Sure, just put your option requests into an Excel formula.
ex.
=long - short
Interesting - but TWS says otherwise:Limited-loss option strategies have the same initial margin and maintenance margin (actually none because you already put up the max you can loose).
https://www.interactivebrokers.com/en/index.php?f=26660
Margins are like condoms, I don't worry about them.
Interesting - but TWS says otherwise:
Naked Puts for the same strike seem to require more margin that vertical bull spreads with a buy leg 10% lower.
It could be a case of illiquid options only (or just the ones that I am looking at) but TWS does not lie.