--- title: "Amount Type" slug: "amount-type" updated: 2026-08-10T20:22:32Z published: 2026-08-10T20:22:32Z canonical: "help.idibilling.com/amount-type" --- > ## 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. # Amount Type The Amount Type window lets you to determine how the discount amount is calculated. **(Show picture)** ![VolDiscountConfigAmountType](https://cdn.us.document360.io/3f7f8ade-bcb1-4ec8-af25-0c0ad8601afb/Images/Documentation/66817.png?sv=2026-02-06&spr=https&st=2026-11-14T11%3A15%3A35Z&se=2026-11-14T12%3A15%3A35Z&sr=c&sp=r&sig=3PrOkuN949SHG8%2FY22PaesR%2F0GeFIrzR8X6F3kcz5CQ%3D) - **Percentage** - the discount amount is a percentage of the eligible charges. - **Constant Amount** - the discount is a fixed amount. This option is not available if the Discount Type is ***Charge*** AND the contributing and eligible factors are different. This is the only option that is available Discount Type is ***Reward Points***. - **Per Occurrence** - the discount amount is a ***charge*** for every instance of metered usage. This option is only available if the Discount Type is ***Charge***. > [!NOTE] > Note > > The Percentage amount type cannot be used for Peak Value calculations.