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How does ZBB handle activities that are legally required or essential? How long does ZBB typically take compared with incremental budgeting? How does ZBB affect employee behavior and morale? How does ZBB support cost management and strategic reallocation? How does ZBB improve resource allocation compared with incremental budgeting? How can ZBB be combined with continuous improvement or lean thinking? What are the risks of ZBB being reduced to a cost-cutting exercise? How do modern 'ZBB 2.0' approaches use technology and data? How do you sustain the benefits of ZBB over time? How does ZBB interact with strategic priorities during ranking?
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Budgeting & Forecasting › Zero-Based Budgeting

How does ZBB relate to activity-based budgeting?

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Both focus on activities and challenge historical spending. ABB budgets resources based on the cost of activities needed to meet demand (driver-based), while ZBB justifies and ranks activities from zero by value. They're complementary: ABB gives the activity-cost logic and ZBB the prioritization/justification discipline; used together they link spending to both demand and value.
Real-world example Combining ABB's driver-based costing with ZBB's justification produces budgets tied to both activity levels and value.

Common follow-ups: How do ABB and ZBB complement each other? | What does each contribute?

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All 34 Zero-Based Budgeting questions