APR or annual percentage rate is used for personal loans and credit contracts other than a mortgage. APR includes the standard fees and interest rate you pay on loan. It is helpful when comparing loans to find out which one is best. APRC or annual percentage rate of charge is used for secured loans and mortgages. APRC includes all the charges ( fees and other costs) and calculated on the basis that the mortgage is kept for the full duration without a change. APRC is used to compare mortgage and secured lending products.