Federal eligibility is Canada-wide. Provinces add their own R&D credits and schedules; Yukon, NWT, and Nunavut claim federal SR&ED through the T661 without a territorial equivalent.
Companies in Yukon, the Northwest Territories, and Nunavut are eligible for federal SR&ED — there is no separate territorial R&D tax credit to file alongside the T661.
Not sure whether to use software, hire a large firm, or file yourself? These guides break down the trade-offs.
Start with a free readiness score, or talk to a consultant about your project and fiscal year.