diff --git a/lib/recurly/resources/plan.php b/lib/recurly/resources/plan.php
index 5ec290a9..0c56168c 100644
--- a/lib/recurly/resources/plan.php
+++ b/lib/recurly/resources/plan.php
@@ -43,6 +43,7 @@ class Plan extends RecurlyResource
     private $_trial_requires_billing_info;
     private $_trial_unit;
     private $_updated_at;
+    private $_vertex_transaction_type;
 
     protected static $array_hints = [
         'setCurrencies' => '\Recurly\Resources\PlanPricing',
@@ -769,4 +770,27 @@ public function setUpdatedAt(string $updated_at): void
     {
         $this->_updated_at = $updated_at;
     }
+
+    /**
+    * Getter method for the vertex_transaction_type attribute.
+    * Used by Vertex for tax calculations. Possible values are `sale`, `rental`, `lease`.
+    *
+    * @return ?string
+    */
+    public function getVertexTransactionType(): ?string
+    {
+        return $this->_vertex_transaction_type;
+    }
+
+    /**
+    * Setter method for the vertex_transaction_type attribute.
+    *
+    * @param string $vertex_transaction_type
+    *
+    * @return void
+    */
+    public function setVertexTransactionType(string $vertex_transaction_type): void
+    {
+        $this->_vertex_transaction_type = $vertex_transaction_type;
+    }
 }
\ No newline at end of file
diff --git a/openapi/api.yaml b/openapi/api.yaml
index b8cfb558..bcad8e35 100644
--- a/openapi/api.yaml
+++ b/openapi/api.yaml
@@ -21353,6 +21353,11 @@ components:
           title: Tax exempt?
           description: "`true` exempts tax on the plan, `false` applies tax on the
             plan."
+        vertex_transaction_type:
+          type: string
+          title: Vertex Transaction Type
+          description: Used by Vertex for tax calculations. Possible values are `sale`,
+            `rental`, `lease`.
         currencies:
           type: array
           title: Pricing
@@ -21568,6 +21573,11 @@ components:
           title: Tax exempt?
           description: "`true` exempts tax on the plan, `false` applies tax on the
             plan."
+        vertex_transaction_type:
+          type: string
+          title: Vertex Transaction Type
+          description: Used by Vertex for tax calculations. Possible values are `sale`,
+            `rental`, `lease`.
         currencies:
           type: array
           title: Pricing
@@ -21832,6 +21842,11 @@ components:
           title: Tax exempt?
           description: "`true` exempts tax on the plan, `false` applies tax on the
             plan."
+        vertex_transaction_type:
+          type: string
+          title: Vertex Transaction Type
+          description: Used by Vertex for tax calculations. Possible values are `sale`,
+            `rental`, `lease`.
         currencies:
           type: array
           title: Pricing