---
title: "System-Defined Tiered Rating Methods"
slug: "system-defined-tiered-rating-methods"
updated: 2026-07-22T16:11:27Z
published: 2026-08-10T20:23:40Z
canonical: "help.idibilling.com/system-defined-tiered-rating-methods"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://help.idibilling.com/llms.txt
> Use this file to discover all available pages before exploring further.

# System-Defined Tiered Rating Methods

The system calculates four types of tiered rating. One using the Minutes rating method, one using Occurrences, one using Total Occurrences, and one using Total Count.

- Minutes rating method: Usage in each tier is rated individually. When one tier is full, any additional minutes are rated at the next tier level. (Used for seconds-based usage types only)
- Occurrences rating: Usage in each tier is rated individually. When one tier is full, any additional minutes are rated at the next tier level. (Used for occurrence-based usage types only)
- Total Occurrences rating: Usage is totaled just before billing and that total determines which tiered rate is used for all usage. (Used for occurrence-based usage types only)
- Total Count rating: Usage ***records*** are counted just before billing and that count determines which tiered rate is used for all usage. (Can be used for all three usage types: seconds-based, occurrence-based, and percentage-based.)

Tiered rating only occurs during re-rating. The system knows when calls that need to be re-rated have been loaded and re-rates before billing, if necessary.