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 341800cf..661c1394 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
@@ -14,6 +14,7 @@ data class OrderForCalculate(
 	val customerTaxExempt: Boolean? = null,
 	val customerTaxId: String? = null,
 	val reversedTaxApplied: Boolean? = null,
+	val taxAlreadyDeductedFromPrice: Boolean? = null,
 	val discountCoupon: DiscountCouponInfo? = null,
 	val items: List<OrderItem>? = null,
 	val billingPerson: PersonInfo? = 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 eab14644..e8b83e75 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
@@ -26,6 +26,7 @@ val orderForCalculateNullablePropertyRules: List<NullablePropertyRule<*, *>> = l
 	IgnoreNullable(OrderForCalculate::items),
 	AllowNullable(OrderForCalculate::paymentOptionsDetails),
 	AllowNullable(OrderForCalculate::reversedTaxApplied),
+	AllowNullable(OrderForCalculate::taxAlreadyDeductedFromPrice),
 	AllowNullable(OrderForCalculate::shippingOption),
 	IgnoreNullable(OrderForCalculate::shippingPerson),
 	AllowNullable(OrderForCalculate.CustomSurcharge::description),