corporatefinanceinstitute.com › resourcesMonthly Cash Flow Forecast Model - Guide and Examples Oct 08, 2020 · Monthly Cash Flow Forecast Model. With a rolling monthly cash flow forecast, the number of periods in the forecast remains constant (e.g., 12 months, 18 months, etc.). The forecast is rolled forward every time there is a month of historical data to input. Rolling forecasts work best when key cash flow drivers are modeled explicitly and directly ...