Options Credit Spread Profit & Risk Calculator
A Credit Spread is a vertical options strategy where a trader simultaneously sells a higher-priced option and buys a lower-priced option of the same expiration, collecting a net credit upon entry.
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📐 Formula
💡 Practical Example
5 contracts: Sell $100 Put @ $3.50, Buy $95 Put @ $1.20: Max Profit = $2.30 × 500 = $1,150.00. Strike Width = $5.00 | Max Loss = ($5.00 - $2.30) × 500 = $1,350.00. Breakeven Price = $100 - $2.30 = $97.70.
📖 About Options Credit Spread Profit & Risk Calculator
A Credit Spread is a vertical options strategy where a trader simultaneously sells a higher-priced option and buys a lower-priced option of the same expiration, collecting a net credit upon entry.
To use the Options Credit Spread Profit & Risk Calculator, enter your Short Strike Premium Collected, Long Strike Premium Paid, Short Strike Price and other values. The calculator instantly computes Maximum Potential Profit, Maximum Potential Loss (Risk) and more. Results update in real time as you change any input — no submit button needed.
How to Use This Calculator
Enter your Short Strike Premium Collected (e.g. 3.50 in /share), Long Strike Premium Paid (e.g. 1.20 in /share), Short Strike Price (e.g. 100.00 in ), Long Strike Price (e.g. 95.00 in ), and Number of Contracts (100 shares/contract) (e.g. 5 in contracts). Results update instantly as you type — adjust any value to compare scenarios.
The Formula
Net Credit per Share = Short Option Premium - Long Option Premium
Max Profit = Net Credit × 100 shares × Contracts
Max Loss = (Strike Width - Net Credit) × 100 shares × Contracts
Breakeven Price = Short Strike - Net Credit (Put Spread) or Short Strike + Net Credit (Call Spread)
Worked Example
5 contracts: Sell 100 Put @ 3.50, Buy 95 Put @ 1.20:
Max Profit = 2.30 × 500 = 1,150.
00.
Strike Width = 5.00 | Max Loss = (5.00 - 2.30) × 500 = 1,350.
00.
Breakeven Price = 100 - 2.30 = 97.
70.
Understanding Your Result
Evaluate your result in the context of your specific use case and relevant industry standards or reference values. A single calculated result is a starting point — test two to three scenarios to understand how sensitive the outcome is to your key input assumptions. For high-stakes decisions, verify your result against a secondary source or subject-matter expert before acting.
💡 Mathematical Rigor & Applied Context
- This calculator applies exact mathematical definitions following conventions established by NIST and international standards bodies.
- Rounding errors accumulate across multi-step calculations. For precision-critical work, maintain extra significant figures through all intermediate steps.
- Many mathematical concepts have multiple valid formulations — if a result seems unexpected, verify which convention or definition applies to your context.
- Dimensional analysis (unit tracking) is the fastest way to catch formula errors. Every term in an equation must have consistent, compatible units.
- Numerical methods used in digital calculators introduce floating-point precision limits (~15 significant digits for IEEE 754 double precision).
- For statistical and probabilistic calculations, always specify whether you are working with population parameters or sample statistics — formulas differ.
- Visualizing a problem geometrically or testing with known boundary values (zero, infinity, negative) reveals hidden errors faster than algebraic checking.
- When in doubt, validate your result against a simplified hand calculation or a published worked example from a textbook or standards document.
Results are for informational and educational purposes only. Always verify critical decisions with a qualified professional.