In their annual budget housing corporations want to get a good indication where the current policy will take them over a number of years. For quite some time now, our consultants have been assisting housing corporations in calculating these financial multi-year prognoses. In order to get the most accurate and reliable picture, future policies will have to be projected and computed in the best possible manner. To help achieve this goal, our WALS system has proven to be of indispensable value.