In previous years, the Climate action incentive (CAI) was added to your tax return once you entered your province (if you lived in a province that has it). This meant that you would start your return with a refund. Starting in tax year 2021, this credit will no longer be included on your tax return. Instead, it will be paid out during the year. You can read more about it on this this Canada Revenue Agency (CRA) page: Climate action incentive payment
