Filing SR&ED Without a Consultant

SR&ED and the 2026 numbers

SR&ED is a refundable tax credit, not a grant. The CRA administers it, you claim it on your corporate return, and for a CCPC it pays cash even when you owe no tax.

SR&ED pays Canadian-controlled private corporations a 35% refundable investment tax credit on the first $6 million of qualifying expenditures each year. You file it on Form T661 and Schedule T2 SCH 31, attached to your T2 corporate return. The credit is refundable, which means the CRA writes you a cheque if you have no tax owing. That is why it is the lifeblood of pre-revenue Canadian deep-tech and software companies. For a sense of the dollars in play, see the typical SR&ED refund for a small startup.

The three-part eligibility test

Work qualifies only when it satisfies three criteria at once, drawn from the legislative definition and CRA Information Circular IC86-4R3:

• Technological uncertainty. A specific technical obstacle existed that the publicly available knowledge of the field could not resolve. The uncertainty must be technological, not commercial or schedule-based.
• Systematic investigation. You ran a structured process of hypothesis, experiment, observation, and conclusion, rather than trial-and-error tinkering. A negative result still qualifies if you can document the hypothesis you tested.
• Technological advancement. The work attempted to push beyond the publicly available baseline of the field, meaning the knowledge accessible to a competent professional through publications, conferences, or open-source repositories.

The test is not difficulty. Stitching together known frameworks to ship a product is engineering, not SR&ED, no matter how long it took. Building a custom machine-learning approach because off-the-shelf models would not converge on your data almost certainly is. The question is whether the field's public knowledge could give you a clear path forward.

What Budget 2025 changed

Canada's 2025 federal budget delivered the largest SR&ED expansion in a generation, applying to tax years beginning on or after December 16, 2024. The headline change raised the enhanced-rate expenditure limit directly from $3 million to $6 million, doubling the maximum federal refundable credit at the 35% rate to $2.1 million per year. Three other changes followed: capital expenditures used primarily (more than half) for SR&ED are eligible for the credit again, the enhanced-rate gross-revenue phase-out widened from the old $10M to $50M band up to $15M to $75M, and certain Canadian public corporations gained partial access to the enhanced refundable rate for the first time.

Provincial credits stack on top

Five provinces run their own R&D tax credit alongside federal SR&ED, filed on the same eligible expenditures. Stacking is automatic, with no separate application beyond the provincial form.

An Ontario CCPC can recover close to 46% of eligible R&D spending once federal and provincial credits combine, and Quebec's higher small-company CRIC rate pushes the combined recovery toward 65%. Total government assistance across all stacked programs, including IRAP and provincial grants, generally cannot exceed 75% of eligible project costs, and any other government assistance received on the same costs reduces the SR&ED-eligible pool.

The DIY filing path: T661 in six moves

Form T661 looks intimidating, but its structure is simple. Almost all of the work, and all of the risk, lives in two of its six parts: the project narrative and the expenditure calculation.

You file T661 yourself the same way an accountant would, on the same form. The work concentrates in Part 2 (the project descriptions, where the technical narrative lives) and Part 3 (the expenditure calculation). Parts 1, 4, 5, and 6 are administrative. Read the CRA's T4088 guide before you fill in anything, because it answers most of the questions you will have. Here is the path, in order.

1. Confirm eligibility, project by project. Write a one-page summary of the technological uncertainty, the systematic investigation, and the advancement for each project. If you cannot state all three, that project does not qualify. Leave it out cleanly rather than defend it later.
2. Assemble your records. Pull payroll, contractor invoices, and materials for the fiscal year, and allocate hours by project and by qualifying activity. Keep the underlying time-sheets, code commits, and lab notebooks. Contemporaneous records, kept during the year, are the single best predictor of a claim surviving review.
3. Draft the Part 2 narrative. Lines 240, 242, and 244 are the whole technical case: the uncertainty, the work done, and the advancement sought. Write in plain technical prose to a peer, not to an investor. Structure each project as baseline, then uncertainty, then hypothesis, then experiment, then outcome, and include negative results.
4. Calculate the pool. Add qualifying salaries, contractors at 80% of the contracted amount, and materials, then elect the proxy method on Line 162 to add a flat 55% overhead loading on salaries. Subtract any other government assistance on the same costs. Multiply the pool by 35% for a CCPC under the limit.
5. File with the T2 return. Attach T661 and Schedule T2 SCH 31 to the corporate return. CCPCs have 12 months from the corporate filing deadline to file SR&ED, and late claims are not considered. Do not let that clock expire.
6. Prepare for a possible review. Assemble your time records, payroll allocations, and project documentation as a single PDF before you submit, so a review request is an afternoon of retrieval rather than a scramble.

Our step-by-step T661 form guide walks each of the six parts line by line, with the exact wording the CRA uses on Lines 240 to 244.

What a consultant actually does, and what it costs

A good SR&ED consultant sells three things: narrative craft, calculation accuracy, and review experience. Whether that is worth paying for comes down to the size and messiness of your claim.

SR&ED consultants bill in one of two shapes: a percentage of the credit you recover, paid only if the refund arrives, or a fixed engagement fee. Across the funding market, a full consultant engagement commonly runs up to a few thousand dollars for a straightforward claim, which is the anchor behind our own promise that GrantCompass Premium is 15 to 150 times cheaper than a grant consultant. The honest question is not whether a consultant is good, it is whether their marginal value over your own effort exceeds their fee on your specific claim.

That marginal value lives in three places: narrative quality, which raises the share of claimed expenditures that survive a review; calculation accuracy, which prevents both over-claims that get reduced and under-claims that leave money behind; and review experience, which matters most on first-time and large claims. None of that is magic. A founder who reads the CRA policy carefully and asks an accountant to second-check the claimed-versus-excluded split can build much of the same calibration.

One nuance to read for: on a percentage arrangement, if part of the claim is reduced in review, you bear the full reduction while the consultant simply earns less on the smaller amount. Read the engagement letter on exactly what happens to the fee in a partial reduction, and once your templates and time-tracking mature, renegotiate or move to a fixed fee.

We fundamentally believe that our economic resilience begins and ends with the Canadian entrepreneur.

Isabelle Hudon, President and Chief Executive Officer, Business Development Bank of Canada

The mistakes that get DIY claims reduced

Most first-time DIY claims are not rejected because the work did not qualify. They are reduced because the file described strong work weakly, or could not trace the numbers to records.

Reviewers read your description of the work, not your code or your lab. That makes SR&ED a writing test as much as a technical one. The failures below are the ones that recur, and every one is avoidable.

• Commercial framing. Narratives that read like product launches ("we built our engine," "best-in-class") signal that the writer does not understand the program. Describe technical actions and what you learned, including failures, not business outcomes. The single most useful editing pass is to delete every sentence that would be true whether or not the work was technologically uncertain.
• No stated baseline. "Novel approach" is empty without a comparator. Name the specific publications, vendor docs, or open-source projects that fell short, so the reviewer can see the work advanced past the field's public knowledge.
• Hours you cannot trace. "75% of engineering payroll" is not an allocation. The CRA accepts time-sheets, calendar reconstructions, and project-tagged time-tracking, but not blanket percentages. If you cannot trace a claimed hour to a record, expect it to be disallowed.
• Reconstructing at year-end. Records created during the work carry weight that a document written the week before a review does not. Build project-tagged time-tracking and a monthly running note per project in the first month of the fiscal year, and the year-end file writes itself.
• Missing the government-assistance netting. An IRAP grant or a provincial credit on the same costs must be subtracted before you calculate the SR&ED credit. This is one of the easiest lines for a reviewer to check, and a common DIY arithmetic error.

If your claim is selected, treat the review as a peer technical conversation, not a tax dispute. Respond within the CRA's window, let your technical lead answer the technical questions, and concede small, genuine reductions cleanly so your credibility holds on the dollars that matter.

Small businesses may be small, but they have a huge impact. They make up 98% of all businesses in Canada, account for nearly half of the country's private sector jobs and generate at least one third of our economic output.

The Honourable Rechie Valdez, Minister of Small Business, Government of Canada

Quick answers

Short, direct answers to the questions founders ask before deciding to file SR&ED themselves.

How much does a SR&ED consultant cost in Canada?

SR&ED consultants bill in one of two ways. The most common is a contingency arrangement, a percentage of the credit you actually recover, charged only if the refund arrives. The alternative is a fixed engagement fee agreed up front, which for a straightforward claim commonly runs up to a few thousand dollars. A percentage arrangement can consume a meaningful share of a small claim, which is why smaller, well-documented claims are usually cheaper to file yourself. On large or complex claims, where narrative quality and review preparation move real dollars, the fee more often earns itself back. Before you decide, estimate your credit so you know the number you are comparing against: our SR&ED calculator gives you a figure from your salary and expenditure inputs in a couple of minutes.

Can you file SR&ED without an accountant?

Yes. The CRA does not require an accountant or a consultant to file Form T661. The form attaches to your T2 corporate return, and a technically literate founder who can read the T4088 guide can complete it. Where an accountant genuinely helps is the calculation cross-check: confirming the proxy-versus-traditional election, the specified-employee salary cap, the 80% contractor treatment, and the government-assistance netting that trips up DIY filers most often. A practical middle path is to write the technical narrative yourself, since you understand the work best, and pay a tax preparer who has filed SR&ED before for a short review of the final numbers. That keeps the expensive, judgment-heavy part in your hands while a second set of eyes catches arithmetic errors. Our T661 form guide covers the parts you do yourself.

Does SR&ED stack with grants and provincial credits?

Yes, with one rule to respect. Federal SR&ED stacks automatically with the five provincial R&D tax credits (Ontario, Quebec, Manitoba, Saskatchewan, and Alberta), filed on the same eligible expenditures. It also coexists with grants such as NRC IRAP, but any other government assistance received on the same costs must be subtracted from your SR&ED-eligible pool before you calculate the credit, and total assistance across all programs generally cannot exceed 75% of eligible project costs. Undisclosed stacking is a common trigger for clawbacks, so name every funding source in the claim. To see which programs pair cleanly with SR&ED for your business, browse our R&D funding guide or the full program directory.

Frequently asked questions

Sources

• CRA, Scientific Research and Experimental Development (SR&ED) tax incentive program
• CRA, Information Circular IC86-4R3
• CRA, Form T661 and the T4088 guide
• CRA, Eligibility of Work for SR&ED Investment Tax Credits Policy
• Government of Canada, Budget 2025, Chapter 2
• Revenu Quebec, Tax Credit for Scientific Research and Experimental Development