diff --git a/Tax Exempt Quick Reference Guide.md b/Tax Exempt Quick Reference Guide.md
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+# Tax Exempt Quick Reference Guide
+When a vendor is launched in a tax-exempt eligible market, the ClassWallet team will need to enable their vendor account to begin receiving the tax status of users when a shopper starts a session from the ClassWallet Marketplace.
+
+### Plugin Vendors (Shopify, WooCommerce, Magento, BigCommerce)
+
+No action needed by plugin vendors. The plugins we have developed are listening for these tax-exempt flags and will action the order to be created without tax if tax-exempt user status is detected.
+
+---
+
+### API Vendors
+
+Once enabled, we will begin sending a tax-exempt property in the JSON payload to your start URL to indicate the tax status of the user:
+
+```json
+"taxExempt": true
+
+```
+
+```json
+"taxExempt": false
+
+```
+
+This should be parsed from the payload and used to create the order without tax if the user is `"taxExempt": true`.
+
+> **Note:** Full payload examples are available in the API docs: [`PayByAPI.md`](https://github.com/devinlejeune-cw/classwallet-docs/blob/main/PayByAPI.md)
+
+---
+
+### cXML Vendors
+
+Once enabled, we will include an `Extrinsic` tag in the `PunchOutSetupRequest`, as well as an `Extrinsic` tag with the Order Request in the `OrderRequestHeader` containing the tax status of the user:
+
+```xml
+false
+
+```
+
+```xml
+true
+
+```
+
+These tags should be identified and used accordingly to create the order without taxes when `true` is detected.
+
+> **Note:** Full document examples are provided in the cXML docs: [`cXML.md`](https://github.com/devinlejeune-cw/classwallet-docs/blob/main/cXML.md)
diff --git a/cXML.md b/cXML.md
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--- a/cXML.md
+++ b/cXML.md
@@ -444,6 +444,7 @@ Fernandez">vendorinvoices@classwallet.com
+ false