🔬 SR&ED helps Canadian businesses recover part of the cost of eligible research and development work.
💰 Eligible businesses can claim federal tax credits of 15% to 35% on qualifying expenses.
📋 Your work generally needs to involve technological uncertainty, systematic experimentation, and a technological advancement.
💻 Eligible work can include software development, engineering, manufacturing improvements, and experimental research.
📝 Good documentation is critical — tracking your experiments, time, costs, and technical decisions can make or break a claim.

Does your business do any kind of research? Are you trying new things with technology or attempting to solve technical problems where there’s no previously laid-out solution? If yes, here’s some good news for you:
The Canadian government will pay you back for a significant portion of that work!
That’s the principle behind the SR&ED tax credit. It might sound complicated, but the goal of the program is very straightforward: To make Canadian businesses create new things and innovate at a greater level. The SR&ED tax credit program supports Canadian businesses by sharing in the cost of their innovation.
This guide will cover everything that you need to know about SR&ED tax credits: what the program is, whether your business qualifies, how to make a claim, and how to avoid making any errors that can lead to a rejection.
SR&ED is an acronym for Scientific Research and Experimental Development. It’s the largest tax incentive program in Canada and is administered by the Canada Revenue Agency (CRA).
It is a long-running program which dates back to the 1980s, with the sole purpose of helping Canadian businesses grow through innovation. Billions of dollars are paid annually by the CRA to companies throughout Canada.
It’s noteworthy that the SR&ED tax credit program does not work like a grant or business loan where funding is provided upfront. Instead, you must first undertake your R&D activities, tracking expenses all the while, before submitting a credit claim when you file your corporate taxes.
The SR&ED tax credit program is layered into two sections:
Although it seems like another tax break, the SR&ED tax credit program is more than that. It’s a supportive program designed to be a robust tool to incentivize risk-taking by companies trying to innovate in their industries.
Whether you are a start-up experimenting with various software development ideas, or a manufacturer striving to refine production techniques, the SR&ED tax credit helps offset the financial risk inherent in this type of work. Failing to claim it when you are doing R&D means you’re leaving money on the table!
The following are ways in which the SR&ED tax credits work:
One common form of the SR&ED tax credit is through the Investment Tax Credit (ITC), a credit used to reduce federal corporate tax liabilities. As an example, for every $100,000 of eligible expenses you incurred in R&D, a credit between $15,000 and $35,000, depending on business status, is provided which can be used to offset your tax liability or, sometimes, as a cash refund.
This is a crucial aspect of the SR&ED program. Understanding the difference will help in understanding what you could receive:
Refundable credits mean you will receive a cash refund if the credit exceeds your tax payable. This is particularly beneficial for start-ups and small businesses who do not owe large sums in taxes.
Non-refundable credits can only be used to offset your taxes owing to zero. Any excess amount cannot be refunded but may be carried back or carried forward to reduce tax payable in other years. The type of credit you are entitled to generally depends on the structure of your business.
The federal SR&ED tax credit rates range between 15% and 35% of the eligible expenses.
Canadian-Controlled Private Corporations (CCPCs) are entitled to up to 35% on the first $3 million of eligible expenditures; beyond this threshold, the rate drops to 15%. Other corporations, individuals and partnerships are eligible for a flat 15% on all expenses.
It’s important to note that not all R&D qualifies for the SR&ED tax credit. You must meet precise criteria specified by the CRA to claim the credit. We outlined them below:
Your work must aim to generate a “technological advancement,” defined as contributing to progress in scientific or technological knowledge beyond the current level of established knowledge. If a technical problem can be easily solved through available resources like textbooks, manuals or Internet searches, the project is not likely to qualify.
However, genuinely uncertain projects where the solution is yet to be discovered through experimentation will fall within the scope of the SR&ED eligibility requirements.
To claim the SR&ED tax credit, your activities must be structured as a “systematic investigation or search” in which you:
It is not necessary to have a formal lab or a doctorate to be eligible. However, you must demonstrate that your investigation was methodical and not simply an ad-hoc process.
It’ll be great for you to know the specific activities that qualify for the SR&ED tax credit program, and those that do not.
Qualified Activities:
Activities That Don’t Qualify:
You may be one of those that think, “My work will only qualify if it’s successful.” This isn’t true, because failed experiments may be eligible if you were really attempting to advance technology.
Another one is “I’m too small for SR&ED.” This also isn’t true, as sole proprietors and small businesses can claim SR&ED tax credits. CCPCs typically get the most favorable credit rate.
Lastly, many people also say, “My work isn’t ‘scientific’ enough.” Interestingly, SR&ED applies to many industries besides core science, such as engineering, software development, and manufacturing. As long as you face genuine technical uncertainty and use experimentation to overcome it, you may fall within the SR&ED eligibility requirements.
The CRA recognizes three main categories of SR&ED work:
| SR&ED Work Type | What It Covers | Example |
|---|---|---|
| Experimental Development | Developing or improving products, materials, devices, or processes to overcome technical uncertainty. | Building a prototype or testing a new manufacturing process. |
| Applied Research | Research aimed at solving a specific practical or technical problem. | Investigating a new method before developing a commercial product. |
| Support Work | Activities that directly support eligible SR&ED projects. | Engineering, programming, testing, data collection, or mathematical analysis. |
| Software Development | Qualifies only if it involves resolving genuine technological uncertainty. | Creating a new algorithm or solving a previously unsolved performance challenge. |
This is the most common type of SR&ED claim. Experimental development involves the development or improvement of materials, devices, products or processes through systematic work based on science or technology.
By experimental development,we mean you create a prototype of a product, try out a new manufacturing process, or develop a new application that has technical uncertainties to be resolved.
Applied research is the type of research with a particular practical objective in mind, but aiming to solve an unresolved problem. Or, it can be called “the planning phase” which comes before the actual realization of the idea.
This one trips people up. Certain support activities also qualify for SR&ED – but only when they directly support your experimental development or applied research. Eligible support work includes:
The important word here is “directly”. The work that doesn’t directly relate to any real SR&ED project cannot be claimed on its own.
Software is one of the most frequently claimed SR&ED areas – and one of the most difficult to understand. Standard software development, such as creating an application, creating a database, integrating APIs, does not qualify by itself.
However, if developing the software involves solving a technical problem that has never been resolved (for example, attaining a performance or functionality level that no one has achieved before), then the work involved in solving that technical problem may well qualify.
Once you’ve verified your work is eligible, the real question now is: what can you claim for? Here are some of them.
For most businesses, this is the biggest category. You can claim the portion of employee salaries that relates to SR&ED work. This includes:
You’ll require a method to track the amount of time each of your employees spent working on SR&ED. This is best done through timesheets or project tracking forms.
Suppose your SAS contractor, through a GC approach, did SR&ED work for you. 80% of what he charges you is eligible (not 100%, because the CRA assumes that some charges may not be directly related to the SR&ED work).
There are some special regulations about contractors, especially when the business and work happens in Canada. It’s a benefit to have an SR&ED consultant work with you to go through those regulations in detail.
Can you claim for raw materials, components or other supplies used in experimental procedures? If you have assembled prototypes, undertaken experiments that consumed materials or destroyed test specimens, then these costs can be claimed.
Note: if in the end the material continues to have value (say, it became part of a product you sold) you may need to modify your claim.
There are two ways to handle overhead costs:
The traditional method: This lets you claim an amount of the overheads (utilities, rent etc.) that relates to SR&ED work. This Method requires extra tracking and documentation.
The proxy method: This method takes 55% of your SR&ED labor costs to proxy all your indirect expenses (overhead). This is a straightforward formula and is the most common practice.
You will find that most of these small businesses use the proxy method since it does not place much emphasis on documentation.
When filling out an SR&ED claim, it isn’t just about the dollars. It’s about being able to describe your work in a way that a CRA officer can assess.
Here’s a Step-by-Step SR&ED claim process you can follow:
Step 1: Identify your SR&ED projects
Review your work for the year and find potential SR&ED projects, no matter how insignificant you think it was. Find a way to prove it qualifies for SR&ED. Why? The requirements are actually much more wide-ranging than most think.
Step 2: Track your time and costs
Keep a record of the amount of time your staff spends working on SR&ED projects and also any related costs. The sooner you begin to record this information, the easier your claim process will be.
Step 3: Write the technical narratives
For each project, you’ll need to describe:
This is the most crucial but underestimated part of the claim. A robust technical narrative significantly mitigates the risk of audit or rejection.
Step 4: Determine the dollar value of your eligible costs
Outline the amounts for all categories of expenses you’re eligible for.
Step 5: Fill out the CRA forms
SR&ED is claimed using the Form T661 (the SR&ED claim) and filed with your company’s T2 (tax return). You must also file your Schedule T2SCH31 in order to calculate your ITC.
Step 6: File with your corporate tax return.
The time frame for filing your SR&ED claim is 12 months from the deadline for your corporate tax return. Once this date expires, you cannot claim the SR&ED credit anymore.
The CRA doesn’t say specifically what records you need to keep, but they will ask for evidence during a review. Good documentation ideally includes:
The golden rule: Set up a method to record in the moment, not afterwards. If you delay until you need to file before you piece together your archives, they’ll be weaker and harder to defend.
If your company qualifies as a CCPC i.e a private company with Canadian resident owners, you are in luck with the SR&ED program.
You get the 35% credit rate on your first $3 million of eligible expenditures every year. And those credits are fully refundable, meaning you can receive a cash refund even when you don’t have corporate tax to pay.
For a startup that’s burning a lot on R&D spending without much taxable income yet, this is a lifeline.
The $3 million expenditure threshold (which entitles them to the 35% rate) phase out on CCPCs with taxable capital exceeding $10 million, and disappear altogether above $50 million. The intention here is to provide the most benefit to smaller, growing companies.
This is the fundamental reason for the rejection or reduction of SR&ED claims. If your work is not laid out transparently, it leaves the CRA with insufficient evidence to verify the work has been undertaken or that it is the proper sort of work.
You don’t want to give them fuzzy descriptions, lost timesheets, or unverifiable expense allocations. These are all red flags.
Claiming routine work such as standard software updates, normal product testing, or business-as-usual is a mistake most fall into. These are always very familiar to the CRA technical reviewers, as they get it from hundreds of people.
Avoid claiming any work that had no real technological uncertainty and systematic approach. Over-claiming can result in both rejection and audits of future claims.
Keep in mind that a claim is only as good as its technical narrative. If your project descriptions are not clear or detailed enough, or if they don’t illustrate how your project was completely uncertain and experimental, the CRA reviewer could deny your claim even though it might qualify technically.
Take some time to give clear, specific, and honest descriptions of each project.
The CRA has to be presented with clear evidence that your work was more than haphazard attempts. This means it was a systematic process of hypothesis, experiment, observation, and conclusion, as it’s done in standard scientific research.
So implying “we tried different things and it eventually worked” isn’t a systematic investigation, even if all the work that went into it was legitimate R&D. Make sure you have trained your technical team members to record all decisions, the failed approaches, and the learnings from each experiment.
A SaaS startup developing a machine learning model that predicts when an equipment is likely to fail (This is pretty traditional in predictive maintenance.) However they face a core technical challenge, such that all the ways they try to approach their industry are getting terrible results, even with standard algorithms.
They try 6 months of testing new model architectures, training strategies, and data cleaning methods. In this case, you have the:
These all pass for a claim. The wages of the engineers, as well as other related infrastructure, are also claimable.
An average sized manufacturer aims to cut down the number of defective castings in a precision casting operation. However, they are unsure if the cause is related to temperature regulation, the mixture of the alloy, or the design of the mould. To find the solution, they perform a series of systematic experiments varying each factor.
This kind of experimentation process is SR&ED tax credit eligible. The materials that were used for testing, the engineer/technician time, and the overhead will all be part of your claim.
An engineering company creates a new structural connection system for modular building construction. They are unsure if the design will perform to seismic standards and so they run systematic trials varying each factor.
Design work such as this, including the prototype construction and testing qualify, provided they can also prove they were genuinely uncertain as to how to work it out.
The SR&ED tax credit program remains one of the most powerful instruments available for Canadian companies leading the charge into new and exciting areas of their field. Innovation such as developing a piece of code, creating new materials for use in a product, or designing an improved manufacturing process qualify for the tax credit. This is especially true if your work involves serious experimentation and uncertainty.
The key things to take away from this guide:
Most people are unaware about how many companies actually qualify for SR&ED. Most corporations that qualify for the SR&ED tax credit never even think to claim it because they believed their project was “not scientific enough” or that their company was “not big enough”.
Documentation is everything. The number one reason that claims are disallowed or reduced isn’t that the work didn’t warrant; rather, it’s mostly because the business couldn’t substantiate their innovative process. Build proof into your R&D routine early.
The earlier you begin the stronger your claim. When it comes time to prepare your SR&ED claim, having to rebuild records is painful and makes for less convincing SR&ED claims. Make sure to record time, experiments, and keep track of everything!
Seek professional assistance for sophisticated claims. SR&ED is a niche and technical practice. Therefore, a qualified SR&ED consultant or tax professional will easily pick out work with qualification potential you’ve not considered. They’ll also assist you to write better technical narratives.
If you’re doing work that pushes technical boundaries, Canada’s SR&ED tax credit program is designed to help you do more of it. Start exploring whether your work qualifies — the return can be substantial.
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SR&ED is the abbreviation of Scientific Research and Experimental Development. It’s Canada’s R&D tax incentive program, which is run by the Tax Office of Canada’s Revenue Agency.
Once a business has met the criteria for the SR&ED tax credit, and has made the necessary application, the business will receive tax credit(s) as part of the Investment Tax Credit (ITC), and use these to lower federal income taxes your business owes. Depending on your business type in the case where the credit amount is larger than the business income tax burden, the credit can be cashed back to businesses as a refund.
Any work that involves an attempt to overcome a technological uncertainty or challenge, using a systematic investigation or experiment for the purpose of gaining scientific or technological knowledge. This covers experiments, applied research, or any part of the work supported by the project such as trial, engineering or software.
Salaries and wages for employees working on SR&ED, Contractor costs (80% of eligible amounts), materials used during experimental development, and overhead costs (often calculated through 55% proxy method).
For a straightforward SR&ED claim process, the CRA strives to process it within 60-120 days from the date it was filed. More complex SR&ED claims that the CRA selected for review or audit can be processed after a much longer period - sometimes more than a year.
Your CRA reviewer (financial or technical) will review your claim. The reviewer may request more documentation, do interviews with your technical staff, and review your project narratives. Decisions may include full acceptance to partial reduction. You may challenge any decisions you disagree with.
Absolutely. Startups that qualify as CCPCs are eligible for the premium credit rate of 35% and recieve fully refunded credits. This means they can get their cash back even without a tax liability. This makes SR&ED especially valuable for early-stage tech companies investing significantly in R&D.
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