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Find a Lawyer » Canada Legal Guides » Money, Taxes & IP Canada » CRA Tax Disputes & Audits Canada » Appealing CRA Denials of Scientific Research and Experimental Development (SR&ED) Claims in Canada

Appealing CRA Denials of Scientific Research and Experimental Development (SR&ED) Claims in Canada

18 Jun 2026 4 min read No comments CRA Tax Disputes & Audits Canada
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If the CRA denies your SR&ED claim following a technical review, you have exactly 90 days from the date of the Notice of Reassessment to file a Notice of Objection. Successfully appealing requires clear engineering or scientific documentation proving your project faced genuine technological uncertainties.

The Scientific Research and Experimental Development (SR&ED) program is the largest source of federal government support for industrial research in Canada. Whether you are a software developer in a Toronto tech hub or a manufacturing plant in Montreal, SR&ED tax incentives provide massive cash refunds and tax credits. However, the Canada Revenue Agency (CRA) has become increasingly aggressive in auditing and denying these claims. 🚨

When a CRA Research and Technology Advisor (RTA) reviews your claim, they often dismiss the work as “routine engineering” or standard software development, concluding it lacks true technological advancement. Having a major SR&ED claim denied can cripple a company’s cash flow. Knowing how to dispute an unfair technical review and escalate the matter legally is critical to recovering the funds your Canadian business is entitled to. 📈

Step-by-Step Process for Disputing an SR&ED Denial in Canada

Fighting an SR&ED denial is a highly technical process that blends tax law with specialized scientific evidence. Do not simply argue that your project was “hard to do.” You must prove it meets the exact legal definition of SR&ED. Here is the process to defend your claim. 📍

Step 1: Responding to the RTA’s Proposal Letter

Before a final denial is issued, the CRA technical reviewer (RTA) will send a proposal letter outlining why they believe your project fails the SR&ED criteria. You generally have 30 days to provide additional information. This is your best chance to resolve the issue early. Bring in your lead engineers and possibly an independent SR&ED consultant to directly address the RTA’s concerns regarding technological uncertainty. 📝

Step 2: Requesting an Administrative Second Review

If you fundamentally disagree with the RTA’s assessment and believe they are being unreasonable, you can request an administrative second review before the final reassessment is issued. The CRA will assign a different technical reviewer to evaluate your file. This step requires a highly structured argument showing how the first reviewer misinterpreted the Income Tax Act guidelines. 📄

Step 3: Filing a Formal Notice of Objection

If the CRA finalizes the denial and issues a Notice of Reassessment, you have a strict 90-day deadline to file a Notice of Objection. At this stage, your file is transferred to the CRA Appeals Division. It is highly recommended to retain a Canadian tax law firm that specializes in SR&ED disputes. They will prepare a comprehensive legal and technical brief to present to the appeals officer. ⚠️

Step 4: Appealing to the Tax Court of Canada

If the Appeals Division upholds the denial, your final option is to file a Notice of Appeal with the Tax Court of Canada. Litigation is expensive, but for claims worth hundreds of thousands of dollars, it is often necessary. In court, an impartial judge will hear expert testimony to determine if your work qualifies as genuine experimental development under Canadian law. 💲

How Much Does it Cost in Canada?

Disputing an SR&ED denial involves significant professional fees, but the return on investment can save your company’s financial future. 💵

  • Lost Tax Credits: A denied claim can mean losing anywhere from $20,000 CAD to over $1,000,000 CAD in refundable Investment Tax Credits (ITCs), depending on the size of your payroll and material costs.
  • SR&ED Consultant Fees: Specialized technical consultants may charge hourly rates of $200 CAD to $400 CAD, or work on a contingency fee (usually 15% to 30% of the recovered amount).
  • Law Firm Fees: Retaining a tax litigation lawyer to file an objection or take the case to the Tax Court generally costs between $10,000 CAD and $35,000 CAD+ depending on complexity.

How Long Does the Process Take?

Appealing an SR&ED decision is a lengthy administrative and legal battle. You must prepare your business cash flow accordingly. ⏱️

  • The 90-Day Deadline: You must file your Notice of Objection within 90 days of the date on the Notice of Reassessment.
  • Appeals Division Review: Waiting for a CRA appeals officer to review and decide on your objection usually takes 12 to 24 months due to significant federal backlogs.
  • Tax Court of Canada: If you proceed to court, reaching a trial and receiving a judgment can easily take 2 to 4 years.

Frequently Asked Questions (FAQ)

What is the difference between routine engineering and SR&ED?

Routine engineering involves using standard industry practices or known troubleshooting methods to solve a problem. SR&ED occurs when standard practices fail, and you must generate new technological knowledge or undertake systematic experimental testing to overcome an uncertainty.

Can I appeal if my financial costs were denied, but the tech was approved?

Yes. Sometimes the CRA agrees that SR&ED occurred but audits the financial side, claiming your labour hours, material costs, or contractor invoices are inflated or improperly documented. You can file an objection focusing strictly on the financial reassessment.

Do I have to pay back the SR&ED refund while appealing?

If the CRA paid out your refund and later audited and denied it, they will issue a reassessment demanding the money back. Filing a Notice of Objection generally pauses collection actions, but daily compound interest will accumulate if you lose the appeal.

Will appealing an SR&ED denial trigger more CRA audits?

Filing a legal Notice of Objection is your fundamental right as a Canadian taxpayer and does not automatically trigger audits for other tax years. However, a history of denied claims may flag future SR&ED applications for closer upfront scrutiny by the CRA.

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