People generally don't carry large sums of cash, but there are a number of cases where one might. People who are paranoid about banks, for example, or people w

People generally don't carry large sums of cash, but there are a number of cases where one might. People who are paranoid about banks, for example, or people who cannot, for one reason or another, use a bank account without raising eyebrows. Possibly the most innocuous example I can think of would be someone who is paid mostly in cash tips, and does not put them in the bank to avoid any paper trail requiring taxes. If they then paid their living expenses entirely out of their "base" wages, they could accumulate a substantial under-the-table pile of money.