Covered Call Bid-Ask Spread Impact On Profitability

Back in 2008, I was sitting in my home office watching the market unravel. I had been trading covered calls for years by then, taught my own stockbroker how they worked when I was still in college, and thought I had most of this figured out. But that year taught me something I had been overlooking: the difference between the price you see and the price you get can make or break a strategy. I was entering orders at the market, getting filled at prices that looked nothing like the quotes on my screen, and wondering why my income was coming up short even when my stock picks were right. That was the year I made execution costs, including bid-ask spreads, a formal part of my trading plan. Not an afterthought. A line item.

Most covered call traders focus on strike selection and expiration dates. They run the math on premium collected and annualized returns. But they rarely account for what happens between the bid and the ask. That gap, the spread, is where market makers extract their toll. And on the wrong stock at the wrong time, it can swallow a meaningful chunk of your profitability before you ever collect a dime of premium.

What the Bid-Ask Spread Actually Costs You

When you sell a covered call, you want to collect premium. The bid is what buyers are willing to pay. The ask is what sellers are demanding. You will almost certainly sell at the bid, or close to it. The difference between those two numbers is the spread, and it represents immediate, unrealized loss the moment your order fills.

Here is a concrete example. A stock trades at $50. The $55 call option shows a bid of $1.00 and an ask of $1.30. That thirty-cent spread is 23% of the premium at the midpoint. If you sell at the bid, you collect $100 per contract. If you could somehow sell at the midpoint, you would collect $115. That fifteen-dollar difference, repeated across dozens of trades per year, compounds into real money. On a portfolio running twenty covered call positions monthly, a thirty-cent average spread sacrifice costs you $3,600 annually. That is not theoretical. That is money that belonged in your account.

The covered call strategy depends on stacking small edges: the right stock, the right market environment, the right strike selection, and the right execution. The spread is one of those edges you can control, or at least minimize, with discipline.

Where Spreads Widen and Why It Matters

Not all options trade with tight spreads. The most liquid names, think large-cap tech and major indices, often show penny-wide spreads on near-the-money strikes. But venture into mid-cap territory, or stocks with average daily volume below a million shares, and spreads can balloon to ten, twenty, fifty cents or more.

Earnings announcements are another spread killer. Market makers widen quotes to protect themselves from gap risk. The same $55 call that showed a $0.10 spread last week might show $0.80 the day before earnings. If you are selling calls into that environment, you are paying a volatility tax you cannot see on your profit-and-loss statement until the trade is done.

Volatility regimes matter too. In the 2020 COVID crash, I watched spreads on normally liquid names triple overnight. Market makers were uncertain. They priced that uncertainty into the spread. Traders who did not adjust their order types, who kept hitting market orders, gave away edge they could not afford to lose.

I learned this the hard way in 2008, and I built it into the Cash Flow Machine system I teach today. Probability stacking means controlling every variable you can. You cannot control where the stock goes. You can control what you pay to play.

How to Minimize Spread Drag on Your Returns

The first and most important tool is the limit order. Never, under any circumstances, enter a covered call sale at the market. Set your limit at the natural midpoint or slightly better, and be patient. The market will often come to you. If it does not, you have learned something valuable about liquidity in that name, and you can move on to a better candidate.

Strike selection around standard multiples helps. The $50, $55, $60 strikes trade more actively than the $52.50s. More activity means tighter spreads. When possible, position your covered calls at these liquidity points.

Time of day matters. Spreads are widest at the open, when overnight information is being digested and market makers are defensive. They tend to narrow mid-session, when flow is more predictable. I rarely place opening orders in the first thirty minutes. The extra few minutes of patience usually reward me with better fills.

Finally, know when to walk away. Some stocks simply do not have options markets worth trading. If the spread on your intended strike is more than 10% of the premium at the midpoint, find another name. The covered call universe is large. There is no reason to accept poor execution.

The David V. Principle: Boring Execution Wins

I have a student named David V. who has been in the Cash Flow Machine program for a little over a year. He is up roughly 47%, and he has never once deviated from his system. He trades in-the-money covered calls exclusively. He enters every order as a limit. He checks spread width before he checks premium. He plays a lot of golf. His results are boring, and boring makes you rich.

David understands something that trips up newer traders. The brain wants excitement. It wants to feel like you are doing something, reacting, seizing opportunity. But in execution, excitement is expensive. The trader who treats every basis point of spread as meaningful, who logs his fills and studies his slippage, compounds an edge that the impatient trader gives away.

I have watched this play out across hundreds of students over fifteen years of teaching. The ones who succeed are not necessarily the ones with the best stock picks. They are the ones with the most disciplined processes. Spread management is part of that discipline.

When Spreads Work in Your Favor

There is one narrow circumstance where wide spreads can benefit the covered call seller. If you are closing a position, buying back a call you previously sold, you want the spread to be wide on the buy side. You want to hit a low ask, or better yet, place a limit order below the ask and let the market come down to you.

This asymmetry, selling on the bid and buying on the ask, is why spread awareness matters in both directions. Your opening trade and your closing trade both interact with the spread. The difference between what you collect and what you pay, net of spread costs, is your true premium captured.

I track this in my own trading. Every position gets logged with the quoted spread at entry and exit. Over time, you build a sense for which names reward you with clean fills and which names cost you. That data informs your watchlist. The stocks with chronic spread problems eventually drop off, replaced by more efficient vehicles.

How much does bid-ask spread typically reduce covered call returns?

On liquid large-cap names, spread drag is often 1-3% of premium. On illiquid mid-caps or around earnings, it can reach 10-30%. A trader who ignores spreads entirely, using market orders on wide quotes, can easily sacrifice 15-20% of annual income to execution costs.

Should I avoid stocks with wide option spreads entirely?

Not necessarily, but you should demand wider implied returns to compensate. If a stock requires accepting a $0.50 spread on a $2.00 premium, you need to believe the underlying prospects justify the extra execution cost. Often, they do not. The covered call strategy works best when liquidity is your ally, not your obstacle.

What is the best order type for selling covered calls?

Limit orders, always. Set your limit at or near the midpoint of the bid-ask spread. If the market does not fill you, adjust or move on. Market orders guarantee you pay the full spread. In a strategy built on income stacking, that guarantee is too expensive.

The covered call bid-ask spread impact on profitability is not the most exciting topic in options trading. It does not have the drama of a 500% Tesla run or the intellectual satisfaction of a perfectly timed market exit. But it is where professional traders separate from amateurs. The money you keep is the money you earn. And the spread is one more place where patience and discipline pay you back.

If you want to build a covered call system that accounts for every edge, including execution, the Cash Flow Machine Options Mentorship walks you through the complete framework I have refined since 2008.

This is education, not financial advice. Past performance is not indicative of future results. Consult a qualified advisor before making investment decisions.