File Income Tax (Calgary)

Hello Anybody/Everybody!

I moved from Dubai, a Tax Free region last year. So for the first time I will be filing my Income Tax returns here. Any suggestions as to how I should go about it?

Is it easy enough to do it by myself online? Any particular website you would recommend? Any dos & don'ts? or

Should I shop for a Professional to file my returns? Anybody that you would recommend? How much would they charge me for the service? Any dos and don'ts?

Any feedback would be appreciated.

Thanks,
Mary