Why Does a Discount Apply for an Exchange of the Same Item?

💡 Tip: Since it creates a new order, Shopify automatically calculates taxes again — even for the same product exchange. To avoid charging the customer again, we apply a discount equal to the tax amount on the exchange order.

In Shopify's system, an exchange is treated as two separate actions:

A return of the original item.
A new order for the replacement item.

Summary:

Exchanges = new orders in Shopify → taxes are calculated again.
We use a discount to offset the tax, so the customer doesn't pay.
Merchants do not need to process any refunds.

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Updated on: 16/06/2026

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