Can I sell vertical spreads on margin?

Not really margin - it would be cash in your account.
What exactly do you think margin is? It's the SMA in your account from cash or marginable securities.

I suggest that you Google "Margin Requirement Credit Spread" and read about it. "Not really" is actually a really. :)
 
  • You can't trade options on margin.

Ummm, not really.

Per the CBOE: For purchases of puts or calls with more than 9 months until expiration, deposit / maintain 75% of the total cost / option current market value. When time to expiration reaches 9 months, the option no longer has value for margin purposes. Purchases of puts or calls with 9 months or less until expiration must be paid for in full.
 
yea, that's why I don't trade on margin, but it's nice to know it's there if you ever need it and I would never use more than half of the buying power.
 
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