Tax Partner apps can now receive cart line properties in tax calculation requests
UpdateUnverifiedAdded Sep 24, 2026
As of API version 2026-04, tax calculation requests for Tax Partner Apps can now include cart line item properties. These properties are custom name-value pairs that merchants can add to individual line items. Merchants configure properties on individual cart line items (such as token , personalization , or gift_wrap ).
Topics: Pricing, Developer tools
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