By OptiVal Editorial Desk
SR&ED and IRAP: How to Combine Canada’s Two Biggest R&D Programs
Most Canadian companies doing real research and development treat SR&ED and IRAP as two separate errands. The SR&ED tax credit is the accountant’s job, filed months after the year ends. The IRAP grant is the founder’s job, chased while the work is still happening. That split costs money. Run the two together, in the right order, and they cover different parts of the same project. Run them blindly and one quietly shrinks the other.
Here is how SR&ED and IRAP actually interact, where two smaller programs fit into the picture, and the three mistakes that cost innovating companies real money every year.
What SR&ED and IRAP each do
SR&ED is a tax credit. For Canadian-controlled private corporations it is a 35% refundable investment tax credit on the first $6 million of qualifying R&D spending (for tax years starting after December 15, 2024). It is always on, there is no intake window, and you claim it on your corporate tax return with Form T661. The money arrives after the fact, when the return is assessed.
IRAP is a grant, technically a non-repayable contribution from the National Research Council. It typically covers up to 80% of eligible salary costs and up to 50% of subcontractor costs for the project. First-time awards usually land between $75,000 and $200,000, with large multi-year projects going as high as $10 million. There is no intake deadline either, but the application starts with a conversation: you call 1-877-994-4727 and get assigned an Industrial Technology Advisor who assesses the project. IRAP pays during the project on a reimbursement basis, which means you need the cash to carry costs between claims. Our IRAP guide walks through eligibility in detail, and the official NRC IRAP program page is the primary source.
Put together, the logic is simple. IRAP funds the work while it is happening. SR&ED refunds part of whatever is left over afterwards. The trap is assuming the two add up the way their headline rates suggest.
The stacking rule that decides your real number
Here is the rule most companies discover too late. Any government assistance you receive for the R&D, including IRAP contributions, reduces the expenditure pool that your SR&ED credit is calculated on. It is right there in the Income Tax Act (subsection 127(18)) and on the T661 itself. The 35% credit applies only to what IRAP did not already cover.
Take a company spending $200,000 on eligible developer salaries. IRAP covers up to 80% of salary costs, so in theory $160,000. The SR&ED base is then $40,000, and 35% of that is $14,000. Combined support: $174,000 on $200,000 of spending.
Except there is a second rule. Total government assistance on the project is generally capped at about 75% of eligible costs. Your Industrial Technology Advisor knows the SR&ED credit is coming and sizes the IRAP contribution with it in mind. In practice, most companies end up with combined support of roughly 70 to 75 cents on each eligible R&D dollar, not 80 plus 35.
That is still an excellent result. The point is to know the real number before you promise one to your board or your bank. Eighty percent plus thirty-five percent is not the math, and finding that out during a CRA review is the expensive way to learn it. Our complete SR&ED guide covers the claim mechanics, and the stacking guide goes deeper on the double-dipping rules across programs.
Where the rest of the stack fits
SR&ED and IRAP are the two big pieces, but they are not the whole picture.
NGen’s Industrial AI Readiness Program reimburses up to $15,000 of professional fees for an AI readiness feasibility study, aimed at manufacturers that would qualify for IRAP. For a company that has never claimed anything, it is a low-risk way to start building the R&D paper trail that bigger applications need.
If the project involves buying equipment, the Clean Technology Manufacturing ITC offers a 30% refundable credit on eligible new machinery and equipment. Equipment purchased for the R&D effort can qualify separately from the salary-based programs; our CTM ITC guide has the details.
And in Ontario, the provincial layer adds the Ontario Innovation Tax Credit (8% refundable) and the Ontario Research and Development Tax Credit (3.5% non-refundable) on top of the federal SR&ED credit, each calculated after the one before it.
The practical sequence for a first-timer: get the AI readiness study or a small IRAP conversation going while the work is planned, keep clean project time tracking from day one, buy qualifying equipment with the ITCs in mind, and let your accountant build the T661 on the reduced base at year-end. Our funding eligibility calculator can help you see which of these your company actually fits, and the Learn hub has plain-English guides on each program.
Three mistakes that cost innovators real money
1. Claiming the same wages under two programs. IRAP wages and wage-subsidy wages (Canada Summer Jobs, the Student Work Placement Program) cannot be the same wages. Pick which program funds which employee and document it. Overlap is the fastest way to turn a grant into a repayment demand.
2. Calling IRAP after the money is spent. IRAP funds planned work, not receipts. If the project is already finished, IRAP cannot help you. SR&ED is the one that works backwards: you can claim work already done, as long as the records exist. Know which direction each program faces.
3. Not telling your accountant about the IRAP money. The T661 has specific lines for government assistance. If the IRAP contribution never makes it onto the form, the SR&ED credit is overstated, and CRA will reassess it with interest. Your bookkeeper and your grant advisor need to be working from the same numbers. This is exactly the kind of coordination our team handles for clients, because the paperwork is where these claims live or die.
Not sure which programs you qualify for? We help small businesses find funding and prepare applications. Our consulting rate is $125/hr (CAD, HST extra), and the first conversation costs nothing. Book a free consultation.
