immediate step is to evaluate whether electing corporate classification (Form 8832) produces a better result. The election can be filed retroactively for up to 75 days before the filing date, or prospectively for a future effective date. A retroactive election beyond 75 days requires a reasonable cause statement and IRS approval.

The cost of restructuring (Form 8832 filing, possible tax on the deemed contribution of assets to the “new” corporation, state-level consequences) should be compared against the ongoing cost of double taxation. For most Canadian-owned US LLCs with material income, the restructuring pays for itself within one to two years.

What about multi-member US LLCs?

A multi-member US LLC defaults to a partnership for US tax purposes. Canada also treats it as a corporation (the same analysis: limited liability, separate legal existence). The mismatch is similar but more complex, because partnership allocations in the US do not match corporate distribution rules in Canada. Each member’s share of the LLC’s income is taxed in the US as a partnership distributive share, while Canada treats each member as a shareholder of a foreign corporation.

The same solutions apply: elect corporate classification, use a C-Corp, or interpose a Canadian holding company. The multi-member context adds complexity around the partnership agreement terms and the unanimous consent typically needed for entity classification elections.

What forms are involved?

• Form 8832 (Entity Classification Election): filed to change the LLC’s US tax classification from disregarded entity to corporation (or from partnership to corporation for multi-member LLCs).
• Form 1040-NR or Form 1120-F: the US return filed by the Canadian owner (1040-NR for individuals, 1120-F if a Canadian corporation owns the LLC).
• Form 1120: filed by the LLC if it elects corporate classification.
• T1134 (Information Return Relating to Controlled and Non-Controlled Foreign Affiliates): filed by the Canadian owner to report the foreign affiliate (the LLC treated as a corporation).
• T1 with Form T2209: the Canadian return, claiming foreign tax credits where available.
• FBAR (FinCEN 114): the US LLC’s bank account is a “foreign financial account” from the Canadian owner’s US reporting perspective (if the owner is a US person) or a Canadian reporting perspective (if the account is reportable under Canadian foreign property rules on Form T1135).

Related guides:

• Cross-border business structures compared, how LLCs, C-Corps, and Canadian holdcos compare for operating in both countries
• Transfer pricing for small cross-border businesses, how to set and document arm’s-length pricing when your Canadian company transacts with a related US entity

This guide is general information, not tax advice for your specific situation. Which points apply, and how, depends on your facts.