Risk-based pricing is a methodology adopted by many lenders in the mortgage and financial services industries. It has been in use for many years as lenders try to measure loan risk in terms of interest rates and other fees. The interest rate on a loan is determined not only by the time value of money, but also by the lender's estimate of the probability that the borrower will default on the loan. A borrower who the lender thinks is less likely to default will be offered a better (lower) interest rate. This means that different borrowers will pay different rates.

The lender may consider a variety of factors in assessing the probability of default. These factors might be characteristics of the individual borrower, like the borrower's credit score or employment status. These factors might also be characteristics of the loan; for example, a mortgage lender might offer different rates to the same borrower, depending on whether that borrower wished to buy a single-family house or a condominium.