I would how today's Billionaires would survive if transported to the star trek universe, As far as I understand there is no money
Captain Picard said in ST First Contact, humans are driven by exploration and the pursuit of knowledge.
I am am not sure if there is an episode of TOS that covers money etc. The one reference I can think of is in ST IV The voyage home where they need money so Kirk Sells his glasses.
So they leave money in bank, transport to the 24th century to find rather than accrued interest they have zero money.