IN THIS GUIDE · Identify the employer behind the demand for professional services
Start with the TN eligibility and application overview
Separate the customer request from the offer
Hypothetical example: a business asks for professional services while an employer prepares the assignment. Identify the actual employer, duties, period and remuneration. A customer’s interest does not automatically establish the complete employment terms.
Apply the prescribed profession and credentials
TN principals require Canadian or Mexican citizenship and the qualifications for a listed professional activity. Explain actual duties before selecting a listing. Experience is not a universal substitute for a required degree.
Clarify credentials and ownership
Degrees from institutions outside Canada, Mexico and the United States require reliable evaluation; translation is distinct. Explain applicant ownership and customer relationships. Services to a U.S. entity solely owned or controlled by the applicant are outside the permitted arrangement, while foreign ownership alone is not a blanket exclusion.
Review permission for the actual work
A customer deadline or signed commercial contract does not itself authorize employment. Assess the actual process and relevant employer or duty changes before starting. Do not infer permission from Canadian payment or a short assignment.
Apply the temporary-work and credential boundaries
A Canadian citizen generally may seek TN admission without first obtaining a TN visa; a Mexican citizen generally needs the visa. The actual temporary assignment and any required U.S. practice licence remain separate from profession eligibility. A foreign business interest alone does not disqualify an applicant: the prohibited arrangement is services to a U.S. entity solely owned or controlled by that applicant.
Identify which listed profession the duties actually describe
Depending on what actually changed, the practical response can range from no new filing, to a new employer-specific letter for the next border entry or extension, to a fresh determination of whether the post-merger duties still fit a listed profession. Industrial Designer is listed with a baccalaureate or licenciatura degree, or a qualifying postsecondary diploma or certificate plus three years of experience. The letter should describe the systems analysed, the requirements gathered and the design decisions made, in enough detail that the officer can recognise the listed profession. Where a licence exists, provincial technologist certification can help describe the discipline but is not the same as a professional engineer licence. What does not work is experience alone: an accounting manager without a qualifying degree or designation cannot rely on tenure, because the Accountant entry, unlike some others on the list, offers no experience alternative. Two records carry this comparison: the listed entry for the profession, with the minimum requirement stated in it, and the applicant’s credential in its issued form — the parchment, the transcript, or the licence certificate naming its issuing body and its scope. A Canadian professional normally seeks TN classification through border inspection or preclearance; in some cases the U.S. employer submits an I-129 petition to USCIS before the changed work begins. Preserve the genuine credential rather than translating its title into a qualification the institution did not award.
Sources reviewed 2026-09-07. This guide covers a preparation focus; it is not an individual eligibility assessment.