The maximum Leverage available for trading on BTCUSD(Bitcoin vs US Dollar) is 1:3.
Thus the margin requirement for the trading is 33.3%.
In case you are confused with the calculation, you can use FBS’s “Forex Calculator” for Free on the official website.
Alternatively, you may open a Demo trading account and see the numbers in real-time with the ream market rate.
Note that Stop Out(liquidation of all positions) occurs at 20% of margin %.