Can I know which province resident I should belong to? I moved from Alberta to Ontario on 16-12-2023. I am doing remote work and the company is in Alberta.

You will indicate the province you lived in on December 31st, 2023 which I believe you indicated was Ontario. This is the answer to "Where did you live on December 31st?"

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I moved from Ontario to Alberta on Feb 2024, what should I write as the province of residence. I did put Ontario because I was there on 31 December 2023 and put mailing address of Alberta. Is that alright?

@Samreet  Yes, that's right.