If you're a business customer in a bank, and you bring in cash on a regular basis, the bank will actually charge you a percentage for doing that. From a discus

If you're a business customer in a bank, and you bring in cash on a regular basis, the bank will actually charge you a percentage for doing that. From a discussion I had with a merchant, that rate is quite high, especially for small change. The value he gave for small change was 7%. That's a lot more expensive than the worst credit card charges, except for really small amounts.