You may receive a letter from CRA regarding your GST/HST benefits and Climate Action Incentives and CRA may ask your world income to calculate your benefits amount in following situations:

  1. You filed income tax return first time after your arrival/landing in Canada.
  2. Your marital situation changed and you added your spouse in your tax return but your spouse is not in Canada yet.

You can send RC151 form and a letter to CRA to provide your or your spouse’s world income. Download RC151 form from here and send it to your nearest tax centre.