Buy back your covered call when it's reached 50-80% of its maximum profit. If you sold a call for $3.00 and it's now worth $0.60, you've captured 80% of the premium. Close it, free up your shares, and sell a new call — don't risk the remaining $0.60 for another 2-3 weeks.

Signal #1: You've Captured 50-80% of the Premium

This is the most important rule. Theta decay isn't linear — options lose value slowly at first, then rapidly in the final week. But that final 20% of profit takes disproportionate time and exposes you to reversal risk.

The math:

  • Sold call for $4.00 on day 1
  • Call worth $0.80 on day 20 (captured 80%)
  • Remaining 10 days to earn $0.80 more
  • Risk: stock rallies and call goes back to $3.00

    • Closing at 80% profit and re-selling a new 30-day call resets your theta clock and often generates more total income than waiting out the last 20%.

    Signal #2: Earnings Are Coming

    If you have a covered call open and the underlying reports earnings before expiration, you have a decision:

  • Close the call before earnings if you want to participate in a potential gap up
  • Keep the call if you're comfortable with the strike as your max exit price

    • The IV spike before earnings will make your call more expensive to buy back. If you're at 60%+ profit, close it before IV expansion makes the buyback costlier.

    Signal #3: The Stock Is Dropping Fast

    Your covered call provides minimal protection. If the stock drops sharply:

  • The call becomes nearly worthless (good — you can buy it back for pennies)
  • But your shares are losing significant value (bad)

    • Buy back the call for $0.05-$0.10, then decide: sell the stock to cut losses, or sell a new call at a lower strike to collect more premium. Don't sit paralyzed waiting for expiration while the stock bleeds.

    Signal #4: You Want to Sell the Underlying

    Maybe your thesis changed, or a better opportunity appeared. You can't sell your shares while a covered call is open (they're collateral). To exit:

  • Buy back the covered call
  • Sell your shares
  • Or sell shares and the call simultaneously as a "buy-write close"

    • Some brokers let you close both legs in a single order, which can save on execution.

    The 21 DTE Rule

    Many professional covered call sellers close positions at 21 days to expiration regardless of profit level. Here's why:

  • Gamma risk increases as expiration nears
  • A stock can blow through your strike in the final week
  • Rolling becomes harder with less time value

    • At 21 DTE, evaluate: if you're at 50%+ profit, close. If you're at a loss on the call (stock has moved up), decide whether to roll or accept assignment.

    OptionsPilot's Management Alerts

    OptionsPilot tracks your open covered call positions and alerts you when calls hit your profit target percentage. Set it to notify you at 50%, 65%, or 80% profit — whichever matches your management style. This removes the guesswork and helps you close winners consistently.

    What If You're at a Loss on the Call?

    If the stock rallied hard and your call is now worth more than you sold it for, you have three choices:

  • Let it expire and accept assignment — you sell at the strike + premium, which may still be profitable
  • Roll up and out — buy back the call and sell a higher strike with a later expiration to collect a net credit
  • Buy back the call at a loss — take the hit on the option and keep your shares for further upside

    • The right choice depends on your conviction in the stock. If you think the rally is temporary, rolling buys you time. If the stock has fundamentally broken out, accepting assignment might be best.