SR&ED Claim Disputes and Reviews

The scientific research and experimental development program is one of the largest federal support measures for Canadian business, and it is delivered entirely through the tax system. A qualifying business deducts its SR&ED expenditures in computing income and, beyond that, earns an investment tax credit that reduces tax payable and, for many Canadian-controlled private corporations, produces a cash refund. Because the program pays out real money, the Canada Revenue Agency reviews claims carefully, and a significant portion of what is claimed each year is reduced or denied on review. When that happens, the business is left to decide whether to accept the cut or to dispute it.

This page explains how SR&ED works in the Income Tax Act — the definition in subsection 248(1), the deduction rules in section 37, and the investment tax credit in section 127 — and then how the CRA reviews claims through its technical (eligibility) and financial reviews, why claims are most often denied or reduced, and how a business objects and appeals when it disagrees. Throughout, the importance of contemporaneous documentation runs as a constant theme. This is general information about Canadian federal tax law, not legal advice for your particular situation.

What SR&ED is and how the credit is built

SR&ED is defined in subsection 248(1) of the Income Tax Act as a systematic investigation or search carried out in a field of science or technology by means of experiment or analysis. The definition expressly includes basic research, applied research, and experimental development undertaken for the purpose of achieving technological advancement to create new, or improve existing, materials, devices, products or processes. It also reaches certain supporting work — such as engineering, design, operations research, mathematical analysis, computer programming, data collection and testing — but only where that work is commensurate with and directly supports the eligible research or development.

Just as importantly, the definition lists what is not SR&ED, including market research and sales promotion, quality control or routine testing, research in the social sciences or humanities, prospecting and exploring for minerals, commercial production of a new or improved product, style changes, and routine data collection. Much of the eligibility dispute in practice is about whether work the business sees as innovative falls inside the included activities or is caught by one of these exclusions.

The financial side of the program rests on two further pillars. Section 37 lets a taxpayer carrying on business in Canada deduct qualifying SR&ED expenditures in computing income, pooling current and certain other expenditures so that they can be deducted in the year incurred or carried forward indefinitely for deduction in a later year. Section 127 then provides the SR&ED investment tax credit on the qualified expenditures, which reduces tax otherwise payable. For many Canadian-controlled private corporations, an enhanced credit rate applies up to an annual expenditure limit, and a portion of the credit is refundable — meaning it can be paid out in cash even where there is little or no tax to offset — through the refundable investment tax credit rules. Because the deduction and the credit are calculated on the same underlying expenditures, a single adjustment on review can affect both at once.

The eligibility test the CRA applies

Whether a project is SR&ED is the threshold question, and the CRA applies a test drawn from the statutory definition and the case law interpreting it. In practical terms, the analysis asks three things, all of which generally must be present:

• Technological or scientific uncertainty. Was there an uncertainty that could not be resolved by standard practice or routine engineering — that is, a point at which a competent professional in the field could not know in advance whether a given result could be achieved, or how to achieve it, based on existing knowledge?
• Systematic investigation. Did the work proceed by a systematic investigation or search carried out by means of experiment or analysis — formulating a hypothesis aimed at the uncertainty, testing it through experimentation or analysis, and drawing conclusions — rather than by trial and error or simply applying known techniques?
• Technological or scientific advancement. Was the work undertaken for the purpose of achieving an advancement in the underlying science or technology, generating knowledge that advances the understanding of the field, even if the specific project ultimately failed to reach its commercial goal?

Two points about this test cause a great deal of friction. First, eligibility is judged at the level of the technology, not the product or the market. A genuinely new and commercially valuable product can still be denied if the CRA concludes it was built using established techniques without resolving any underlying technological uncertainty. Second, failure is not disqualifying. A project that did not work can still be eligible SR&ED if it was a systematic attempt to resolve a real uncertainty and advance the technology; conversely, a project that succeeded may be denied if the CRA sees no advancement beyond routine practice. Misunderstanding these points is a common reason businesses and the CRA end up far apart.

The CRA's technical (eligibility) review

SR&ED claims are filed on the prescribed form, Form T661, together with the corporate or personal return, and the project descriptions on that form are the starting point for any review. When the CRA selects a claim for a technical review, a research and technology adviser examines whether each claimed project meets the eligibility test above. This is a science-and-engineering exercise as much as a tax one: the adviser may request a detailed description of the technological uncertainties and the work done to resolve them, interview the technical staff, tour the facility, and ask for the underlying records that show what was actually done and when.

The technical review is where eligibility is won or lost. Technical staff often understand the engineering perfectly but are not used to describing their work in the specific language of the SR&ED definition — uncertainty, hypothesis, systematic investigation, advancement — and a genuinely eligible project can be denied simply because it was explained in commercial terms. Framing the technical narrative accurately against the statutory test, supported by records generated while the work was happening, is central to defending a claim at this stage. Our broader approach to dealing with CRA reviews is described under audit representation.

The CRA's financial review

Eligibility is only half of the picture. A separate financial review examines whether the expenditures claimed are SR&ED expenditures within section 37 and qualified expenditures within section 127, whether they were properly calculated, and whether they are supported. Even where the CRA accepts that a project is eligible, it can reduce the claim substantially on financial grounds. Recurring areas of dispute include:

• Salaries and wages. The portion of an employee's time spent directly on SR&ED must be reasonable and supported. Claims for time that cannot be tied to eligible work — or for individuals whose role was managerial or commercial rather than technical — are frequently reduced.
• The proxy versus traditional method for overhead. A claimant may use a prescribed proxy amount in lieu of detailed overhead, or the traditional method of identifying actual overhead, and the choice and its application are often reviewed.
• Contractor and third-party payments. Amounts paid to perform SR&ED on the claimant's behalf are subject to specific rules, and the CRA examines whether the work was truly SR&ED, who was entitled to the resulting credit, and whether the parties dealt at arm's length.
• Materials. The cost of materials consumed or transformed in the SR&ED process is claimable within limits, and claims for materials that ended up in saleable product, or that were not consumed in the experimental work, are commonly adjusted.

The financial review is largely an evidentiary exercise. Where the time records, payroll data, contracts and ledgers line up with the claim, the expenditures generally stand; where they do not, the CRA reduces the claim to what it can verify. This is why the financial and technical sides cannot be prepared in isolation — the dollars have to map onto the eligible work.

Common reasons SR&ED claims are denied or reduced

Across both reviews, a familiar set of issues drives most reductions and denials. Understanding them in advance is the strongest protection:

• No identifiable technological uncertainty. The CRA concludes the work used known techniques and routine engineering and did not face an uncertainty requiring systematic investigation.
• Routine development. The project is characterized as standard product development, debugging, customization or adaptation rather than work that advances the underlying technology.
• Eligibility judged at the wrong level. The claim is framed around a commercial objective or a new product rather than the technological problem that had to be solved.
• Weak or absent contemporaneous documentation. The technical narrative is reconstructed after the fact, with little evidence generated while the work was being done, leaving the CRA unable to verify what was actually attempted.
• Excluded activities. Part of the work falls within the express exclusions in subsection 248(1), such as quality control, routine testing, market research or commercial production.
• Unsupported or overstated expenditures. Salary allocations, overhead, materials or contractor costs cannot be tied to eligible work, an issue that overlaps with our work on overstated expenses.
• Late filing. The claim, or an amendment to it, was not filed within the SR&ED reporting deadline, with the result that the credit is lost regardless of the merits.

Several of these are not really about whether the work was innovative — they are about how the claim was framed and documented. That is also why many reductions can be challenged: the underlying work may be fully eligible even though the original filing did not make the case.

The filing deadline and why it is unforgiving

SR&ED has a filing rule that catches businesses off guard, and it is worth stating plainly. To claim the deduction and credit, the prescribed information must be filed by the SR&ED reporting deadline, which is generally 12 months after the filing-due date of the income tax return for the year in which the expenditures were incurred. The Act conditions the deduction and the investment tax credit on meeting this deadline, and the CRA treats it as a strict statutory bar rather than an administrative preference.

The practical consequence is severe: a claim filed even one day late, or a project added to an existing claim after the deadline, is generally lost no matter how strong the underlying SR&ED is. This is different from the objection and appeal deadlines, which can sometimes be extended; the reporting deadline largely cannot. The time to get a claim right is therefore before it is filed, and disputes are better anticipated than discovered after the window has closed.

The central role of contemporaneous documentation

If there is a single theme that runs through every successful SR&ED defence, it is contemporaneous documentation — records created while the work is being done, rather than reconstructed afterward to support a claim. The CRA places considerable weight on this kind of evidence because it is the most reliable way to show what uncertainty existed, what hypotheses were formed, what experiments were run, and what was learned, as it actually happened.

Useful contemporaneous evidence is whatever a business naturally generates in the course of genuine experimentation: project planning and design records, records of the hypotheses and the questions being tested, test protocols and results, records of failed attempts and the analysis of why they failed, design iterations and version histories, lab notebooks, progress reports, and time records that tie staff to specific eligible work. None of this needs to be created solely for the CRA; the point is that it exists, was made at the time, and corroborates the technical narrative and the expenditures. A claim built on strong contemporaneous records is far easier to defend than one resting on after-the-fact recollection, and the absence of such records is a common reason claims are reduced. Building this evidentiary foundation is something we work through with businesses as part of broader business advisory services.

Objecting and appealing an SR&ED determination

When a technical or financial review results in a reduced or denied claim, the CRA issues a (re)assessment reflecting its position. If you disagree, the formal dispute path is the same one that applies to other income tax matters. The first step is to file a Notice of Objection under section 165 of the Income Tax Act, generally within 90 days of the date the notice of (re)assessment was sent. A valid objection sends the file to the CRA's appeals area, where an appeals officer — independent of the auditor and the technical adviser — reviews the eligibility and expenditure decisions afresh.

If the objection does not resolve the dispute, the next step is an appeal to the Tax Court of Canada under section 169, generally within 90 days after the CRA confirms or reassesses, or once 90 days have passed since the objection was filed without a decision. SR&ED appeals can turn on genuinely technical questions, and the Tax Court is accustomed to hearing evidence about whether work met the SR&ED definition. The framing built at the objection stage — every project, every ground, supported by the contemporaneous record — shapes what can be argued later, which is why the objection should be treated as the foundation of the dispute rather than a formality. Our work at these stages is described further under tax disputes and objections and, where a matter proceeds to litigation, Tax Court of Canada appeals. Where the only realistic remaining question is the CRA's exercise of a discretion rather than the correctness of an assessment, a different route may apply, which we address under federal court judicial review.

How Barrett Tax Law approaches this

Our tax lawyers begin an SR&ED matter by separating the two questions the CRA keeps separate: eligibility and expenditure. We review the project descriptions on the T661 against the definition in subsection 248(1), identify where the CRA says the uncertainty, systematic investigation or advancement is missing, and work with the technical staff who did the work to express it accurately in the language the statute and the case law use. On the financial side, we test whether the salaries, overhead, materials and contractor costs the CRA disallowed map onto eligible work, and we assemble the contemporaneous records that support the claim. Where a reduction does not hold up, we preserve rights through a timely Notice of Objection under section 165 and, if necessary, an appeal to the Tax Court of Canada under section 169.

Every SR&ED claim turns on its own science, its own records and its own facts, so nothing on this page is a substitute for advice on your situation. If you have received an SR&ED review letter, a proposal to reduce or deny your claim, or a notice of reassessment, you are welcome to reach out for a free, confidential consultation to discuss your claim and the options available to you.