Portugal’s currency is the euro (€), and notes are issued in denominations of 5, 10, 20, 50, 100, 200 and 500 euros, and coins in denominations of 1, 2, 5, 10, 20 and 50 cents and 1 and 2 euros. Up-to-the-minute currency exchange rates are displayed at wxe. com.
Bank exists in all places but the smallest towns. You also can change monney at Exchange bureaux (câmbios), or use your bank debit card to withdraw cash from an ATM (known as a Multibanco). All major credit cards are accepted in hotels, restaurants and shops, and for tours, tickets and transport.
Traditionally, Portuguese people don't tip. But if your waiter offers good service, you can tip. Most people in Portugal would just round up the total bill to the next euro. A 10-15% tip at a restaurant is very generous. For taxi drivers and hotel staff, tipping are not customary in Portugal.
If non-EU residents purchase at a tax-free shop over the minimum amount, they are entitled to have a tax refund. Remember to ask the Tax Free Form and complete. When you leave EU, get a stamp in the Customs desk. They money will be given to you directly or refunded to your bank account.