Originally Posted by
aviators99
It doesn't just "appear" that the Mint is making money -- they are. But you don't really seem to be disputing that. You are correct that the Federal Reserve winds up with an increasing inventory of coins that nobody wants. But your following sentence seems to imply that this means that someone is "paying for it". Are you talking about storage space costs?
The Federal Reserve pays for the coins banks send to them as well as the ongoing storage costs.