This is a Register Retirement Saving Plan to which you can save up to Eighteen percent of your annual income up to a maximum amount. Are you thinking about retirement? This is one of the saving vehicles you can use to help you retire comfortably. You can set up regular saving to RRSP, invest it into different investments. There are other saving and investment you can use to assist you with saving for retirement, but RRSP is widely used by most Canadians.