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Checkout Extensions: Order Summary & Shipping Line Breakdowns

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Written by Guido Kaspers
Updated over 2 weeks ago

⚠️ Important

The current Tax Breakdown in Shopify Checkout extension will be deprecated on 31 December 2025.


Overview

Swap Global offers two checkout extensions for Shopify Plus that make duties, taxes, and shipping costs fully transparent to customers:

  • Order Summary Breakdown – displays a clear breakdown of duties, taxes, and fees in the order summary, with optional reassurance messaging.

  • Shipping Line Breakdown – shows duties, taxes, and fees directly beneath each shipping option.

Together, these extensions reassure customers that there are no surprise charges on delivery, reducing cart abandonment and improving checkout trust.

⚠ Only Available for Shopify Plus stores.


Key Features

Order Summary Breakdown Extension

The extension integrates directly into the Order Summary section of Shopify Checkout.

Order Summary Breakdown

When enabled, a detailed breakdown will appear in the order summary section. You can:

  • Add a custom banner title and description.

  • Choose an icon style for the banner (info, warning, success, etc.).

  • Make the order summary description collapsible for a cleaner checkout view.

  • Add optional info text to display below the summary.

Alert Banner

Add a banner above the checkout flow to communicate important messages such as:

  • Delivery warnings

  • Incorrect address reminders

  • Market-specific alerts

  • Trust reassurance (e.g. No surprise fees at delivery)

Configuration

In the Shopify Checkout Editor, you can:

  • Toggle the extension on or off.

  • Add custom messaging.

  • Make the summary collapsible.

Example

In this example, customers see:

  • A reassurance message confirming that all charges are included upfront. This is customisable.

  • Taxes (€70.52)

  • Duties & Fees (€35.43)

  • Shipping (€10.00)

Shipping Line Breakdown Extension

When enabled, this extension displays duties and taxes directly beneath the selected shipping line. You can:

  • Show duties, taxes, and fees for each shipping method with reassurance messaging.

Configuration

In the Shopify Checkout Editor, you can:

  • Toggle the extension on or off.

Example

Here, customers selecting UPS Standard see:

  • Shipping cost (€10.00)

  • Taxes (€70.52)

  • Duties & Fees (€35.43)

  • A reassurance message confirming the total landed cost, with no extra customs charges on delivery.

How to Add Checkout Extensions

  1. In your Shopify Admin, go to Settings → Checkout.

  2. Under Checkout configuration, click Customize.

  3. In the Checkout Editor, open the Order Summary section.

  4. Click Add App Block and select Order Summary Breakdown or Shipping Line Breakdown.

  5. Save your changes in the top-right corner.

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