If I make a loan through Prosper, what guarantees do I have that the loan will get repaid?

There are no guarantees that your loan will be repaid. We try to give lenders as much information as possible about the credit worthiness (or "credit grade") of the borrowers on the site, their debt burden (known as the "debt to income ratio"), and the expected default rate of a borrower with their credit grade, which is based on historical data from Experian, one of the three major credit reporting agencies.

The way to ensure a good return on your investment is to diversify your lending—create a standing order to place bids on many listings, and spread your risk across many borrowers. If you make 100 loans to B-rated borrowers at 8%, and B-rated borrowers have an expected default rate of 1.8%, then you might have 2 borrowers default, which would lower your return by 2%. After annual lending fees of 0.5%, this would give you an annual 5.5% return overall. Learn about diversifying your lending with standing orders.