diff --git a/admin/edit_client.php b/admin/edit_client.php
index 688e511..9ab6b7d 100644
--- a/admin/edit_client.php
+++ b/admin/edit_client.php
@@ -116,6 +116,7 @@ if ($_SERVER['REQUEST_METHOD'] === 'POST') {
         $address = $_POST['address'] ?? '';
         $city = $_POST['city'] ?? '';
         $zip_code = $_POST['zip_code'] ?? '';
+        $language = $_POST['language'] ?? 'pl';
 
         if (empty($name)) {
             $errorMessage = 'Nazwa klienta jest wymagana.';
@@ -123,36 +124,39 @@ if ($_SERVER['REQUEST_METHOD'] === 'POST') {
             try {
                 if ($isNewClient) {
                     $credit_limit = (isset($_SESSION['user_role']) && $_SESSION['user_role'] === 'admin') ? ($_POST['credit_limit'] ?? 0) : 0;
-                    $stmt = $db->prepare("INSERT INTO clients (name, nip, street, city, postal_code, credit_limit, credit_balance) VALUES (:name, :tax_id, :address, :city, :zip_code, :credit_limit, :credit_limit)");
+                    $stmt = $db->prepare("INSERT INTO clients (name, nip, street, city, postal_code, language, credit_limit, credit_balance) VALUES (:name, :tax_id, :address, :city, :zip_code, :language, :credit_limit, :credit_limit)");
                     $params = [
                         'name' => $name,
                         'tax_id' => $tax_id,
                         'address' => $address,
                         'city' => $city,
                         'zip_code' => $zip_code,
+                        'language' => $language,
                         'credit_limit' => $credit_limit
                     ];
                 } else {
                     if (isset($_SESSION['user_role']) && $_SESSION['user_role'] === 'admin') {
                         $credit_limit = $_POST['credit_limit'] ?? $client['credit_limit'];
-                        $stmt = $db->prepare("UPDATE clients SET name = :name, nip = :tax_id, street = :address, city = :city, postal_code = :zip_code, credit_limit = :credit_limit WHERE id = :id");
+                        $stmt = $db->prepare("UPDATE clients SET name = :name, nip = :tax_id, street = :address, city = :city, postal_code = :zip_code, language = :language, credit_limit = :credit_limit WHERE id = :id");
                         $params = [
                             'name' => $name,
                             'tax_id' => $tax_id,
                             'address' => $address,
                             'city' => $city,
                             'zip_code' => $zip_code,
+                            'language' => $language,
                             'credit_limit' => $credit_limit,
                             'id' => $clientId
                         ];
                     } else {
-                        $stmt = $db->prepare("UPDATE clients SET name = :name, nip = :tax_id, street = :address, city = :city, postal_code = :zip_code WHERE id = :id");
+                        $stmt = $db->prepare("UPDATE clients SET name = :name, nip = :tax_id, street = :address, city = :city, postal_code = :zip_code, language = :language WHERE id = :id");
                         $params = [
                             'name' => $name,
                             'tax_id' => $tax_id,
                             'address' => $address,
                             'city' => $city,
                             'zip_code' => $zip_code,
+                            'language' => $language,
                             'id' => $clientId
                         ];
                     }
@@ -218,6 +222,13 @@ $page_title = $pageTitle;
                     <label for="city" class="form-label">Miasto</label>
                     <input type="text" class="form-control" id="city" name="city" value="<?php echo htmlspecialchars($client['city'] ?? ''); ?>">
                 </div>
+                <div class="mb-3">
+                    <label for="language" class="form-label">Język</label>
+                    <select class="form-control" id="language" name="language">
+                        <option value="pl" <?php echo (($client['language'] ?? 'pl') === 'pl') ? 'selected' : ''; ?>>Polski</option>
+                        <option value="en" <?php echo (($client['language'] ?? '') === 'en') ? 'selected' : ''; ?>>Angielski</option>
+                    </select>
+                </div>
                 <?php if (isset($_SESSION['user_role']) && $_SESSION['user_role'] === 'admin'): ?>
                 <div class="mb-3">
                     <label for="credit_limit" class="form-label">Limit kredytu kupieckiego</label>
diff --git a/cart.php b/cart.php
index 11dbcab..8a1d0f3 100644
--- a/cart.php
+++ b/cart.php
@@ -22,6 +22,8 @@ if (!empty($cart)) {
         $stmt->execute($product_ids);
         $products = $stmt->fetchAll(PDO::FETCH_ASSOC);
 
+        $lang = $_SESSION['lang'] ?? 'pl';
+
         foreach ($products as $product) {
             $quantity = $cart[$product['id']];
             
@@ -29,7 +31,7 @@ if (!empty($cart)) {
             $price_net = $price_info['net'];
             $price_gross = $price_info['gross'];
 
-            $line_total_gross = $price_gross * $quantity;
+            $line_total = ($lang === 'en') ? ($price_net * $quantity) : ($price_gross * $quantity);
 
             $cart_products[] = [
                 'id' => $product['id'],
@@ -37,10 +39,10 @@ if (!empty($cart)) {
                 'price_net' => $price_net,
                 'price_gross' => $price_gross,
                 'quantity' => $quantity,
-                'line_total' => $line_total_gross,
+                'line_total' => $line_total,
             ];
             
-            $total_price += $line_total_gross;
+            $total_price += $line_total;
         }
     } catch (PDOException $e) {
         die(t('db_connection_error') . $e->getMessage());
@@ -102,7 +104,7 @@ $user_role = get_user_role();
                 </tbody>
                 <tfoot>
                     <tr>
-                        <td colspan="4" class="text-end"><strong><?= t('total_gross_label') ?></strong></td>
+                        <td colspan="4" class="text-end"><strong><?= ($lang === 'en') ? t('total_net_label') : t('total_gross_label') ?></strong></td>
                         <td colspan="2"><strong><?= format_money($total_price, $_SESSION['lang'] ?? 'pl', $pdo) ?></strong></td>
                     </tr>
                 </tfoot>
diff --git a/checkout.php b/checkout.php
index 3352739..795730e 100644
--- a/checkout.php
+++ b/checkout.php
@@ -31,7 +31,9 @@ if (!empty($cart)) {
         $stmt->execute($product_ids);
         $products = $stmt->fetchAll(PDO::FETCH_ASSOC);
 
+        $lang = $_SESSION['lang'] ?? 'pl';
         $is_supplier_delivery = false;
+
         foreach ($products as $product) {
             $quantity = $cart[$product['id']];
 
@@ -39,7 +41,8 @@ if (!empty($cart)) {
             $price_net = $price_info['net'];
             $price_gross = $price_info['gross'];
 
-            $line_total = $price_gross * $quantity;
+            $line_total = ($lang === 'en') ? ($price_net * $quantity) : ($price_gross * $quantity);
+            
             $cart_products[] = [
                 'id' => $product['id'],
                 'name' => $product['name'],
@@ -87,7 +90,7 @@ require_once __DIR__ . '/includes/header.php';
                                 <th><?= t('quantity') ?></th>
                                 <th><?= t('price_net') ?></th>
                                 <th><?= t('price_gross') ?></th>
-                                <th><?= t('total_gross') ?></th>
+                                <th><?= ($lang === 'en') ? t('total_net') : t('total_gross') ?></th>
                             </tr>
                         </thead>
                         <tbody>
@@ -103,7 +106,7 @@ require_once __DIR__ . '/includes/header.php';
                         </tbody>
                         <tfoot>
                             <tr>
-                                <td colspan="4" class="text-end"><strong><?= t('total_gross') ?>:</strong></td>
+                                <td colspan="4" class="text-end"><strong><?= ($lang === 'en') ? t('total_net') : t('total_gross') ?>:</strong></td>
                                 <td><strong><?= format_money($total_price, $_SESSION['lang'] ?? 'pl', $pdo) ?></strong></td>
                             </tr>
                         </tfoot>
diff --git a/debug_price.log b/debug_price.log
index 5eed4b5..9e4a20b 100644
--- a/debug_price.log
+++ b/debug_price.log
@@ -15179,3 +15179,480 @@ Client price query executed. Found: {"price_net":"837.40","price_gross":"1030.00
 Found client price. Net: 837.4, Gross: 1030
 FINAL: Returning Net: 837.4, Gross: 1030
 ---
+---
+START getEffectivePrice for product 1, client 
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"1111.00","price_gross":"1366.53"}
+Found product price. Net: 1111, Gross: 1366.53
+FINAL: Returning Net: 1111, Gross: 1366.53
+---
+---
+START getEffectivePrice for product 2, client 
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"1318.05","price_gross":"1621.20"}
+Found product price. Net: 1318.05, Gross: 1621.2
+FINAL: Returning Net: 1318.05, Gross: 1621.2
+---
+---
+START getEffectivePrice for product 3, client 
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"9.95","price_gross":"12.24"}
+Found product price. Net: 9.95, Gross: 12.24
+FINAL: Returning Net: 9.95, Gross: 12.24
+---
+---
+START getEffectivePrice for product 4, client 
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"9.95","price_gross":"12.24"}
+Found product price. Net: 9.95, Gross: 12.24
+FINAL: Returning Net: 9.95, Gross: 12.24
+---
+---
+START getEffectivePrice for product 5, client 
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"68.00","price_gross":"83.64"}
+Found product price. Net: 68, Gross: 83.64
+FINAL: Returning Net: 68, Gross: 83.64
+---
+---
+START getEffectivePrice for product 6, client 
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"171.60","price_gross":"211.07"}
+Found product price. Net: 171.6, Gross: 211.07
+FINAL: Returning Net: 171.6, Gross: 211.07
+---
+---
+START getEffectivePrice for product 7, client 
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"233.20","price_gross":"286.84"}
+Found product price. Net: 233.2, Gross: 286.84
+FINAL: Returning Net: 233.2, Gross: 286.84
+---
+---
+START getEffectivePrice for product 1, client 
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"1111.00","price_gross":"1366.53"}
+Found product price. Net: 1111, Gross: 1366.53
+FINAL: Returning Net: 1111, Gross: 1366.53
+---
+---
+START getEffectivePrice for product 2, client 
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"1318.05","price_gross":"1621.20"}
+Found product price. Net: 1318.05, Gross: 1621.2
+FINAL: Returning Net: 1318.05, Gross: 1621.2
+---
+---
+START getEffectivePrice for product 3, client 
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"9.95","price_gross":"12.24"}
+Found product price. Net: 9.95, Gross: 12.24
+FINAL: Returning Net: 9.95, Gross: 12.24
+---
+---
+START getEffectivePrice for product 4, client 
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"9.95","price_gross":"12.24"}
+Found product price. Net: 9.95, Gross: 12.24
+FINAL: Returning Net: 9.95, Gross: 12.24
+---
+---
+START getEffectivePrice for product 5, client 
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"68.00","price_gross":"83.64"}
+Found product price. Net: 68, Gross: 83.64
+FINAL: Returning Net: 68, Gross: 83.64
+---
+---
+START getEffectivePrice for product 6, client 
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"171.60","price_gross":"211.07"}
+Found product price. Net: 171.6, Gross: 211.07
+FINAL: Returning Net: 171.6, Gross: 211.07
+---
+---
+START getEffectivePrice for product 7, client 
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"233.20","price_gross":"286.84"}
+Found product price. Net: 233.2, Gross: 286.84
+FINAL: Returning Net: 233.2, Gross: 286.84
+---
+---
+START getEffectivePrice for product 1, client 
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"1111.00","price_gross":"1366.53"}
+Found product price. Net: 1111, Gross: 1366.53
+FINAL: Returning Net: 1111, Gross: 1366.53
+---
+---
+START getEffectivePrice for product 2, client 
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"1318.05","price_gross":"1621.20"}
+Found product price. Net: 1318.05, Gross: 1621.2
+FINAL: Returning Net: 1318.05, Gross: 1621.2
+---
+---
+START getEffectivePrice for product 3, client 
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"9.95","price_gross":"12.24"}
+Found product price. Net: 9.95, Gross: 12.24
+FINAL: Returning Net: 9.95, Gross: 12.24
+---
+---
+START getEffectivePrice for product 4, client 
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"9.95","price_gross":"12.24"}
+Found product price. Net: 9.95, Gross: 12.24
+FINAL: Returning Net: 9.95, Gross: 12.24
+---
+---
+START getEffectivePrice for product 5, client 
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"68.00","price_gross":"83.64"}
+Found product price. Net: 68, Gross: 83.64
+FINAL: Returning Net: 68, Gross: 83.64
+---
+---
+START getEffectivePrice for product 6, client 
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"171.60","price_gross":"211.07"}
+Found product price. Net: 171.6, Gross: 211.07
+FINAL: Returning Net: 171.6, Gross: 211.07
+---
+---
+START getEffectivePrice for product 7, client 
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"233.20","price_gross":"286.84"}
+Found product price. Net: 233.2, Gross: 286.84
+FINAL: Returning Net: 233.2, Gross: 286.84
+---
+---
+START getEffectivePrice for product 1, client 1
+Client price query executed. Found: {"price_net":"837.40","price_gross":"1030.00"}
+Found client price. Net: 837.4, Gross: 1030
+FINAL: Returning Net: 837.4, Gross: 1030
+---
+---
+START getEffectivePrice for product 2, client 1
+Client price query executed. Found: {"price_net":"1056.91","price_gross":"1300.00"}
+Found client price. Net: 1056.91, Gross: 1300
+FINAL: Returning Net: 1056.91, Gross: 1300
+---
+---
+START getEffectivePrice for product 3, client 1
+Client price query executed. Found: {"price_net":"32.52","price_gross":"40.00"}
+Found client price. Net: 32.52, Gross: 40
+FINAL: Returning Net: 32.52, Gross: 40
+---
+---
+START getEffectivePrice for product 4, client 1
+Client price query executed. Found: No
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"9.95","price_gross":"12.24"}
+Found product price. Net: 9.95, Gross: 12.24
+FINAL: Returning Net: 9.95, Gross: 12.24
+---
+---
+START getEffectivePrice for product 5, client 1
+Client price query executed. Found: No
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"68.00","price_gross":"83.64"}
+Found product price. Net: 68, Gross: 83.64
+FINAL: Returning Net: 68, Gross: 83.64
+---
+---
+START getEffectivePrice for product 6, client 1
+Client price query executed. Found: No
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"171.60","price_gross":"211.07"}
+Found product price. Net: 171.6, Gross: 211.07
+FINAL: Returning Net: 171.6, Gross: 211.07
+---
+---
+START getEffectivePrice for product 7, client 1
+Client price query executed. Found: No
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"233.20","price_gross":"286.84"}
+Found product price. Net: 233.2, Gross: 286.84
+FINAL: Returning Net: 233.2, Gross: 286.84
+---
+---
+START getEffectivePrice for product 2, client 1
+Client price query executed. Found: {"price_net":"1056.91","price_gross":"1300.00"}
+Found client price. Net: 1056.91, Gross: 1300
+FINAL: Returning Net: 1056.91, Gross: 1300
+---
+---
+START getEffectivePrice for product 1, client 1
+Client price query executed. Found: {"price_net":"837.40","price_gross":"1030.00"}
+Found client price. Net: 837.4, Gross: 1030
+FINAL: Returning Net: 837.4, Gross: 1030
+---
+---
+START getEffectivePrice for product 2, client 1
+Client price query executed. Found: {"price_net":"1056.91","price_gross":"1300.00"}
+Found client price. Net: 1056.91, Gross: 1300
+FINAL: Returning Net: 1056.91, Gross: 1300
+---
+---
+START getEffectivePrice for product 3, client 1
+Client price query executed. Found: {"price_net":"32.52","price_gross":"40.00"}
+Found client price. Net: 32.52, Gross: 40
+FINAL: Returning Net: 32.52, Gross: 40
+---
+---
+START getEffectivePrice for product 4, client 1
+Client price query executed. Found: No
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"9.95","price_gross":"12.24"}
+Found product price. Net: 9.95, Gross: 12.24
+FINAL: Returning Net: 9.95, Gross: 12.24
+---
+---
+START getEffectivePrice for product 5, client 1
+Client price query executed. Found: No
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"68.00","price_gross":"83.64"}
+Found product price. Net: 68, Gross: 83.64
+FINAL: Returning Net: 68, Gross: 83.64
+---
+---
+START getEffectivePrice for product 6, client 1
+Client price query executed. Found: No
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"171.60","price_gross":"211.07"}
+Found product price. Net: 171.6, Gross: 211.07
+FINAL: Returning Net: 171.6, Gross: 211.07
+---
+---
+START getEffectivePrice for product 7, client 1
+Client price query executed. Found: No
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"233.20","price_gross":"286.84"}
+Found product price. Net: 233.2, Gross: 286.84
+FINAL: Returning Net: 233.2, Gross: 286.84
+---
+---
+START getEffectivePrice for product 2, client 1
+Client price query executed. Found: {"price_net":"1056.91","price_gross":"1300.00"}
+Found client price. Net: 1056.91, Gross: 1300
+FINAL: Returning Net: 1056.91, Gross: 1300
+---
+---
+START getEffectivePrice for product 3, client 1
+Client price query executed. Found: {"price_net":"32.52","price_gross":"40.00"}
+Found client price. Net: 32.52, Gross: 40
+FINAL: Returning Net: 32.52, Gross: 40
+---
+---
+START getEffectivePrice for product 4, client 1
+Client price query executed. Found: No
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"9.95","price_gross":"12.24"}
+Found product price. Net: 9.95, Gross: 12.24
+FINAL: Returning Net: 9.95, Gross: 12.24
+---
+---
+START getEffectivePrice for product 5, client 1
+Client price query executed. Found: No
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"68.00","price_gross":"83.64"}
+Found product price. Net: 68, Gross: 83.64
+FINAL: Returning Net: 68, Gross: 83.64
+---
+---
+START getEffectivePrice for product 6, client 1
+Client price query executed. Found: No
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"171.60","price_gross":"211.07"}
+Found product price. Net: 171.6, Gross: 211.07
+FINAL: Returning Net: 171.6, Gross: 211.07
+---
+---
+START getEffectivePrice for product 7, client 1
+Client price query executed. Found: No
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"233.20","price_gross":"286.84"}
+Found product price. Net: 233.2, Gross: 286.84
+FINAL: Returning Net: 233.2, Gross: 286.84
+---
+---
+START getEffectivePrice for product 2, client 1
+Client price query executed. Found: {"price_net":"1056.91","price_gross":"1300.00"}
+Found client price. Net: 1056.91, Gross: 1300
+FINAL: Returning Net: 1056.91, Gross: 1300
+---
+---
+START getEffectivePrice for product 2, client 1
+Client price query executed. Found: {"price_net":"1056.91","price_gross":"1300.00"}
+Found client price. Net: 1056.91, Gross: 1300
+FINAL: Returning Net: 1056.91, Gross: 1300
+---
+---
+START getEffectivePrice for product 2, client 1
+Client price query executed. Found: {"price_net":"1056.91","price_gross":"1300.00"}
+Found client price. Net: 1056.91, Gross: 1300
+FINAL: Returning Net: 1056.91, Gross: 1300
+---
+---
+START getEffectivePrice for product 1, client 1
+Client price query executed. Found: {"price_net":"837.40","price_gross":"1030.00"}
+Found client price. Net: 837.4, Gross: 1030
+FINAL: Returning Net: 837.4, Gross: 1030
+---
+---
+START getEffectivePrice for product 2, client 1
+Client price query executed. Found: {"price_net":"1056.91","price_gross":"1300.00"}
+Found client price. Net: 1056.91, Gross: 1300
+FINAL: Returning Net: 1056.91, Gross: 1300
+---
+---
+START getEffectivePrice for product 3, client 1
+Client price query executed. Found: {"price_net":"32.52","price_gross":"40.00"}
+Found client price. Net: 32.52, Gross: 40
+FINAL: Returning Net: 32.52, Gross: 40
+---
+---
+START getEffectivePrice for product 4, client 1
+Client price query executed. Found: No
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"9.95","price_gross":"12.24"}
+Found product price. Net: 9.95, Gross: 12.24
+FINAL: Returning Net: 9.95, Gross: 12.24
+---
+---
+START getEffectivePrice for product 5, client 1
+Client price query executed. Found: No
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"68.00","price_gross":"83.64"}
+Found product price. Net: 68, Gross: 83.64
+FINAL: Returning Net: 68, Gross: 83.64
+---
+---
+START getEffectivePrice for product 6, client 1
+Client price query executed. Found: No
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"171.60","price_gross":"211.07"}
+Found product price. Net: 171.6, Gross: 211.07
+FINAL: Returning Net: 171.6, Gross: 211.07
+---
+---
+START getEffectivePrice for product 7, client 1
+Client price query executed. Found: No
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"233.20","price_gross":"286.84"}
+Found product price. Net: 233.2, Gross: 286.84
+FINAL: Returning Net: 233.2, Gross: 286.84
+---
+---
+START getEffectivePrice for product 1, client 1
+Client price query executed. Found: {"price_net":"837.40","price_gross":"1030.00"}
+Found client price. Net: 837.4, Gross: 1030
+FINAL: Returning Net: 837.4, Gross: 1030
+---
+---
+START getEffectivePrice for product 2, client 1
+Client price query executed. Found: {"price_net":"1056.91","price_gross":"1300.00"}
+Found client price. Net: 1056.91, Gross: 1300
+FINAL: Returning Net: 1056.91, Gross: 1300
+---
+---
+START getEffectivePrice for product 3, client 1
+Client price query executed. Found: {"price_net":"32.52","price_gross":"40.00"}
+Found client price. Net: 32.52, Gross: 40
+FINAL: Returning Net: 32.52, Gross: 40
+---
+---
+START getEffectivePrice for product 4, client 1
+Client price query executed. Found: No
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"9.95","price_gross":"12.24"}
+Found product price. Net: 9.95, Gross: 12.24
+FINAL: Returning Net: 9.95, Gross: 12.24
+---
+---
+START getEffectivePrice for product 5, client 1
+Client price query executed. Found: No
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"68.00","price_gross":"83.64"}
+Found product price. Net: 68, Gross: 83.64
+FINAL: Returning Net: 68, Gross: 83.64
+---
+---
+START getEffectivePrice for product 6, client 1
+Client price query executed. Found: No
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"171.60","price_gross":"211.07"}
+Found product price. Net: 171.6, Gross: 211.07
+FINAL: Returning Net: 171.6, Gross: 211.07
+---
+---
+START getEffectivePrice for product 7, client 1
+Client price query executed. Found: No
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"233.20","price_gross":"286.84"}
+Found product price. Net: 233.2, Gross: 286.84
+FINAL: Returning Net: 233.2, Gross: 286.84
+---
+---
+START getEffectivePrice for product 2, client 1
+Client price query executed. Found: {"price_net":"1056.91","price_gross":"1300.00"}
+Found client price. Net: 1056.91, Gross: 1300
+FINAL: Returning Net: 1056.91, Gross: 1300
+---
+---
+START getEffectivePrice for product 3, client 1
+Client price query executed. Found: {"price_net":"32.52","price_gross":"40.00"}
+Found client price. Net: 32.52, Gross: 40
+FINAL: Returning Net: 32.52, Gross: 40
+---
+---
+START getEffectivePrice for product 4, client 1
+Client price query executed. Found: No
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"9.95","price_gross":"12.24"}
+Found product price. Net: 9.95, Gross: 12.24
+FINAL: Returning Net: 9.95, Gross: 12.24
+---
+---
+START getEffectivePrice for product 5, client 1
+Client price query executed. Found: No
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"68.00","price_gross":"83.64"}
+Found product price. Net: 68, Gross: 83.64
+FINAL: Returning Net: 68, Gross: 83.64
+---
+---
+START getEffectivePrice for product 6, client 1
+Client price query executed. Found: No
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"171.60","price_gross":"211.07"}
+Found product price. Net: 171.6, Gross: 211.07
+FINAL: Returning Net: 171.6, Gross: 211.07
+---
+---
+START getEffectivePrice for product 7, client 1
+Client price query executed. Found: No
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"233.20","price_gross":"286.84"}
+Found product price. Net: 233.2, Gross: 286.84
+FINAL: Returning Net: 233.2, Gross: 286.84
+---
+---
+START getEffectivePrice for product 2, client 1
+Client price query executed. Found: {"price_net":"1056.91","price_gross":"1300.00"}
+Found client price. Net: 1056.91, Gross: 1300
+FINAL: Returning Net: 1056.91, Gross: 1300
+---
+---
+START getEffectivePrice for product 2, client 1
+Client price query executed. Found: {"price_net":"1056.91","price_gross":"1300.00"}
+Found client price. Net: 1056.91, Gross: 1300
+FINAL: Returning Net: 1056.91, Gross: 1300
+---
+---
+START getEffectivePrice for product 2, client 1
+Client price query executed. Found: {"price_net":"1056.91","price_gross":"1300.00"}
+Found client price. Net: 1056.91, Gross: 1300
+FINAL: Returning Net: 1056.91, Gross: 1300
+---
diff --git a/generate_order_pdf.php b/generate_order_pdf.php
index dee5550..d0e329a 100644
--- a/generate_order_pdf.php
+++ b/generate_order_pdf.php
@@ -20,7 +20,7 @@ if (!is_logged_in()) {
     exit;
 }
 
-$stmt = db()->prepare("SELECT o.*, c.name as client_name, c.email as client_email FROM orders o JOIN clients c ON o.client_id = c.id WHERE o.id = ?");
+$stmt = db()->prepare("SELECT o.*, c.name as client_name, c.email as client_email, c.language as client_language FROM orders o JOIN clients c ON o.client_id = c.id WHERE o.id = ?");
 $stmt->execute([$order_id]);
 $order = $stmt->fetch(PDO::FETCH_ASSOC);
 
@@ -128,8 +128,16 @@ $pdf->Ln($headerRowHeight);
 $pdf->SetFont('DejaVu', '', 12);
 $vatRate = 1.23;
 foreach ($order_items as $item) {
-    $unit_price_gross = (float)$item['unit_price'];
-    $unit_price_net = $unit_price_gross / $vatRate;
+    $client_language = $order['client_language'];
+    $vatRate = 1.23;
+
+    if ($client_language === 'en') {
+        $unit_price_net = (float)$item['unit_price'];
+        $unit_price_gross = $unit_price_net * $vatRate;
+    } else {
+        $unit_price_gross = (float)$item['unit_price'];
+        $unit_price_net = $unit_price_gross / $vatRate;
+    }
 
     // --- Cell data ---
     $widths = [70, 30, 30, 30, 30];
diff --git a/includes/i18n.php b/includes/i18n.php
index bb58bd3..8985131 100644
--- a/includes/i18n.php
+++ b/includes/i18n.php
@@ -120,6 +120,7 @@ $translations = [
         'update_button' => 'Zaktualizuj',
         'remove_button' => 'Usuń',
         'total_gross_label' => 'Razem (brutto):',
+        'total_net_label' => 'Razem (netto):',
         'proceed_to_checkout' => 'Przejdź do zamówienia',
         'db_connection_error' => 'Błąd połączenia z bazą danych: ',
         'price_per' => 'Cena za',
@@ -326,6 +327,7 @@ $translations = [
         'update_button' => 'Update',
         'remove_button' => 'Remove',
         'total_gross_label' => 'Total (gross):',
+        'total_net_label' => 'Total (net):',
         'proceed_to_checkout' => 'Proceed to checkout',
         'db_connection_error' => 'Database connection error: ',
         'price_per' => 'Price per',
diff --git a/order_process.php b/order_process.php
index d9344c3..f6cda57 100644
--- a/order_process.php
+++ b/order_process.php
@@ -28,14 +28,14 @@ try {
     // 1. Get product details from the database
     $product_ids = array_keys($cart);
     $placeholders = implode(',', array_fill(0, count($product_ids), '?'));
-    $stmt = $pdo->prepare("SELECT id, price, units_per_pallet FROM products WHERE id IN ($placeholders)");
+    $stmt = $pdo->prepare("SELECT id, price, units_per_pallet, name FROM products WHERE id IN ($placeholders)");
     $stmt->execute($product_ids);
     $products_by_id = $stmt->fetchAll(PDO::FETCH_GROUP|PDO::FETCH_UNIQUE|PDO::FETCH_ASSOC);
 
-
     // 2. Calculate total amount
-    $total_amount_gross = 0;
+    $total_amount = 0;
     $client_id = $_SESSION['client_id'] ?? null;
+    $lang = $_SESSION['lang'] ?? 'pl';
     
     $order_items_data = [];
 
@@ -45,15 +45,24 @@ try {
             $product = $products_by_id[$product_id];
             
             $price_info = getEffectivePrice($pdo, $product_id, $client_id);
+            $price_net = $price_info['net'];
             $price_gross = $price_info['gross'];
 
-            $total_amount_gross += $price_gross * $quantity;
+            if ($lang === 'en') {
+                $unit_price = $price_net;
+            } else {
+                $unit_price = $price_gross;
+            }
+
+            $line_total = $unit_price * $quantity;
+            $total_amount += $line_total;
 
             $order_items_data[] = [
                 'product_id' => $product_id,
                 'quantity' => $quantity,
-                'unit_price' => $price_gross, // Save gross price
-                'line_total' => $price_gross * $quantity,
+                'unit_price' => $unit_price, 
+                'line_total' => $line_total,
+                'name' => $product['name'],
             ];
 
             $units_per_pallet = $product['units_per_pallet'];
@@ -72,11 +81,11 @@ try {
         $stmt->execute([$client_id]);
         $credit_info = $stmt->fetch();
 
-        if (!$credit_info || !$credit_info['credit_enabled'] || $credit_info['credit_balance'] < $total_amount_gross) {
+        if (!$credit_info || !$credit_info['credit_enabled'] || $credit_info['credit_balance'] < $total_amount) {
             throw new Exception('Invalid payment method or insufficient credit.');
         }
 
-        $new_balance = $credit_info['credit_balance'] - $total_amount_gross;
+        $new_balance = $credit_info['credit_balance'] - $total_amount;
         $stmt = $pdo->prepare('UPDATE clients SET credit_balance = ? WHERE id = ?');
         $stmt->execute([$new_balance, $client_id]);
     }
@@ -87,7 +96,7 @@ try {
     );
     $stmt->execute([
         $client_id,
-        $total_amount_gross,
+        $total_amount,
         $_POST['payment_method'],
         $delivery_source,
         $_POST['notes'],
@@ -131,7 +140,7 @@ try {
         // Register transaction with P24
         $p24_data = [
             'sessionId' => $p24_session_id,
-            'amount' => (int)($total_amount_gross * 100), // Amount in grosze
+            'amount' => (int)($total_amount * 100), // Amount in grosze
             'description' => "Order #" . $order_id,
             'email' => $client_email,
             'client' => $client_name,
@@ -162,16 +171,13 @@ try {
             } elseif (isset($response['error'])) {
                 $error_message = $response['error'];
             }
-            redirect_with_error('checkout.php', 'Błąd podczas przetwarzania zamówienia: ' . $error_message);
+            redirect_with_error('checkout.php', 'Error processing order: ' . $error_message);
         }
     }
 
     $pdo->commit();
 
     // 6. Send email notifications
-
-
-    // --- Data Fetching for Emails ---
     $user_id = $_SESSION['user_id'] ?? null;
     $stmt = $pdo->prepare('SELECT email FROM users WHERE id = ?');
     $stmt->execute([$user_id]);
@@ -183,27 +189,24 @@ try {
     $client = $stmt->fetch();
     $client_company_name = $client['name'] ?? 'N/A';
 
-    $product_ids_for_names = array_map(function($item) { return $item['product_id']; }, $order_items_data);
-    $placeholders = implode(',', array_fill(0, count($product_ids_for_names), '?'));
-    $stmt = $pdo->prepare("SELECT id, name FROM products WHERE id IN ($placeholders)");
-    $stmt->execute($product_ids_for_names);
-    $products_by_id_for_email = $stmt->fetchAll(PDO::FETCH_KEY_PAIR);
-
     $order_details_link = get_site_url() . '/order_details.php?id=' . $order_id;
     $admin_order_details_link = get_site_url() . '/admin/order_details.php?id=' . $order_id;
     $admin_email = getenv('MAIL_TO') ?: 'admin@example.com';
 
-    // --- Email Sending Logic ---
-    $site_name = get_site_url(); // Or your site name
+    $site_name = get_site_url();
     $lang = get_lang();
 
+    $products_by_id_for_email = [];
+    foreach($order_items_data as $item){
+        $products_by_id_for_email[$item['product_id']] = $item['name'];
+    }
+
     if ($client_email) {
-        // 1. Client - Order Confirmation
         $data_client = [
             'order_id' => $order_id,
             'order_items' => $order_items_data,
             'products' => $products_by_id_for_email,
-            'total_amount_gross' => $total_amount_gross,
+            'total_amount' => $total_amount,
             'payment_method' => $_POST['payment_method'],
             'order_details_link' => $order_details_link,
             'site_name' => $site_name,
@@ -211,22 +214,21 @@ try {
         ];
         MailService::sendTemplatedMail($client_email, $lang, 'order_confirmation', $data_client);
 
-        // 3. Client - Payment Instructions (Bank Transfer)
         if ($_POST['payment_method'] === 'bank_transfer') {
-            // Fetch bank details from the settings table
             $stmt = $pdo->query("SELECT `key`, `value` FROM settings WHERE `key` IN ('bank_name', 'bank_account_number')");
             $settings = $stmt->fetchAll(PDO::FETCH_KEY_PAIR);
             
             $bank_name = $settings['bank_name'] ?? '';
             $bank_account_number = $settings['bank_account_number'] ?? '';
 
-            $bank_account_details = "Bank: " . $bank_name . "\nAccount Number: " . $bank_account_number;
+            $bank_account_details = "Bank: " . $bank_name . "
+Account Number: " . $bank_account_number;
             $transfer_title = "Order #{$order_id}";
             $payment_deadline = date('Y-m-d', strtotime('+7 days'));
 
             $data_bank = [
                 'order_id' => $order_id,
-                'total_amount_gross' => $total_amount_gross,
+                'total_amount' => $total_amount,
                 'bank_account_details' => $bank_account_details,
                 'transfer_title' => $transfer_title,
                 'payment_deadline' => $payment_deadline,
@@ -236,11 +238,10 @@ try {
             MailService::sendTemplatedMail($client_email, $lang, 'payment_instructions', $data_bank);
         }
 
-        // 6. Client - Credit Payment Confirmation
         if ($_POST['payment_method'] === 'credit') {
             $data_credit = [
                 'order_id' => $order_id,
-                'total_amount_gross' => $total_amount_gross,
+                'total_amount' => $total_amount,
                 'new_balance' => $new_balance,
                 'order_details_link' => $order_details_link,
                 'site_name' => $site_name,
@@ -250,21 +251,25 @@ try {
         }
     }
 
-    // 2. Admin - New Order Notification
     $data_admin = [
         'order_id' => $order_id,
         'client_company_name' => $client_company_name,
-        'total_amount_gross' => $total_amount_gross,
+        'total_amount' => $total_amount,
         'payment_method' => $_POST['payment_method'],
         'delivery_source' => $delivery_source,
         'admin_order_details_link' => $admin_order_details_link,
         'site_name' => $site_name,
         'pdo' => $pdo,
     ];
-    MailService::sendTemplatedMail($admin_email, 'en', 'admin_new_order', $data_admin); // Admin email in English
+    MailService::sendTemplatedMail($admin_email, 'en', 'admin_new_order', $data_admin);
 
-    // 7. Supplier - New Order Items
-    $stmt = $pdo->prepare("\n        SELECT p.supplier_id, s.name as supplier_name, s.email as supplier_email, p.name as product_name, oi.quantity\n        FROM order_items oi\n        JOIN products p ON oi.product_id = p.id\n        JOIN suppliers s ON p.supplier_id = s.id\n        WHERE oi.order_id = ? AND p.supplier_id IS NOT NULL\n    ");
+    $stmt = $pdo->prepare("
+        SELECT p.supplier_id, s.name as supplier_name, s.email as supplier_email, p.name as product_name, oi.quantity
+        FROM order_items oi
+        JOIN products p ON oi.product_id = p.id
+        JOIN suppliers s ON p.supplier_id = s.id
+        WHERE oi.order_id = ? AND p.supplier_id IS NOT NULL
+    ");
     $stmt->execute([$order_id]);
     $supplier_items = $stmt->fetchAll(PDO::FETCH_ASSOC);
 
@@ -288,16 +293,14 @@ try {
                 'site_name' => $site_name,
                 'pdo' => $pdo,
             ];
-            MailService::sendTemplatedMail($supplier_data['email'], 'en', 'supplier_new_order_items', $data_supplier); // Supplier email in English
+            MailService::sendTemplatedMail($supplier_data['email'], 'en', 'supplier_new_order_items', $data_supplier);
         }
     }
 
 
-    // 8. Clear the cart and store order ID in session for the confirmation page
     unset($_SESSION['cart']);
     $_SESSION['latest_order_id'] = $order_id;
 
-    // 9. Redirect to confirmation page
     header('Location: order_confirmation.php');
     exit;
 
@@ -305,18 +308,18 @@ try {
     if ($pdo->inTransaction()) {
         $pdo->rollBack();
     }
-    // In a real application, log this error
-    die("Błąd podczas przetwarzania zamówienia: " . $e->getMessage());
+    error_log("Error in order_process.php: " . $e->getMessage());
+    die("Error processing order. Please try again later.");
 } catch (PDOException $e) {
     if ($pdo->inTransaction()) {
         $pdo->rollBack();
     }
-    // In a real application, log this error
-    die("Błąd podczas przetwarzania zamówienia: " . $e->getMessage());
+    error_log("PDOError in order_process.php: " . $e->getMessage());
+    die("Error processing order. Please try again later.");
 } catch (Throwable $t) {
     if ($pdo->inTransaction()) {
         $pdo->rollBack();
     }
-    die("An unexpected error occurred: " . $t->getMessage());
-}
-
+    error_log("Fatal error in order_process.php: " . $t->getMessage());
+    die("An unexpected error occurred. Please try again later.");
+}
\ No newline at end of file
diff --git a/templates/mail/en/admin_new_order.php b/templates/mail/en/admin_new_order.php
index 5ebcaad..abaeb2c 100644
--- a/templates/mail/en/admin_new_order.php
+++ b/templates/mail/en/admin_new_order.php
@@ -4,7 +4,7 @@
 /**
  * @var int $order_id
  * @var string $client_company_name
- * @var float $total_amount_gross
+ * @var float $total_amount
  * @var string $payment_method
  * @var string $delivery_source
  * @var string $admin_order_details_link
@@ -14,7 +14,7 @@
 <p>A new order has been placed.</p>
 <p><strong>Order ID:</strong> <?php echo $order_id; ?></p>
 <p><strong>Client:</strong> <?php echo htmlspecialchars($client_company_name); ?></p>
-<p><strong>Total Amount:</strong> <?php echo format_money($total_amount_gross, $lang, $db); ?></p>
+<p><strong>Total Amount:</strong> <?php echo format_money($total_amount, $lang, $db); ?></p>
 <p><strong>Payment Method:</strong> <?php echo htmlspecialchars(ucfirst(str_replace('_', ' ', $payment_method))); ?></p>
 <p><strong>Delivery Source:</strong> <?php echo htmlspecialchars(strtoupper($delivery_source)); ?></p>
 <p>View order details: <a href="<?php echo $admin_order_details_link; ?>"><?php echo $admin_order_details_link; ?></a></p>
\ No newline at end of file
diff --git a/templates/mail/en/credit_payment_confirmation.php b/templates/mail/en/credit_payment_confirmation.php
index ad6b049..25a37c3 100644
--- a/templates/mail/en/credit_payment_confirmation.php
+++ b/templates/mail/en/credit_payment_confirmation.php
@@ -3,13 +3,13 @@
 
 /**
  * @var int $order_id
- * @var float $total_amount_gross
+ * @var float $total_amount
  * @var float $new_balance
  * @var string $order_details_link
  */
 ?>
 
 <p>Hello,</p>
-<p>We confirm that your payment of <?php echo format_money($total_amount_gross, $lang, $db); ?> for order #<?php echo $order_id; ?> has been successfully processed using your trade credit.</p>
+<p>We confirm that your payment of <?php echo format_money($total_amount, $lang, $db); ?> for order #<?php echo $order_id; ?> has been successfully processed using your trade credit.</p>
 <p>Your new credit balance is <?php echo format_money($new_balance, $lang, $db); ?>.</p>
 <p>You can view your order details here: <a href="<?php echo $order_details_link; ?>"><?php echo $order_details_link; ?></a></p>
\ No newline at end of file
diff --git a/templates/mail/en/order_confirmation.php b/templates/mail/en/order_confirmation.php
index fb5a482..236a460 100644
--- a/templates/mail/en/order_confirmation.php
+++ b/templates/mail/en/order_confirmation.php
@@ -4,7 +4,7 @@
 /**
  * @var int $order_id
  * @var string $product_list_html
- * @var float $total_amount_gross
+ * @var float $total_amount
  * @var string $payment_method
  * @var string $order_details_link
  */
@@ -18,7 +18,7 @@
         <li><?php echo htmlspecialchars($products[$item['product_id']] ?? 'Unknown Product'); ?> (Quantity: <?php echo $item['quantity']; ?>)</li>
     <?php endforeach; ?>
 </ul>
-<p><strong>Total:</strong> <?php echo format_money($total_amount_gross, $lang, $db); ?></p>
+<p><strong>Total:</strong> <?php echo format_money($total_amount, $lang, $db); ?></p>
 <p><strong>Payment Method:</strong> <?php echo htmlspecialchars(ucfirst(str_replace('_', ' ', $payment_method))); ?></p>
 <p>You can view your order details here: <a href="<?php echo $order_details_link; ?>"><?php echo $order_details_link; ?></a></p>
 <p>Thank you for your business!</p>
\ No newline at end of file
diff --git a/templates/mail/en/payment_instructions.php b/templates/mail/en/payment_instructions.php
index 139f0b5..02c131d 100644
--- a/templates/mail/en/payment_instructions.php
+++ b/templates/mail/en/payment_instructions.php
@@ -3,7 +3,7 @@
 
 /**
  * @var int $order_id
- * @var float $total_amount_gross
+ * @var float $total_amount
  * @var string $bank_account_details
  * @var string $transfer_title
  * @var string $payment_deadline
@@ -12,7 +12,7 @@
 
 <p>Hello,</p>
 <p>Please use the following details to make a bank transfer for your order #<?php echo $order_id; ?>.</p>
-<p><strong>Amount:</strong> <?php echo format_money($total_amount_gross, $lang, $db); ?></p>
+<p><strong>Amount:</strong> <?php echo format_money($total_amount, $lang, $db); ?></p>
 <p><strong>Bank Details:</strong></p>
 <pre><?php echo htmlspecialchars($bank_account_details); ?></pre>
 <p><strong>Transfer Title:</strong> <?php echo htmlspecialchars($transfer_title); ?></p>
diff --git a/templates/mail/pl/credit_payment_confirmation.php b/templates/mail/pl/credit_payment_confirmation.php
index 7e310e8..7a03af0 100644
--- a/templates/mail/pl/credit_payment_confirmation.php
+++ b/templates/mail/pl/credit_payment_confirmation.php
@@ -3,13 +3,13 @@
 
 /**
  * @var int $order_id
- * @var float $total_amount_gross
+ * @var float $total_amount
  * @var float $new_balance
  * @var string $order_details_link
  */
 ?>
 
 <p>Dzień dobry,</p>
-<p>Potwierdzamy, że Twoja płatność w wysokości <?php echo format_money($total_amount_gross, $lang, $db); ?> za zamówienie #<?php echo $order_id; ?> została pomyślnie przetworzona przy użyciu kredytu kupieckiego.</p>
+<p>Potwierdzamy, że Twoja płatność w wysokości <?php echo format_money($total_amount, $lang, $db); ?> za zamówienie #<?php echo $order_id; ?> została pomyślnie przetworzona przy użyciu kredytu kupieckiego.</p>
 <p>Twoje nowe saldo kredytowe wynosi <?php echo format_money($new_balance, $lang, $db); ?>.</p>
 <p>Możesz zobaczyć szczegóły zamówienia tutaj: <a href="<?php echo $order_details_link; ?>"><?php echo $order_details_link; ?></a></p>
\ No newline at end of file
diff --git a/templates/mail/pl/order_confirmation.php b/templates/mail/pl/order_confirmation.php
index 116706f..d23bc24 100644
--- a/templates/mail/pl/order_confirmation.php
+++ b/templates/mail/pl/order_confirmation.php
@@ -4,7 +4,7 @@
 /**
  * @var int $order_id
  * @var string $product_list_html
- * @var float $total_amount_gross
+ * @var float $total_amount
  * @var string $payment_method
  * @var string $order_details_link
  */
@@ -18,7 +18,7 @@
         <li><?php echo htmlspecialchars($products[$item['product_id']] ?? 'Nieznany produkt'); ?> (Ilość: <?php echo $item['quantity']; ?>)</li>
     <?php endforeach; ?>
 </ul>
-<p><strong>Suma:</strong> <?php echo format_money($total_amount_gross, $lang, $db); ?></p>
+<p><strong>Suma:</strong> <?php echo format_money($total_amount, $lang, $db); ?></p>
 <p><strong>Metoda płatności:</strong> <?php echo htmlspecialchars(ucfirst(str_replace('_', ' ', $payment_method))); ?></p>
 <p>Możesz zobaczyć szczegóły zamówienia tutaj: <a href="<?php echo $order_details_link; ?>"><?php echo $order_details_link; ?></a></p>
 <p>Dziękujemy za zakupy!</p>
\ No newline at end of file
diff --git a/templates/mail/pl/payment_instructions.php b/templates/mail/pl/payment_instructions.php
index 73489b7..af1de8d 100644
--- a/templates/mail/pl/payment_instructions.php
+++ b/templates/mail/pl/payment_instructions.php
@@ -3,7 +3,7 @@
 
 /**
  * @var int $order_id
- * @var float $total_amount_gross
+ * @var float $total_amount
  * @var string $bank_account_details
  * @var string $transfer_title
  * @var string $payment_deadline
@@ -12,7 +12,7 @@
 
 <p>Dzień dobry,</p>
 <p>Proszę użyć poniższych danych do wykonania przelewu bankowego za zamówienie #<?php echo $order_id; ?>.</p>
-<p><strong>Kwota:</strong> <?php echo format_money($total_amount_gross, $lang, $db); ?></p>
+<p><strong>Kwota:</strong> <?php echo format_money($total_amount, $lang, $db); ?></p>
 <p><strong>Dane bankowe:</strong></p>
 <pre><?php echo htmlspecialchars($bank_account_details); ?></pre>
 <p><strong>Tytuł przelewu:</strong> <?php echo htmlspecialchars($transfer_title); ?></p>