См. также: безналоговая зона, безобидная ложь, безоговорочная поддержка, безупречная репутация
"Exact change" usually refers to a payment of the specific amount required. Many urban bus lines in the U.S. accept "exact change only" in their fare machines, meaning that the box will accept only coins and the driver will not change paper bills. (UsingEnglish.com)
This bus ride requires exact change. (Wiktionary)
