Key terms
Budget
Where we want to go
Numbers, where lower is better, are budgeted.
Numbers, where higher is better, are targeted.
A budget is updated infrequently, once or twice a year.
There's usually just one budget, though it can cover many aspects of the business in detail.
Forecast
Where we’re actually going
A forecast is based on what's happened so far and what we think is likely to happen in the future.
A forecast quickly becomes outdated as new events unfold.
They must be updated frequently to remain useful. Quarterly, monthly, or even weekly.
There can be multiple forecasts to game out different possible futures. These are called scenarios.
Actuals
Where we actually went
Numbers from the company's books, recorded via bookkeeping.
Actual numbers are compared to the budgeted numbers to see whether things went according to plan or not.
When things didn't go according to plan, the actuals and the budget will be significantly different. This is called a variance.