I have to disagree with this. According to,
http://www.cic.gc.ca/english/resources/tools/cit/grant/residence/tax.asp
it states the following:
"These procedures apply only to applications received
on or after June 11, 2015.
To be eligible for citizenship, applicants are required to meet their tax filing obligations under the
Income Tax Act for the appropriate relevant period:
For applications received on or after June 11, 2015 until October 10, 2017
- Four of the taxation years that fall fully or partially within the six years immediately before the date of application.
For applications received on or after October 11, 2017
- Three of the taxation years that fall fully or partially within the five years immediately before the date of application."
It states the tax years must be immediately before the date of the application. So if you sign it today, 2017 is still a tax year, you would tick off you have to file but you haven't filed yet, and then 2016/5/4/3. 3 out of the last 5 years must show that you filed your taxes.