Maximum lots in one order in USD/INR

  1. What is the maximum number of lots I can buy or sell in USD/INR futures and options in each order?

  2. What is the margin required for selling 1 lot of USD/INR options?

  1. 6% of the total open interest or USD 10 million, whichever is higher. Check this link for more.
  2. You can check the margin requirements using the Zerodha margin calculator.