Insurance policy deductibles are managed by a plurality of interrelated tables each including a plurality of variables. The variables in a first table include a geographical variable, a transaction variable and an effective policy date variable. The variables in another table include additional geographic variables, structural characteristics, amount of insurance and provides controls for managing deductibles. The variables in a further table distinguish deductibles available to the policies. In an additional table, the variables identify movement from an old deductible to a new deductible.