T661 Scientific Research and Experimental Development (SR&ED) Expenditures Claim

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.

  • Accessible Fillable PDF (t661-fill-20e.pdf)
  Previous years: Accessible Fillable PDFs

  This form is also available for the years listed below:

  • 2019 – Fillable PDF (t661-fill-19e.pdf)
  • 2015 – Fillable PDF (t661-fill-15e.pdf)
  • 2013 – Fillable PDF (t661-fill-13e.pdf)
  • 2012 – Fillable PDF (t661-fill-12e.pdf)

• Print and fill out by hand

  • Standard print PDF (t661-20e.pdf)
  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.

  • Order alternate formats for persons with disabilities

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