Fixed Issue 12225: Tier pricing tax shows only including tax

Author: jiten-patel

app/code/Magento/Catalog/Pricing/Price/TierPrice.php

@@ -61,6 +61,10 @@ class TierPrice extends AbstractPrice implements TierPriceInterface, BasePricePr
      * @var CustomerGroupRetrieverInterface
      */
     private $customerGroupRetriever;
+    /**
+     * @var \Magento\Framework\App\Config\ScopeConfigInterface
+     */
+    private $scopeConfig;
 
     /**
      * @param Product $saleableItem
@@ -78,7 +82,8 @@ public function __construct(
         \Magento\Framework\Pricing\PriceCurrencyInterface $priceCurrency,
         Session $customerSession,
         GroupManagementInterface $groupManagement,
-        CustomerGroupRetrieverInterface $customerGroupRetriever = null
+        CustomerGroupRetrieverInterface $customerGroupRetriever = null,
+        \Magento\Framework\App\Config\ScopeConfigInterface $scopeConfig
     ) {
         $quantity = (float)$quantity ? $quantity : 1;
         parent::__construct($saleableItem, $quantity, $calculator, $priceCurrency);
@@ -91,6 +96,7 @@ public function __construct(
         } else {
             $this->customerGroup = (int) $this->customerGroupRetriever->getCustomerGroupId();
         }
+        $this->scopeConfig = $scopeConfig;
     }
 
     /**
@@ -157,6 +163,9 @@ function (&$priceData) {
                     /* convert string value to float */
                     $priceData['price_qty'] = $priceData['price_qty'] * 1;
                     $priceData['price'] = $this->applyAdjustment($priceData['price']);
+                    if ($this->scopeConfig->getValue('tax/display/type') == 3) {
+                        $priceData['excl_tax_price'] = $this->applyAdjustment($priceData['excl_tax_price'], true);
+                    }
                 }
             );
         }

app/code/Magento/ConfigurableProduct/Block/Product/View/Type/Configurable.php

@@ -295,6 +295,7 @@ protected function getOptionPrices()
                 $tierPrices[] = [
                     'qty' => $this->localeFormat->getNumber($tierPrice['price_qty']),
                     'price' => $this->localeFormat->getNumber($tierPrice['price']->getValue()),
+                    'excl_tax_price' => (is_object($tierPrice['excl_tax_price'])) ? $this->localeFormat->getNumber($tierPrice['excl_tax_price']->getValue()) : $tierPrice['base_price'],
                     'percentage' => $this->localeFormat->getNumber(
                         $tierPriceModel->getSavePercent($tierPrice['price'])
                     ),

app/code/Magento/ConfigurableProduct/view/base/templates/product/price/tier_price.phtml

@@ -11,6 +11,7 @@
                 + '<span data-price-amount="' + priceUtils.formatPrice(item.price, currencyFormat) + '"'
                 + ' data-price-type=""' + ' class="price-wrapper ">'
                 + '<span class="price">' + priceUtils.formatPrice(item.price, currencyFormat) + '</span>'
+                + '<span class="price"> excl. tax ' + priceUtils.formatPrice(item.excl_tax_price, currencyFormat) + '</span>
                 + '</span>'
             + '</span>'; %>
         <li class="item">