Cart refresh and add on support

Learn how to control Downpay's cart refresh and add on support.

Overview

Downpay has built-in functionality to support:

Refreshing cart subtotals to support slower loading apps
Addon products that add extra fee products to the cart to ensure deposits are calculated correctly.

This functionality is enabled by turning on the Downpay Cart theme extension within your Shopify theme editor.

Add the following code in the <head> section of theme.liquid or equivalent if you'd like to **remove this functionality **

<script>
        window.downpay = window.downpay || {};
        window.downpay.cartRefreshOn = false;
</script>

Add the following code in the <head> section of theme.liquid or equivalent if you'd like to **remove this functionality **

<script>
        window.downpay = window.downpay || {};
        window.downpay.addOnApply = false;
</script>

Updated on: 17/10/2025

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