diff --git a/src/main/kotlin/com/ecwid/apiclient/v3/dto/cart/request/OrderForCalculate.kt b/src/main/kotlin/com/ecwid/apiclient/v3/dto/cart/request/OrderForCalculate.kt
index 661c1394..d3dd4efc 100644
--- a/src/main/kotlin/com/ecwid/apiclient/v3/dto/cart/request/OrderForCalculate.kt
+++ b/src/main/kotlin/com/ecwid/apiclient/v3/dto/cart/request/OrderForCalculate.kt
@@ -79,6 +79,7 @@ data class OrderForCalculate(
 
 		val price: Double? = null,
 		val productPrice: Double? = null,
+		val taxAlreadyDeductedFromPrice: Boolean? = null,
 		val needCalculateWholesalePrice: Boolean? = null,
 		val isCustomerSetPrice: Boolean? = null,
 		val selectedPrice: SelectedPrice? = null,
diff --git a/src/test/kotlin/com/ecwid/apiclient/v3/rule/nullablepropertyrules/OrderForCalculateRules.kt b/src/test/kotlin/com/ecwid/apiclient/v3/rule/nullablepropertyrules/OrderForCalculateRules.kt
index e8b83e75..3a6e1a3e 100644
--- a/src/test/kotlin/com/ecwid/apiclient/v3/rule/nullablepropertyrules/OrderForCalculateRules.kt
+++ b/src/test/kotlin/com/ecwid/apiclient/v3/rule/nullablepropertyrules/OrderForCalculateRules.kt
@@ -77,6 +77,7 @@ val orderForCalculateNullablePropertyRules: List<NullablePropertyRule<*, *>> = l
 	IgnoreNullable(OrderForCalculate.OrderItem::imageUrl),
 	IgnoreNullable(OrderForCalculate.OrderItem::isShippingRequired),
 	IgnoreNullable(OrderForCalculate.OrderItem::name),
+	AllowNullable(OrderForCalculate.OrderItem::taxAlreadyDeductedFromPrice),
 	AllowNullable(OrderForCalculate.OrderItem::needCalculateWholesalePrice),
 	IgnoreNullable(OrderForCalculate.OrderItem::price),
 	IgnoreNullable(OrderForCalculate.OrderItem::productId),