Canadians can contribute up to 18% of their income or the maximum contribution limit towards the RRSP. According to the CRA, you can contribute up to a maximum of $27,830 towards your RRSP in 2021 (increase of $600 over 2020 contribution limit).
TFSA limit for 2021 stays the same at $6,000 per year.
If you are unsure about your contribution room for both RRSP and TFSA, you can find this information at the bottom of the last years’ Notice of Assessment or by logging into CRA Myaccount:
https://www.canada.ca/en/revenue-agency/services/e-services/e-services-individuals/account-individuals.html