--- title: "Tier Types" slug: "tier-types-1" updated: 2026-07-23T15:38:06Z published: 2026-08-10T20:23:40Z canonical: "help.idibilling.com/tier-types-1" --- > ## 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. # Tier Types The IDI platform uses two tier types for rating usage: **Total** The total tier type uses grand totals of the usage to determine the rate the usage is charged. Example of Total Tier rating: | Tier | Minutes | Rate | | --- | --- | --- | | 1 | 0-800 | $0.10 per minute | | 2 | 801+ | $0.08 per minute | For the selected bill period, the customer had 1000 minutes of total usage. Each usage record is rated at $.08 per minute. The charge is $80.00. **Stepped** The stepped tier type uses running totals of the usage to determine which tier to use when rating the usage. Example of Stepped Tier rating: | Tier | Minutes | Rate | | --- | --- | --- | | 1 | 0-800 | $0.10 per minute | | 2 | 801+ | $0.08 per minute | The customer has made 3 calls in the selected bill period, each with 500 minutes of usage. - The first call is charged at the $0.10 per minute rate, or $50.00. - The second call is charged at $0.10 per minute for the 1st 300 minutes ($30.00) and $0.08 per minute for the remaining 200 minutes ($16.00), or $46.00 for the call. - The third call is rated at the $0.08 per minute rate, or $40.00. - The charge for all three calls is $136.00.