Abstract: A method and apparatus for predicting analytically the probability of closing a sale. The apparatus comprises a general purpose computer having a central processing unit (CPU) and a memory for generating sales probabilities. An operating system and sales probability engine are loaded from a storage medium and executed in the memory. The sales probability engine utilizes various sales information to determine the account control level corresponding to a particular stage of the sales cycle. A sales probability is then derived by applying the account control level and the current stage of the sales cycle as indices to a sales probability look-up table.