Does DPSP contributions count towards RRSP limit?
Moreover, do employer contributions affect RRSP limit?
Yes it does. The employer contribution is both a Taxable Benefit and also counts in the RRSP limit for that year. The Tax Receipt for RRSP Contributions you get from the financial institution where you have your RRSP will show the total amount deposited in your account, regardless of the source, employee or employer.
In this regard, are DPSP contributions a taxable benefit?
A Deferred Profit Sharing Plan (DPSP) is an arrangement similar to a Defined Contribution Pension Plan (DCPP) whereby an employer distributes a portion of pre-tax profits to selected employees. The employer's contributions are a tax deductible expense and are not a taxable benefit to the plan member.
Make your RRSP contribution at the beginning of the year to maximize the tax-deferred investment income. To contribute the maximum in 2019, 2018 earned income must have been more than $147,222. To contribute the maximum in 2020, 2019 earned income must be at least $151,278.