diff --git a/account.go b/account.go
index 59a114d..494c3f9 100644
--- a/account.go
+++ b/account.go
@@ -111,6 +111,9 @@ type Account struct {
 
 	// The custom fields will only be altered when they are included in a request. Sending an empty array will not remove any existing values. To remove a field send the name with a null or empty value.
 	CustomFields []CustomField `json:"custom_fields,omitempty"`
+
+	// The Avalara AvaTax value that can be passed to identify the customer type for tax purposes. The range of values can be A - R (more info at Avalara). Value is case-sensitive.
+	EntityUseCode string `json:"entity_use_code,omitempty"`
 }
 
 // GetResponse returns the ResponseMetadata that generated this resource
diff --git a/account_create.go b/account_create.go
index f099e2f..1da1da4 100644
--- a/account_create.go
+++ b/account_create.go
@@ -75,4 +75,7 @@ type AccountCreate struct {
 
 	// The custom fields will only be altered when they are included in a request. Sending an empty array will not remove any existing values. To remove a field send the name with a null or empty value.
 	CustomFields []CustomFieldCreate `json:"custom_fields,omitempty"`
+
+	// The Avalara AvaTax value that can be passed to identify the customer type for tax purposes. The range of values can be A - R (more info at Avalara). Value is case-sensitive.
+	EntityUseCode *string `json:"entity_use_code,omitempty"`
 }
diff --git a/account_purchase.go b/account_purchase.go
index b1adbdf..3341726 100644
--- a/account_purchase.go
+++ b/account_purchase.go
@@ -73,4 +73,7 @@ type AccountPurchase struct {
 
 	// The custom fields will only be altered when they are included in a request. Sending an empty array will not remove any existing values. To remove a field send the name with a null or empty value.
 	CustomFields []CustomFieldCreate `json:"custom_fields,omitempty"`
+
+	// The Avalara AvaTax value that can be passed to identify the customer type for tax purposes. The range of values can be A - R (more info at Avalara). Value is case-sensitive.
+	EntityUseCode *string `json:"entity_use_code,omitempty"`
 }
diff --git a/account_update.go b/account_update.go
index a15c0dc..00d959f 100644
--- a/account_update.go
+++ b/account_update.go
@@ -65,4 +65,7 @@ type AccountUpdate struct {
 
 	// The custom fields will only be altered when they are included in a request. Sending an empty array will not remove any existing values. To remove a field send the name with a null or empty value.
 	CustomFields []CustomFieldCreate `json:"custom_fields,omitempty"`
+
+	// The Avalara AvaTax value that can be passed to identify the customer type for tax purposes. The range of values can be A - R (more info at Avalara). Value is case-sensitive.
+	EntityUseCode *string `json:"entity_use_code,omitempty"`
 }
diff --git a/openapi/api.yaml b/openapi/api.yaml
index 73b3d73..08c63a4 100644
--- a/openapi/api.yaml
+++ b/openapi/api.yaml
@@ -17474,6 +17474,11 @@ components:
           "$ref": "#/components/schemas/BillingInfoCreate"
         custom_fields:
           "$ref": "#/components/schemas/CustomFields"
+        entity_use_code:
+          type: string
+          description: The Avalara AvaTax value that can be passed to identify the
+            customer type for tax purposes. The range of values can be A - R (more
+            info at Avalara). Value is case-sensitive.
     AccountResponse:
       type: object
       properties:
@@ -17575,6 +17580,11 @@ components:
           "$ref": "#/components/schemas/BillingInfo"
         custom_fields:
           "$ref": "#/components/schemas/CustomFields"
+        entity_use_code:
+          type: string
+          description: The Avalara AvaTax value that can be passed to identify the
+            customer type for tax purposes. The range of values can be A - R (more
+            info at Avalara). Value is case-sensitive.
     AccountNote:
       type: object
       required: