diff --git a/app/Classes/Helpers/InvoiceDocumentsHelper.php b/app/Classes/Helpers/InvoiceDocumentsHelper.php
new file mode 100644
index 00000000..8b7ba8c4
--- /dev/null
+++ b/app/Classes/Helpers/InvoiceDocumentsHelper.php
@@ -0,0 +1,29 @@
+<?php
+
+namespace App\Classes\Helpers;
+
+class InvoiceDocumentsHelper
+{
+    public static function calculateSubtotal($po_order_transaction, $currencyRate) {
+        $subtotal = "0";
+        foreach ($po_order_transaction->transactionDetails as $transaction_detail) {
+            $unitPrice = bcdiv((string)$transaction_detail->price, (string)$currencyRate, 5);
+            $itemTotal = bcmul($unitPrice, (string)$transaction_detail->quantity, 5);
+            $subtotal = bcadd($subtotal, $itemTotal, 5);
+        }
+        return $subtotal;
+    }
+
+    public static function getVoucherDiscount($voucher_redemption) {
+        return $voucher_redemption ? bcmul((string)$voucher_redemption->value, "-1", 2) : "0";
+    }
+
+    public static function roundUp($number, $decimals) {
+        $factor = pow(10, $decimals);
+        if ($number > 0) {
+            return ceil($number * $factor) / $factor;
+        } else {
+            return floor($number * $factor) / $factor;
+        }
+    }
+}
diff --git a/app/Classes/Modules/Transactions/Processors/CreateInvoiceDocumentProcessor.php b/app/Classes/Modules/Transactions/Processors/CreateInvoiceDocumentProcessor.php
index 6215a1e1..2bbf5b88 100644
--- a/app/Classes/Modules/Transactions/Processors/CreateInvoiceDocumentProcessor.php
+++ b/app/Classes/Modules/Transactions/Processors/CreateInvoiceDocumentProcessor.php
@@ -1,7 +1,7 @@
 <?php
 
 namespace App\Classes\Modules\Transactions\Processors;
-
+use App\Helpers\HelperClass;
 use App\Classes\Modules\Documents\Services\CreatesDocument;
 use App\Classes\Modules\Documents\Services\CreatesFiles;
 use App\Classes\Modules\Documents\DataTransferObjects\DocumentObject;
diff --git a/composer.json b/composer.json
index 47acc131..b8b505d5 100644
--- a/composer.json
+++ b/composer.json
@@ -31,7 +31,8 @@
         "staudenmeir/eloquent-has-many-deep": "^1.7",
         "timehunter/laravel-google-recaptcha-v3": "~2.5",
         "tymon/jwt-auth": "^1.0",
-        "webklex/laravel-pdfmerger": "^1.3"
+        "webklex/laravel-pdfmerger": "^1.3",
+      "ext-bcmath": "*"
     },
     "require-dev": {
         "facade/ignition": "^2.3.6",
diff --git a/resources/views/pages/pdfs/purchase_order.blade.php b/resources/views/pages/pdfs/purchase_order.blade.php
index e9d1c8fd..598ded16 100644
--- a/resources/views/pages/pdfs/purchase_order.blade.php
+++ b/resources/views/pages/pdfs/purchase_order.blade.php
@@ -90,8 +90,8 @@
         </thead>
         <tbody>
         @php
-            $subtotal = calculatePoSubtotal($po_order_transaction, $transaction->currency_rate);
-            $voucherDiscount = getPoVoucherDiscount($voucher_redemption);
+            $subtotal = InvoiceDocumentsHelper::calculateSubtotal($po_order_transaction, $transaction->currency_rate);
+            $voucherDiscount = InvoiceDocumentsHelper::getVoucherDiscount($voucher_redemption);
             $displayedSubtotal = 0;
         @endphp
 
@@ -118,7 +118,7 @@
         </tbody>
         <tfoot>
         @php
-            $voucherDiscount = getPoVoucherDiscount($voucher_redemption);
+            $voucherDiscount = InvoiceDocumentsHelper::getVoucherDiscount($voucher_redemption);
             $subtotalWithDiscount = bcsub($subtotal, $voucherDiscount, 5); // Use bcsub to subtract
         @endphp
         <tr class="subtotal">
@@ -156,7 +156,7 @@
         <tr>
             <td colspan="4"></td>
             <td class="right middle">Adjustment</td>
-            <td class="right middle">{{ roundUpPo($discrepancy,2)  }}</td>
+            <td class="right middle">{{ InvoiceDocumentsHelper::roundUp($discrepancy,2)  }}</td>
         </tr>
         <tr>
             <td colspan="4"></td>
@@ -175,28 +175,4 @@
             </tr>
         </table>
     </htmlpagefooter>
-    @php
-        function calculatePoSubtotal($po_order_transaction, $currencyRate) {
-            $subtotal = "0";
-            foreach ($po_order_transaction->transactionDetails as $transaction_detail) {
-                $unitPrice = bcdiv((string)$transaction_detail->price, (string)$currencyRate, 5);
-                $itemTotal = bcmul($unitPrice, (string)$transaction_detail->quantity, 5);
-                $subtotal = bcadd($subtotal, $itemTotal, 5);
-            }
-            return $subtotal;
-        }
-
-        function getPoVoucherDiscount($voucher_redemption) {
-            return $voucher_redemption ? bcmul((string)$voucher_redemption->value, "-1", 2) : "0";
-        }
-        function roundUpPo($number, $decimals) {
-        $factor = pow(10, $decimals);
-        if ($number > 0) {
-            return ceil($number * $factor) / $factor;
-        } else {
-            return floor($number * $factor) / $factor;
-        }
-    }
-
-    @endphp
 @endsection