Margin Call Calculator
Enter your position details to find the exact price that triggers a margin call on a stock margin account, or the liquidation price for a leveraged trading position. The calculator shows the equity deficit if you are already below the maintenance threshold, and a step-by-step breakdown of every formula used.
What is a margin call?
A margin call occurs when the equity in a margin account falls below the broker's required maintenance margin. When you buy securities on margin, you borrow funds from your broker and pledge the securities as collateral. If the market value of those securities drops enough, your equity stake shrinks below the maintenance threshold and your broker demands that you either deposit additional cash, sell securities, or a combination of both to bring the account back into compliance. If you do not respond promptly, the broker has the right to liquidate positions in your account without prior notice.
The margin call price formula
For a standard stock margin account, the price at which a margin call is triggered is calculated as: Margin Call Price = Purchase Price x (1 - Initial Margin) / (1 - Maintenance Margin) For example, if you buy $10,000 worth of stock with a 50% initial margin and a 25% maintenance margin, the margin call triggers when the position falls to $10,000 x (1 - 0.50) / (1 - 0.25) = $10,000 x 0.667 = $6,667. At that point your outstanding margin loan of $5,000 equals 75% of the $6,667 value, leaving you with exactly 25% equity, right at the maintenance threshold. For leveraged or futures positions, the liquidation price is: Long: Entry x (1 - 1/leverage + maintenance margin rate). Short: Entry x (1 + 1/leverage - maintenance margin rate).
How to avoid a margin call
The most reliable way to avoid a margin call is to keep your equity well above the maintenance margin requirement by maintaining a safety buffer. Practical strategies include: keeping account equity 10-15% above the maintenance threshold, setting a stop-loss order above the margin call price, avoiding concentrating margin in a single volatile security, and monitoring the position daily. Some brokers offer margin call alerts by email or SMS when equity approaches the threshold. Reducing leverage by paying down part of the margin loan also widens the gap between the current price and the margin call price.
Margin calls in leveraged and crypto trading
In cryptocurrency and futures markets, the concept is the same but the terminology often differs. Instead of a "margin call," exchanges typically refer to a "liquidation price" - the price at which your position is automatically closed. The key variable is the maintenance margin rate set by the exchange, which ranges from about 0.4% on major crypto exchanges to 3% or more on some derivatives platforms. With 10x leverage, a price move of roughly 10% in the wrong direction exhausts your initial margin; the maintenance margin rate shifts the actual liquidation price slightly from that level. Isolated margin mode limits your loss to the margin posted for that specific position, while cross margin mode draws on your entire account balance and may protect individual positions longer but risks the whole account.
Typical margin requirements by account type
| Account type | Initial margin | Maintenance margin | Risk level |
|---|---|---|---|
| Standard stock account (Reg T) | 50% | 25% | Moderate |
| Pattern day trader account | 25% | 25% | Moderate |
| Broker enhanced requirement | 50-75% | 30-40% | Lower risk |
| Futures E-mini S&P 500 | Exchange set | Exchange set | Varies |
| Crypto 10x leverage | 10% | 0.5-2.5% | Very high |
| Crypto 25x leverage | 4% | 0.5-2.5% | Extreme |
FINRA Regulation T sets the federal minimums; brokers may impose higher "house" requirements.
Frequently asked questions
What happens if I ignore a margin call?
If you do not meet a margin call within the required timeframe (usually two to five business days, though some brokers act within hours or even immediately), your broker can liquidate enough of your holdings to bring the account back into compliance. The broker chooses which securities to sell and does not need your approval. You may also incur transaction fees, interest charges, and your margin privileges could be restricted or revoked.
Does the margin call price change over time?
The margin call price calculated here assumes the margin loan amount stays fixed. In practice, interest accrues on the loan each day, which increases the loan balance and therefore raises the margin call price slightly over time. For longer-held positions this effect can be meaningful. Always use your broker's current account statement to see the exact margin call threshold.
What is the difference between initial margin and maintenance margin?
Initial margin is the percentage of a trade's value you must pay with your own cash when opening the position. In the United States, Federal Reserve Regulation T requires at least 50% for most stocks. Maintenance margin is the lower ongoing minimum equity percentage required to keep the position open after it is already in place. The standard maintenance level is 25%, but most brokers set a higher "house requirement" of 30-40%.
How much money do I need to deposit to meet a margin call?
The deposit required equals the shortfall in equity below the maintenance margin level. If your current equity is $2,000 but the required equity at maintenance is $2,500, you need to deposit at least $500. However, many brokers require you to restore equity to the initial margin level, not just back to maintenance, so the actual deposit may be larger. This calculator shows the minimum deficit needed to restore the maintenance margin.
Is isolated margin safer than cross margin?
Isolated margin limits your maximum loss on a single position to the margin you allocated to it. Your other funds are not at risk if that position is liquidated. Cross margin uses all available funds in the account as collateral, which lowers the chance of liquidation for any single position but means a large adverse move can consume your entire balance. For beginners, isolated margin is generally considered safer because the downside is capped.