How can I apply to Cancel or waive penalties and interest at the CRA ?

You can apply to cancel or waive penalties and interest by following:

• Explain why you are requesting relief: You will need to provide a detailed, complete, and accurate description of your circumstances to explain why you are requesting relief.
• Gather the necessary documentation
• Submit your request

Check for more information here at the CRA website: How to apply – Cancel or waive penalties and interest at the CRA - Canada.ca (opens in a new tab)