SR&ED Tax Credit in Canada: A Practical Guide

The Scientific Research and Experimental Development (SR&ED) program is the largest single source of federal support for research and development in Canada. It works through the tax system: a qualifying company earns an investment tax credit (ITC) on its eligible R&D spending. The basic ITC is 15% and non-refundable, but most Canadian-controlled private corporations (CCPCs) qualify for an enhanced 35% refundable credit on qualified expenditures up to an expenditure limit. For tax years beginning after December 15, 2024, that limit was raised to $6,000,000 (up from $3,000,000). This guide explains who qualifies, how much you can claim, and the three tests that decide whether your work counts.

What SR&ED is and how the credit works

SR&ED is a federal investment tax credit delivered through the corporate (or personal) income tax return. Rather than a grant you apply for in advance, it is a claim you make after the fact for R&D work already carried out in the tax year. There are two rates:

• The basic 15% ITC applies to qualified SR&ED expenditures and is non-refundable — it reduces tax payable but is not paid out in cash if there is no tax to offset (though it can be carried forward or back).
• The enhanced 35% ITC is refundable and is available to most CCPCs on qualified expenditures up to the expenditure limit. Because it is refundable, an early-stage company with little or no taxable income can still receive a cash refund for its R&D.

That refundability is what makes SR&ED so valuable to owner-managed and pre-profit companies: the credit can become working capital rather than a future tax saving.

Source: canada.ca — SR&ED investment tax credit

The expenditure limit: now $6 million

The enhanced 35% rate is not unlimited. It applies to qualified SR&ED expenditures only up to the expenditure limit. For tax years beginning after December 15, 2024, that limit is $6,000,000, increased from the previous $3,000,000.

The enhanced limit is phased out based on the prior year's taxable capital employed in Canada: it begins to reduce once taxable capital exceeds $15 million and is fully eliminated at $75 million. A corporation above that range still earns the basic 15% credit, but loses access to the enhanced refundable rate. Because the phase-out is measured on the prior-year figure, large balance-sheet changes need to be planned with the limit in mind.

Source: canada.ca — SR&ED investment tax credit

The three eligibility tests

Not every project with a technical flavour qualifies. Eligible work must be carried out in Canada and must satisfy all three of the following tests:

1. Scientific or technological uncertainty — at the outset, it was not known whether the result could be achieved, or how, based on the standard practice and knowledge available.
2. Systematic investigation — the work proceeded through a systematic search or investigation carried out by experiment or analysis (a hypothesis, testing, and a conclusion), not trial-and-error guesswork.
3. Scientific or technological advancement — the work sought to advance the underlying science or technology, even if the specific project ultimately failed.

Routine engineering, style changes, market research, quality control, and commercial production do not meet these tests on their own. Strong SR&ED claims rest on contemporaneous documentation — project records, test results and time tracking — that shows the uncertainty and the systematic work as they happened.

Source: canada.ca — SR&ED eligibility of work

What expenditures can be claimed

Qualified SR&ED expenditures generally include the salaries and wages of staff directly engaged in the work, the cost of materials consumed or transformed, and eligible contract and third-party payments for SR&ED performed on the company's behalf. The mechanics of the proxy versus traditional overhead methods, and which contract payments qualify, are technical and worth confirming before the claim is built, because the choice affects the size of the pool the credit is calculated on.

How SR&ED and Alberta's provincial credit fit together

SR&ED is the federal layer. In Alberta, the provincial Innovation Employment Grant (IEG) is built on top of the same eligible expenditures and can be claimed alongside the federal credit, stacking provincial support on the federal ITC. We cover the IEG and other provincial supports in our Alberta business grants and R&D incentives guide, and the broader Alberta corporate filing in the Alberta corporate tax guide.

How RN Canada helps

RN Canada helps Alberta and BC companies decide whether their work qualifies for SR&ED, scope the eligible expenditure pool, and prepare a defensible claim with the documentation the CRA expects. We model the interaction between the federal 35% refundable credit and Alberta's Innovation Employment Grant so the two are coordinated rather than claimed in isolation, and we track the expenditure limit and taxable-capital phase-out so the enhanced rate is preserved where possible. Our bookkeeping and tax filing and budgeting and financial reporting services keep the underlying records claim-ready throughout the year. To discuss an SR&ED claim, contact us.

This is general information, not personalized tax advice. Speak to us about your specific situation through our contact page.