---
title: "Calculate prorated discounts"
description: "Discount sequences can be prorated if you select the Prorate discounts check box in the Discounts window."
lang: en
languages:
  en: https://docs.vismasoftware.no/visma-net-erp/help/customer-ledger/manage-discounts/calculate-prorated-discounts/index.md
lastmod: 2026-02-19
---

> Documentation index: https://docs.vismasoftware.no/visma-net-erp/help/customer-ledger/manage-discounts/llms.txt


# Calculate prorated discounts

Last modified February 19, 2026

> Discount sequences can be prorated if you select the Prorate discounts check box in the Discounts window.


## Introduction

Discount sequences can be prorated if you select the **Prorate discounts** check box in the Discounts window. For prorated discount sequences, the discount amount (or the quantity of free items) is calculated in such a way that the customer cannot try to split a sales order to get a greater discount, or a larger quantity of free items.
The **Prorate discounts** option is applicable to discount sequences with discountable quantities as well as with discountable amounts.

## Example

This example concerns a prorated group-level discount defined for quantity tiers. The sequence defines the discount with the following tiers:

+ 10 units: 1 unit of the free item
+ 20 units: 2 units of the free item
+ 40 units: 3 units of the free item

To determine the discount for a discountable quantity larger than one break point, but less than the next break point, the system treats the discountable quantity as a combination of break point quantities, using the largest possible break point quantities. It then calculates the discount according to the breakpoints used.

With prorated discounts, a sales order for 50 units would yield 4 units of the free item: 3 (for 40 units) + 1 (for 10 units) = 4.
For an order of 70 units, the discount is 6 units of the free item: 3 (for 40 units) + 2 (for 20 units) + 1 (for 10 units) = 6.

<h2>Related pages</h2><h3>Concepts</h3>
<ul><li><a href="/visma-net-erp/help/customer-ledger/manage-discounts/calculate-document-level-discounts-with-tiers-defined-by-amounts/index.md">Calculate document-level discounts with tiers defined by amounts</a></li><li><a href="/visma-net-erp/help/customer-ledger/manage-discounts/calculate-line-level-discounts-for-tiers-defined-by-amounts/index.md">Calculate line-level discounts for tiers defined by amounts</a></li>
</ul>


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