Protective Put Calculator

Protective puts are a popular options strategy used by investors to manage downside risk while maintaining the potential for upside. This calculator helps you determine the optimal protective put strategy for your investment portfolio.

What is a Protective Put?

A protective put is an options strategy that combines a long position in an asset with a short put option. This strategy provides downside protection while allowing the underlying asset to appreciate in value.

The key components of a protective put strategy are:

The underlying asset (stock, ETF, etc.)
A put option that provides downside protection
An entry price for the underlying asset
A strike price for the put option

Protective puts are particularly useful during market volatility or when you expect the market to decline but want to maintain some upside potential.

How to Use This Calculator

To use the protective put calculator:

Enter the current price of the underlying asset
Select the strike price for the put option
Enter the premium paid for the put option
Click "Calculate" to see your results

The calculator will show you the maximum loss, break-even price, and potential profit from the strategy.

Formula Used

Maximum Loss: Premium Paid

Break-even Price: Strike Price - Premium Paid

Potential Profit: (Current Price - Strike Price) + Premium Paid

These formulas help you understand the risk and reward of your protective put strategy.

Worked Example

Let's say you have a protective put strategy with the following details:

Current stock price: $50
Put strike price: $45
Premium paid: $2.50

Using the calculator:

Maximum loss: $2.50 (the premium paid)
Break-even price: $42.50 ($45 - $2.50)
Potential profit if stock reaches $55: $5.00 (($55 - $45) + $2.50)

FAQ

What is the difference between a protective put and a covered call?: A protective put provides downside protection while allowing for upside, while a covered call provides upside protection while allowing for downside.
When should I use a protective put strategy?: Protective puts are ideal when you expect the market to decline but want to maintain some upside potential, or during periods of market volatility.
What are the risks of a protective put strategy?: The main risk is that the underlying asset may not recover to the break-even price, resulting in a loss equal to the premium paid.
How do I determine the right strike price for a protective put?: The strike price should be below the current price of the underlying asset, typically 10-20% below, depending on your risk tolerance.
Can I use a protective put on any type of asset?: Protective puts can be used on stocks, ETFs, and other assets that have options available for trading.

About this calculator

Written by Calculator Editorial TeamPractical calculator research and UX writing

Reviewed by Practical Tools ReviewFormula logic, assumptions, and usability checks

Updated June 25, 2026. Formulas, assumptions, and limitations are shown directly on this page.

Formula and Assumptions

The calculator uses standard options pricing formulas with these assumptions:

No dividends or interest payments during the option's life
No transaction costs or commissions
European-style options (exercise only at expiration)