Abstract: A method for dynamically calculating a reimbursement rate for vehicle usage including accessing expected cost factors that include a plurality of specific expected costs, deriving a geographically specific regional baseline CPM reimbursement rate that includes the expected cost factors; accessing a geopoint trip record comprised of a sequence of geopoints that include generated cost factors including a plurality of specific generated costs for the driven vehicle, individually comparing generated cost factors with associated expected cost factors to determine if the generated cost factors are greater than, less than, or equal to the expected cost factors, generating a positive cost allotment for each generated cost factor that is greater than the associated expected cost factor, generating a negative cost allotment for each generated cost factor that is less than the associated expected cost factor, and deriving a dynamic CPM reimbursement rate by adjusting the geographically specific regional baseline CPM rei