Ireland information: customs and borders Dublin Airport From customs and border regulations on the island of Ireland to duty-free allowances and how to claim VAT refunds – here’s what you need to know. USA Customs Import and Export Duty Calculator. Goodada's USA customs import and export duty calculator will help you identify the export tariff rates you will pay for the USA. By providing our team of brokers with several pieces of key information, we can determine the rates due and assist you in clearing the products. Currently, the United States has imposed a 100 percent rate of duty on certain products of Austria, Belgium, Denmark, Finland, France, The Federal Republic of Germany, Greece, Ireland, Italy, Luxembourg, the Netherlands, Portugal, Spain, Sweden and the Ukraine.