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US-Canada business tax for Canadian founders

When a Canadian owner establishes, acquires or operates a US business, the entity choice, filings, transactions and owner reporting need to work together. Illuminous Accounting maps the obligations, prepares the agreed filings and keeps the US and Canadian positions coordinated under one defined scope.

Discuss Your Cross-Border Business

When separate filings create one connected problem

A US entity can affect Canadian corporate reporting, owner compensation, foreign tax credits, intercompany balances and information returns. Looking at only one return can leave gaps between the legal structure, accounting records and tax treatment. The engagement starts with the complete ownership and activity picture so that each filing reflects the same underlying facts.

US entity setup and classification

Review of LLC, corporation and connected Canadian-entity treatment before formation or after the structure has begun operating.

Annual and transactional filings

Defined US and Canadian business filings, Form 5472, owner reporting and catch-up work where prior obligations are incomplete.

Intercompany and owner activity

Loans, management charges, compensation, distributions and shared expenses reviewed against the books and treatment in both countries.

What the engagement can include

  • Entity and ownership map: countries, owners, classifications and filing relationships.
  • Obligation register: returns, information forms, deadlines and responsible parties.
  • Filing preparation: the US and Canadian filings included in the written scope.
  • Transaction review: capital, loans, fees, payroll, distributions and intercompany activity.
  • Owner coordination: identification of owner-level reporting connected to the business.
  • Forward calendar: records and decisions needed before the next filing cycle.

What determines the scope

Scope depends on the number and type of entities, ownership, states and provinces involved, filing history, transaction volume and whether another adviser is preparing part of the Canadian or US work. The first consultation identifies the immediate risk and the records needed for a fixed written proposal.

Start with the real structure

Bring formation documents, prior returns and current financial statements. If the structure has changed, include the acquisition, sale, loan or reorganization documents that explain the change.

A clear process from issue to filing calendar

01

Map

Identify entities, owners, jurisdictions and business activity.

02

Review

Compare prior filings, books and transactions for gaps or inconsistencies.

03

Scope

Confirm deliverables, responsibilities, timing and fee in writing.

04

Coordinate

Prepare the agreed work and maintain a forward compliance calendar.

Related cross-border guidance

US LLCs for Canadians →Form 5472 for foreign-owned US LLCs →Form 1040-NR tax return →E-2 founder tax and accounting →Cross-border bookkeeping and payroll →

Direct professional access

Work with the person responsible for the file

Gurleen Kaur founded Illuminous Accounting after experience at Deloitte and Grant Thornton. She is a Licensed CPA in the State of Washington, USA. The engagement is built around direct communication, a written scope and coordinated records rather than separate firms working from different versions of the facts.

US-Canada business tax FAQs

Who is this cross-border business tax service for?
It is designed for Canadian founders and owner-led businesses with a US entity, US customers, employees, investment, property or expansion plans that create connected filing and reporting questions in both countries.
Can you review a US LLC owned by a Canadian?
Yes. The review considers how the LLC is classified in the United States, how Canada may characterize the entity and income, which owner and entity filings are required, and whether the existing structure creates a mismatch or double-tax concern.
Does the engagement include both US and Canadian filings?
The exact scope is confirmed after reviewing the entities, owners and filing history. It may include coordinated US and Canadian business or owner reporting, or a defined US filing scope coordinated with your Canadian adviser.
What documents are needed for the first review?
Helpful documents include the entity chart, formation documents, ownership records, prior returns, financial statements, payroll summaries, intercompany agreements and a list of the questions or transactions that triggered the review.
Can prior-year filings be corrected?
Potentially. The appropriate correction method depends on which returns or information forms were missed, whether tax is due, prior correspondence and the facts behind the filing gap. The available path is assessed before late forms are submitted.

Map the obligations before filing season

Bring the entity chart, prior returns and current questions. The first consultation is free.

Request a ConsultationCall +1-206-209-8210