- Introduced CalculatedReturnShippingFee.taxAmountSet and ReturnShippingFee.finalizedTaxAmountSet fields in the GraphQL Admin API to expose estimated and finalized tax on return shipping fees.
- taxAmountSet is available on the returnCalculate query (zero if no tax), while finalizedTaxAmountSet is set after return processing (null until then, zero if no tax).
- Allows merchants to show estimated tax during return creation and reconcile the actual tax charged, applicable to US orders using Shopify Tax.