T661 Scientific Research and Experimental Development (SR&ED) Expenditures Claim
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T661 Scientific Research and Experimental Development (SR&ED) Expenditures Claim
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You must download the accessible fillable PDF to your computer. Use Acrobat Reader 10 or later to open the file. Do not click the link to open it in your web browser.
- Download and save the PDF to your computer
- Open the downloaded PDF in Acrobat Reader 10 or later
Form to claim for Scientific Research and Experimental Development (SR&ED) in Canada
Ways to get the form
Download and fill out with Acrobat Reader
You must download and open fillable PDFs in Acrobat Reader 10 or higher.
Previous years: Accessible Fillable PDFs
This form is also available for the years listed below:
Print and fill out by hand
Previous years: Standard print PDFs
This form is also available for the years listed below:
- 2019 – Standard print PDF (t661-19e.pdf)
- 2015 – Standard print PDF (t661-15e.pdf)
- 2013 – Standard print PDF (t661-13e.pdf)
- 2012 – Standard print PDF (t661-12e.pdf)
- 2011 – Standard print PDF (t661-11e.pdf)
- 2010 – Standard print PDF (t661-10e.pdf)
- 2008 – Standard print PDF (t661-08e.pdf)
- 2007 – Standard print PDF (t661-07e.pdf)
- 2006 – Standard print PDF (t661-06e.pdf)
- 2004 – Standard print PDF (t661-04e.pdf)
- 2003 – Standard print PDF (t661-03e.pdf)
- 2001 – Standard print PDF (t661-01e.pdf)
Ask for an alternate format
You can order alternate formats such as digital audio, electronic text, braille, and large print.
Related documents
- T4088 Scientific Research and Experimental Development (SR&ED) Expenditures Claim - Guide to Form T661
- SR&ED T661 Claim Form - 2013 Revision - Claim preparer information
- SR&ED T661 Claim Form - Revised optional filing measure for Part 9
- Scientific Research and Experimental Development Tax Incentive Program
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2023-12-04