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By Émile Audet
December 8, 2025

How to Apply to the Ontario Innovation Tax Credit: Complete Guide

The Ontario Innovation Tax Credit (OITC) offers a valuable opportunity for corporations engaged in scientific research and experimental development (SR&ED) in Ontario. This refundable tax credit allows businesses to claim a portion of their R&D expenditures, enhancing their ability to innovate and grow.

Overview of the Ontario Innovation Tax Credit

The OITC provides a refundable tax credit for qualified expenditures on SR&ED performed in Ontario. For taxation years starting after May 31, 2016, the tax credit rate is 8%. This program is aimed at fostering innovation by reducing the financial burden of R&D for Ontario-based corporations. For full eligibility details, consult the complete program guide.

Eligibility Requirements

To qualify for the OITC, your corporation must:

  • Have a permanent establishment in Ontario.

  • Conduct SR&ED activities in Ontario during the tax year.

  • Be eligible for the federal investment tax credit under section 127 of the federal Income Tax Act.

  • Not be exempt from corporation income tax.

  • File a scientific research and experimental development expenditures claim on federal form T661.

For complete eligibility requirements, see the complete program guide.

Required Documents

Ensure you have the following documents ready for your application:

  • Completed federal form T661 for the relevant tax year.

  • Documentation supporting your SR&ED activities and expenditures.

  • Financial statements for the tax year.

  • Proof of Ontario establishment and operational activities.

Step-by-Step Application Process

Step 1: Evaluate Eligibility

Review the eligibility criteria to confirm that your corporation qualifies for the OITC. For detailed criteria, refer to the complete program guide.

Step 2: Gather Necessary Documentation

Collect all required documents, including financial statements and SR&ED claims. Ensure accuracy and completeness to avoid processing delays.

Step 3: Complete the Application

Fill out the necessary forms, including the federal form T661. Double-check all entries for accuracy.

Step 4: Submit Your Application

Submit your completed application to the Canada Revenue Agency (CRA) along with your corporation's tax return. The full application process is outlined in the complete program guide.

Application Timeline

Applications for the OITC should be submitted with your corporation's annual tax return. Processing times may vary, so early preparation is advised.

Tips for a Successful Application

  • Clearly document all SR&ED activities and associated expenditures.

  • Maintain organized records to support your claims.

  • Consult the complete program guide for detailed guidance.

Common Mistakes to Avoid

  • Incomplete documentation or missing forms.

  • Errors in calculation of eligible expenditures.

  • Late submission of application materials.

What Happens After You Apply

Once your application is submitted, it will be reviewed by the CRA. You will receive notification of your tax credit approval or any required follow-up actions. Visit the complete program guide for more information on the review process.

Conclusion

The Ontario Innovation Tax Credit is a strategic tool for supporting your company's R&D endeavors. By understanding the application process and preparing thoroughly, you can maximize the benefits of this program. For the latest updates and detailed steps, refer to the complete program guide.

About the author

Émile Audet - Canadian grants specialist

Émile Audet

Canadian grants specialist
Working at helloDarwin for some time now, I'm in charge of providing you with the information you need on government aid. Dedicated to helping companies in Quebec and Canada reach their full potential, I write on the helloDarwin blog about the various programs, allowances and funding available to enable organizations to make their digital transformation through access to federal and provincial support.

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