Cash has hidden costs as well. It usually means that once you have enough of it, you have to pay someone to take it to the bank and deposit it. You also need to

Cash has hidden costs as well. It usually means that once you have enough of it, you have to pay someone to take it to the bank and deposit it. You also need to securely store it on the premises, and you usually (except in some industries) can't use it to pay vendors until it is deposited.