Should You Buy Back Your Covered Call Early at 50% Profit? A Clear Answer

The Short Answer: Yes, the 50% Rule Usually Makes Sense

If you have collected 50% of the maximum profit on a covered call, closing the position early is almost always the smarter move. You keep half the premium, you free up your shares for the next trade, and you cut your risk of a sudden reversal wiping out your gains. Most experienced covered-call traders treat the 50% threshold as a standing rule, not a one-time decision.

The logic is simple math. The first half of a covered call's profit comes quickly, driven by time decay (theta) and any drop in implied volatility. The second half takes much longer to collect and carries more risk per day than the first half did. Holding on for that last 50% often means sitting in the trade for 70-80% of the total time — and accepting all the assignment and gap risk that comes with it.

Why Theta Works Against You in the Second Half of the Trade

Theta, the daily time-decay of an option's price, is not linear. It accelerates as expiration approaches, but the bulk of that acceleration happens in the final week or two. For most of the option's life, decay is slow and steady. That means the first 50% of premium erosion happens faster in calendar terms than the second 50%.

Here is a rough breakdown for a 30-day option sold for $1.00:

- Days 1-15: Option loses roughly $0.50 in time value (50% of premium). - Days 16-28: Option loses another $0.35-$0.40. - Final 2 days: Option loses the last $0.10-$0.15.

You collect that first $0.50 in about half the time. Then you wait another two weeks to collect the next $0.35-$0.40, and you carry all the stock risk the entire time. The risk-adjusted return on the second half of the trade is much lower than the first half. The Options Industry Council (OIC) describes this dynamic in its covered-call education materials as one of the core reasons active traders prefer to close positions before expiration.

Worked Example: AAPL Covered Call Closed at 50%

Let's make this concrete. Suppose you own 100 shares of Apple (AAPL) at $195 per share. On March 3, with AAPL trading at $194.80, you sell one April 4 $200 call for $2.40 per share ($240 total premium). Your maximum profit on the call is $240 if AAPL stays below $200 at expiration.

By March 17 — just 14 days into a 32-day trade — AAPL has drifted sideways to $193.50. Implied volatility has ticked down slightly. The $200 call is now trading at $1.18. You can buy it back for $118, locking in $122 of profit ($240 - $118 = $122). That is just over 50% of your maximum gain.

You now have two choices:

1. Hold to expiration. You could collect the remaining $118 over the next 18 days. But AAPL could gap up on earnings news, a product announcement, or a broad market rally. If AAPL jumps to $203, your shares get called away at $200 and you miss $300 of upside. You also spent 18 more days at risk.

2. Close at 50%. You book $122, free up the position, and can sell a new call the same day or the next morning — potentially on a better strike or a different expiration. If you can repeat a similar trade even once more in the same month, your total premium income for the period could exceed what you would have earned by holding.

The second path wins on a risk-adjusted basis in most market conditions.

What Are the Real Risks of Holding to Expiration?

Letting a covered call expire worthless feels satisfying — you keep 100% of the premium and never paid a commission to close. But there are three concrete risks that traders underestimate.

**Assignment risk near expiration.** As expiration approaches and the option moves closer to at-the-money, the chance of early assignment rises. FINRA and the OIC both note that American-style equity options (which cover most US-listed stocks) can be exercised at any time before expiration. A sudden overnight move can trigger assignment when you least expect it. If your shares get called away at a price below current market, you lose that upside permanently.

**Gap risk over weekends and earnings.** A stock can move 5-10% overnight on news. If you are holding a nearly-worthless call into the final week and the stock gaps above your strike, your $0.15 of remaining premium offers almost no protection. You are essentially holding a capped stock position for free — and the cap is the problem.

**Opportunity cost.** Every day you hold a nearly-expired call is a day you cannot sell a new one on the same shares. Over a full year, the difference between 12 complete trade cycles and 10 complete trade cycles (because two trades dragged to expiration) can be hundreds of dollars per 100-share lot.

When Does It Make Sense to Hold Past 50%?

The 50% rule is a guideline, not a law. There are situations where holding longer is reasonable.

**Very low commissions and very small premium.** If you sold a call for $0.30 and it is now worth $0.14, the $16 profit from closing may not justify the round-trip commission cost at some brokerages. In that case, letting it expire worthless is fine — just watch for late assignment risk in the final two days.

**Deep out-of-the-money with no near-term catalysts.** If your call is so far out-of-the-money that delta is near zero and there are no earnings, dividends, or major macro events before expiration, the residual risk is low. You might reasonably hold for the last few cents.

**Tax timing considerations.** In some cases, closing a position early could push a short-term gain into the current tax year when you would prefer it in the next. The IRS treats premiums received from covered calls as short-term capital gains in most cases (see IRS Publication 550 for the qualified covered call rules). Canadian investors should review CRA guidance on options taxation, as the treatment of premiums can differ depending on whether you are considered a trader or investor. Always confirm with a qualified tax professional before making decisions based on tax timing alone.

**You want to hold the stock through a known event.** If you sold a call and then decided you want full upside exposure to an upcoming product launch or index rebalancing, closing the call early restores that upside. This is a strategic reason, not a profit-target reason, but it is valid.

How to Build the 50% Rule Into Your Trading Routine

The easiest way to apply this rule consistently is to set a good-till-cancelled (GTC) buy-to-close limit order the moment you open the covered call. If you sold the call for $2.40, immediately enter a GTC order to buy it back at $1.20. Most major brokerages — TD Ameritrade, Fidelity, Schwab, IBKR — support GTC limit orders on options.

This removes emotion from the decision. You do not have to watch the position every day. When the market moves in your favor and the option decays to your target, the order fills automatically. You get an alert, and you move on to planning the next trade.

Some traders use a 50/21 rule: close at 50% profit OR at 21 days to expiration, whichever comes first. The 21-day threshold is based on the observation, widely discussed in options-trading literature and cited by CBOE education resources, that gamma risk (the rate of change of delta) rises sharply inside three weeks for near-the-money options. Closing at 21 days limits your exposure to that accelerating risk even if the 50% profit target has not been hit yet.

Tracking your results matters. Keep a simple log: entry date, strike, premium collected, close date, premium paid to close, net profit, days held. After 20-30 trades, you will have your own data showing whether the 50% rule is working for your specific stocks and market conditions.

Bottom Line: Efficiency Beats Perfection in Covered-Call Writing

Covered-call writing is an income strategy. The goal is not to squeeze every last cent out of each trade — it is to generate consistent, repeatable income over time with acceptable risk. Holding a covered call from 50% profit to 100% profit doubles your time at risk for a return that is, at best, equal to what you already have in hand.

The traders who build real wealth with covered calls are not the ones who always let options expire worthless. They are the ones who close efficiently, redeploy capital quickly, and compound their premium income across more trade cycles per year. The 50% rule — or the 50/21 rule if you want a time-based backstop — is the most practical tool for doing exactly that.

What does it mean to buy back a covered call early?

Buying back a covered call early means placing a buy-to-close order before the option reaches expiration. You pay a premium to cancel your obligation to sell the shares. The difference between what you received when you sold the call and what you pay to close it is your net profit or loss on the option leg.

Does closing a covered call early trigger a taxable event?

Yes. When you close a covered call by buying it back, the IRS treats the net gain or loss as a short-term capital gain or loss in most situations, reported in the year the position closes. IRS Publication 550 covers the qualified covered call rules that can affect how the holding period of your underlying shares is treated. Canadian investors should check CRA guidance, as options income can be taxed differently depending on your trading activity level.

What is the 50/21 rule for covered calls?

The 50/21 rule means you close a covered call when you have captured 50% of the maximum premium, or when 21 days remain until expiration — whichever happens first. The 21-day threshold is a risk-management backstop because gamma risk accelerates sharply inside three weeks for near-the-money options. CBOE education materials discuss this gamma acceleration as a key reason to manage short options positions actively.

Can I get assigned on a covered call before expiration?

Yes. US-listed equity options are American-style, meaning the buyer can exercise at any time before expiration, not just on the expiration date. FINRA and the OIC both note that early assignment is most likely when an option is deep in-the-money or just before an ex-dividend date. Closing your position early eliminates this risk entirely.

Is it better to let a covered call expire worthless or buy it back?

Letting it expire worthless saves the buy-to-close commission and feels clean, but it keeps you at risk for the full remaining time and delays your next trade. Buying it back at 50% profit frees your shares sooner, lets you sell a new call faster, and reduces assignment and gap risk. For most traders with more than a few dollars of premium remaining, closing early is the better risk-adjusted choice.

How do I set a GTC order to automatically close my covered call at 50% profit?

When you open the covered call, immediately enter a separate buy-to-close limit order at half the premium you received, and set the time-in-force to GTC (good till cancelled). For example, if you sold a call for $2.40, enter a GTC limit order to buy it back at $1.20. Most major brokerages including Fidelity, Schwab, and IBKR support GTC limit orders on single-leg options positions.