How To Calculate Moneyness Of An Option In Excel

Calculate the moneyness of call/put options in Excel format with this interactive tool. Understand whether your option is in-the-money (ITM), at-the-money (ATM), or out-of-the-money (OTM).

How to Calculate Moneyness of an Option in Excel: Complete Guide

Understanding option moneyness is crucial for traders to assess risk, potential profit, and strategy selection. This guide explains the mathematical foundations and practical Excel implementations.

1. Understanding Moneyness Fundamentals

Moneyness describes the relationship between an option’s strike price and the current market price of the underlying asset. There are three primary states:

• In-the-Money (ITM): Option has intrinsic value (call: strike < stock price; put: strike > stock price)
• At-the-Money (ATM): Strike price equals stock price (intrinsic value = 0)
• Out-of-the-Money (OTM): No intrinsic value (call: strike > stock price; put: strike < stock price)

2. Mathematical Formulas for Moneyness

The core calculations differ for calls and puts:

For Call Options:

• Intrinsic Value: MAX(0, Stock Price – Strike Price)
• Moneyness Ratio: Stock Price / Strike Price
• Excel Implementation:

  =IF(B2>A2, "ITM", IF(B2=A2, "ATM", "OTM"))

  Where B2 = Stock Price, A2 = Strike Price

For Put Options:

• Intrinsic Value: MAX(0, Strike Price – Stock Price)
• Moneyness Ratio: Strike Price / Stock Price
• Excel Implementation:

  =IF(A2>B2, "ITM", IF(A2=B2, "ATM", "OTM"))

3. Step-by-Step Excel Implementation

1. Data Setup: Create columns for Stock Price (B), Strike Price (C), Option Type (D), Days to Expiration (E), Risk-Free Rate (F)
2. Intrinsic Value Calculation:

   =IF(D2="Call", MAX(0,B2-C2), MAX(0,C2-B2))

3. Moneyness Status:

   =IF(AND(D2="Call",B2>C2),"ITM",IF(AND(D2="Call",B2=C2),"ATM",IF(AND(D2="Call",B2B2),"ITM",IF(AND(D2="Put",C2=B2),"ATM","OTM"))))))

4. Moneyness Ratio:

   =IF(D2="Call",B2/C2,C2/B2)

5. Time Value Component:

   =IF(D2="Call",B2-C2-M2,B2-C2+M2)

   Where M2 = Intrinsic Value from step 2

4. Advanced Moneyness Metrics

Metric	Formula	Excel Implementation	Interpretation
Percentage ITM/OTM	(Stock – Strike)/Strike * 100	=IF(D2=”Call”,(B2-C2)/C2*100,(C2-B2)/B2*100)	Shows how deep ITM/OTM the option is as %
Delta Approximation	N(d1) from Black-Scholes	=NORM.S.DIST((LN(B2/C2)+(F2+(B2^2)/2)*E2/365)/(B2*SQRT(E2/365)),TRUE)	Estimates option delta (0-1)
Extrinsic Value	Option Price – Intrinsic Value	=G2-M2 (where G2=option premium)	Time value component

5. Practical Applications in Trading

• Strategy Selection: ITM options have higher delta (move more like stock), OTM options are cheaper but have higher gamma
• Risk Management: ATM options have highest gamma (sensitivity to price changes)
• Earnings Plays: OTM options benefit most from volatility expansion post-earnings
• Hedging: ITM puts provide better downside protection with higher intrinsic value

6. Common Mistakes to Avoid

1. Ignoring Dividends: For stocks paying dividends, adjust strike price downward by present value of dividends
2. Volatility Mispricing: High IV can make OTM options appear cheaper than they are
3. Early Exercise: Only ITM American options should be considered for early exercise
4. Liquidity Issues: Deep ITM/OTM options often have wide bid-ask spreads
5. Time Decay: ATM options lose time value fastest as expiration approaches

7. Excel Template Implementation

Create a comprehensive template with these sheets:

1. Input Sheet: Stock price, strike prices, expiration dates, volatility estimates
2. Calculations Sheet: All moneyness metrics, Greeks approximations
3. Dashboard: Conditional formatting to highlight ITM/ATM/OTM, sparklines for price trends
4. Backtest Sheet: Historical moneyness analysis with price data

8. Comparing Moneyness Across Asset Classes

Asset Class	Typical ATM Definition	Average Intrinsic Value %	Volatility Impact
Stock Options	Strike = Stock Price	0-2% of underlying	High (30-100% IV)
Index Options	Strike = Index Level	0-1% of underlying	Medium (20-50% IV)
Currency Options	Strike = Spot Rate	0-0.5% of underlying	Low (10-30% IV)
Commodity Options	Strike = Futures Price	1-5% of underlying	Very High (50-200% IV)

Academic References:

CBOE Options Education (Options Clearing Corporation) SEC Options Glossary (U.S. Securities and Exchange Commission) Option Moneyness Guide (Corporate Finance Institute)