diff --git a/models/Payment.php b/models/Payment.php
index df39e9b..62d79ff 100755
--- a/models/Payment.php
+++ b/models/Payment.php
@@ -51,6 +51,23 @@ class Payment {
         return round($monto_base, 2);
     }
 
+    public static function getExpectedAmountWithDiscount($house, $year, $month) {
+        $db = Database::getInstance();
+        
+        $bill = $db->fetchOne(
+            "SELECT * FROM monthly_bills WHERE year = ? AND month = ?",
+            [$year, $month]
+        );
+
+        if (!$bill) {
+            return 0;
+        }
+
+        $monto_base = $bill['amount_per_house'];
+
+        return round($monto_base, 2);
+    }
+
     public static function update($houseId, $year, $month, $amount, $userId, $notes = null, $paymentMethod = null) {
         $db = Database::getInstance();
 
diff --git a/views/payments/index.php b/views/payments/index.php
index 9f9113a..ac8629c 100755
--- a/views/payments/index.php
+++ b/views/payments/index.php
@@ -68,6 +68,7 @@
             foreach ($houses as $house):
                 $total = 0;
                 $totalExpected = 0;
+                $totalExpectedOriginal = 0;
             ?>
                 <tr data-house-id="<?= $house['id'] ?>" data-house-number="<?= $house['number'] ?>" data-status="<?= $house['status'] ?>">
                     <td><strong><?= $house['number'] ?></strong></td>
@@ -85,8 +86,10 @@
                         $monthTotals[$month] += $amount; // Accumulate monthly total
 
                         $expected = Payment::getExpectedAmount($house, $year, $month);
+                        $expectedOriginal = Payment::getExpectedAmountWithDiscount($house, $year, $month);
                         $total += $amount;
                         $totalExpected += $expected;
+                        $totalExpectedOriginal += $expectedOriginal;
 
                         $cellClass = 'pending';
                         $cellText = '-';
@@ -124,7 +127,7 @@
                         </td>
                     <?php endforeach; ?>
                     <?php
-                        $difference = $total - $totalExpected;
+                        $difference = $total - $totalExpectedOriginal;
                         $diffClass = $difference < 0 ? 'text-danger' : 'text-success';
                         $diffText = $difference == 0 ? '$0.00' : '$' . number_format($difference, 2);
                         $grandTotal += $total;
@@ -200,6 +203,7 @@
             <?php foreach ($houses as $house):
                 $total = 0;
                 $totalExpected = 0;
+                $totalExpectedOriginal = 0;
             ?>
                 <tr>
                     <td><strong><?= $house['number'] ?></strong></td>
@@ -208,8 +212,10 @@
                         $payment = $payments[$month][$house['id']] ?? null;
                         $amount = $payment['amount'] ?? 0;
                         $expected = Payment::getExpectedAmount($house, $year, $month);
+                        $expectedOriginal = Payment::getExpectedAmountWithDiscount($house, $year, $month);
                         $total += $amount;
                         $totalExpected += $expected;
+                        $totalExpectedOriginal += $expectedOriginal;
 
                         $bg = '#f8d7da';
                         if ($amount > 0) {
@@ -223,7 +229,7 @@
                         </td>
                     <?php endforeach; ?>
                     <?php
-                        $difference = $total - $totalExpected;
+                        $difference = $total - $totalExpectedOriginal;
                         $diffColor = $difference < 0 ? 'red' : 'green';
                         $diffText = $difference == 0 ? '$0.00' : '$' . number_format($difference, 2);
                     ?>
diff --git a/views/payments/pdf_template.php b/views/payments/pdf_template.php
index 5a1a6e3..c547ca2 100755
--- a/views/payments/pdf_template.php
+++ b/views/payments/pdf_template.php
@@ -58,6 +58,7 @@
         foreach ($houses as $house):
             $total = 0;
             $totalExpected = 0;
+            $totalExpectedOriginal = 0;
         ?>
             <tr>
                 <td><strong><?= $house['number'] ?></strong></td>
@@ -68,8 +69,10 @@
                     $monthTotals[$month] += $amount;
 
                     $expected = Payment::getExpectedAmount($house, $year, $month);
+                    $expectedOriginal = Payment::getExpectedAmountWithDiscount($house, $year, $month);
                     $total += $amount;
                     $totalExpected += $expected;
+                    $totalExpectedOriginal += $expectedOriginal;
 
                     $bg_color = '#FFFFFF'; // Default white
                     if ($house['status'] == 'deshabitada') {
@@ -89,7 +92,7 @@
                     </td>
                 <?php endforeach; ?>
                 <?php
-                    $difference = $total - $totalExpected;
+                    $difference = $total - $totalExpectedOriginal;
                     $diffColor = $difference < 0 ? 'red' : 'green';
                     $diffText = $difference == 0 ? '$0.00' : '$' . number_format($difference, 2);
                     $grandTotal += $total;