Cash equal to strike × 100 per contract, plus a short put
Obligation you sold
To sell your shares at the call strike if assigned
To buy the shares at the put strike if assigned
Capital required
The share price × 100, which can be far more than the strike you sold
Roughly the strike × 100 (or the broker’s margin requirement)
Max profit at expiry
Credit + (strike − your share cost), capped once price is above the strike
The credit, capped once price is above the put strike
Loss shape
You keep the shares as they fall — the loss is the stock’s, offset by the credit
You end up owning the shares below the strike — the loss is the stock’s, offset by the credit
What you give up
Upside above the strike: the shares are called away
Nothing above the strike — the put expires and you keep the premium and the cash
Income you keep while waiting
Dividends, if the shares pay them and you hold through the record date
None — the cash earns whatever the account pays on cash
If assigned
Shares sold, position closed, cash returned
Shares bought, and you now own stock that needs a plan (a covered call is the usual next step)
Voting and control
You hold the shares, so you keep the vote until called away
No shares until assignment, so no vote
Every row is the structure held to expiry unless stated otherwise.
Before expiry the two behave differently in ways the table cannot show — that is what the
sections below are for.
Why the payoff charts look like twins
A covered call and a cash-secured put at the same strike and expiry have nearly the same payoff profile at expiration. The intuition is put-call parity: selling the right to sell you shares at a strike, and selling the right to buy your shares at that same strike, are two ways of taking the same side of the same bet with the same capital at risk. The chart is not identical, but it rhymes, and the difference in return between them is close to the difference in the cash you have to put up.
What is genuinely different is the path. The covered call starts with shares already in the account, so the position is exposed to the stock from the first minute and the premium is a partial offset. The cash-secured put starts flat: nothing happens at all unless the stock falls to the strike, and if it does, you buy shares at a price you chose in advance.
The capital difference is the real fork
A covered call requires the shares. On a high-priced underlying that is a large commitment, and the credit collected is a small fraction of it. A cash-secured put on the same strike requires the strike price in cash — usually less than the share price — for the same credit. That is why the put is the more common entry point for small accounts, and it is the first leg of the wheel for exactly this reason.
The cost is that you have committed cash that earns nothing while it waits, and you have committed to buy the stock at the strike whether or not you still want it by then. If the underlying falls hard, the put does what you asked: it buys shares at the strike, above the market. The credit you collected is a small offset to that, not a defence against it.
Covered call: capital is in shares, income is premium plus dividends, upside is capped.
Cash-secured put: capital is in cash, income is the premium only, you may end up long the stock.
Both: the credit is small relative to the risk, which is the cost that advertising usually omits.
Which one fits which situation
Hold the shares already and want to be paid for a level you would be content to sell at: the covered call. Want to be paid to wait for a price you would be happy to buy at, without owning anything in the meantime: the cash-secured put. Those are different intentions, and the chart’s similarity can hide that.
If the answer is "either, I just want the income", the honest framing is that both are the same trade with different collateral, and the deciding factors are tax treatment, dividends, and whether you want the shares. Those are account-specific, and they matter more than the last few cents of premium.
Questions
Are a covered call and a cash-secured put the same trade?
At the same strike and expiry they have a very similar payoff at expiration — put-call parity makes them near-equivalent positions. They differ in what has to sit in the account (shares versus cash), whether you collect dividends, whether you can vote, and which way assignment moves you.
Which one requires more capital?
Usually the covered call, because 100 shares of a high-priced stock cost more than the strike × 100 cash a put would require. On a low-priced stock the gap narrows or reverses. Neither is cheap in absolute terms: both are 100-share-sized positions.
What happens if the stock drops in both cases?
You keep the loss on the shares. In the covered call you already own them and their value falls, partly offset by the credit. In the cash-secured put you are assigned the shares at the strike and then own them at a price above the market, partly offset by the credit. The put’s version feels worse because the purchase is involuntary, but the arithmetic is close.
Does the credit protect me?
It lowers your effective cost basis by the premium, which is a small cushion, not protection. On a 1% credit against a 10% drop, the position is still down roughly 9%. Sizing and the choice of underlying do the actual risk work.