SR&ED Documentation: Making Your Next Claim Audit-Proof

The Scientific Research and Experimental Development program just went through the most significant set of changes it has seen in more than ten years. First floated in the December 2024 Fall Economic Statement, expanded in the November 2025 federal budget, and finally enacted through Bill C-15, which received Royal Assent on March 26, 2026, the reforms touch how much a company can claim, which companies qualify, and what counts as an eligible expense in the first place (Welch LLP, 2026). None of that changes the one thing that actually determines whether a claim survives a CRA review: whether the underlying documentation can support it.

The 2024-2025 Overhaul, In Plain Terms

Four changes matter most for a typical claimant. First, the annual expenditure limit on which a Canadian-controlled private corporation can earn the enhanced, fully refundable 35% credit rose in stages, from $3 million to $4.5 million as originally proposed, then to $6 million in the final legislation (Mintz, 2025). Second, the taxable capital phase-out range used to determine where a CCPC sits on that scale widened from $10 million to $50 million, up to $15 million to $75 million (MNP, 2026). Third, eligibility for the enhanced credit now extends to certain Canadian public corporations for the first time, phased out based on average gross revenue over the prior three years rather than taxable capital (Norton Rose Fulbright, 2025). Fourth, and probably the change with the broadest practical impact, capital expenditures are eligible again for both the income deduction and the investment tax credit, for property acquired after December 15, 2024, reversing a restriction that had been in place since 2014 (SBLR LLP, 2026).

For a qualifying CCPC that fully uses the new limit, the enhanced credit can now generate up to $2.1 million a year in refundable cash back, versus $1.05 million under the old $3 million ceiling (MNP, 2026). Capital expenditures earn a somewhat different treatment: qualifying capital property gets a 40% refundability rate on the associated credit, rather than the full refundability that applies to current expenditures within a CCPC's limit (MNP, 2026). All of these changes apply to taxation years beginning on or after December 16, 2024, so a company with a calendar year end has likely already been operating under the new rules for a full fiscal year.

What "Contemporaneous" Actually Means

CRA reviewers consistently favour records created at the time the work happened over records reconstructed afterward to support a claim already being prepared. That's the practical meaning of "contemporaneous" in an SR&ED context: a lab notebook entry logged the day an experiment ran carries more weight than a narrative written eight months later that describes, from memory, what the team was probably doing that quarter. The federal government's own description of the modernization effort emphasizes that streamlined administrative requirements are not the same thing as reduced documentation standards, businesses are still expected to maintain records substantiating technical uncertainty, the systematic approach used to resolve it, and the actual costs incurred (Leyton, 2025).

The Four Documentation Pillars

Every claim ultimately rests on four categories of evidence, and a weakness in any one of them tends to be where a review finds its opening.

Technical narratives. A clear, specific description of what technological uncertainty existed, why routine engineering couldn't resolve it, and what systematic investigation was actually attempted, written in language a technically literate reviewer who wasn't in the room can follow.

Financial tracking. Accurate, project-level records of qualifying expenditures, salaries, materials, subcontractor costs, and now capital property, tied specifically to the SR&ED work rather than allocated after the fact using a rough percentage.

Time allocation. Documentation of the hours specific employees actually spent on eligible SR&ED activities, ideally captured through a timesheet or project-tracking system in near real time rather than reconstructed at year-end from memory.

Project progression. Records showing the actual arc of the work, hypotheses, experiments, results, failures, and iterations, that demonstrate a systematic investigation took place rather than a single successful build that got dressed up afterward as a formal research project (Leyton, 2025).

The New Pre-Claim Approval Process

Starting April 1, 2026, claimants can elect into a new pre-claim approval process that provides upfront technical validation of an SR&ED project before costs are even incurred, with a target review time of 90 days rather than the standard 180 (Norton Rose Fulbright, 2025). The CRA is also increasing its use of artificial intelligence in claim administration and has committed to reviewing the SR&ED claim form itself, Form T661, as part of a broader modernization push (SR Education, 2026). For a company planning a large or technically ambiguous project, opting into pre-claim approval trades some upfront process for materially more certainty before the spending happens, which is a trade worth taking seriously for anything near the boundary of what clearly qualifies.

Capital Expenditures Need Their Own Paper Trail

The restored capital expenditure eligibility is good news, but it comes with its own documentation burden that many companies haven't had to think about in over a decade. To qualify, equipment or property generally needs to be used all or substantially all, meaning 90% or more, of its operating time in the performance of SR&ED in Canada, or expected to consume substantially all of its value in that work (PwC Canada, 2025). That threshold means usage logs matter as much as purchase invoices. A piece of lab equipment shared between a commercial production line and an R&D project needs a credible way to demonstrate what share of its actual operating time went to each, not just an assertion at claim time.

A Documentation Checklist

1. Log technical work as it happens, not retroactively once the fiscal year has closed and the claim deadline is approaching.
2. Track employee time at the project level, ideally in the same system used for other project management, so SR&ED hours aren't a separate, easily-neglected exercise.
3. Keep usage logs for any capital equipment claimed, since the 90% operating-time threshold requires more than a one-time assertion.
4. Evaluate whether your project fits the new pre-claim approval process, particularly for large, multi-year, or technically ambiguous work starting after April 1, 2026.
5. Recalculate your expenditure limit under the new thresholds before assuming last year's phase-out position still applies; wider taxable capital and gross revenue bands mean some companies newly qualify for the enhanced rate.