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Checkout Add-ons are optional products customers can add during the main checkout flow.
Find this module in Shopify Stores > Edit Checkout > Offers.

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How it works

Use add-ons for simple, low-friction offers that belong inside checkout. Use Upsell Offers for post-purchase offers shown after the initial order.

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Settings reference

You will set: Product listThe products offered during checkout. The editor supports up to four add-ons and shows them in order.
You will set: Shopify product pickerThe Shopify product offered as the add-on.
You will set: Variant pickerThe specific Shopify variant customers receive when they select the add-on.
You will set: Number fieldHow many units are added when the customer selects the add-on.
You will set: Text fieldThe add-on name shown to customers. You can use the Shopify product name or a shorter checkout-friendly name.
You will set: Text fieldShort supporting copy for the add-on.
You will set: Synced product valueThe price shown for the add-on.
You will set: Synced product valueThe product image shown with the add-on.
You will set: Discount fieldOptional discount shown for the add-on.
You will set: On/off switchWhether the add-on starts selected when the customer reaches checkout.
You will set: On/off switchWhether customers can remove the add-on after it appears.
You will set: On/off switchWhether the add-on appears in the cart summary.

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Examples

Offer a protection plan with quantity 1, visible in cart, and removable.

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Before saving

  • Confirm selected products and variants are synced from Shopify.
  • Keep add-on names and descriptions short.
  • Test selected-by-default and removable behavior before launch.

Bundle Discounts

Configure automatic BOGO, quantity, percent, fixed, product, and store-wide rules.

Discount Codes

Create manual checkout discount codes and percent values.

Upsell Offers

Build post-purchase offers shown after checkout.