The correct annualized return for the wheel strategy must account for all premium collected, all stock gains and losses, the total time capital was deployed, and the average capital at risk. Most online calculators only count premium, which dramatically overstates actual performance.

The Wrong Way to Calculate Returns

The common mistake:

"I collected $3,000 in premium this year on a $30,000 account. My return is $3,000 / $30,000 = 10%."

This is wrong because it ignores:

  • Unrealized losses on assigned stock you're still holding
  • Stock gains from shares called away above cost basis
  • The fact that capital wasn't always fully deployed
  • Assignment periods where capital was locked in losing positions

    • The Correct Formula

    Annualized Return = (Total Realized P&L + Change in Unrealized P&L) / Time-Weighted Average Capital × (365 / Days)

    Let's break down each component:

    Total Realized P&L

    Sum of all closed trades:

  • Net premium collected (sell premium minus any buyback costs)
  • Stock gains or losses from shares called away
  • Any positions closed at a loss

    • Example:

  • Premium from expired puts: $1,800
  • Premium from expired calls: $600
  • Premium from closed (bought back) positions: $400 - $150 cost = $250
  • Shares called away: Bought at $48 (after premium), sold at $52 = $400 gain
  • Total realized P&L: $3,050

    • Change in Unrealized P&L

    If you're holding assigned shares at year-end, include their mark-to-market gain or loss.

    Example:

  • Holding 100 shares of AMD, cost basis $125, current price $118
  • Unrealized loss: ($118 - $125) × 100 = -$700
  • Unrealized P&L: -$700

    • Time-Weighted Average Capital

    This is the trickiest part. Your capital deployed changes constantly as positions open and close.

    Simplified method: Calculate the average of your month-end deployed capital:

    | Month | Capital Deployed | Jan$15,000 Feb$15,000 Mar$20,000 (assigned, holding shares) Apr$20,000 May$12,000 (shares called away, new put) | Jun | $18,000 |

    Average: $16,667

    Putting It Together

    Annualized Return = ($3,050 - $700) / $16,667 × (365 / 180)

    = $2,350 / $16,667 × 2.028

    = 14.1% × 2.028 = 28.6% annualized

    Now compare that to the naive calculation of $3,050 / $30,000 = 10.2%. The correct method accounts for the time value of money and gives you a true comparison against other investments.

    Return on Capital vs Return on Account

    There's an important distinction:

    Return on Deployed Capital: How much you earned on the money actually at risk. This is higher because your cash reserve isn't included in the denominator.

    Return on Total Account: How much your overall account grew. This is lower because idle cash earns near-zero.

    Example:

  • Account: $50,000
  • Average deployed: $30,000
  • Net P&L: $5,400

    • Return on deployed capital: $5,400 / $30,000 = 18% Return on total account: $5,400 / $50,000 = 10.8%

    Report both. The deployed capital return tells you how effective your strategy is. The account return tells you how your wealth is actually growing.

    Tracking Monthly Returns

    For ongoing monitoring, calculate monthly returns:

    Monthly Return = (Premium Collected + Realized Stock Gains + Change in Unrealized) / Average Capital Deployed That Month

    Keep a running table:

    | Month | Premium | Stock Gains | Unrealized Δ | Capital | Monthly Return | Jan$420$0$0$15,0002.8% Feb$380$0-$200$15,0001.2% Mar$290$0-$500$20,000-1.1% | Apr | $350 | $800 | +$400 | $20,000 | 7.8% |

    March was a negative month because the unrealized loss on assigned shares exceeded premium collected. April bounced back as shares were called away at a profit. This is the reality of wheel trading — lumpy returns that smooth out over quarters.

    Comparing Your Returns to Benchmarks

    Always compare your wheel returns against:

  • S&P 500 total return — Did you beat the index?
  • Risk-free rate — Treasury bills currently yield 4-5%. You need to beat this for the risk to make sense.
  • Same stock buy-and-hold — Would simply owning the stock have done better?

    • If your wheel returns consistently trail the S&P 500 over 12+ months, you might be better off in index funds. The wheel only makes sense if it delivers above-market returns to compensate for the time and effort involved.

    OptionsPilot computes your true annualized return automatically, factoring in assignment periods, unrealized positions, and time-weighted capital — so you always know exactly how you're performing.