Margin Call Price Calculator
Find the stock price that triggers a margin call.
Enter your values
Enter the purchase price per share in $.
Enter the percent bought on margin in %.
Enter the maintenance margin requirement in %.
Results update instantly as you type — no submit needed. Your values are remembered on this device, and the shareable link reopens the calculator with exactly these numbers.
- Margin call price
- $66.67
- Price drop that triggers call
- 33.33%
- Initial equity percentage
- 50%
- Loan amount per share
- $50.00
Quick answer
A margin call is triggered when the stock price falls enough that your equity percentage drops to the maintenance margin requirement, typically 25-30%.
Call price = purchase price x (1 - initial margin) / (1 - maintenance margin)
At a glance
| What it does | Find the stock price that triggers a margin call. |
|---|---|
| Category | Investing |
| Inputs needed | Purchase price per share, Percent bought on margin, Maintenance margin requirement |
| Main output | Margin call price |
| Formula | Call price = purchase price x (1 - initial margin) / (1 - maintenance margin) |
| Cost | Free — no sign-up, no download |
How to use the Margin Call Price Calculator
- 1Enter the price you bought the stock at and the percentage financed with margin.
- 2Enter your broker's maintenance margin requirement (often 25-30%).
- 3Any price at or below the margin call price will trigger a call for more funds or forced liquidation.
Inputs explained
- Purchase price per share($)
- Enter the purchase price per share in $.
- Percent bought on margin(%)
- Enter the percent bought on margin in %.
- Maintenance margin requirement(%)
- Enter the maintenance margin requirement in %.
Worked example
Using the values the calculator loads with:
Inputs
- Purchase price per share100 $
- Percent bought on margin50 %
- Maintenance margin requirement25 %
Results
- Margin call price$66.67
- Price drop that triggers call33.33%
- Initial equity percentage50%
- Loan amount per share$50.00
Frequently asked questions
What happens during a margin call?
You must deposit cash or securities, or the broker can sell your positions without notice to bring the account back to the requirement.
Can maintenance requirements be higher than 25%?
Yes — brokers can and often do set house requirements above the regulatory minimum, especially for volatile stocks.
What do I need to enter into the Margin Call Price Calculator?
Just 3 values: purchase price per share, percent bought on margin, maintenance margin requirement. Every field starts with a realistic example, so you can change one number at a time and watch the result update instantly.
How does the Margin Call Price Calculator work out the answer?
A margin call is triggered when the stock price falls enough that your equity percentage drops to the maintenance margin requirement, typically 25-30%. It applies the formula Call price = purchase price x (1 - initial margin) / (1 - maintenance margin) and shows the working so you can check each step by hand.
Is the Margin Call Price Calculator free, and do I need an account?
It is completely free with no sign-up, no download and no usage limit. Everything is calculated in your browser, so the numbers you type never leave your device.
Results are estimates for general information. For medical, legal, structural or financial decisions, confirm with a qualified professional.