Definition(s):
In the financial domain, this concept is used to express the probability of interest rates increasing or decreasing, due to the occurrence of some event in a period. The occurrence of some events may pose a risk.
In the TDM context, interest probability refers to the probability that a TD item, if not repaid, will make other work more expensive over a given period of time.
“For example, the interest probability for a testing debt item is the probability that latent defects exist in the system that would have been detected if the testing activity had been completed“. (Seaman and Guo, 2011)