Rolling forecast

A rolling forecast maintains a constant forward horizon, for example always looking twelve months ahead, by adding a new period onto the end as the oldest period closes and becomes actual results. Instead of a single plan fixed at the start of the fiscal year, the forecast is refreshed on a regular cadence, often monthly or quarterly.

This differs from a traditional annual budget, which is set once and held static for comparison in budget vs. actual reporting even as conditions change. A rolling forecast is meant to be revised, incorporating the latest actuals and updated assumptions each cycle, and is frequently built on top of driver-based planning so that updating a few key drivers refreshes the whole forecast.

Rolling forecasts matter because they keep planning aligned with current reality in businesses where conditions shift faster than the annual budget cycle, reducing the "use it or lose it" pressure that static budgets can create. The main pitfalls are refreshing the forecast so often that teams stop trusting any single version, and failing to reconcile the rolling forecast against the formal budget used for variance analysis, which can leave two competing "truths" about performance in circulation at once.