Annualized return is the number most option sellers get wrong

A cash-secured put pays you to stand ready to buy shares you already wanted, at a price you already liked, with cash you already set aside. That sentence is the whole mechanic. The trouble starts when the premium gets dressed up as a year.

You sell a put. The account shows a credit. Someone divides that credit by the cash at risk and gets a small percentage. Then they multiply by twelve, or by 365 over the days to expiration, and the small percentage becomes a large one. A 2 percent premium becomes a 24 percent year. Screenshots circulate. People size an account as if the year were a salary.

It is not a salary. It is a short cycle. Short cycles do not stack into years without gaps, losses, assignment, and idle cash. Annualizing a calm month as if it were a job is how accounts get built for weather that does not last.

The arithmetic on one cash-secured put

Take a hypothetical stock I will call Riverlyn, ticker RLYN. Suppose shares last traded at 40. You like the company at 40. You are willing to own it at 40. You sell one 30-day cash-secured put with a 40 strike and collect 0.80 a share. That is 80 dollars of premium on one contract. You set aside 4,000 dollars in cash to buy 100 shares if you are assigned.

Return on the cash at risk for this cycle:

80 / 4000 = 0.02 = 2 percent for 30 days

That 2 percent is real for this cycle if the put expires worthless and you keep the cash. It is the honest number. The dishonest number is what comes next.

Naive annualized return = 0.02 × (365 / 30) ≈ 0.243 = 24.3 percent

The other popular costume is simpler and worse: 2 percent times twelve months equals 24 percent. Same theater. Different prop. Both treat a 30-day paycheck as a year of identical paychecks with no missed shifts.

Why 2 percent a month is not a 24 percent year

You cannot assume twelve identical months. The bid is not a salary. Some months there is no put you would sell. Some months the premium that looks fat is fat because the tape is ugly. Ugly tape is not extra pay. Ugly tape is extra risk wearing a premium costume.

Assignment ends the put. If RLYN closes below 40 and you buy 100 shares, you are no longer a put seller sitting on 4,000 cash. You are a stockholder. The next income, if you want it, is a covered call or a dividend the company may or may not pay. That is a different trade. Counting the original 2 percent as if it still compounds on the same 4,000 is fiction.

A losing month is not a 2 percent event with a minus sign. The stock can gap. Cash-secured puts have defined risk in the textbook sense: you might own shares at the strike, and you cannot lose more than strike minus premium, before fees and taxes. Defined is not small. A gap from 40 toward 20 on a name you liked at 40 is a hole in the year that twelve winning months do not paper over in a screenshot.

Idle cash is the quiet leak. After expiration you wait for a strike you like. After assignment you wait for a call you would sell. After a scare you sit on your hands, which is often correct. Sitting is not 24 percent. The naive annualizer assumes you are always in a trade. Real accounts are not.

Fees, taxes, and the spread are the rest of the costume. A credit on the screen is not the credit in the account after the bid-ask and the commission. Short-term gains, if you have them, are not long-term stories. I will not do your tax return. I will tell you that a 24 percent flyer that ignores friction is a flyer.

A better way to talk about the paycheck

Report the cycle. 2 percent for 30 days on 4,000 dollars of cash, hypothetical RLYN, put expired worthless. That sentence can be true. “I make 24 percent a year selling puts” cannot be true on the back of one month.

If you want a yearly figure, build it from a year. Add the premiums you kept. Subtract the losses you took. Subtract the cash that sat. Divide by the average cash you actually had at risk, not by the cash you wish had been at risk every day. The number will be smaller than the costume. Smaller and true is usable. A costume is how people oversize.

This is the same error physicians make with a freedom number. They annualize a feeling. I wrote the money version in Your freedom number is smaller than you think. A year of spending is a year. A month of premium is a month. Do not let a multiplier do your thinking.

1. Write premium over cash at risk for this expiration, not for a fantasy year.
2. Ask whether you would buy the shares at the strike with cash you actually have.
3. Ask what happens to the plan if you are assigned and the next month has no clean call.
4. Size the trade so one ugly week does not end the account.
5. Confirm every figure at your own broker before you sell anything.

What the scanner is for

The options scanner on this site scores a cash-secured put or a covered call against rules from The Premium Collector. It is a desk, not a signal service. It will not pick RLYN or any live ticker for you. It will not promise a yearly rate. It will help you see whether this expiration is a decent moment to collect premium under defined-risk rules.

Use it as a second look after you have already decided you would own the shares. If you would not own the shares, you have no business selling the put. If you already own the shares and would not mind selling them at the call strike, the covered call is the other side of the same job: getting paid to stand ready.

I will not name a broker. I will not name a live company. I will not tell you a good annualized return to target. Higher premium usually means a closer strike, less time, or a richer implied volatility. Those are risk settings. They are not a raise.

Be the house, not the lottery ticket. The house still has a bad night. Size for the night, not for the flyer.

Hospital medicine has a version of this costume. A rapid response can look like twelve tasks stacked into a year of competence. It is ten minutes. Think in the minutes you actually have. I wrote that for the floor in The first ten minutes of a rapid response. Selling puts is the same discipline in an account. Report the cycle. Leave a margin. Do not annualize a calm hour into a career.

If you want the method at book length, read The Premium Collector. Then run a ticker you already like through the scanner. Then confirm the quote where you actually trade. The 2 percent is a cycle. The 24 percent is a story. Trade the cycle. Do not live inside the story.