Ok so since money is easy to get (about 2.5b/hr) you can't have more than 2b anyways so I think we need a type of money storage system. Since the ::taxbag command will be hard to code I thought of something simpler. An item in a shop (such as a taxbag, note etc.) that costs 1b and can be sold back to the shop for 1b. Therefore basically making it a way for storing 1b.
Just an idea that I tried to explain my best although I doubt it came out right as it is very late at night
