You don't need a coupon code. You can pay for a TurboTax Online return with a Canadian or US credit card. You can also use our mobile app to pay through Apple Pay or Google Pay.
I realize a code isn't required, however I was trying to get the discount that was being offered 15%. I had completed my return and when I went to check out it was checking me out at the regular price and didn't give me the discount. I gave up trying to figure it out and just paid the regular price so I could get my taxes filed.
If you get offered a discount, you would be sent an email with a link. You would sign in using that link, and the discount will them be applied when you get to the payment section.