Once you have worked through your tax return and submitted it through NETFILE, you should receive a confirmation number. Record and remember this confirmation number in case there are any issues with your filing. The number is a traceable record with the time and date of your submission.
Next, you should receive your notice of assessment via mail or online (if you have signed up for online correspondence). This is the first step towards knowing if all is in order with your tax return.
The Canada Revenue Agency may require you to send more information to explain an item or to confirm information held within your tax return. Provide the requested information promptly to avoid delaying your refund if one is coming to you.