What is the minimum amount required for Options trading?

The minimum money required for buying an Option would be the premium paid in addition to brokerage and other charges. Options are available in lot sizes which varies from stock to stock. So, you would need to pay a premium for 1 lot minimum, whatever be the number of shares in it. While selling an Option, you would need to maintain a margin money in your account as decided by your broker and exchange. If you are just starting on Options trading then it is advisable to start small, get some authority on trading and then only invest higher amount.