Do I need to netfile for GST/HST (as a business) directly on CRA website even if I am reporting my self-employment income (with GSH/HST) here in my personal return?

1. do you have a GST number? 

2. If you do have a GST number, do you have the quick method set up with CRA? (must be set up in advanced)

3. If quick method is set up, it is submitted to CRA through your tax return.

4 If no Quick method set up, you will need to do a GST return through CRA's website. 

Thanks for the answer. How can I confirm that quick method is set up?

I suppose you can call them.