Connect Canadian SR&ED technical evidence with the cost claim

An engineering project code may cover research, routine implementation, customer support and commercial launch work. Before extracting costs, agree the work the specialist is assessing for the Canadian SR&ED claim. Give it a reference that connects the technical description, people involved, work dates and expenditure schedule. Do not assume the whole product budget shares one eligibility conclusion.

CRA's Form T661 guidance asks for evidence supporting the work described and the expenditures claimed. It emphasizes relevant records created while the work was performed, without treating a particular document checklist as proof of eligibility. Preserve the actual experiments, analysis and conclusions, including unsuccessful work, rather than rewriting ordinary project notes to sound like a tax test.

Build a chronology identifying which work occurred during the claim year and which belonged to earlier or later periods. Link technical milestones to the employees, contractor work and materials involved. If a project continues across years, preserve the transition so the same activity and cost are not presented as new in two claims.

Ask the technical owner to identify the evidence supporting each material phase. Finance should then connect that phase to recorded costs and the proposed allocation. Where records are reconstructed, label the reconstruction and retain its basis. A reasonable-looking percentage should not conceal that no one has yet explained which work it represents.

CRA allows the traditional or proxy method for a tax year, and says the selection cannot be changed for that year once Form T661 is filed. The traditional method requires specifically identified overhead and other qualifying expenditures. The proxy method uses a prescribed proxy amount for the relevant overhead treatment instead. Obtain the specialist's method decision before completing the cost package.

That choice changes what the schedule must support. Under the traditional method, retain the basis for the claimed overhead allocation. Under the proxy method, preserve the reviewed salary base and proxy calculation, and avoid adding the overhead it represents again. The proxy amount can support an investment tax credit calculation but is not itself a deductible SR&ED expenditure.

Keep a bridge from the ledger population to proposed SR&ED expenditures and then to the qualified expenditures used for the investment tax credit. These are separate calculations in T661. Explain exclusions, assistance, contract treatment and other reviewed adjustments rather than inserting one claim total into every schedule.

For shared staff, connect payroll to the work allocation and the applicable claim treatment. For contractors, retain the agreement, deliverables and relationship facts. A cost may be real and correctly recorded in the books while still requiring different treatment in the claim. Keep the review conclusion beside the amount so the reconciliation remains understandable after filing.

Save the final project descriptions, method election, cost bridge and evidence index with the submitted claim. Identify who can explain the technical work and who can reproduce the financial calculation. CRA's review guidance asks how costs were tracked and linked to the work, including the basis of estimates. A complete file should answer that question without promising that documented expenditure automatically qualifies.