Beyond being tax-deductible, RRSP contributions are also able to grow tax-free as they aren’t subject to tax on capital gains, dividends, or interest. The goal of an RRSP, as the name implies, is to provide a tax-efficient vehicle to encourage Canadians to save for retirement. However, the CRA eventually wants to be able to collect tax on all the funds that have accumulated in your RRSP, so by age 71 it must be converted to a RRIF (Registered Retirement Income Fund). Think of a RRIF as the butterfly that emerges from the cocoon that is an RRSP.