A sales forecast is a prediction of the revenue expected to close in a future period, based on current pipeline weighted by stage and probability. Its value is not precision but planning: a reliable forecast lets you make hiring, capacity, and cash decisions with confidence rather than hope.

A forecast is only as honest as the pipeline behind it, which is why most founder forecasts are fiction. If deals sit in stages they have not earned, the forecast inflates and you plan against revenue that will not arrive. A disciplined forecast, built on real exit criteria, is what lets you hire and spend ahead of demand without gambling.

Example:

A forecast weighting each deal by its stage probability produces a realistic number. One that counts every open deal at full value produces a fantasy.

What makes a sales forecast reliable?

A clean pipeline where deals occupy stages they have genuinely earned, weighted by realistic stage probabilities rather than optimism.

Why do sales forecasts fail?

Usually because the underlying pipeline is inflated. Deals sit in advanced stages without meeting the criteria, so the forecast overstates what will close.