Offer your thoughts or opinion on the input financial query or topic using your financial background.

Do the proceeds from selling an option immediately convert to buying power in a margin account?
I'd say yes, and hope that my anecdotal evidence serves as proof. My IRA is not a margin account. It can't be.  I attempt to create a covered call, buying a stock at say $20, and selling a call for $4, for net $16 cost. The account only had $1610 at the time, and the trades go through just fine. Yes, I needed to enter as a limit order, at the same time, a single order with the $16 debit limit.  If this is not enough proof, I'd be curious - why not? The option proceeds must clear, of course, which it does.