diff --git a/src/FrontOffice.Main/Pages/DiscountStore/Cart.razor b/src/FrontOffice.Main/Pages/DiscountStore/Cart.razor
index 72f705b..2df1155 100644
--- a/src/FrontOffice.Main/Pages/DiscountStore/Cart.razor
+++ b/src/FrontOffice.Main/Pages/DiscountStore/Cart.razor
@@ -40,7 +40,7 @@
                             <MudTd>@FormatPrice(context.UnitPrice)</MudTd>
                             <MudTd>
                                 <MudChip T="string" Color="Color.Error" Variant="Variant.Outlined" Size="Size.Small">
-                                    تا @context.MaxDiscountPercent%
+                                    ۱۰۰٪ تخفیفی
                                 </MudChip>
                             </MudTd>
                             <MudTd>
@@ -86,7 +86,7 @@
                                         <MudText Typo="Typo.subtitle2">@item.Title</MudText>
                                     </MudStack>
                                     <MudChip T="string" Color="Color.Error" Variant="Variant.Outlined" Size="Size.Small">
-                                        تا @item.MaxDiscountPercent%
+                                        ۱۰۰٪ تخفیفی
                                     </MudChip>
                                 </MudStack>
 
diff --git a/src/FrontOffice.Main/Pages/DiscountStore/Checkout.razor b/src/FrontOffice.Main/Pages/DiscountStore/Checkout.razor
index 41b664a..647a7de 100644
--- a/src/FrontOffice.Main/Pages/DiscountStore/Checkout.razor
+++ b/src/FrontOffice.Main/Pages/DiscountStore/Checkout.razor
@@ -52,11 +52,11 @@
                 }
             </MudPaper>
 
-            <!-- Discount Balance (Hybrid Payment) -->
+            <!-- Discount Balance (Auto Applied) -->
             <MudPaper Elevation="2" Class="pa-4 rounded-lg mb-3">
                 <MudStack Row="true" Spacing="2" AlignItems="AlignItems.Center" Class="mb-3">
                     <MudIcon Icon="@Icons.Material.Filled.Loyalty" Color="Color.Secondary" />
-                    <MudText Typo="Typo.h6">پرداخت از کیف تخفیفی</MudText>
+                    <MudText Typo="Typo.h6">تخفیف کیف تخفیفی</MudText>
                 </MudStack>
 
                 <MudStack Spacing="2">
@@ -67,37 +67,35 @@
                         </MudText>
                     </MudStack>
 
-                    <MudStack Row="true" Justify="Justify.SpaceBetween" AlignItems="AlignItems.Center" Class="flex-wrap">
-                        <MudText Typo="Typo.body2">سقف مجاز تخفیف روی این سفارش:</MudText>
-                        <MudText Typo="Typo.subtitle2" Color="Color.Success">
-                            @FormatPrice(MaxAllowedDiscount) تومان
-                        </MudText>
-                    </MudStack>
-
-                    <MudDivider />
-
-                    <MudText Typo="Typo.body2" Class="mud-text-secondary">
-                        مبلغی که از کیف تخفیفی کسر شود (باقیمانده از درگاه پرداخت می‌شود):
-                    </MudText>
-
-                    <MudSlider T="long" @bind-Value="_discountBalanceToUse"
-                               Min="0" Max="@MaxUsable"
-                               Step="1000"
-                               Color="Color.Secondary"
-                               Immediate="true">
-                        استفاده از @FormatPrice(_discountBalanceToUse) تومان
-                    </MudSlider>
-
-                    <MudNumericField T="long" @bind-Value="_discountBalanceToUse"
-                                     Min="0" Max="@MaxUsable"
-                                     Label="مبلغ دلخواه (تومان)" Variant="Variant.Outlined"
-                                     Margin="Margin.Dense" Immediate="true" />
-
-                    @if (_discountBalanceToUse > 0)
+                    @if (MaxUsable > 0)
                     {
-                        <MudAlert Severity="Severity.Info" Variant="Variant.Outlined" Dense="true">
-                            مبلغ @FormatPrice(_discountBalanceToUse) تومان از کیف تخفیفی کسر و
-                            مبلغ @FormatPrice(GatewayAmount) تومان از درگاه پرداخت دریافت خواهد شد.
+                        <MudAlert Severity="Severity.Success" Variant="Variant.Outlined" Dense="true">
+                            <MudStack Row="true" Justify="Justify.SpaceBetween" AlignItems="AlignItems.Center" Class="flex-wrap">
+                                <MudText Typo="Typo.body2">مبلغ تخفیف اعمال‌شده:</MudText>
+                                <MudText Typo="Typo.subtitle1" Color="Color.Success" Class="fw-bold">
+                                    @FormatPrice(MaxUsable) تومان
+                                </MudText>
+                            </MudStack>
+                        </MudAlert>
+
+                        @if (GatewayAmount > 0)
+                        {
+                            <MudAlert Severity="Severity.Info" Variant="Variant.Outlined" Dense="true">
+                                مبلغ @FormatPrice(MaxUsable) تومان از کیف تخفیفی کسر و
+                                مبلغ @FormatPrice(GatewayAmount) تومان از درگاه پرداخت دریافت خواهد شد.
+                            </MudAlert>
+                        }
+                        else
+                        {
+                            <MudAlert Severity="Severity.Success" Variant="Variant.Outlined" Dense="true">
+                                کل مبلغ سفارش از کیف تخفیفی پرداخت خواهد شد.
+                            </MudAlert>
+                        }
+                    }
+                    else
+                    {
+                        <MudAlert Severity="Severity.Warning" Variant="Variant.Outlined" Dense="true">
+                            موجودی کیف تخفیفی شما کافی نیست. کل مبلغ از درگاه پرداخت دریافت خواهد شد.
                         </MudAlert>
                     }
                 </MudStack>
@@ -139,10 +137,7 @@
                                             <MudText Typo="Typo.caption" Class="mud-text-secondary">
                                                 @item.Quantity × @FormatPrice(item.UnitPrice)
                                             </MudText>
-                                            @if (item.MaxDiscountPercent > 0)
-                                            {
-                                                <MudText Typo="Typo.caption" Color="Color.Error">تا @item.MaxDiscountPercent% تخفیف</MudText>
-                                            }
+                                            <MudText Typo="Typo.caption" Color="Color.Error">۱۰۰٪ تخفیفی</MudText>
                                         </MudStack>
                                     </MudStack>
                                 </MudListItemText>
@@ -158,11 +153,11 @@
                             <MudText Typo="Typo.body2">@FormatPrice(DiscountCart.TotalPrice)</MudText>
                         </MudStack>
 
-                        @if (_discountBalanceToUse > 0)
+                        @if (MaxUsable > 0)
                         {
                             <MudStack Row="true" Justify="Justify.SpaceBetween">
                                 <MudText Typo="Typo.body2" Color="Color.Success">از کیف تخفیفی:</MudText>
-                                <MudText Typo="Typo.body2" Color="Color.Success">@FormatPrice(_discountBalanceToUse)-</MudText>
+                                <MudText Typo="Typo.body2" Color="Color.Success">@FormatPrice(MaxUsable)-</MudText>
                             </MudStack>
                         }
 
diff --git a/src/FrontOffice.Main/Pages/DiscountStore/Checkout.razor.cs b/src/FrontOffice.Main/Pages/DiscountStore/Checkout.razor.cs
index a7fa826..1dd0751 100644
--- a/src/FrontOffice.Main/Pages/DiscountStore/Checkout.razor.cs
+++ b/src/FrontOffice.Main/Pages/DiscountStore/Checkout.razor.cs
@@ -16,7 +16,6 @@ public partial class Checkout
     private bool _loadingAddresses;
 
     private long _discountBalance;
-    private long _discountBalanceToUse;
     private string? _notes;
     private bool _placing;
 
@@ -27,13 +26,14 @@ public partial class Checkout
 
     /// <summary>
     /// Maximum the user can actually use = min(balance, allowed discount)
+    /// Always applied at 100% — no user selection
     /// </summary>
     private long MaxUsable => Math.Min(_discountBalance, MaxAllowedDiscount);
 
     /// <summary>
-    /// Amount to be charged via payment gateway
+    /// Amount to be charged via payment gateway (total minus auto-applied discount)
     /// </summary>
-    private long GatewayAmount => DiscountCart.TotalPrice - _discountBalanceToUse;
+    private long GatewayAmount => DiscountCart.TotalPrice - MaxUsable;
 
     private bool CanPlaceOrder => DiscountCart.Items.Count > 0 && _selectedAddress is not null;
 
@@ -44,9 +44,6 @@ public partial class Checkout
         var addressTask = LoadAddresses();
         var balanceTask = LoadDiscountBalance();
         await Task.WhenAll(addressTask, balanceTask);
-
-        // Default: use maximum possible discount
-        _discountBalanceToUse = MaxUsable;
     }
 
     private async Task LoadDiscountBalance()
@@ -101,12 +98,10 @@ public partial class Checkout
         _placing = true;
         try
         {
-            // Clamp the discount balance to use
-            var discountToUse = Math.Min(_discountBalanceToUse, MaxUsable);
-
+            // Always use maximum possible discount (100%)
             var result = await DiscountOrderService.PlaceOrderAsync(
                 _selectedAddress.Id,
-                discountToUse,
+                MaxUsable,
                 _notes);
 
             if (!result.Success)
diff --git a/src/FrontOffice.Main/Pages/DiscountStore/ProductDetail.razor b/src/FrontOffice.Main/Pages/DiscountStore/ProductDetail.razor
index fcabe1d..2f031e4 100644
--- a/src/FrontOffice.Main/Pages/DiscountStore/ProductDetail.razor
+++ b/src/FrontOffice.Main/Pages/DiscountStore/ProductDetail.razor
@@ -71,15 +71,12 @@
                                     @($"{_product.Price:N0}") تومان
                                 </MudText>
                             </MudStack>
-                            @if (_product.MaxDiscountPercent > 0)
-                            {
-                                <MudStack Row="true" Justify="Justify.SpaceBetween" AlignItems="AlignItems.Center">
-                                    <MudText Typo="Typo.body2" Class="mud-text-secondary">سقف پرداخت از کیف تخفیفی:</MudText>
-                                    <MudChip T="string" Color="Color.Error" Variant="Variant.Filled" Size="Size.Small">
-                                        تا @_product.MaxDiscountPercent% (تا @($"{_product.Price * _product.MaxDiscountPercent / 100:N0}") تومان)
-                                    </MudChip>
-                                </MudStack>
-                            }
+                            <MudStack Row="true" Justify="Justify.SpaceBetween" AlignItems="AlignItems.Center">
+                                <MudText Typo="Typo.body2" Class="mud-text-secondary">قابل پرداخت از کیف تخفیفی:</MudText>
+                                <MudChip T="string" Color="Color.Error" Variant="Variant.Filled" Size="Size.Small">
+                                    ۱۰۰٪ تخفیفی (@($"{_product.Price:N0}") تومان)
+                                </MudChip>
+                            </MudStack>
                         </MudStack>
                     </MudPaper>
 
diff --git a/src/FrontOffice.Main/Pages/DiscountStore/Products.razor b/src/FrontOffice.Main/Pages/DiscountStore/Products.razor
index 7312608..4b996a1 100644
--- a/src/FrontOffice.Main/Pages/DiscountStore/Products.razor
+++ b/src/FrontOffice.Main/Pages/DiscountStore/Products.razor
@@ -93,13 +93,10 @@
                                         فقط @p.RemainingCount عدد
                                     </MudChip>
                                 }
-                                @if (p.MaxDiscountPercent > 0)
-                                {
-                                    <MudChip T="string" Color="Color.Error" Variant="Variant.Filled" Size="Size.Small"
-                                             Style="position:absolute;top:8px;left:8px;">
-                                        تا @p.MaxDiscountPercent% تخفیف
-                                    </MudChip>
-                                }
+                                <MudChip T="string" Color="Color.Error" Variant="Variant.Filled" Size="Size.Small"
+                                         Style="position:absolute;top:8px;left:8px;">
+                                    ۱۰۰٪ تخفیفی
+                                </MudChip>
                             </div>
                             <div class="pa-1 flex-grow-1 d-flex flex-column justify-space-between">
                                 <MudText Typo="Typo.subtitle1">@p.Title</MudText>