What is annualized premium, and why does it mislead?
In one line: Annualized premium is one option's premium, divided by the cash behind it, then scaled up to a full year as if the same trade repeated with the same result.
How it works
Annualized premium is a way to compare options with different expiries. You take the premium you collect, divide it by the cash set aside, then scale it up to 365 days.
The formula: (premium ÷ collateral) × (365 ÷ days to expiry).
A 30-day trade gets multiplied by about 12. A 7-day trade gets multiplied by about 52. That's why a tiny weekly premium can "annualize" to a huge number.
The number is useful for one thing: comparing two trades side by side. It is not a forecast. It assumes you repeat the trade every month, the stock never gets assigned, and nothing ever goes wrong. In the wheel strategy, something goes wrong often enough to matter.
An example (hypothetical)
An illustration, not a trade idea. Made-up stock XYZ trades at $50. You sell a 30-day Put option with a $45 Strike price for $0.90. You collect $90 and set aside $4,500.
The math: $90 ÷ $4,500 = 2% for 30 days. Times 12 gives an annualized figure of about 24%.
Now the month the formula ignores. XYZ reports bad news and drops to $38 by expiry. You're assigned 100 shares at $45.
| Month | What happened | Result |
|---|---|---|
| Month 1 | Put expired, stock stayed at $50 | +$90 |
| Month 2 | Put expired, stock drifted to $49 | +$90 |
| Month 3 | Stock fell to $38, assigned at $45 | +$90 on premium, −$700 on shares = −$610 |
| Three months total | −$430 |
Three months of a "24% annualized" trade, and you're down $430. The annualized number was never wrong as arithmetic. It just described a world where month 3 doesn't happen.
Why it matters for sellers
Sellers chase annualized premium the way buyers chase hot tips. The highest numbers always belong to the shortest expiries and the shakiest stocks, because high Implied volatility means the market expects big moves. A fat annualized figure is often a warning, not a reward.
Two habits keep the number honest:
- Use it only to compare two expiries on the same stock. Never use it to compare a calm stock with a wild one.
- Next to every annualized figure, write the loss if the stock falls 20%. That second number is the one your account will feel.
Also note the small print: the multiplier assumes you can redo the trade the day the last one ends, at the same premium. After a drop, premiums change, your cash is tied up in shares, and the clean monthly loop stops.
Questions
How do you calculate annualized premium?
Divide the premium by the cash or shares behind the trade. Then multiply by 365 and divide by the days to expiry. A $90 premium on $4,500 for 30 days works out to about 24% annualized.
Is annualized premium the same as return?
No. It's a what-if that assumes the trade repeats all year with no losses and no assignment. A single bad month, like the one in the example above, can erase many months of premium.
Why does a weekly option show a higher annualized premium?
Because the multiplier is bigger: about 52 instead of 12. The premium per week is small, but the formula scales it hard. Weeklies also give the stock less time to recover before expiry, so the risk of assignment rises too.
The Options Wheel System · $99 · one payment
Learn the whole wheel, in order — then use it for life.
22 plain-English modules from complete beginner to running the wheel: covered calls, cash-secured puts, assignment, rolling, the math and the risk rules — with a scored quiz after every part and a daily deals board that applies the same rules to real markets.
See What’s Inside the Course One payment · Lifetime access · Education only, not adviceNot sure the wheel is for you?
Take the 2-minute trader test Try everything free first — the whole library costs nothing. · Try our free TradingView indicators (they work in the TradingView phone app)One chart idea a day, in plain English. Follow along: