Sales forecasting is the process of organizing and analyzing information in a way that makes it possible to estimate what one?s sales will be. This paper outlines simple methods of forecasting sales using easy to find data. Sales revenues from the same month in the previous year make a good base for predicting sales for that month in the succeeding year. Credible forecasts can come from those who have the actual customer contact. Get the salespersons most closely associated with a particular product line, service, market or territory to give their best estimates. Experience has proven the grass roots forecasts can be surprisingly accurate.