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How to pick a covered call strike: delta, cushion and the price you'd sell at

Pick a covered call strike in three steps: a price you'd be glad to sell at, above what you paid, then check its delta to see how likely it is to be reached. Many sellers land near 0.30 delta. That's a rule of thumb, not a rule.

Options guide · 8-minute read · Updated 2026-10-26

Start with the price, not the premium

The strike is the price you agree to sell your shares at. So the first question isn't "which strike pays most?" It's "at what price would I be glad to sell?"

Two hard limits come before anything else:

1. At or above what you paid (your cost after premiums). A strike below that can lock in a loss if you're called away. See the strike-below-cost trap.
2. Above today's price, unless you want to sell soon. A strike below the price is "in the money" and is likely to be called away.

Inside those limits, you're choosing how much upside to give up and how much premium to take. In the wheel strategy, this is the call leg after you've been assigned.

What delta tells you

Delta is a column in the Options chain. For a call, it runs from 0 to 1. It shows how much the option's price moves when the stock moves $1.

Sellers also read it as a rough chance the call ends in the money. A 0.30 delta call is priced as if there's about a 30% chance the stock ends above that strike. It's an estimate from the market, not a forecast. Our Greeks guide explains why the two ideas line up.

The 30-delta habit

Many covered-call sellers start near 0.30 delta at 30 to 45 days. It's a middle ground: a meaningful premium, but the stock has room to rise before it's capped.

That's a habit some people find useful, not a law. A stock you'd hate to lose might suit 0.15. A stock you're happy to sell might suit 0.40. Let the "price I'd sell at" question decide first. Use delta to check how likely that price is.

Every strike, every outcome (an illustration, not a trade idea)

You own 100 shares of a made-up stock, XYZ, bought at $50. XYZ is at $50 today. Here are four 35-day calls.

"Cushion" here is how far the stock can fall before you're below break-even, per share.

Read the two right-hand columns together:

• On a drop to $40, every strike loses. The best one, $52, loses $820. The worst, $60, loses $975. The gap between them is only $155.
• On a jump to $65, the gap is much bigger. $52 makes $380. $60 makes $1,025.

That's the honest trade-off. A closer strike buys a slightly bigger cushion and pays for it with a much lower ceiling. No strike protects you from a big drop.

Cushion is small, whichever strike you pick

People pick closer strikes "for protection." The table shows the problem. The extra protection from $55 to $52 is $0.80 a share. The stock fell $10.

The real protection for a covered call is the size of the share position and your exit for it. Ask: "If XYZ falls to $40, what's my plan?" Answer that before you choose a strike.

How the date changes the strike

The same strike pays more with more time, and its delta rises as expiry gets further. Shorter dates give smaller premiums and less room. Longer ones give more, but you're capped for longer.

A 0.30 delta strike at 7 days is close to the price. At 45 days, it's further away. So "0.30 delta" isn't one strike. It's a different strike for every date. See covered call expiration selection.

A quick way to choose

1. Write the price you'd be glad to sell at. Keep it at or above your cost.
2. Find the date you want, often 30 to 45 days out.
3. Look at that strike's delta. If it's over 0.50, it's likely to be called. If it's under 0.10, the premium may barely cover fees.
4. Check the bid-ask gap. A wide gap on a quiet strike means a worse fill. Pick a nearby strike with more Open interest.
5. Check the earnings and ex-dividend dates. Either one can change the odds inside the trade.

If you'd like to split the choice, you can sell different strikes on different lots. See laddering covered calls.

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