Cape Verde is quite a poor country. But the locals work hard. What's this got to do with tipping? Well, many of the businesses, restaurants, retail outlets are owned by foreigners, but when you go to a resturant you will almost certainly be served by a Capo Verdian girl.

Usually in restaurants they accumulate the tips and it is shared out. The amount you tip should always be what you think is fitting for the service you have recieved . You do not need compare this with the country that you have come from. Most workers genuinly appreciate your patronage, not just the fact that you may be a big tipper.

Usually when you pay,  the change is in Euros the local currency.