---
title: "Web Pixels API: event.data.checkout.subtotalPrice.amount value change on the new /thank-you page and checkout events - Shopify developer changelog"
description: Shopify’s developer changelog documents all changes to Shopify’s platform. Find the latest news and learn about new platform opportunities.
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---

[Back to Developer changelog](https://shopify.dev/changelog)

April 30, 2025

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* API

# Web Pixels API: `event.data.checkout.subtotalPrice.amount` value change on the new `/thank-you` page and checkout events

The `event.data.checkout.subtotalPrice.amount` value in the [Web Pixels API](https://shopify.dev/docs/api/web-pixels-api/standard-events/checkout_completed#properties-propertydetail-data) has been updated.

Previously, this value included the sum of all line item prices and product-level discounts, but not order-level discounts. Now, `event.data.checkout.subtotalPrice.amount` reflects the sum of all line item prices after applying both product and order-level discounts. This update aligns the definition with the `event.data.checkout.subtotalPrice.amount` field on the old `/thank_you` page.

The `event.data.checkout.subtotalPrice.amount` changes will affect the following events:

* `checkout_completed` (on the new `/thank-you` page only)
* `checkout_started`
* `checkout_address_info_submitted`
* `checkout_shipping_info_submitted`
* `checkout_contact_info_submitted`
* `payment_info_submitted`

If you use any of the above events, you should ensure that your pixel expects both product and order-level discounts to be included in this field.