Child Care Tax Benefit (CCTB) If you are currently receiving the CCTB, you need to inform Canada Revenue Agency about the change of address. Their website has more information about how to change your address. This is a federal program, so you do not need to inform any authorities in Ontario.
If you want to start getting the CCTB, you can find more information about applying in our Settlement.Org article, How do I apply for the CCTB?
We hope that others will be able to share their relocation experieinces and suggestions with you.
I hope this information is helpful. Please let us know if you have further questions and if there is any follow up to your question/situation.