diff --git a/app/Http/Controllers/Sales/SalesProductController.php b/app/Http/Controllers/Sales/SalesProductController.php
index 020f668c..be331146 100644
--- a/app/Http/Controllers/Sales/SalesProductController.php
+++ b/app/Http/Controllers/Sales/SalesProductController.php
@@ -60,6 +60,7 @@ public function store(Request $request): JsonResponse
             'name' => 'required|string|max:100',
             'description' => 'nullable|string',
             'development_fee' => 'required|numeric|min:0',
+            'registration_fee' => 'required|numeric|min:0',
             'subscription_fee' => 'required|numeric|min:0',
             'partner_commission_rate' => 'nullable|numeric|min:0|max:100',
             'manager_commission_rate' => 'nullable|numeric|min:0|max:100',
@@ -105,6 +106,7 @@ public function update(Request $request, int $id): JsonResponse
             'name' => 'sometimes|string|max:100',
             'description' => 'nullable|string',
             'development_fee' => 'sometimes|numeric|min:0',
+            'registration_fee' => 'sometimes|numeric|min:0',
             'subscription_fee' => 'sometimes|numeric|min:0',
             'partner_commission_rate' => 'nullable|numeric|min:0|max:100',
             'manager_commission_rate' => 'nullable|numeric|min:0|max:100',
diff --git a/app/Models/Sales/SalesProduct.php b/app/Models/Sales/SalesProduct.php
index f672af04..4e8643bd 100644
--- a/app/Models/Sales/SalesProduct.php
+++ b/app/Models/Sales/SalesProduct.php
@@ -15,6 +15,7 @@
  * @property string $name
  * @property string|null $description
  * @property float $development_fee
+ * @property float $registration_fee
  * @property float $subscription_fee
  * @property float $partner_commission_rate
  * @property float $manager_commission_rate
@@ -35,6 +36,7 @@ class SalesProduct extends Model
         'name',
         'description',
         'development_fee',
+        'registration_fee',
         'subscription_fee',
         'partner_commission_rate',
         'manager_commission_rate',
@@ -47,6 +49,7 @@ class SalesProduct extends Model
     protected $casts = [
         'category_id' => 'integer',
         'development_fee' => 'decimal:2',
+        'registration_fee' => 'decimal:2',
         'subscription_fee' => 'decimal:2',
         'partner_commission_rate' => 'decimal:2',
         'manager_commission_rate' => 'decimal:2',
@@ -104,6 +107,14 @@ public function getFormattedDevelopmentFeeAttribute(): string
         return '₩' . number_format($this->development_fee);
     }
 
+    /**
+     * 포맷된 가입비
+     */
+    public function getFormattedRegistrationFeeAttribute(): string
+    {
+        return '₩' . number_format($this->registration_fee);
+    }
+
     /**
      * 포맷된 구독료
      */
diff --git a/resources/views/sales/products/index.blade.php b/resources/views/sales/products/index.blade.php
index cd25f709..8d4c7eef 100644
--- a/resources/views/sales/products/index.blade.php
+++ b/resources/views/sales/products/index.blade.php
@@ -117,22 +117,31 @@ class="w-full px-3 py-2 border border-gray-300 rounded-lg focus:ring-2 focus:rin
                         </div>
                         <div class="grid grid-cols-2 gap-4">
                             <div>
-                                <label class="block text-sm font-medium text-gray-700 mb-1">개발비 (가입비)</label>
+                                <label class="block text-sm font-medium text-gray-700 mb-1">개발비 (원가)</label>
                                 <input type="text"
                                        :value="formatNumber(productForm.development_fee)"
-                                       x-on:input="productForm.development_fee = parseNumber($event.target.value); $event.target.value = formatNumber(productForm.development_fee)"
+                                       x-on:input="updateDevelopmentFee($event.target.value)"
                                        class="w-full px-3 py-2 border border-gray-300 rounded-lg focus:ring-2 focus:ring-indigo-500 text-right"
                                        placeholder="0" required>
                             </div>
                             <div>
-                                <label class="block text-sm font-medium text-gray-700 mb-1">월 구독료</label>
+                                <label class="block text-sm font-medium text-gray-700 mb-1">가입비 (할인가)</label>
                                 <input type="text"
-                                       :value="formatNumber(productForm.subscription_fee)"
-                                       x-on:input="productForm.subscription_fee = parseNumber($event.target.value); $event.target.value = formatNumber(productForm.subscription_fee)"
-                                       class="w-full px-3 py-2 border border-gray-300 rounded-lg focus:ring-2 focus:ring-indigo-500 text-right"
+                                       :value="formatNumber(productForm.registration_fee)"
+                                       x-on:input="productForm.registration_fee = parseNumber($event.target.value); $event.target.value = formatNumber(productForm.registration_fee)"
+                                       class="w-full px-3 py-2 border border-gray-300 rounded-lg focus:ring-2 focus:ring-indigo-500 text-right bg-indigo-50"
                                        placeholder="0" required>
+                                <p class="text-xs text-gray-500 mt-1">기본: 개발비의 25%</p>
                             </div>
                         </div>
+                        <div>
+                            <label class="block text-sm font-medium text-gray-700 mb-1">월 구독료</label>
+                            <input type="text"
+                                   :value="formatNumber(productForm.subscription_fee)"
+                                   x-on:input="productForm.subscription_fee = parseNumber($event.target.value); $event.target.value = formatNumber(productForm.subscription_fee)"
+                                   class="w-full px-3 py-2 border border-gray-300 rounded-lg focus:ring-2 focus:ring-indigo-500 text-right"
+                                   placeholder="0" required>
+                        </div>
                         <div class="grid grid-cols-2 gap-4">
                             <div>
                                 <label class="block text-sm font-medium text-gray-700 mb-1">영업파트너 수당 (%)</label>
@@ -245,6 +254,7 @@ function productManager() {
             name: '',
             description: '',
             development_fee: 0,
+            registration_fee: 0,
             subscription_fee: 0,
             partner_commission_rate: 20,
             manager_commission_rate: 5,
@@ -280,6 +290,7 @@ function productManager() {
                     name: '',
                     description: '',
                     development_fee: 0,
+                    registration_fee: 0,
                     subscription_fee: 0,
                     partner_commission_rate: 20,
                     manager_commission_rate: 5,
@@ -392,6 +403,13 @@ function productManager() {
         parseNumber(value) {
             if (!value) return 0;
             return parseInt(String(value).replace(/[^\d]/g, ''), 10) || 0;
+        },
+
+        updateDevelopmentFee(value) {
+            const fee = this.parseNumber(value);
+            this.productForm.development_fee = fee;
+            // 가입비 자동 계산 (개발비의 25%)
+            this.productForm.registration_fee = Math.floor(fee * 0.25);
         }
     };
 }
diff --git a/resources/views/sales/products/partials/product-list.blade.php b/resources/views/sales/products/partials/product-list.blade.php
index 8e5863b6..7477e397 100644
--- a/resources/views/sales/products/partials/product-list.blade.php
+++ b/resources/views/sales/products/partials/product-list.blade.php
@@ -34,8 +34,8 @@ class="p-1 text-gray-400 hover:text-indigo-600 transition-colors">
                 <div class="flex items-center justify-between">
                     <span class="text-sm text-gray-500">가입비</span>
                     <div class="text-right">
-                        <span class="text-sm text-gray-400 line-through">₩{{ number_format($product->development_fee) }}</span>
-                        <span class="ml-2 font-bold text-indigo-600">₩{{ number_format($product->development_fee * 0.25) }}</span>
+                        <span class="text-sm text-gray-400 line-through">{{ $product->formatted_development_fee }}</span>
+                        <span class="ml-2 font-bold text-indigo-600">{{ $product->formatted_registration_fee }}</span>
                     </div>
                 </div>
                 <div class="flex items-center justify-between">