Budgeting models are guidelines that help an organization guide its resources and allocate them appropriately to manage the finances of an organization. Types of budgeting models include Incremental, Zero-Based, Flexible, Activity-Based, Value-Proposition, Rolling, Performance-Based, Top-Down, and Bottom-Up. Each of these has pros and cons; some are best suited for stable organizations, while others are best suited for flexible, performance-based, or activity-driven organizations. The right model depends on the goals, complexity, and operational needs of the organization.