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Definition · budgeting

Zero-based budgeting

Zero-based budgeting is a budgeting method requiring every expense to be justified from zero each cycle. For zero-based budgeting, 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 ZBB

Written by Pluvo TeamReviewed by Pluvo Team
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Why it matters

Understanding zero-based budgeting matters because planning only improves decisions when assumptions, drivers, owners, and time periods are explicit enough to revisit when actuals arrive. When the term is tied to a source system, owner, and review cadence, it becomes easier to audit assumptions, catch changes early, and keep operators aligned.

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In practice

  • Planning example

    Teams use zero-based budgeting 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.

  • Review example

    Zero-based budgeting should be reviewed whenever the source system, calculation logic, time period, or decision owner changes. That keeps the definition useful instead of letting it drift into a label.

In practice, teams should define zero-based budgeting with a clear source, owner, time period, and decision before they use it in reporting, planning, or operating reviews.

Understanding zero-based budgeting matters because planning only improves decisions when assumptions, drivers, owners, and time periods are explicit enough to revisit when actuals arrive. When the term is tied to a source system, owner, and review cadence, it becomes easier to audit assumptions, catch changes early, and keep operators aligned.

A strong workflow for zero-based budgeting 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.

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FAQ

What is zero-based budgeting?

Zero-based budgeting is a budgeting method requiring every expense to be justified from zero each cycle. For zero-based budgeting, the useful boundary is the driver, assumption, source data, owner, time period, scenario logic, and decision the model is meant to support.

What are the pros and cons of ZBB?

Zero-based budgeting is a budgeting method requiring every expense to be justified from zero each cycle. For zero-based budgeting, the useful boundary is the driver, assumption, source data, owner, time period, scenario logic, and decision the model is meant to support. For zero-based budgeting, the practical boundary is a budgeting method requiring every expense to be justified from zero each cycle.

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Sources

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