Do You Need a Margin Account to Trade Options?

The order ticket comes back with a short line in red: this strategy requires a margin account. You tried a put spread. The account is cash. The same account would have let you buy either leg on its own.

That split runs through the whole question. What decides it is whether the position could leave you owing the broker money.

What can you do in a cash account?

Buy calls and buy puts. Your loss stops at what you paid. The broker has nothing to lend and nothing to chase. You still need options approval, which comes from an application where you describe your experience and finances, and the broker assigns a level that decides which strategies you can use.

Covered calls and cash-secured puts are often allowed in a cash account too. A covered call is backed by 100 shares you already own. A cash-secured put is backed by cash held against the strike: a put with a hypothetical $50 strike ties up $5,000 per contract, which is the price you would pay if the shares were put to you. Neither position involves a loan. Firms differ on both. Check which approval level covers them.

The break-even on a bought call is the strike plus the premium. On a hypothetical $50 strike bought for $3.40, that is $53.40 at expiration, and the options break-even calculator does the sum for any strike and premium.

What needs a margin account?

Spreads and anything uncovered. Approval levels climb with the risk. Spreads usually sit in the middle of a broker’s ladder, and uncovered writing sits at the top.

A spread pairs a bought option with a sold one. Your risk is defined, yet the broker still has to hold collateral against the leg you sold, and it treats that collateral as a margin requirement. Uncovered selling goes further. A naked call has no cap on the loss, and a naked put can cost nearly the full strike value if the stock collapses, so brokers require a margin account, a high approval level and a requirement that moves with the underlying price. How that works for a put is set out under naked put.

That moving requirement is the subject of short puts: the margin requirement moves, which follows one position through a falling market.

Can you borrow to buy options?

Mostly not. Options with nine months or less until expiration have no loan value, so they must be paid for in full, whatever kind of account holds them. FINRA allows limited loan value on listed options with more than nine months to run. Brokers decide whether to offer it, and many set their own terms.

So a margin account does not make an ordinary option purchase any cheaper. The $680 for two calls costs $680 in either account. What margin changes is what you can sell, and how much collateral the broker wants against it.

Does a cash account have its own limits?

Yes. Trades in a cash account must be paid for with settled funds. Buying an option with proceeds from a sale that has not settled yet, then selling before the cash arrives, can break Regulation T’s rules on cash accounts and lead the broker to restrict the account for a period. Anyone trading actively in a cash account should know, on any given morning, exactly how much of the balance has settled and how much is still in transit from a sale.

Which account should you use?

If you only buy calls and puts, or write covered calls, a cash account can do the job and keeps you from carrying a margin loan by accident. If you want spreads, you need margin.

A margin account also brings a loan facility you may never mean to use. It is easy to drift into a debit balance by buying before a deposit clears or by being assigned on a short put you expected to expire worthless, and that is a sound reason for anyone who only ever buys options to keep them in a cash account, where the broker simply rejects a trade the cash cannot cover.

Some traders compare a deep in-the-money call with buying stock on margin as two ways to get leverage, and that comparison is worked through in deep in-the-money call versus margin. More on strategies and approval sits in the options section.