Yes I have done so on both accounts. The reality is, TD only requires difference in strike prices minus credit received as margin for credit spreads. Whereas IB does not apply credit received to the trade, thus margin is distance between strikes only. It is an expensive way of doing business. I want to open an account with TD, but since I live in Ireland I cannot. So I am stuck with IB and their ridiculous margin calculations.It is synthetically the same using puts. Try that on both brokers and see what you get.
