Penny-wise, pound-foolish: Restaurants feel short-changed by the elimination of the penny

As such, restaurants must change the way they treat cash customers, rounding to the nearest 5 cents when they do not have the exact amount. This is expected to cost restaurants a pretty penny: The National Restaurant Association estimates that rounding will cost restaurants an estimated $13 million to $14 million per month, or up to $168 million per year.