Zina

according to the CRA website, we can file electroniclly for deceased person, so is the issue with Ufile or the regulations are not updated online?

I am having issue with transimiting 2020 return for a deceased person using netfile through Ufile software. I selected all the applicable details for Final Return and it is giving me an error that that Return cannot be transmited as it is for a deceased person. see below screenshot can someone help?