Margin Call Calculator

When equity falls below the maintenance margin requirement. You must deposit funds or sell securities to restore.

Margin Call Price = Loan / (Shares x (1 - Maintenance%)). E.g. $10k loan, 200 shares, 25% = $66.67.

25-30% for most brokers. FINRA minimum 25%. Volatile stocks may require 40%+.

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The Margin Call Calculator uses industry-standard formulas and algorithms to ensure accurate results. However, for critical financial or medical decisions, always consult a qualified professional.

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Initial margin is the equity you must put up to open a leveraged position. Under Regulation T, that is typically 50% of the purchase price, so brokers can lend you up to half the cost of the stock. Maintenance margin is the lower threshold your equity must stay above after the trade is open, usually 25% to 30% of the position's current market value. The gap between the two is your cushion: a position can lose value and drop from 50% equity toward the maintenance floor before anything happens. A margin call fires only when equity slips below the maintenance level, not the initial one. This calculator works with the maintenance margin because that is the number that triggers the call, letting you enter your loan, shares, and maintenance percentage to see exactly which price crosses the line.

It depends on your leverage and the maintenance margin requirement, not on a fixed percentage. The more you borrow relative to your equity, the smaller the drop needed to trigger a call. For a position trading at $100 with a margin call price of $66.67, the stock has roughly 33% of downside cushion before the call lands. A lightly leveraged account might absorb a 40% decline, while a heavily margined one could be called after a 10% dip. The cushion also shrinks as the maintenance requirement rises, since a higher floor sits closer to today's price. This tool reports the exact price change to a margin call as a percentage, so instead of guessing, you can enter your equity, loan, and share count and read precisely how much room your position has before a call.

Margin excess is the amount your current equity sits above the broker's maintenance requirement, expressed in dollars. It represents the buffer you have before a call, and a healthy positive figure means the position can fall further without trouble. A margin deficit is the opposite: your equity has already dropped below the maintenance requirement, so the number is negative and you are effectively already in a margin call. At that point the broker can demand additional cash or liquidate securities to restore the account above the threshold. The size of the deficit shows roughly how much you would need to deposit to cure it. This calculator computes excess or deficit directly from your equity, loan, and maintenance percentage, so you can instantly tell whether a position is comfortably above the line or already over it.

Brokers raise maintenance requirements on volatile or thinly traded stocks to protect themselves against fast, large price swings. FINRA sets a regulatory floor of 25% for long equity positions, and most brokers apply 25% to 30% to ordinary stocks. But house rules can climb to 40%, 50%, or even 100% for low-priced shares, leveraged ETFs, recent IPOs, or names with little trading volume, because those positions can gap down before the broker can sell collateral. A higher maintenance requirement means a call fires at a higher price, so the position has far less room to fall before you are forced to act. House requirements can also rise without notice during turbulent markets. The calculator's reference table recomputes the call price at 20%, 25%, 30%, 35%, and 40% at once, so you can see how much a stricter requirement tightens your cushion.

You have a few levers, and the goal is the same for each: lift your equity back above the maintenance requirement before price gets there. Depositing additional cash directly raises equity and pushes the call price lower. Selling part of the position reduces both the loan and the leverage, which also lowers the price at which a call would fire. Borrowing less in the first place leaves a wider cushion, and avoiding the most volatile names keeps the maintenance requirement modest. Watching the price change to a margin call gives early warning before the stock reaches the danger zone. Run your numbers through this calculator to see your current margin percentage, labelled Healthy, Moderate, or At Risk, plus the exact call price, so you can decide whether to add funds, trim the position, or simply keep a closer eye on it.