diff --git a/packages/Webkul/Tax/src/Helpers/Tax.php b/packages/Webkul/Tax/src/Helpers/Tax.php
index 08e1f485b..0c91acb6f 100644
--- a/packages/Webkul/Tax/src/Helpers/Tax.php
+++ b/packages/Webkul/Tax/src/Helpers/Tax.php
@@ -13,16 +13,16 @@ class Tax
     /**
      * Returns an array with tax rates and tax amount
      *
-     * @param \Webkul\Checkout\Contracts\Cart $that
+     * @param \Webkul\Checkout\Contracts\Cart $cart
      * @param bool                            $asBase
      *
      * @return array
      */
-    public static function getTaxRatesWithAmount(\Webkul\Checkout\Contracts\Cart $that, bool $asBase = false): array
+    public static function getTaxRatesWithAmount(\Webkul\Checkout\Contracts\Cart $cart, bool $asBase = false): array
     {
         $taxes = [];
 
-        foreach ($that->items as $item) {
+        foreach ($cart->items as $item) {
             $taxRate = (string) round((float) $item->tax_percent, self::TAX_RATE_PRECISION);
 
             if (! array_key_exists($taxRate, $taxes)) {
@@ -43,14 +43,14 @@ class Tax
     /**
      * Returns the total tax amount
      *
-     * @param \Webkul\Checkout\Contracts\Cart $that
+     * @param \Webkul\Checkout\Contracts\Cart $cart
      * @param bool                            $asBase
      *
      * @return float
      */
-    public static function getTaxTotal(\Webkul\Checkout\Contracts\Cart $that, bool $asBase = false): float
+    public static function getTaxTotal(\Webkul\Checkout\Contracts\Cart $cart, bool $asBase = false): float
     {
-        $taxes = self::getTaxRatesWithAmount($that, $asBase);
+        $taxes = self::getTaxRatesWithAmount($cart, $asBase);
 
         $result = 0;