Final answer:
A broker can typically keep a maximum amount of personal money in his trust account equal to the minimum net capital requirement set by regulatory authorities.
Step-by-step explanation:
In a trust account, a broker can typically keep a maximum amount of personal money equal to the minimum net capital requirement set by the regulatory authorities. The specific amount may vary depending on the country or jurisdiction in which the broker operates.
For example, in the United States, the minimum net capital requirement for brokerage firms is set by the Securities and Exchange Commission (SEC) and the Financial Industry Regulatory Authority (FINRA). As of 2021, the minimum requirement for most broker-dealer firms is $250,000.
It's essential for brokers to segregate their personal funds from client funds to protect the clients' assets and ensure the integrity of the financial system.