# What is Zero-Based Budgeting? Definition & Technical Mechanics

> **Source:** [SPIDITS AI Startup & Venture Intelligence Glossary](https://spidits.com/startup-glossary)  
> **Category:** Metrics  
> **Canonical Citation:** [https://spidits.com/startup-glossary/zero-based-budgeting](https://spidits.com/startup-glossary/zero-based-budgeting)

## Definition
Zero-Based Budgeting (ZBB) is an accounting method where all startup expenses must be justified and approved from scratch for each new period, rather than adjusting the previous budget.

## Architectural Mechanics & Deep Dive
Zero-Based Budgeting (ZBB) is an accounting method where all startup expenses must be justified and approved from scratch for each new period, rather than adjusting the previous budget, helping optimize burn rates.

## Industry Applications & Real-World Use Cases
Burn rate optimization and financial discipline

## Frequently Asked Questions

### What is the main benefit of Zero-Based Budgeting?
It prevents waste and helps early-stage startups identify and eliminate redundant SaaS subscriptions or ineffective marketing channels.

### Is ZBB time-consuming?
Yes, it requires significantly more management effort and audit detail than rolling budgets forward.

## Related Terminology
- [burn-rate](https://spidits.com/startup-glossary/burn-rate)
- [runway](https://spidits.com/startup-glossary/runway)
- [working-capital](https://spidits.com/startup-glossary/working-capital)

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*From the SPIDITS AI Knowledge Base (300+ terms indexed). Explore full technical definitions: [https://spidits.com/startup-glossary](https://spidits.com/startup-glossary)*