November 12, 2025

Resource IDs in tax webhook summary section and calculation requests migrate to Global IDs

Tax Partner Apps now receive consistent identifiers that match Shopify's GraphQL Admin API. Starting with API version 2026-01, these apps will receive Global IDs (GIDs) for customers, products, line items, and sales agreements, aligning with Shopify's standard guidance for using Global IDs across all APIs.

This change makes the tax calculation API consistent with how partners interact with other Shopify APIs, using the same identifier format throughout the platform. Tax service providers can now use the same IDs they receive from other Shopify endpoints, eliminating the need to manage different ID formats for tax-specific integrations.