Mar 10, 2016 · A rolling forecast is defined as an updated projection – typically provided monthly or quarterly - of business results covering a fixed number of future periods, most commonly 18 months. With each passing month or quarter, one forecast period's data is replaced with actual results and a new period added. Jan 17, 2020 · A rolling forecast or continuous forecast is a financial forecast which is continually updated so that your business is always looking ahead for a fixed period, normally the next twelve months. Financial forecasts are a map of where a business is going. They are a guide, not a manifesto to be stuck to come what may.