PIE funds work exactly like term deposits, except the interest you earn can be taxed at a lower rate. These lower rates are called prescribed investor rates (PIRs): Annual Income Income Tax Rate PIR $15,601-$53,500 17.5% 10.5% $53,501-$78,100 30% 17.5% $78,101-$180,000 33% 28% $180,000+ 39% 28% If you're not sure about your PIR, …