Options Wheel TraderWhat Delta Should You Sell Covered Calls At?
October 8, 2026
I Pick Delta Before I Pick the Strike
When I sell a covered call, the first number I look at is delta.
Definition: Delta measures how much an option's price is expected to change when the price of the underlying asset moves by $1.
As one of the core Options Greeks (risk and pricing metrics), delta helps traders measure price sensitivity, gauge directional risk, and estimate the probability of an option expiring profitable. It has a value from 0 to +1 for calls and 0 to -1 for puts (for puts, a negative delta means the option price will increase as the underlying asset price decreases).
Most traders use Delta as a rough estimate of the odds that the option finishes in the money. And an option that finishes in the money means my 100 shares get sold at the strike. A 0.30 delta call sends my shares away about three times out of ten. A 0.50 delta call, closer to five times out of ten.
That is the real decision. The premium is a one-time payment. The shares are the position.
- Higher delta: more cash today, higher odds the shares leave.
- Lower delta: less cash today, higher odds I keep the shares (and continue selling calls).
- Delta is a rough probability, not a promise. A 0.15 delta call can still finish deep in the money if the stock gaps.
Most people sort the chain by premium, sell whatever pays the most, then act surprised when their shares are gone in a rally. Reddit is filled with stories of such regret.
The Strike Is an Exit Price!
Delta and strike are two different decisions.
- Delta answers: how often do I get called away?
- Strike answers: at what price do I sell, and is that price acceptable? (And like "for real" be ok with selling at that price)
The strike has to clear my adjusted cost basis. If past premium has pulled my true cost down to $460 and I sell a $500 call, that is a real profit. If my basis is $540 and I sell a $500 call, I am locking in a loss.
So my order of operations is:
- In general, I would look to sell a call on a day that the stock is green (as it makes for richer premiums).
- Decide the price I would be absolutely willing to sell at.
- Find the call sitting near that strike.
- Check the delta against my bands.
- Compare the credit to the risk of losing the shares.
- Skip the trade if the credit is too small to bother with.
My Delta Bands for Covered Calls
| Delta band | Rough odds of assignment | When I use it |
|---|---|---|
| 0.40 to 0.60 | 40% to 60% | Only when I have already decided to exit the position |
| 0.25 to 0.35 | 25% to 35% | Income mode, and I understand the income:risk tradeoffs |
| 0.17 to 0.25 | 17% to 25% | My default when I have no strong view (often toward the higher end of the band) |
| 0.10 to 0.16 | 10% to 16% | A stock I want to keep for years, like a NVDA position I am not ready to part with |
| Under 0.10 | Under 10% | Almost never. That credit does not pay for the attention. |
Worked Example: A Covered Call on MSFT
MSFT trades at $529.76 today. I own 100 shares with an adjusted cost basis of $505 after a few rounds of the wheel. I would sell at $545 or higher, so I look at three calls with roughly 28 days to expiry.
| Strike | Delta | Credit per contract | Odds of assignment |
|---|---|---|---|
| $525 | 0.55 | $1,450 | 55% |
| $545 | 0.32 | $720 | 32% |
| $560 | 0.16 | $360 | 16% |
Those credits assume premiums of $14.50, $7.20, and $3.60 per share.
Here is how the same three decisions play out across three endings, four weeks later.
| MSFT closes at | Sold $525 call (0.55) | Sold $545 call (0.32) | Sold $560 call (0.16) |
|---|---|---|---|
| $520 | Keep $1,450 | Keep $720 | Keep $360 |
| $570 | Called away. $2,000 gain plus $1,450 credit is $3,450. Holding to $570 was $6,500. | Called away. $4,000 gain plus $720 credit is $4,720. Holding was $6,500. | Not called. Keep $360 and still hold shares worth $6,500. (Free to sell another CC) |
| $495 | Keep $1,450, shares down $3,476 | Keep $720, shares down $3,476 | Keep $360, shares down $3,476 |
None of those strikes is "correct" on its own. The 0.55 delta call paid the most in a flat month and gave up the most in a rally. The 0.16 delta call did the opposite. I pick the row I can live with before I enter the trade.
When I Go Higher or Lower
- Higher, 0.40 and up: I want the position gone, or I am sitting on a large gain and would rather take cash than hold through a bumpy stretch.
- Lower, 0.16 and under: the shares are long-term holds and the call is just rent. A $360 credit on 100 shares will not change my year, and it will not cost me a position I want to keep.
- Around earnings: I go lower or I skip the week. A 0.30 delta call is a 30% assignment chance in an ordinary month. Through earnings that becomes a coin flip as volatility is high around earnings. This is the same reason I watch ex-dividend dates, because a call with dividend in it invites early assignment.
How I Stay Consistent
The scanner has a delta filter, so I set my band once and only look at candidates inside it. The Entry Quality report groups my closed trades by entry delta, which lets me check once a quarter whether my 0.30 to 0.40 calls actually beat my 0.20 to 0.30 calls after fees. Having this data and analysis has been a big help in staying consistent.
What I Do Not Do
- I do not sell a call under my cost basis just because the premium looks good.
- I do not chase the biggest credit and call that income.
- I do not sell a call through earnings on a stock I want to keep.
- I do not sell a 0.05 delta call for $20 and pretend it is a strategy.
Delta will not tell you which strike to sell. It tells you how often the trade ends with your shares sold, and that is the aspect you need to consider and be ok with when taking the trade.
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This article is educational and not investment advice. Options involve risk; read our Terms and consult a professional as needed.