Canada · Federal SR&ED · CRA · Income Tax Act
Canada’s SR&ED programme rewards eligible scientific and technological experimentation under the Income Tax Act and Canada Revenue Agency (CRA) guidance. Here you will find how federal ITCs and deductions work, how claims attach to your T2 and T661, what records reviewers expect, and links to official sources.
Last reviewed 28 April 2026 · Verify against Canada Revenue Agency (SR&ED) and Income Tax Act (Justice Laws) · Not tax advice
Overview
SR&ED is the federal programme under the Income Tax Act that supports business R&D through deductions and investment tax credits (ITCs) on eligible expenditures. The CRA reviews whether work meets the statutory definition: technological advancement, technological uncertainty, and systematic investigation, usually documented through technical narratives, financial records, and contemporaneous engineering evidence.
Unlike some newer country programmes, Canada does not require a separate “pre-approval portal” before you spend. The trade-off is different: your documentation is the proof. Teams that ship real experiments but leave only thin tickets risk opportunity cost: eligible innovation that never makes it into a defensible claim.
AutoDoc connects to Jira, GitHub, Confluence, and similar tools so you can turn engineering activity into advisor-ready SR&ED narratives while keeping your existing delivery process.
At a glance
*Rates and refundability depend on entity type, income, and budget year. †Confirm retention with your advisor.
Primary sources
AutoDoc summarises publicly available CRA and legislative material to help you plan documentation. Only official publications and your qualified SR&ED advisors establish legal positions.
| Source | What you will find |
|---|---|
| CRA: SR&ED programme hub | Program overview, policies, guides, forms (including T661), and links to technical publications. |
| Income Tax Act (Justice Laws) | Consolidated federal statute text (including SR&ED provisions). Use alongside CRA interpretation. |
| Department of Finance Canada | Budget measures and tax expenditure descriptions that can change rates, definitions, or stacking over time. |
| Ontario: business tax credits (example) | Provincial R&D-related credits for Ontario corporations; eligibility interacts with federal SR&ED. |
| Scientific Research and Experimental Development Guide (CRA) | Policies, guidelines, and technical direction CRA uses when reviewing claims. |
Credit structure
SR&ED is not a single “flat percentage coupon.” Corporations generally claim an eligible expenditure pool (salaries, materials, some contract payments, and prescribed overhead under traditional or proxy rules), then apply investment tax credits according to entity type, income, and current law. Your advisor models the exact pool, method, and stacking with provincial credits.
| Mechanism | What it does | Where to verify |
|---|---|---|
| Deduction / expenditure treatment | Reduces taxable income for eligible R&D work performed in Canada, subject to statutory rules. | Income Tax Act |
| ITC (often discussed as ~35% for CCPCs) | Credit on eligible expenditures; refundability and caps depend on corporation type, taxable income, and budget-year rules. | CRA SR&ED hub |
| Provincial / territorial credits | Additional credits (e.g. Ontario) may apply; elections, stacking, and rates change. Model stacking with your provincial advisor. | Example: Ontario |
Illustrative percentages on marketing pages go stale when budgets pass. Treat the CRA programme pages, T661 instructions, and your SR&ED consultant’s model as the source of truth for the year you are filing.
How to claim
SR&ED is claimed through your Canadian income tax return with supporting technical and financial schedules. CRA does not run a pre-approval gate before you spend; instead, documentation and deadlines decide whether a position is defensible. The sequence below is what most experienced teams follow.
01
Work with your technical leads and SR&ED advisor to separate eligible experimental development from routine engineering. Hypotheses, unknowns at kickoff, and how you tested them should be clear before you write the T661 narrative.
Uncertainty guide (blog)02
Commits, PRs, design docs, experiment logs, CI failures, and time allocation should tell one coherent story per project. Retrofitting a year of “SR&ED story” in March is the main source of opportunity cost.
Eliminate SR&ED back-and-forth03
Map eligible salaries, materials, contracts, and overhead using the method your advisor recommends. Provincial credits may require additional schedules or elections.
SR&ED complete guide (blog)04
Corporate SR&ED claims attach to the T2 package with prescribed forms and deadlines. Miss the window and you may lose the credit for that year entirely. Confirm dates for your fiscal year with CRA and your accountant.
SR&ED documentation guide (AutoDoc)Eligibility standard
CRA reviewers look for work that fits the Income Tax Act definition: scientific research and experimental development carried on in Canada through a systematic investigation or search carried out in a field of science or technology by means of experiment or analysis. In practice, advisors group that into three ideas you can explain to your CTO without tax jargon.
International teams sometimes map these to Frascati-style “R&D vs routine” thinking. That can help intuition, but your claim is judged against Canadian statute and CRA policy, not a foreign checklist.
You aimed to create new (or improve existing) materials, devices, products, or processes where advancement depended on resolving technological uncertainty.
The question is not only whether the product shipped. It is whether you generated or discovered technological knowledge that advanced capability in your field. A competent practitioner should be able to read your file and see what moved, and why that was not obvious before the work began.
It was not known at the outset whether your goals could be achieved, or how to achieve them, within standard practice.
Document what was unknown when work began, what alternatives you considered, and what experiments or prototypes reduced that uncertainty. If a skilled team could have solved the problem using publicly available methods without investigation, you may be outside SR&ED. Your advisor tests this against CRA software and eligibility guidance.
Work followed a deliberate cycle: hypothesis, test, observe, iterate, rather than ad hoc trial and error with no trace.
Your engineering paper trail (tickets, commits, design reviews, benchmarks, failed builds) should read as a coherent investigation. The same artifacts that ship the product should support the T661 project descriptions.
Your documentation is your eligibility proof
Every commit, ticket, experiment log, and design decision strengthens or weakens the story a reviewer can reconstruct months later. AutoDoc connects to your engineering stack to capture and structure this continuously, producing advisor-ready SR&ED narratives aligned with how CRA expects projects to be described.
Eligibility examples
The boundary between qualifying experimental development and routine engineering is where most SR&ED reviews focus. These examples are illustrative only. CRA decides based on facts, records, and current policy, not website summaries.
Quick estimate
Enter an approximate qualified SR&ED expenditure pool (CAD) and entity type for an illustrative federal ITC range. This uses a simplified CCPC two-rate model (35% then 15% above an illustrative $3M band) or a flat 15% sketch for other corporations. Provincial credits, income grinds, and proxy vs traditional rules are not modeled. Confirm with your SR&ED consultant.
Enter a rough qualified SR&ED expenditure pool (CAD) and entity type. Illustrative federal ITC only. Not tax advice.
Provincial credits, proxy vs traditional method, income-based expenditure limits, and refundability are not modeled here. Verify with your advisor and the CRA SR&ED programme pages.
Illustrative scenarios
Numbers below are not tax outcomes. Only your advisor can model the T661 pool, provincial elections, and income-based limits. The point is that documentation density often matters as much as headcount.
Scenario A
Engineering shipped multiple spikes and prototypes, but Jira only says “improve latency.” Without linking hypotheses to benchmarks, the same spend produces a weaker file, more advisor rework, and higher CRA information-request risk.
Scenario B
Hardware and firmware teams often generate natural experiment traces (bench results, oscilloscope captures, failed board spins). When those artifacts are tied to project hypotheses, SR&ED reviews tend to focus on quantum and allocation, not basic eligibility.
AutoDoc for Canada
Full calculator, eligibility screener, and SR&ED Q&A assistant, each linked to CRA-style themes and official reading. Use them alongside solid records so your T661 matches what engineering actually shipped.
Quick slider or payroll-based pool sketch in CAD, with illustrative federal ITC breakdown and links to CRA sources.
Calculate my creditSix directional questions on advancement, uncertainty, systematic work, Canada performance, exclusions, and material spend.
Screen my projectsAsk about T661 themes, proxy vs traditional, documentation, provincial overlays, and how CRA describes uncertainty.
Ask a questionCompliance
SR&ED claims live or die on contemporaneous technical and financial evidence. Build these habits from the first sprint of the fiscal year, not the week before your accountant needs the T661.
01
For each SR&ED project, capture the baseline knowledge, what could not be resolved without investigation, and what you learned, including failed experiments.
02
PRs, design docs, CI runs, bench logs, and screenshots should reference the question they were meant to answer, not only the ticket title.
03
Maintain credible splits between eligible SR&ED, support work, and commercial delivery. Proxy vs traditional method changes what overhead evidence you need.
04
Eligible contract payments have specific rules; keep statements of work, deliverables, and Canadian performance evidence as prescribed.
05
If you claim Ontario or other provincial credits, track the additional forms, elections, and stacking rules your advisor requires.
06
Keep technical and financial records for the period your advisor recommends (often multi-year). CRA may review prior-year claims after assessment.
Go deeper
End-to-end primer on filing, documentation themes, and how teams prepare a defensible claim.
Read guide EligibilityHow to articulate unknowns at kickoff, a hinge point for many software and hardware reviews.
Read guide ProcessWhy contemporaneous capture beats year-end reconstruction for advisors and CRA.
Read guide ComparisonOne engineering org, multiple incentive regimes, and how evidence expectations diverge.
Read guide StrategyPractical themes for strengthening claim quality without slowing delivery.
Read guide Case studyHow a Canadian team structured documentation workflows around real claim cycles.
Read guideCommon questions
Educational answers grounded in publicly available CRA materials and the Income Tax Act. Not tax advice. Confirm all positions with a qualified Canadian SR&ED and tax professional.
SR&ED (Scientific Research and Experimental Development) is Canada’s largest federal programme supporting business R&D. It provides tax incentives, including deductions and investment tax credits (ITCs), for eligible work that advances science or technology through systematic investigation or experimentation when outcomes were uncertain at the outset. The Canada Revenue Agency (CRA) administers claims under the Income Tax Act and published policies and guides.
Canadian-controlled private corporations (CCPCs), other corporations, partnerships, and individuals carrying on business in Canada may claim eligible SR&ED expenditures they incur for work performed in Canada, subject to CRA rules, filing deadlines, and substantiation requirements. Entity type affects credit rates, refundability, and income thresholds. Your SR&ED practitioner models this.
Eligible expenditures are reported with your income tax return (typically on a T661 Scientific Research and Experimental Development (SR&ED) Expenditures Claim form for corporations, with supporting technical and financial information). Deadlines are strict: corporations generally have 12 months after the income tax filing due date for the tax year to file an amended SR&ED claim, and six months after fiscal year-end for the initial T2-related window. Confirm current CRA deadlines for your situation.
The traditional method claims specified overhead and other eligible expenditures with detailed support. The proxy method replaces a portion of overhead with a prescribed percentage of eligible salary wages (the “proxy” amount), reducing some overhead tracking burden but following prescribed rules. Your advisor selects the method that fits your records and risk profile.
Yes, when it meets the statutory criteria: technological advancement, technological uncertainty, and systematic investigation by experiment or analysis. Routine programming, configuration, or commercial deployment without genuine technological uncertainty generally does not qualify. CRA publishes software-specific guidance and examples.
Several provinces and territories offer complementary R&D credits or harmonized programmes. For example, Ontario has had programmes such as the Ontario Innovation Tax Credit (OITC) and Ontario Research and Development Tax Credit (ORDTC) for qualifying corporations. Rules, stacking, and elections change over time; verify current Ontario Ministry of Finance and CRA guidance.
Contemporaneous technical narratives, hypotheses, experiment results, version control, test logs, lab notes, project plans, and financial documentation linking time and costs to eligible work. CRA reviews whether documentation supports the claim as filed; reconstructing evidence months later is high risk.
CRA generally expects you to keep adequate records for a period consistent with the normal reassessment period (commonly understood as several years from the notice of assessment, often discussed as six years for many tax records). Confirm retention with your advisor for your corporation type and province.
SR&ED is a Canadian statutory programme with T661 filing and CRA technical review traditions. The US research credit under IRC section 41 uses a different base calculation. The UAE programme (from 2026) uses Corporate Tax credits with mandatory R&D Council pre-approval. Documentation themes overlap (uncertainty, systematic work), but filing mechanics differ by country.
Many teams perform genuine experimental development, but tickets and commits never record what was unknown at kickoff or how hypotheses were tested. That gap creates opportunity cost: eligible work is harder to defend. AutoDoc software ties engineering activity to structured evidence your SR&ED consultant can use.
No. AutoDoc provides software and educational content to help teams document R&D contemporaneously. Eligibility, method selection, and filing positions must be confirmed by qualified Canadian SR&ED and tax professionals.
Have a more specific question?
Use the Canada SR&ED Q&A assistant for CRA-themed questions, then bring notes to your consultant for filing decisions.
Ready to get started?
AutoDoc connects to Jira, GitHub, Confluence, Notion, and the rest of your engineering stack so the work you already ship becomes the backbone of advisor-ready SR&ED documentation.
Disclaimer: This page contains general information only, not legal, tax, or accounting advice. Tax rules and CRA administrative positions change; confirm every filing position with a qualified Canadian SR&ED advisor and the official CRA and Department of Finance Canada publications applicable to your year and province.