There are eight coins (valued at 1, 2, 5, 10, 20 and 50 cents, and 1 and 2 euros) and seven notes (5, 10, 20, 50, 100, 200 and 500 euros). The organization responsible for issuing the euro is the European Central Bank, and on its website you can see the exchange rate of the euro with the main world currencies. In Catalonia you can pay in cash in the vast majority of cases. The option to pay by credit or debit card is widespread, mainly Visa and Mastercard, although minimum spending may be required and payment may be subject to fees. To get cash you will find numerous bank branches with ATMs, and there are also usually in shopping centers and urban centers. Tipping is not compulsory in any case, but it is usually done in taxis and in bars and restaurants if the service has been satisfactory, leaving between 5 and 10% of the bill. Value added tax (VAT) is an indirect tax that taxes the final consumption of products and services. All residents outside the European Union can request a refund for purchases of items for personal use or as gifts. To do this, you must request the DIVA tax free form at the time of purchase and present it at the airport or port of departure. For more information, visit the website of the Agencia Tributaria (Spanish Tax Agency).