You can visit a bank and deposit money. A bank paying daily interest of 0.001% on every 1000 gold you leave in the bank.
Example: If you deposited 1000gp in the bank, you would earn 1gp daily as interest. So the more you deposit, the more you can earn.
You can decide not to use the bank, and when players inspect you – you can look all ‘pimpin’ with a ton of change on you 🙂