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Budgeting & Forecasting › Zero-Based Budgeting

What is the main criticism of incremental budgeting that ZBB addresses?

Beginner

Answer

Incremental budgeting perpetuates existing spending and inefficiencies by starting from last year's figures and rarely questioning whether activities are still needed, embedding slack. ZBB addresses this by requiring every cost to be justified from zero, exposing and challenging spending that would otherwise continue unexamined.
Real-world example A legacy activity funded for years purely by incremental habit is challenged and cut under ZBB.

Common follow-ups: What does incremental budgeting perpetuate? | How does ZBB challenge it?