Let Your Covered Call Expire Worthless or Buy It Back? How to Decide

The Short Answer: It Depends on Cost and Risk, Not Habit

If your covered call has dropped to near zero in value, buying it back is usually worth the small cost to free up your flexibility. If it still carries meaningful time value and expiration is days away, letting it expire worthless is often the simpler, cheaper choice. The right move comes down to three things: what it costs to close, how much risk remains, and what you want to do with the stock next.

This is one of the most common decisions covered-call sellers face, and there is no single right answer. What matters is having a clear framework so you are not guessing at the last minute.

What Actually Happens When a Covered Call Expires Worthless

When a call option expires out of the money, it simply ceases to exist. Your brokerage removes it from your account automatically. You keep the full premium you collected when you sold the call, and you keep your shares. No action is required on your part.

For example, say you own 100 shares of Apple (AAPL) and you sold a $195 strike call expiring this Friday when AAPL was trading at $191. You collected $1.40 per share, or $140 total. AAPL closes Friday at $192.50. The call expires worthless. You keep the $140 and your 100 shares. Your cost basis is unchanged, and you are free to sell another call the following Monday.

According to the Options Industry Council (OIC), the majority of options contracts expire worthless or are closed before expiration — only a small percentage result in exercise. So expiration without assignment is a normal, expected outcome for covered-call sellers.

What Does It Cost to Buy Back a Covered Call Early?

Buying back your short call before expiration means placing a buy-to-close order. You pay the current ask price for the option, plus your broker's commission. The difference between what you collected when you sold and what you pay to close is your net profit or loss on the trade.

Here is a concrete example using Microsoft (MSFT). Suppose MSFT is at $415 and you sold a $425 call for $3.20 per share ($320 total) with 21 days to expiration. Two weeks later, MSFT is at $410 and the call is now worth $0.18. You can buy it back for $18 plus a $0.65 commission. You lock in $301.35 in profit and your shares are fully uncapped again. That $18 buyback cost is often called the 'cleanup cost,' and most experienced traders consider it worth paying when the option has lost 85-90% of its value.

The general rule many traders use: if the option is trading at $0.05 to $0.15 or less, the remaining time value is so small that paying to close it is a judgment call based on how much you value the flexibility versus the transaction cost.

When Buying Back Early Makes More Sense

There are specific situations where closing the position early is the smarter move, even if it costs a few dollars.

First, if your stock has moved close to the strike price with several days left, assignment risk rises sharply. A call that is at the money or slightly in the money with two or three days to expiration carries real gamma risk — small moves in the stock can cause the option's delta to swing dramatically. Buying back the call removes that uncertainty.

Second, if you want to sell a new call at a higher strike or a later expiration to collect more premium, you must close the existing position first. This is called rolling, and it requires a buy-to-close followed by a sell-to-open. You cannot layer a second short call on top of the first.

Third, if the stock has dropped significantly and you want to sell a lower-strike call to collect more premium and improve your downside cushion, you need to close the original call first. Waiting for expiration costs you days of potential income.

Fourth, some traders close early simply for peace of mind over a weekend or around a scheduled earnings announcement. CBOE data consistently shows that implied volatility spikes around earnings, which can cause even out-of-the-money calls to reprice sharply. Closing before that event removes the surprise.

The Real Risks of Just Letting It Ride

Letting a covered call expire is not risk-free. Here are the honest risks you should weigh.

Assignment before expiration: American-style options — which is what most US-listed equity options are — can be exercised by the buyer at any time before expiration, not just at expiration. This is called early assignment. It is uncommon for out-of-the-money calls, but it can happen for in-the-money calls, especially when the option has little time value left or when a dividend is approaching. If you are assigned early, your shares are called away at the strike price. The OIC notes that early assignment most often occurs when the extrinsic value of the option drops near zero.

Gap risk on expiration day: Stocks can move sharply in the final hours of trading on expiration Friday. A call that looked safely out of the money at noon can be in the money by the close. If the stock closes even one cent above your strike, the call will typically be auto-exercised by the Options Clearing Corporation (OCC), and your shares will be called away.

Opportunity cost: Every day you hold an open short call is a day you cannot sell a new one at a better strike or expiration. If the option has already decayed to near zero, holding it to expiration for the last few cents of time value may not be worth the lost flexibility.

Tax Considerations: Does Closing Early Change Anything?

For US investors, the IRS treats the premium from a covered call as short-term capital gain in most cases, regardless of whether the call expires worthless or is bought back. The gain is recognized in the tax year the position closes — either at expiration or when you buy it back. The IRS has specific rules under Section 1256 for certain index options, but standard equity covered calls on stocks like AAPL or NVDA do not qualify for that treatment.

One important IRS rule to know: if your covered call is 'deep in the money,' it may be classified as a 'qualified covered call' issue under IRS rules, which can affect the holding period of your underlying shares. FINRA and the IRS both flag this as an area where retail investors sometimes get surprised at tax time. If you are selling calls with strikes well below the current stock price, talk to a tax professional before assuming your long-term holding period on the stock is intact.

For Canadian investors, the CRA treats premiums received from writing covered calls as either income or capital gains depending on the frequency of trading and intent. The CRA has published guidance indicating that investors who write calls occasionally on long-held positions are more likely to be treated as capital gains, while frequent traders may be assessed as business income. Canadian traders should review CRA's IT-479R interpretation bulletin or consult a tax advisor.

The bottom line: buying back early versus waiting for expiration generally does not change your tax treatment on the option itself, but timing can matter for which tax year the gain falls in.

A Simple Decision Framework You Can Use Every Time

Rather than deciding case by case with no structure, use this checklist before each expiration.

Step 1 — Check the remaining value. If the call is worth less than $0.10 and expiration is within two days, the cleanup cost may not be worth it unless you have a specific reason to close early.

Step 2 — Check the distance to strike. If the stock is within 1-2% of your strike price, buy it back. The gamma risk in the final days is not worth the few cents of remaining premium.

Step 3 — Check for upcoming events. Earnings, dividends, or major economic data releases before expiration? Close the call and reassess after the event.

Step 4 — Check your next trade. If you want to roll to a new expiration or strike, you need to close this one first. Do not wait for expiration if you have a better trade ready.

Step 5 — Check the commission math. If your broker charges $0.65 per contract and the option is at $0.08, you are paying $0.65 to capture $8.00 in remaining value. That math usually favors closing. If the option is at $0.50 and expiration is a week away, the math may favor holding.

Using a consistent process like this keeps emotion out of the decision and helps you build a track record you can actually learn from.

What happens if I just do nothing and let my covered call expire?

If the call expires out of the money, it disappears automatically and you keep the full premium with no further action needed. If it expires in the money by even one cent, the Options Clearing Corporation will typically auto-exercise it and your shares will be called away at the strike price. Always check where your stock is trading on expiration day.

Is there a rule of thumb for when to buy back a covered call early?

Many covered-call traders use the 80-90% rule: if the option has lost 80-90% of its original value, they buy it back and redeploy capital into a new position. For example, if you sold a call for $2.00 and it is now at $0.20, buying it back for $20 per contract frees up your position for a new trade. This is a guideline, not a hard rule.

Can I be assigned early on a covered call before expiration?

Yes. US equity options are American-style, meaning the buyer can exercise at any time before expiration, not just on the last day. Early assignment is most likely when your call is deep in the money and has very little time value remaining, or when a dividend is about to be paid. The OIC recommends monitoring in-the-money short calls closely as expiration approaches.

Does buying back a covered call early trigger a wash sale?

Buying back a short call does not by itself trigger a wash sale on the option, since you are closing a short position, not selling a security at a loss and repurchasing it. However, wash sale rules can interact with your underlying stock position in complex ways, particularly if you sell the stock at a loss around the same time. The IRS wash sale rules under Section 1091 are worth reviewing with a tax advisor if you are in a loss situation.

What is the cost to buy back a covered call, and where does it show up?

The cost is the current market price of the option (the ask price) multiplied by 100, plus your broker's commission per contract. This shows up as a debit on your brokerage statement under the buy-to-close transaction. Your net profit on the overall covered-call trade is the original premium collected minus the buyback cost and any commissions paid.

Should I buy back my covered call before an earnings announcement?

Many experienced covered-call sellers close their short calls before earnings because implied volatility tends to spike sharply around those events, which can cause even out-of-the-money calls to reprice higher and increase assignment risk. CBOE data shows that options premiums often expand significantly in the days leading up to earnings. Closing before the announcement removes the uncertainty, though it also means giving up any remaining time value.