AAPR stands for Average Annualised Percentage Rate. Introduced in 2003, the AAPR is a system to help Australians weigh up different loans. It colates interest rate, most fees, and the charges payable of different loans into a single percentage. It is a legal requirement for all lenders to publish this percentage when they are advertising their loans. Referring to the AAPR makes it easier for people to compare loans and choose the one that suits them best.