Hello. I am planning to move back to canada (ontario) after my divorce here in the US (california) is final. I haven't filed any taxes in canada while i was away (7years) which made my SIN dormant. Im bringing two kids with me. My 7 year old who was born in canada and my 3 year old who was born in the US. I will be applying my 3year old his canadian certificate. Please help give me tips what i can do in advance, and what i should expect, as far as child tax benefits, my kids going to school, ohip, and among others.