CRA SR&ED Claim Disputes: What to Do When Your Claim Is Denied or Reduced

The Scientific Research and Experimental Development (SR&ED) program is Canada’s largest tax incentive, delivering roughly $3 billion annually in tax credits. It is also one of the most disputed. The CRA’s SR&ED review process is aggressive, the eligibility criteria are subjective, and the denial rate has climbed. When the CRA reduces or denies your claim, you have three avenues: informal resolution with the SR&ED reviewer, a formal notice of objection, and the Tax Court of Canada. Each stage has different success rates, costs, and strategic considerations. The choice depends on why the claim was denied, how much money is at stake, and whether the technical or financial side of the claim is the problem.

Why did the CRA deny or reduce my SR&ED claim?

The CRA evaluates SR&ED claims against five eligibility criteria. Failing any one of them is grounds for denial:

No technological uncertainty. The CRA’s most common denial reason. If the work used known techniques to solve a problem that had an available solution, there is no technological uncertainty. The CRA looks for whether the outcome could have been predicted using publicly available information and standard engineering or scientific methods. “We did not know if our approach would work” is not sufficient; the uncertainty must be technological (about the science or engineering), not commercial (about the market or business model) or routine (about implementation).

No systematic investigation. The CRA requires a hypothesis-driven approach: formulate a hypothesis, design experiments or analyses, test, analyze results, and draw conclusions. If the company’s records show trial-and-error without a structured methodology, the CRA will deny the claim. The CRA’s position: iterative development is not the same as systematic investigation.

No technological advancement. The work must have advanced the understanding of the underlying technology, not just created a new product or feature. The advancement must go beyond what was publicly available. An incremental improvement using known methods does not qualify.

Ineligible expenditures. The financial side: the CRA disallows costs that are not directly attributable to the SR&ED work (overhead allocation errors, management time, marketing activities billed as SR&ED, equipment used partly for non-SR&ED purposes without proper allocation).

Inadequate documentation. The CRA expects contemporaneous documentation (notes, test results, design iterations, meeting minutes, emails) that supports each element of the claim. After-the-fact narratives written specifically for the SR&ED claim carry less weight than documents created during the work.

What happens during the CRA’s SR&ED review?

The CRA assigns a Research and Technology Advisor (RTA) for the technical review and a Financial Reviewer (FR) for the financial side. The review typically unfolds as:

1. The CRA contacts you. The RTA requests a meeting (usually on-site or virtual) to discuss the projects claimed. The FR may request financial records separately.

2. The technical interview. The RTA interviews the people who performed the work (engineers, scientists, developers). The RTA is assessing whether the work meets the five criteria. This interview is the most critical stage. The people being interviewed should understand the SR&ED criteria and be able to articulate the uncertainty, the hypothesis, and the advancement, not just describe what they built.

3. The proposed adjustment. If the RTA determines that some or all projects do not qualify, the CRA issues a proposed adjustment letter explaining which projects were denied and why. At this stage, you have the opportunity to provide additional information or documentation.

4. The final determination. If you cannot resolve the issue informally, the CRA issues a reassessment (or confirms the original assessment if the claim was processed but reduced).

Should I try informal resolution first?

Yes, almost always. The informal review stage (responding to the RTA’s proposed adjustment before a formal reassessment is issued) is your best opportunity to influence the outcome with the least cost. At this stage:

• You can provide additional documentation (test results, design notebooks, emails showing the systematic investigation) that was not in the original submission.
• You can clarify the technological uncertainty in terms the RTA understands. A common problem: the SR&ED application was written by a consultant who used boilerplate language, and the RTA could not identify the specific uncertainty from the submission. Providing a clear, project-specific explanation can change the outcome.
• The RTA has authority to accept or modify the proposed adjustment without going to formal objection.

If the RTA issues a final determination that you disagree with, the next step is a formal notice of objection.

What are the objection success rates for SR&ED?

Lower than average. The CRA’s overall objection success rate (taxpayer wins in whole or in part) is approximately 55% across all issue types. For SR&ED claims specifically, the success rate is below 40%. The reasons:

The technical determination is hard to overturn. The CRA’s RTA is a subject-matter specialist. The Appeals officer who handles the objection is typically not a technical expert and relies heavily on the RTA’s assessment. To overturn a technical denial, you often need to present new evidence or a fundamentally different framing of the uncertainty.

Documentation gaps cannot be filled retroactively. If the CRA denied the claim because of inadequate contemporaneous documentation, the objection stage cannot fix this. You cannot create documentation after the fact and present it as contemporaneous. You can, however, point to existing documents the RTA missed or did not review.

The “standard practice” determination is subjective. When the CRA says the work used standard techniques and therefore had no technological uncertainty, the dispute becomes a battle of expert opinions. At the objection level, the Appeals officer may defer to the RTA’s expertise.

When should I go to Tax Court?

Tax Court is the most expensive option but has the highest success rate for meritorious claims. Consider Tax Court when:

The amount is large enough to justify the cost. Legal and expert witness fees for a SR&ED Tax Court case typically range from $50,000 to $200,000 for the General Procedure. The Informal Procedure (under $25,000 per year in dispute) is significantly cheaper and does not require a lawyer, but the evidentiary standards are the same.

You have strong technical evidence. Tax Court judges hear expert testimony from both sides. If you can present a credible expert who explains why the work involved genuine technological uncertainty, the court may disagree with the CRA’s RTA. Several Tax Court decisions have overturned CRA SR&ED denials where the court found the RTA’s assessment of “standard practice” was too narrow.

The CRA’s denial is based on an incorrect understanding of the technology. If the RTA misunderstood the work (common in software, biotechnology, and advanced manufacturing), Tax Court provides a forum for a full technical hearing that the objection process does not.

The precedent matters. If you make SR&ED claims annually and the CRA’s denial sets a pattern that will affect future claims, a Tax Court win establishes a precedent for your company.

What about the financial side?

Even when the technical eligibility is not disputed, the CRA frequently reduces claims on financial grounds:

Overhead allocation. The CRA’s proxy method (for companies that do not track SR&ED costs separately) allows a prescribed overhead percentage. If you used the traditional method and claimed specific overhead, the CRA may challenge the allocation methodology.

Contractor costs. Third-party contractor costs are only eligible if the contractor performed the SR&ED work (not just routine programming or testing). The CRA often reclassifies contractor costs as non-SR&ED.

Time tracking. If employees split time between SR&ED and non-SR&ED activities, the CRA expects time records that separate the two. Estimates without supporting records are vulnerable to reduction.

Capital equipment. Equipment used for SR&ED is eligible, but the CRA requires evidence that the equipment was primarily used for SR&ED (not for production or commercial purposes).

How does this interact with cross-border operations?

For companies with both Canadian and US operations:

US R&D credit (IRC 41). Work that qualifies for Canadian SR&ED may also qualify for the US R&D credit, but the criteria differ. The US credit requires a “four-part test” (permitted purpose, technological in nature, elimination of uncertainty, process of experimentation). A CRA denial of the Canadian claim does not affect the US credit eligibility, but the CRA’s reasoning may signal issues the IRS would also raise.

Transfer pricing. If the SR&ED work benefits both the Canadian entity and a US parent or affiliate, transfer pricing rules may require that the cost-sharing or intercompany charges be at arm’s length. The CRA’s review of SR&ED costs sometimes overlaps with transfer pricing inquiries.

Director liability. If the CRA reduces the SR&ED ITC and the company cannot pay the resulting tax liability, directors may face personal liability under ITA 227.1 for the company’s unremitted source deductions.

What should I do next?

If the CRA has proposed reducing or denying your SR&ED claim: review the proposed adjustment letter carefully to identify which criterion failed (uncertainty, investigation, advancement, or expenditures). Gather any documentation that was not in the original submission. Prepare for the informal review with the RTA by framing the work in SR&ED terms (not product terms). If informal resolution fails, file a notice of objection within 90 days of the reassessment. For claims worth more than $100,000, engage a SR&ED specialist or tax litigation lawyer before the objection stage. Document everything going forward: contemporaneous records are the single biggest factor in SR&ED disputes.

This guide is general information, not tax advice for your specific situation. Which points apply, and how, depends on your facts.