Just like securing a loan from a bank, P2P lenders charge several types of fees. These fees may vary from one lender to another. For instance, some investors may charge a one-time registration fee. They also charge an annual percentage rate (APR) between 5% - 36%, which is the percentage of principal you may pay every year. Depending on your credit rating, you may pay an average of 5% - 12% interest rate. If you default in payments, they have a penalty fee, mostly not less than 5% of the unpaid amount. And when processing loans, they charge an additional fee, typically between 0% - 8%.