I am not trading it at the current stage, just looking at this market . According to the exchange,
Options Margins
Buying options in limit order : Margin = price x multiplier x number of contract
¦ multiplier
(USD options: 10,000, KQ 50 Index Options: 100,000, Options on 3yr KTB Futures: 1,000,000)
Buying options in market order (based on possible maximum value of bought position of the day): Margin = Underlying option margin per contract x number of contract
Selling options:
Margin = (Maximum theoretical price - selling theoretical price) x multiplier x number of contract