For releve 10 (labour sponsored tax credit) for Fond de Solarite in Quebec - do I also claim this amount into my RRSPs?

No, the Relevé 10 can’t be entered as an RRSP contribution. If you also have an RRSP with The Fonds de Solidarité FTQ, then you should get an RRSP contribution slip as well as a Relevé 10. 

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