diff --git a/app/Http/Controllers/BookingController.php b/app/Http/Controllers/BookingController.php
index bf7256a2..28355215 100644
--- a/app/Http/Controllers/BookingController.php
+++ b/app/Http/Controllers/BookingController.php
@@ -297,21 +297,9 @@ class BookingController extends Controller
             $svcharge = 20.00;
         }
 
-        // initial rmb to myr amount 
-        $RMBinMYR = (($amount + $svcharge) / $rate);
-
-        // TODO : Should be remove this ? 
-        // gst 0% 
-        $gst = 0 * $RMBinMYR;
-
-        // Sales tax : 10 % 
-        $sales_tax = 0.10 * $RMBinMYR;
-
-        // Billing fees : 1.5%
-        $billing = 0.015 * $RMBinMYR;
-
-        // Bank in amount
-        $bia = round($RMBinMYR + $gst + $sales_tax + $billing, 2);
+        $bia = round(round($amount + $svcharge / $rate,2)
+            + round(round($amount + $svcharge / $rate,2) * $taxrate,2)
+            + round(($amount + $svcharge) * $billingChargeRate, 2) , 2);
 
         $booking = new Booking();
         $booking->account_name = $request->input('account_name');