How to Screen Covered Calls by Premium Yield Percentage to Find the Highest Income Options

The Short Answer: What Premium Yield Is and How to Filter for It

To filter covered calls by premium yield, divide the option premium you collect by the current stock price, then annualize that number. Most brokerage screeners and free tools like the CBOE's options data pages let you sort by this metric directly. The highest-yielding calls are almost always on volatile stocks — and that volatility cuts both ways.

Premium yield (sometimes called static return or cash yield) is the simplest way to compare covered call income across different stocks and strike prices. A $2.50 premium on a $50 stock is a 5% yield for that period. A $1.00 premium on a $100 stock is only 1%. Without this percentage view, you are comparing apples to oranges.

How to Calculate Premium Yield Step by Step

The core formula has two parts: the raw yield and the annualized yield.

**Raw (period) yield:** Premium collected ÷ Stock price × 100

**Annualized yield:** Raw yield × (365 ÷ Days to expiration)

Let's use a real example. Suppose AAPL is trading at $213.00. You own 100 shares and you look at the 30-day, $220 out-of-the-money call. The bid on that call is $2.10.

- Raw yield: $2.10 ÷ $213.00 = 0.99% for 30 days - Annualized yield: 0.99% × (365 ÷ 30) = approximately 12.0% annualized

Now compare that to NVDA trading at $875.00. A 30-day $900 call might show a bid of $18.50.

- Raw yield: $18.50 ÷ $875.00 = 2.11% for 30 days - Annualized yield: 2.11% × (365 ÷ 30) = approximately 25.7% annualized

NVDA's annualized yield looks more than twice as attractive. But before you chase it, read the risk section below — that higher number is telling you something important about expected volatility.

Why High Yield Is Not the Same as High Return

This is the most important concept in this entire article. The options market is efficient. A call that pays a 25% annualized yield does so because the market believes the underlying stock could move 25% or more in a year. The premium is compensation for the risk you are taking as the stock owner, not free money.

Here is what can go wrong when you chase the highest yield:

1. **Stock drops sharply.** You keep the premium, but your shares lose far more value. On NVDA, a $18.50 premium does not protect you much if the stock falls $80. 2. **You get called away too soon.** If the stock rallies hard, your shares get assigned at the strike price and you miss the upside above that level. 3. **Bid-ask spreads eat your yield.** High-volatility options often have wide spreads. If the bid is $18.50 but the ask is $21.00, filling at the midpoint costs you real money. 4. **Earnings surprises.** Stocks with high implied volatility often have earnings events inside the option window. The CBOE and OIC both note that selling calls over earnings dramatically changes the risk profile.

A reasonable yield target for most retail covered-call sellers is 1% to 3% per month (roughly 12% to 36% annualized) on stocks you are comfortable holding long-term. Anything above that range deserves extra scrutiny.

How to Build a Premium Yield Screen in Four Steps

You do not need expensive software. Most major US and Canadian brokerages — TD Ameritrade/thinkorswim, Fidelity, Schwab, Interactive Brokers, and TD Direct Investing in Canada — have built-in options screeners. Here is a repeatable four-step process.

**Step 1: Start with stocks you already own or would own.** Do not buy a stock just because its covered call yield looks high. FINRA reminds retail investors that covered calls do not eliminate downside risk in the underlying position. Your first filter is your own conviction in the stock.

**Step 2: Set your expiration window.** Most income-focused traders target 21 to 45 days to expiration (DTE). This range captures the steepest part of time decay (theta) without locking up capital too long. In your screener, filter for options expiring in this window.

**Step 3: Filter by delta to control assignment risk.** Delta approximates the probability that the option finishes in the money. A delta of 0.20 to 0.35 is a common sweet spot — enough premium to matter, low enough that assignment is not the most likely outcome. Set your screener to show only calls with delta between 0.15 and 0.40.

**Step 4: Sort by annualized premium yield, then check open interest.** Once your list is filtered, sort descending by annualized yield. Then look at open interest and daily volume. The OIC recommends trading options with open interest of at least 500 contracts and a tight bid-ask spread to ensure you can enter and exit at a fair price. Ignore any option with fewer than 100 contracts of open interest regardless of how attractive the yield looks.

A quick worked screen: You run this on SPY (currently around $530). A 30-day $545 call (delta ~0.25) might show a bid of $3.80. - Raw yield: $3.80 ÷ $530 = 0.72% - Annualized: 0.72% × (365 ÷ 30) = 8.7%

That is a lower yield than NVDA, but SPY is a diversified index ETF. The downside risk is structurally lower. For many investors, 8-9% annualized on a position they plan to hold anyway is a very good trade.

Tax Considerations That Affect Your Real Yield

Gross premium yield is not what you keep. Tax treatment matters and it differs between the US and Canada.

**US investors:** The IRS treats covered call premiums as short-term capital gains in most cases, taxed at ordinary income rates. However, if the call is a "qualified covered call" as defined under IRS rules, it may not affect the holding period of your shares. Selling an in-the-money call or a call with less than 30 days to expiration on a stock held less than a year can suspend your long-term holding period clock. Consult a tax professional and review IRS Publication 550 for details.

**Canadian investors:** The CRA generally treats covered call premiums as capital gains or income depending on your trading frequency and intent. Active traders may have premiums taxed as business income at full marginal rates. The CRA's Interpretation Bulletin IT-479R covers securities transactions. Canadian investors in registered accounts (TFSA, RRSP) can sell covered calls on eligible securities without immediate tax consequences, which meaningfully improves after-tax yield.

The practical takeaway: a 12% gross annualized yield in a taxable US account might be 8% after federal tax for someone in the 32% bracket. Run your after-tax numbers before comparing strategies.

Common Screening Mistakes to Avoid

Even experienced traders make these errors when filtering by yield.

**Mistake 1: Comparing yields across different expiration lengths without annualizing.** A 2% premium on a 60-day option is not better than a 1.5% premium on a 30-day option. Annualize both before comparing.

**Mistake 2: Ignoring implied volatility rank (IVR).** Premium yield is high partly because implied volatility is high. If a stock's IVR is above 80 — meaning its current IV is near the top of its 52-week range — that often means a news event or earnings is coming. Selling into elevated IV can be smart, but you need to know why IV is elevated.

**Mistake 3: Using the ask price instead of the bid.** You sell at the bid (or try to fill at the midpoint). Calculating yield on the ask overstates what you will actually collect.

**Mistake 4: Forgetting about commissions on small accounts.** If you own 100 shares of a $20 stock and collect $0.30 in premium, that is $30 gross. A $0.65 per-contract commission takes 2.2% of your gross income immediately. On small positions, commissions can cut your effective yield by 10% to 20%.

**Mistake 5: Screening for yield without checking the earnings calendar.** Many brokerages and free sites like the CBOE's earnings calendar show upcoming earnings dates. Selling a covered call that expires after an earnings announcement dramatically changes your risk. The implied move priced into the option is often 5% to 10% or more for high-volatility names.

Putting It All Together: A Simple Weekly Routine

Here is a practical routine you can run in under 30 minutes each week.

1. **List your holdings.** Write down every stock or ETF you own where you are not already in a covered call position. 2. **Check earnings dates.** Remove any stock with earnings inside your target expiration window unless you have a specific strategy for that. 3. **Run the four-step screen** described above: expiration 21-45 DTE, delta 0.15-0.40, open interest above 500, sort by annualized yield. 4. **Calculate after-tax yield** for your top three candidates using your marginal tax rate. 5. **Check the bid-ask spread.** If the spread is wider than 10% of the midpoint price, skip it. 6. **Place limit orders at the midpoint** or one cent below. Do not sell at the bid unless the market is moving against you.

This process keeps you disciplined. You are not chasing the single highest number on a screen. You are finding the best risk-adjusted yield on positions you already believe in — which is exactly what covered calls are designed to do.

What is a good premium yield percentage for a covered call?

Most retail covered-call traders target 1% to 3% per month in premium yield, which works out to roughly 12% to 36% annualized. Yields above that range are possible but usually signal higher volatility and greater downside risk in the underlying stock. The right target depends on your tax situation, your conviction in the stock, and how much assignment risk you are willing to accept.

How do I annualize a covered call premium yield?

Divide the premium by the stock price to get the raw period yield, then multiply by 365 divided by the number of days to expiration. For example, a $2.10 premium on a $213 stock with 30 days to expiration gives a raw yield of 0.99%, which annualizes to about 12%. Always annualize before comparing options with different expiration dates.

Which brokerage screeners let me filter covered calls by yield?

Thinkorswim (TD Ameritrade/Schwab), Fidelity's options screener, Interactive Brokers, and tastytrade all allow filtering by premium yield or return on capital. Many Canadian brokerages including TD Direct Investing also offer options chain sorting tools. The CBOE's free data pages provide implied volatility and premium data you can use to calculate yield manually.

Does selling a high-yield covered call protect me if the stock drops?

No — the premium provides only limited downside cushion. If you collect a $2.10 premium on a $213 stock and the stock falls to $190, you still lose roughly $20.90 per share net of the premium. The OIC and FINRA both emphasize that covered calls reduce cost basis slightly but do not hedge significant downside moves. Only sell covered calls on stocks you are comfortable holding through a decline.

How does the IRS tax covered call premiums in the US?

The IRS generally treats covered call premiums as short-term capital gains, taxed at ordinary income rates. Selling certain in-the-money calls or short-dated calls can also suspend the long-term holding period on your shares, potentially converting a future long-term gain into a short-term one. Review IRS Publication 550 and consult a tax professional before implementing a covered-call income strategy in a taxable account.

Should I sell covered calls right before earnings to capture higher premiums?

Selling before earnings does produce higher premiums because implied volatility is elevated, but it also exposes you to large overnight moves that can far exceed the premium collected. If the stock gaps down sharply after earnings, your premium income will not cover the loss. Most income-focused covered-call traders either close positions before earnings or specifically avoid initiating new calls when an earnings date falls inside the expiration window.