SR&ED Knowledge Hub

Free SR&ED resources for Canadian businesses: eligibility guides, T661 form references, filing deadline calculators, and documentation checklists.

All SR&ED Basics Filing & Documentation Platform

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SR&ED Basics

What is SR&ED?

Canada's primary R&D tax incentive explained — what qualifies, how credits work, and who can claim.

SR&ED Basics

Who may qualify?

Industries, criteria, and common misconceptions about SR&ED eligibility for Canadian businesses.

Filing & Documentation

What is Form T661?

The CRA's official SR&ED expenditures claim form — key sections and what each part requires.

Filing & Documentation

Documentation guide

What contemporaneous evidence CRA expects and how to organize it for a defensible claim.

Platform

DIY vs. Consultant

Compare fixed-fee software with traditional percentage-based SR&ED consultants.

Filing & Documentation

Filing deadlines

Critical SR&ED deadlines — when to file, what happens if you miss them, and how to track.

SR&ED Basics

Provincial credits

Ontario, Quebec, BC, and other provincial SR&ED supplements explained.

Filing & Documentation

Common mistakes

The most frequent errors that weaken or disqualify SR&ED claims — and how to avoid them.

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