diff --git a/internal/logic/public/order/getDiscount.go b/internal/logic/public/order/getDiscount.go
index af21ced..ee7dd4e 100644
--- a/internal/logic/public/order/getDiscount.go
+++ b/internal/logic/public/order/getDiscount.go
@@ -3,32 +3,26 @@ package order
 import "github.com/perfect-panel/server/internal/types"
 
 func getDiscount(discounts []types.SubscribeDiscount, inputMonths int64, isNewUser bool) float64 {
-	var finalDiscount float64 = 100
-
 	for _, discount := range discounts {
 		if discount.NewUserOnly && !isNewUser {
 			continue
 		}
-		if inputMonths >= discount.Quantity && discount.Discount < finalDiscount {
-			finalDiscount = discount.Discount
+		if inputMonths == discount.Quantity && discount.Discount > 0 && discount.Discount < 100 {
+			return discount.Discount / float64(100)
 		}
 	}
 
-	return finalDiscount / float64(100)
+	return 1
 }
 
 // isNewUserOnlyForQuantity checks whether the matched discount tier has new_user_only enabled.
 func isNewUserOnlyForQuantity(discounts []types.SubscribeDiscount, inputQuantity int64) bool {
-	var finalDiscount float64 = 100
-	var newUserOnly bool
-
 	for _, discount := range discounts {
-		if inputQuantity >= discount.Quantity && discount.Discount < finalDiscount {
-			finalDiscount = discount.Discount
-			newUserOnly = discount.NewUserOnly
+		if inputQuantity == discount.Quantity {
+			return discount.NewUserOnly
 		}
 	}
 
-	return newUserOnly
+	return false
 }
 
diff --git a/internal/logic/public/portal/tool.go b/internal/logic/public/portal/tool.go
index 2fa92b6..939b599 100644
--- a/internal/logic/public/portal/tool.go
+++ b/internal/logic/public/portal/tool.go
@@ -7,17 +7,15 @@ import (
 )
 
 func getDiscount(discounts []types.SubscribeDiscount, inputMonths int64, isNewUser bool) float64 {
-	var finalDiscount float64 = 100
-
 	for _, discount := range discounts {
 		if discount.NewUserOnly && !isNewUser {
 			continue
 		}
-		if inputMonths >= discount.Quantity && discount.Discount < finalDiscount {
-			finalDiscount = discount.Discount
+		if inputMonths == discount.Quantity && discount.Discount > 0 && discount.Discount < 100 {
+			return discount.Discount / float64(100)
 		}
 	}
-	return finalDiscount / float64(100)
+	return 1
 }
 
 func calculateCoupon(amount int64, couponInfo *coupon.Coupon) int64 {
diff --git a/queue/logic/order/activateOrderLogic.go b/queue/logic/order/activateOrderLogic.go
index f2fdad6..ad4fe05 100644
--- a/queue/logic/order/activateOrderLogic.go
+++ b/queue/logic/order/activateOrderLogic.go
@@ -1479,15 +1479,11 @@ func (l *ActivateOrderLogic) RedemptionActivate(ctx context.Context, orderInfo *
 
 // isNewUserOnlyForQuantity checks whether the matched discount tier has new_user_only enabled.
 func isNewUserOnlyForQuantity(discounts []internaltypes.SubscribeDiscount, inputQuantity int64) bool {
-	var finalDiscount float64 = 100
-	var newUserOnly bool
-
 	for _, d := range discounts {
-		if inputQuantity >= d.Quantity && d.Discount < finalDiscount {
-			finalDiscount = d.Discount
-			newUserOnly = d.NewUserOnly
+		if inputQuantity == d.Quantity {
+			return d.NewUserOnly
 		}
 	}
 
-	return newUserOnly
+	return false
 }