Magento 2.0.18 is the final 2.0.x release. After March 2018, Magento 2.0.x will no longer receive security patches, quality fixes, or documentation updates. To maintain your site's performance, security, and PCIPayment Card Industry: Refers to debit and credit cards and their associated businesses. compliance, upgrade to the latest version of Magento.
Value Added Tax (VAT)
Some countries charge a value added tax, or VAT, on goods and services. There can be different VAT rates depending on which stage you as a merchant are at in the manufacture or distribution of the products, materials, or services that you sell to your customers. In this case you may need to use more than one VAT rate in your store for tax calculation purposes.