A method and system for predicting the profit attributable to a proposed sales promotion of a product, wherein the product has a wholesale price and a manufacturing cost per unit sales, including establishing a base volume for sales of the product in the absence of promotions; determining a sales lift for the plurality of single promotions; and correlating the sales lift with promotion information to provide a sales lift model. The method and system also include proposing a promotion having a cost per unit sales for a promotion time period and having a planned sale price for the product; applying the sales lift model to the proposed promotion to predict sales of the product for the promotion time period; and calculating manufacturer profit based upon the product's predicted sales, cost per unit sales for promotion, wholesale price, and manufacturing cost per unit sales during the promotion time period.