About: Polish Zloty is the currency of Poland. The złoty is a traditional Polish currency unit dating back to the Middle Ages. In the 14th and 15th centuries, the name was used for all kinds of foreign gold coins used in Poland, most notably Venetian and Hungarian ducats. * USD/PLN - US Dollar Polish Zloty * NBP warns that Polish banks might be mostly in loss * Poland plans ‘supermarket tax’ on foreign retail giants