Definition · cost management
Cost driver
Cost driver is a factor whose change causes a change in cost, used to model and allocate expenses. For cost driver, the useful boundary is the driver, assumption, source data, owner, time period, scenario logic, and decision the model is meant to support.
Also known as cost factor
Why it matters
Understanding cost driver matters because planning only improves decisions when assumptions, drivers, owners, and time periods are explicit enough to revisit when actuals arrive. Pluvo links each cost driver to the expense it moves and traces a change back to its source, so cost variances are explained rather than estimated.
In practice
Planning example
Teams use cost driver when a forecast, budget, or scenario needs an assumption that can be revisited. The finance team should know the driver, source data, owner, and period before using it in a model.
Pluvo example
Pluvo links each cost driver to the expense it moves and traces a change back to its source, so cost variances are explained rather than estimated.
In practice, teams should define cost driver with a clear source, owner, time period, and decision before they use it in reporting, planning, or operating reviews.
Understanding cost driver matters because planning only improves decisions when assumptions, drivers, owners, and time periods are explicit enough to revisit when actuals arrive. Pluvo links each cost driver to the expense it moves and traces a change back to its source, so cost variances are explained rather than estimated.
A strong workflow for cost driver separates the definition from the action: first agree what the term means, then decide how it is measured, when it changes, and who is accountable for the next step.
Pluvo links each cost driver to the expense it moves and traces a change back to its source, so cost variances are explained rather than estimated.
FAQ
What is a cost driver?
Cost driver is a factor whose change causes a change in cost, used to model and allocate expenses. For cost driver, the useful boundary is the driver, assumption, source data, owner, time period, scenario logic, and decision the model is meant to support.
What are examples of cost drivers?
For cost driver, the useful categories depend on a factor whose change causes a change in cost, used to model and allocate expenses. Teams should name the categories they use, map each one to source data, and keep the same taxonomy across reporting periods.