What Is SR&ED? A Plain-English Explanation of the Program

SR&ED (Scientific Research and Experimental Development, pronounced "shred") is the Canada Revenue Agency program that pays businesses back part of what they spend on research and experimental development. This guide explains what the program is, what counts as SR&ED work and who qualifies. For the 2026 credit rates, the $6 million expenditure limit, filing deadlines and how to claim, see our SR&ED tax credit page.

SR&ED (Scientific Research and Experimental Development) is a Canadian federal tax incentive, administered by the Canada Revenue Agency, that refunds Canadian-controlled private corporations 35% of the first $6 million of eligible R&D spending each year (15% non-refundable for other corporations) — approximately $4.5 billion per year in total. The $6 million limit took effect December 16, 2024, and eligible Canadian public corporations can now access the enhanced rate.

SR&ED at a glance (verified October 2026)

SR&ED stands for Scientific Research and Experimental Development. It is the Canadian federal government's flagship program for encouraging private-sector research and development, and it is the single largest source of federal support for business R&D in Canada.

Administered by the Canada Revenue Agency (CRA), the SR&ED program provides over $4.5 billion annually in tax credits to thousands of Canadian businesses conducting eligible R&D activities. Despite its scale, a large number of eligible companies never file, either because they do not know the program exists, they assume their work does not qualify, or they find the claim process too daunting.

This guide explains everything: what SR&ED means, who qualifies, how the credits work at the federal and provincial level, what activities and expenses are eligible, how to file, and how to avoid the most common mistakes.

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The Origin and Purpose of SR&ED

The SR&ED program has been a feature of Canadian tax policy since 1986, when it replaced the earlier Scientific Research Tax Credit (SRTC). The government created it with a straightforward goal: to make Canada more competitive by reducing the effective cost of conducting R&D inside Canada.

The policy rationale is economic. Private companies tend to underinvest in R&D because the benefits of new knowledge often "spill over" to competitors and the broader economy. The SR&ED program corrects this by subsidizing a portion of R&D costs through the tax system, making it financially rational for companies to invest more in innovation than they otherwise would.

Over nearly four decades, the program has been refined through multiple federal budgets, CRA policy updates, and court decisions. The core structure, however, has remained consistent: businesses that conduct eligible R&D in Canada can claim a percentage of their qualifying expenditures as an investment tax credit (ITC).

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Who Qualifies for SR&ED?

SR&ED eligibility is broader than most people think. You do not need to be a biotech firm or operate a laboratory. The program is available to any business that performs eligible R&D work in Canada, regardless of size, industry, or stage of development.

Eligible Business Types

What "Canadian-Controlled Private Corporation" Means

CCPC status is critical because it unlocks the enhanced 35% refundable rate. For a full breakdown of CCPC requirements and how they affect your claim, see our guide to CCPC status in Canada. A corporation is a CCPC if:

• It is a private corporation (shares not listed on a designated stock exchange)
• It is incorporated in Canada
• It is not controlled, directly or indirectly, by one or more non-resident persons, public corporations, or any combination thereof

The CCPC designation is determined at the end of the tax year. If your corporate structure changes mid-year, for example, you receive venture capital from a U.S. investor who gains control, you may lose CCPC status for that entire fiscal year.

The $6-Million Expenditure Limit

The enhanced 35% rate applies to the first $6 million in qualifying SR&ED expenditures per year. This limit was increased from $3 million to $6 million for taxation years that begin on or after December 16, 2024 (Budget 2025). The $6 million limit is shared among associated corporations, so if your business has related companies also filing SR&ED, the $6M is divided among them.

The expenditure limit is reduced based on the corporation's prior-year taxable capital employed in Canada: it begins to phase out at $15 million and is fully eliminated at $75 million (both thresholds were raised from the former $10 million / $50 million). The older taxable-income-based phase-out (tied to $800,000 of prior-year taxable income) was repealed in 2019 and no longer applies.

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Federal SR&ED Tax Credit Rates

Here is a clear breakdown of the federal Investment Tax Credit (ITC) rates:

For CCPCs and Eligible Canadian Public Corporations (Enhanced Rate)

As of taxation years beginning on or after December 16, 2024, the enhanced 35% refundable rate is available to Canadian-controlled private corporations (CCPCs) and, for the first time, eligible Canadian public corporations (ECPCs) and their subsidiaries.

• 35% refundable ITC on the first $6 million of qualifying expenditures (subject to the taxable-capital phase-out described above)
• 15% non-refundable ITC on qualifying expenditures above $6 million
• Unused non-refundable credits can be carried back 3 years or carried forward 20 years

For All Other Claimants

• 15% non-refundable ITC on all qualifying expenditures
• Same carry-back and carry-forward rules apply

What "Refundable" Means in Practice

A refundable tax credit is paid out to you even if your company has no tax liability. This is enormously valuable for startups and pre-revenue companies. If you are a CCPC that spent $200,000 on eligible SR&ED in a year and owe zero corporate tax, the CRA will send you a cheque for $70,000 (35% of $200,000). No other program in Canada provides this kind of cash-back incentive for R&D.

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Provincial SR&ED Top-Up Credits

Most Canadian provinces offer their own SR&ED tax credits that stack on top of the federal credit. Provincial credits vary significantly in rate, refundability, and eligibility rules. Here is the current landscape:

Combined Federal + Provincial Rates

For a CCPC in Ontario claiming the enhanced federal rate:

• Federal: 35% (refundable)
• Ontario OITC: 3.5% (refundable)
• Combined: 38.5% of qualifying expenditures returned as cash

For a CCPC in Quebec with SME status:

• Federal: 35% (refundable)
• Quebec: up to 30% (refundable)
• Combined: up to 65%, effectively, for every dollar you spend on eligible R&D, you get 65 cents back from the government

For a CCPC in Manitoba:

• Federal: 35% (refundable)
• Manitoba: 15% (refundable)
• Combined: 50% of qualifying expenditures

These combined rates make Canada one of the most attractive jurisdictions in the world for conducting R&D, particularly for small and mid-sized private companies.

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What Activities Qualify for SR&ED?

This is where most confusion occurs. The CRA uses a specific three-criteria test to determine whether an activity constitutes SR&ED. All three must be present:

The Three Criteria

1. Technological uncertainty: There was a problem or question that could not be resolved through standard practice, existing knowledge, or readily available information. You did not know if or how a solution was achievable when you started.
2. Systematic investigation: You followed a methodical process: formulated hypotheses, designed experiments or prototypes, tested, analyzed results, and drew conclusions. Trial and error alone is not sufficient, you need to demonstrate a logical, documented approach.
3. Technological advancement: The work resulted in new knowledge or understanding that goes beyond what was previously known or available. The advancement does not have to be groundbreaking, incremental advances count, provided they move beyond established practice.

What the CRA is Really Looking For

The CRA is not asking whether your product is innovative or whether your business model is creative. They are asking a narrower question: did you encounter a technological problem that you could not solve using known methods, and did you carry out a systematic investigation to resolve it?

This distinction is critical. A company can develop a highly innovative product without any SR&ED-eligible work (if no technological uncertainty was involved), and a company can perform eligible SR&ED while working on a seemingly mundane product (if genuine technological challenges were encountered and systematically investigated).

Eligible Activity Examples by Industry

Software Development

• Developing a new algorithm to process natural language queries where existing NLP approaches produced unacceptable accuracy rates
• Building a real-time data pipeline where existing architectures could not meet latency requirements at the required throughput
• Creating a machine learning model where available training approaches did not generalize to the target domain
• Designing a distributed system where standard consensus protocols did not satisfy the application's specific fault-tolerance and performance requirements simultaneously
• Overcoming integration challenges between systems where documented APIs did not behave as specified and workarounds required novel technical approaches

Not eligible: Routine software development using established frameworks, building a CRUD application, customizing off-the-shelf software, porting an application to a new platform using documented migration tools.

For 25+ detailed project scenarios across every major industry, see our SR&ED eligible project examples.

Manufacturing and Engineering

• Developing a new manufacturing process to achieve tolerances that existing methods could not consistently deliver
• Experimenting with material compositions to achieve specific performance characteristics (heat resistance, strength-to-weight ratio) not achievable with known formulations
• Designing tooling or fixtures to solve production problems where standard approaches resulted in unacceptable defect rates
• Developing quality control methods to detect defects that existing inspection techniques could not reliably identify

Not eligible: Routine quality control, standard tooling design using established methods, implementing well-known manufacturing processes, routine production optimization without technological uncertainty.

Biotechnology and Life Sciences

• Developing novel assay methods to detect biomarkers where existing assays lacked sufficient sensitivity or specificity
• Engineering cell lines to express target proteins at commercially viable yields when established protocols did not achieve adequate expression levels
• Formulating drug delivery systems to overcome bioavailability challenges where known formulation approaches were insufficient
• Developing bioinformatics algorithms to analyze genomic data where existing computational methods produced unacceptable error rates

Construction and Civil Engineering

• Developing new concrete formulations to achieve performance requirements (strength, workability, durability) not attainable with standard mixes
• Designing structural systems for unusual loading conditions where established engineering methods did not provide adequate solutions
• Developing construction methods for challenging site conditions where standard approaches were technically infeasible
• Creating new building envelope systems to meet performance targets not achievable with available products and assemblies

Agriculture and Food Processing

• Developing new food preservation techniques to extend shelf life while maintaining nutritional and sensory properties where existing methods were inadequate
• Experimenting with crop varieties or growing methods to achieve yield or quality outcomes not attainable through known practices in the specific growing conditions
• Developing automated harvesting systems for crops where existing mechanical harvesting technology resulted in unacceptable damage rates

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Eligible SR&ED Expenditures

Once you have identified eligible activities, you need to quantify the expenditures associated with those activities. The CRA recognizes the following categories of qualifying expenditures:

Salaries and Wages

The largest component of most SR&ED claims. Eligible salary costs include:

• Direct R&D performers: Engineers, developers, scientists, technicians, and others who directly perform eligible SR&ED activities
• Direct support: Employees who directly support the R&D work (lab technicians preparing materials, QA staff testing R&D outputs)
• Supervisors: Time spent by managers directly supervising eligible SR&ED activities (not general management time)

Key rule: Only the portion of an employee's time spent on eligible SR&ED activities is claimable. If a developer spends 60% of their time on eligible SR&ED and 40% on routine development, only 60% of their salary qualifies.

Materials Consumed or Transformed

Materials that are consumed or transformed during the R&D process:

• Raw materials used in experiments that are destroyed or permanently altered
• Prototype materials that cannot be sold or repurposed
• Consumable supplies used exclusively in R&D (chemicals, test samples, specialized components)

Important: If materials are used in SR&ED but the resulting product is later sold or used in your business, their cost must be excluded or adjusted.

Contract Expenditures

Payments to arm's-length contractors (third parties) for eligible SR&ED work:

• Only 80% of the contract payment is eligible (the CRA applies a proxy reduction)
• The contractor must be performing eligible SR&ED activities, not routine work
• You must have documentation showing what work was performed

Overhead (Proxy Method vs. Traditional Method)

You have two options for claiming overhead:

1. Proxy method (used by the vast majority of claimants), You claim an additional 55% of eligible salary costs as a proxy for overhead. No tracking of actual overhead required.
2. Traditional method: You track and claim actual overhead costs (rent, utilities, depreciation of equipment used in R&D). This requires detailed record-keeping and is rarely worth the administrative burden unless your overhead ratio is significantly higher than 55%.

Most businesses should use the proxy method. It is simpler, less likely to trigger disputes during a CRA review, and provides a reasonable approximation for most R&D operations.

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The T661 Form: How SR&ED Claims Are Filed

All SR&ED claims are filed using CRA Form T661, the Scientific Research and Experimental Development (SR&ED) Expenditures Claim. The T661 is submitted with your corporate income tax return (T2). For a line-by-line walkthrough of every section, see our T661 form guide.

What the T661 Contains

The T661 is a multi-section form that captures:

1. Claimant information: Business name, BN, fiscal year, CCPC status
2. Project descriptions: For each SR&ED project, a technical narrative describing the work performed (this is the most important and most scrutinized part of the claim)
3. Expenditure details: Breakdown of qualifying expenditures by category (salaries, materials, contracts, overhead)
4. Schedule 31: Calculates the Investment Tax Credit (ITC) amount

Writing Technical Narratives (Lines 242 to 246)

The technical narrative is the heart of the T661. For each project, you must describe:

• Line 242: Scientific or technological objectives: What were you trying to achieve? What problem were you trying to solve?
• Line 244: Scientific or technological uncertainties: What did you not know? What obstacles could not be overcome using standard knowledge or practice?
• Line 246: Systematic investigation or search and work performed: What did you actually do? What hypotheses did you test? What experiments did you conduct? What were the results?

Common mistake: Writing the narrative as a product description or business case. The CRA does not care about your market opportunity or customer requirements. They want to understand the technological challenge and the systematic work you performed to address it.

The Filing Deadline

SR&ED claims must be filed within 18 months of the end of the fiscal year in which the work was performed. This is a hard deadline, the CRA has no discretion to accept late filings. For specific deadline calculations based on your fiscal year end, see our SR&ED claim deadline guide for 2026.

For example, if your fiscal year ends December 31, 2025, your SR&ED claim for that year must be filed by June 30, 2027.

Despite this generous window, many companies miss the deadline simply because they procrastinate or do not realize they are eligible until it is too late. If you are reading this and have not filed for your most recent completed fiscal year, check whether you are still within the 18-month window.

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SR&ED vs. IRAP vs. CanExport: Which Program Is Right for You?

Canadian businesses often confuse these three programs or assume they must choose one. In reality, they serve different purposes and can be used simultaneously.

Key Takeaway

• SR&ED is for R&D you have already done or are currently doing, it is a tax credit claimed after the fact
• IRAP is for R&D you are planning to do, apply before starting the project to receive direct funding
• CanExport is for expanding into international markets, completely different eligible expenses

A technology company could realistically use all three simultaneously: IRAP to fund a new R&D project, SR&ED to claim tax credits on R&D expenses not covered by IRAP, and CanExport to fund trade show attendance and market research in a target export market.

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How GrantOps Automates SR&ED

Filing an SR&ED claim the traditional way takes weeks of effort: tracking employee hours, identifying eligible projects, writing technical narratives, calculating expenditures, and assembling documentation for potential CRA review. Many companies outsource this to SR&ED consultants who charge 15% to 25% of the claim value, a significant cost that reduces the program's benefit.

GrantOps eliminates most of this work through AI automation.

How It Works

1. Connect your development tools: Link GitHub, GitLab, Jira, Linear, Confluence, Slack, or other platforms where your R&D work is documented. Setup takes under 15 minutes.
2. AI identifies eligible activities: GrantOps analyzes commit histories, pull requests, ticket descriptions, technical discussions, and project documentation to automatically identify work that meets the CRA's three-criteria test for SR&ED eligibility.
3. Automatic T661 generation: The platform generates CRA-compliant technical narratives for each eligible project, describing the technological uncertainty, systematic investigation, and technological advancement in the language the CRA expects.
4. Expenditure calculation: GrantOps calculates qualifying expenditures based on employee time allocation, contractor invoices, and material costs, using either the proxy or traditional overhead method.
5. Audit-ready documentation: Every claim element is linked back to source evidence (specific commits, tickets, documents), creating a comprehensive evidence package that withstands CRA review.

What This Means for Your Business

• 85% reduction in preparation time compared to manual SR&ED claim preparation
• Published pricing (free tier, $99 or $499 CAD/month) plus an 8% success fee, so you keep more of your credit than with a consultant contingency fee
• Year-round monitoring: GrantOps continuously identifies eligible activities as they happen, not just at year-end
• Higher claim accuracy: AI analysis catches eligible work that is commonly missed by manual review, while also flagging borderline activities that could trigger CRA scrutiny

Start free — connect GitHub and get a T661 draft in days, not months

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Common SR&ED Mistakes to Avoid

1. Claiming Routine Development as SR&ED

The most common reason for CRA claim reductions. Using a new-to-you technology is not the same as encountering technological uncertainty. If the solution was available in documentation, tutorials, or community forums, it is not SR&ED.

2. Poor Time Tracking

If you cannot demonstrate how much time employees spent on eligible activities versus routine work, the CRA will challenge your salary allocations. Even approximate time tracking (weekly time sheets, project management data) is far better than nothing.

3. Inadequate Technical Narratives

Narratives that read like marketing copy or project status reports will be rejected. The CRA wants technical specifics: what was uncertain, what you tried, what you learned. Use the language of the three-criteria test.

4. Missing the 18-Month Deadline

There are no extensions and no appeals. If you miss the 18-month deadline, the claim is permanently lost. Set a calendar reminder 12 months after your fiscal year end to ensure you have time.

5. Not Claiming Provincial Credits

Many businesses file the federal SR&ED claim but neglect the provincial top-up. In provinces like Quebec, Manitoba, and the Atlantic provinces, the provincial credit alone can be worth 14% to 30% of qualifying expenditures.

6. Excluding Eligible Activities

Companies often limit their SR&ED claims to the "obvious" R&D department while overlooking eligible work in manufacturing process development, quality engineering, DevOps automation, and other areas where genuine technological uncertainty was encountered.

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How Much Does SR&ED Claim Preparation Cost?

The cost of preparing an SR&ED claim depends on the method you choose. Traditional SR&ED consultants charge between 15% and 30% of the refund value on a contingency basis. For a $200,000 claim, that translates to $30,000 to $60,000 in fees. Some firms charge fixed fees ranging from $5,000 to $15,000 per project, which can be more economical for larger claims.

The main cost driver is documentation. Consultants spend most of their time interviewing technical staff, reconstructing what happened during the fiscal year, and writing CRA-compliant narratives for the T661 form. This process typically takes 4 to 8 weeks per claim.

AI-powered platforms have changed this equation. By connecting to development tools (GitHub, Jira, Slack) and capturing evidence continuously, automated SR&ED preparation can reduce preparation time by 85% at a fraction of traditional consultant fees. The documentation is stronger because it is contemporaneous, created from actual engineering activity rather than reconstructed from memory months later.

For companies filing their first claim, the math almost always favours filing. Even after consultant fees, a typical CCPC recovers 25% to 40% of qualifying R&D expenditures as cash. The cost of not filing is leaving that money unclaimed permanently.

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Frequently Asked Questions

What does SR&ED stand for?

SR&ED stands for Scientific Research and Experimental Development. It is often pronounced "shred" in the Canadian business community. The program is defined under Section 248(1) of the Income Tax Act and administered by the Canada Revenue Agency.

How much money can I get from SR&ED?

The amount depends on your qualifying expenditures and your corporation type. A CCPC spending $500,000 on eligible SR&ED would receive approximately $175,000 in federal refundable tax credits (35%), plus any applicable provincial credits. There is no cap on total SR&ED claims, but the enhanced 35% rate applies to the first $6 million in expenditures (above that, the rate drops to 15%).

Do software companies qualify for SR&ED?

Yes, and software companies are among the most common SR&ED claimants. Eligible software activities include developing new algorithms, building systems that push beyond known architectural limits, creating machine learning models for novel domains, and solving integration challenges that cannot be resolved using documented approaches. Routine coding, building standard web applications, and using established frameworks as intended are not eligible.

What is the difference between SR&ED and SRED?

There is no difference, they refer to the same program. "SR&ED" is the official abbreviation used by the CRA, while "SRED" is a common shorthand. Both are pronounced "shred."

Can startups claim SR&ED?

Absolutely. Pre-revenue startups that are CCPCs are among the best-positioned claimants because the 35% credit is fully refundable, meaning the CRA pays you cash even if you owe no tax. For a startup burning through capital on R&D, SR&ED can provide critical non-dilutive funding. Many Canadian tech startups rely on SR&ED refunds as a core part of their financial runway.

How long does a CRA SR&ED review take?

If your claim is selected for review (which happens to roughly 20% of claims), the review process typically takes 6 to 12 months. The CRA will assign a Research and Technology Advisor (RTA) to conduct a technical review and a Financial Reviewer to examine expenditures. Having well-organized documentation and clear technical narratives significantly speeds up the process. Our SR&ED audit preparation guide covers everything you need to know about handling a CRA review.

Can I claim SR&ED for work done by contractors?

Yes, but with limitations. You can claim 80% of payments made to arm's-length contractors for eligible SR&ED work they performed on your behalf. Non-arm's-length contractors (related parties) are subject to different rules, typically, only the contractor's actual SR&ED-eligible salary and material costs are claimable. In both cases, you must be able to demonstrate that the contractor performed eligible SR&ED activities, not routine work.

What happens during a CRA SR&ED audit?

A CRA SR&ED review typically involves two components: a technical review and a financial review. During the technical review, the CRA's Research and Technology Advisor will meet with your technical staff (the people who actually did the R&D work) to discuss the projects claimed. They will ask about the technological uncertainties, the approaches tried, and the outcomes. During the financial review, the CRA examines your expenditure calculations, time tracking, and contractor agreements. The best preparation is thorough contemporaneous documentation, records created during the R&D work, not reconstructed after the fact.

Is it worth hiring an SR&ED consultant?

It depends on your situation. Published contingency fees for SR&ED consultants run from about 10% to 30% of the credit (sources), which can be significant. For a $200,000 claim, that is $30,000 to $50,000 in fees. Consultants add value when you have never filed before and need guidance, or when your claim is large and complex. However, AI-powered tools like GrantOps now automate most of what consultants do, generating T661 narratives, calculating expenditures, and assembling documentation, at a fraction of the cost. Many companies now use AI tools for preparation and only engage a consultant for final review of very large or complex claims.

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Start Your SR&ED Claim Today

If your business conducts any form of R&D in Canada, whether you are writing software, developing new manufacturing processes, formulating new materials, or engineering novel systems, you are likely leaving money on the table by not claiming SR&ED.

The 18-month filing window means you may still be able to claim for your most recently completed fiscal year. Do not wait until the deadline is imminent.

Start free — connect GitHub and get a T661 draft in days, not months

GrantOps connects to your existing tools, identifies every eligible project and expenditure, and generates audit-ready T661 forms with technical narratives that satisfy CRA requirements. Published pricing plus an 8% success fee instead of consultant contingency fees. No weeks of manual preparation.

Sources

All rates, limits and deadlines in this guide were verified on October 14, 2026 against these primary sources:

• SR&ED tax incentives — Canada Revenue Agency
• What are SR&ED tax incentives — Canada Revenue Agency
• Guidelines on the eligibility of work for SR&ED tax incentives — Canada Revenue Agency
• Form T661, SR&ED Expenditures Claim — Canada Revenue Agency
• T4088 Guide to Form T661 — Canada Revenue Agency
• Income Tax Act, s. 248(1) and s. 37 — Justice Laws
• 2024 Fall Economic Statement, Chapter 2 — Department of Finance Canada

Sources

All rates, limits and deadlines in this guide were verified on October 14, 2026 against these primary sources:

• SR&ED tax incentives — Canada Revenue Agency
• What are SR&ED tax incentives — Canada Revenue Agency
• Guidelines on the eligibility of work for SR&ED tax incentives — Canada Revenue Agency
• Form T661, SR&ED Expenditures Claim — Canada Revenue Agency
• T4088 Guide to Form T661 — Canada Revenue Agency
• Income Tax Act, s. 248(1) and s. 37 — Justice Laws
• 2024 Fall Economic Statement, Chapter 2 — Department of Finance Canada

Learn more:

• SR&ED for Software Companies
• SR&ED in Ontario
• All Canadian Funding Programs
• Start free with GrantOps — no credit card