A margin call is the warning every leveraged trader dreads: your broker tells you that your equity has fallen too far below the funds needed to hold your open positions. Ignore it, and the broker can close trades for you at the worst possible prices. Many accounts do not end with a slow decline. They end with a forced liquidation.
This guide explains how a margin call works, how to calculate your margin level, what stop-out means, and what the rules say in Europe and for US stocks. It then walks through seven dangerous mistakes that lead to forced closures, plus a plan for the day a margin call arrives.
Key Takeaways
- A margin call is a warning that equity has dropped near the level needed to support open positions.
- Margin level equals equity divided by used margin, times 100%.
- Thresholds vary by broker: Babypips uses 100% for the margin call, while XTB uses 100% for the margin call and 50% for stop-out.
- ESMA rules for European retail CFD traders cap major-pair leverage at 30:1 and require close-out at 50% of required margin.
- At 30:1, a 3.33% adverse move can wipe out your margin; at 5:1, it takes 20%.
- For US stock margin accounts, FINRA sets a 25% minimum, but firms can require more and sell without notice.
- Lower leverage and a free-margin buffer are the best protection.
What Is a Margin Call? A Plain-English Definition
A margin call happens when your account equity falls to a level that no longer comfortably supports your open leveraged positions. Margin itself is a good-faith deposit your broker holds as collateral while a trade is open. A margin call is the broker’s warning that this cushion is running thin.
According to CMC Markets’ explanation, you are asked to add funds or reduce positions when equity falls to or below the maintenance margin. If you do neither, the broker can close positions without your consent, usually starting with the largest or most unprofitable.
The key point is that a margin call is not a penalty. It is a safety system, and it protects the broker before it protects you.
The Terms You Need Before You Trade With Leverage
Five terms appear in every margin conversation, and confusing them is where trouble starts.
- Balance: the cash in your account before open profits and losses.
- Equity: balance plus or minus floating profit and loss, swaps and commissions.
- Used margin: the funds blocked to hold your open positions.
- Free margin: the equity left over to absorb losses or open new trades.
- Margin level: equity divided by used margin, shown as a percentage.
Free margin is your real buffer. When it reaches zero, you cannot open new trades, and one more adverse move can trigger a warning.
The Margin Level Formula
The calculation is simple. Margin level equals equity divided by used margin, times 100%. Both Babypips and XTB’s help center give the same formula.
If your equity is 4,000 and your used margin is 2,000, your margin level is 200%. As losses grow, equity shrinks and the percentage falls. If equity drops to 2,000, the level is 100%. If it drops to 1,000, the level is 50%.
This percentage is the single number to watch. Think of it as the fuel gauge of a leveraged account.
Margin Call vs Stop-Out: Two Different Alarms
Traders often treat the two terms as the same thing. They are not.
A margin call is the warning. XTB says a margin call below 100% does not close positions yet and signals that exposure should be reduced or the account funded. Stop-out is the action. XTB says that when margin level falls below 50%, positions are closed automatically, largest loss first.
Babypips defines the stop-out level as the point where equity is lower than a set percentage of used margin. In its main example the margin call comes at 100% and the stop-out at 20%, and it stresses that every broker sets its own levels.
So the gap between the two can be wide or narrow. Check your own broker’s terms before you trade.
A Worked Example: From Warning to Liquidation
Babypips gives a clear case. A trader has a 1,000 dollar balance and a USD/CHF position worth 1 dollar per pip, with 200 dollars of used margin.
After a loss of 800 dollars, equity is 200 dollars, equal to used margin. The margin level is 100%, so a margin call triggers. After a loss of 960 dollars, equity is 40 dollars. The level is 20%, which is the stop-out in that example. The position is closed, and the account is left with 40 dollars.
The trader never chose to exit. The broker did, at a price the market dictated. That loss of control is the real cost of a forced closure.
My Own Illustration: How Many Pips Does It Take?
Here is a second example using round, illustrative numbers. Assume a 5,000 dollar account, one standard lot of a major pair worth 10 dollars per pip, and 30:1 leverage. The position is worth about 100,000 dollars, so used margin is roughly 3,333 dollars.
A margin call at 100% arrives when equity falls to 3,333 dollars, a loss of about 1,667 dollars. At 10 dollars per pip, that is roughly 167 pips. A stop-out at 50% arrives when equity falls to about 1,667 dollars, a loss of about 3,333 dollars, or roughly 333 pips.
This ignores spreads, swaps and gaps. The point is that one oversized position can reach the alarm after a single bad day.
Leverage and the Size of the Move That Hurts You
Leverage sets how small a market move can wipe out your margin. CMC Markets notes that at 30:1 leverage, a 3.33% adverse move would eliminate the margin, while at 5:1 it would take a 20% move.
The relationship is simple. The wipe-out move equals one divided by the leverage. At 10:1 it is 10%, at 50:1 it is 2%, and at 100:1 it is 1%. For brokers that offer 500:1, it is only 0.2%.
High leverage does not make you wrong more often. It makes you wrong faster. For more on how leverage works and how to choose it, see our guide on what forex account leverage is and its impact on trading.
What European Rules Say About Margin
European retail traders operate under rules set by ESMA, the European Securities and Markets Authority. Its 2018 measures on CFDs limit leverage for opening positions: 30:1 for major currency pairs, 20:1 for non-major pairs, gold and major indices, 10:1 for other commodities, 5:1 for individual equities and 2:1 for cryptocurrencies.
The rules also require providers to close out one or more of a client’s open CFDs when margin falls to 50% of the minimum required margin, applied per account. They add negative balance protection, which caps a retail client’s overall losses.
Those measures were introduced as time-limited and later adopted locally, so confirm what applies in your jurisdiction. Traders outside Europe may face very different leverage and thresholds.
What Happens in a Stock Margin Account
Stocks work differently, but the logic is the same. FINRA explains in its guide to margin calls that your equity must not fall below 25% of the current market value of long securities in a margin account.
Firms can set higher house requirements, such as 30% or 40%, and can raise them at any time without advance written notice. A margin call can even occur when your stocks have not fallen, because the firm raised its requirement.
The most important warning is that a firm is not required to notify you if equity drops below the minimum. It may sell your holdings without a margin call and does not have to let you choose which securities to sell.
Mistake 1: Using the Maximum Leverage Available
The first dangerous mistake is treating the leverage cap as a target. Because brokers allow 30:1 or far more, many traders open positions that use most of their available margin.
At that level, a normal daily move can consume your buffer. A trader using 30:1 on most of the account has almost no room for error, since a 3.33% move against the position removes all margin.
A safer approach is to use only a fraction of what is allowed. CMC suggests using less leverage than the maximum and keeping a cash buffer above margin requirements. Pick the leverage that lets you survive a bad week, not the one that maximizes a good trade.
Mistake 2: Ignoring Free Margin and Margin Level
The second mistake is looking only at profit and loss. Traders check the floating result and ignore free margin, which is what actually keeps the account alive.
A healthy account might hold a margin level of 300% or more. A fragile one sits near 150%, where a small adverse move reaches the alarm. Opening another trade lowers the level immediately, because used margin rises while equity stays the same.
Set your own floor. Many traders refuse to let margin level fall below 200% to 300%, well above the broker’s call. That personal rule is the cheapest insurance in trading.
For a broader view of managing risk across a whole account, see our guide on mastering the art of risk management in forex trading.
Mistake 3: Holding Through News and Gaps
The third mistake is holding leveraged trades through scheduled events and weekends. CMC lists overnight gaps and major announcements among the causes of a margin call, since markets can open far from where they closed.
A stop-loss does not fully solve this. In fast or gapping markets, orders can fill at worse prices, a problem known as slippage. Guaranteed stops fix the price but cost extra.
The practical answer is to reduce size before known events such as central bank decisions, employment data and elections. A smaller position survives a gap that a large one cannot. Weekends deserve the same caution, because no one can close a trade while the market is shut.
Mistake 4: Averaging Down on a Losing Trade
The fourth mistake is adding to a loser to improve the average entry. It feels logical, but it increases used margin at the exact moment equity is falling.
Each added position pushes the margin level lower and brings the margin call closer. The trader is betting more on the same idea while the market is signaling the opposite.
A better rule is to add only to winners, never to losers. If your thesis is wrong, the account needs less exposure, not more. Treat the urge to average down as a reason to review the trade, not to double it.
Mistake 5: Stacking Correlated Positions
The fifth mistake is opening several trades that look different but move together. Long EUR/USD, long GBP/USD and short USD/CHF can all be the same bet against the dollar.
When the dollar rises, all three lose together, and used margin across them is large. The account has the risk of one oversized position spread across three tickets.
Count related trades as one idea when you size risk. If the combined margin would push your level below your personal floor, reduce size or skip the trade. Diversification only works when positions respond differently to the same event.
Mistake 6: Not Knowing Your Broker’s Levels
The sixth mistake is trading without knowing when the margin call and stop-out occur. Babypips notes that each broker sets its own levels, and CMC says forex brokers typically set the margin call threshold between 50% and 100% margin level.
The difference matters. One broker may warn you at 100% and close at 20%, another may close at 50%. Some close the largest loser first, others close in a different order.
Read the account terms before you fund an account. For help comparing providers, see our guide on top factors to consider when selecting a broker.
Mistake 7: Trading Without a Written Plan for a Margin Call
The seventh mistake is having no plan for the day a margin call arrives. Under stress, traders freeze, hope for a reversal or deposit money without a strategy.
Decide in advance what you will do. You have three real options: add funds, reduce positions, or close trades yourself. Adding money to a losing position only works if your analysis still holds. Reducing exposure usually works better, because it improves the margin level without more cash.
Write the plan down and keep it where you will see it. A rule made calmly beats a decision made while your equity is falling.
What to Do the Moment You Get a Margin Call
When a margin call arrives, act in this order.
- Check the numbers. Confirm equity, used margin and margin level.
- Stop opening trades. New positions reduce your margin level further.
- Cut the weakest positions. Close the trades with the worst risk-reward, not the best.
- Reduce size, not just stops. Smaller exposure restores your level quickly.
- Add funds only with a reason. Deposit if the thesis is sound, not to avoid taking a loss.
- Review afterward. Write down what caused the margin call and what you will change.
Forced closures can lock in losses at poor prices, so acting early almost always costs less than waiting.
A Margin Call Prevention Checklist
Margin call prevention is cheaper than recovery. Before each session, confirm:
- Your leverage is well below the broker’s maximum.
- Your margin level is above your personal floor, such as 300%.
- Free margin is enough to absorb a normal adverse move.
- Position sizes follow a fixed percent of equity, often 1% to 2%.
- Correlated trades are counted together.
- Stops are placed, and you understand their slippage risk.
- You know the date and time of upcoming news events.
- You have written down the call and stop-out levels for your account.
CMC cites 1% to 2% of equity per trade as a common guideline. Use it as a starting point, then adapt to your own tolerance and your own margin call buffer.
How a Margin Call Differs Across Brokers and Account Types
Not every account behaves the same way, so a margin call at one broker is not the same event at another. Standard accounts, mini accounts and accounts with different leverage tiers can use different thresholds and closing orders.
Three differences matter most. First, the level at which the margin call is issued, anywhere from 50% to 100% according to CMC. Second, the stop-out level, which XTB places at 50% and Babypips illustrates at 20%. Third, the way positions are closed, since some brokers close the largest loser first and others follow a different rule.
Some brokers also send an email or platform message before the stop-out, while others do not. A margin call may arrive as a pop-up that is easy to miss, so check your notification settings.
Before you fund an account, ask the broker three questions. At what margin level do you issue a margin call? At what level do you stop me out? In what order do you close trades? Write the answers next to your trading plan.
Margin Call Scenarios: Three Traders, Three Outcomes
Stories make the arithmetic memorable. Consider three illustrative traders, each with the same 5,000 dollar account and the same market view.
Trader One uses near-maximum leverage on a single large position. A routine two-day move against the trade brings equity to the margin call level, and the position is closed before the market turns.
Trader Two uses a quarter of the available leverage. The same move cuts equity, but the margin level stays far above the alarm. The trade survives, and the market eventually reverses.
Trader Three also uses low leverage but adds to the loser twice. Used margin climbs with each addition, and the account reaches a margin call anyway.
The market view was identical. Only sizing and discipline differed, which is why position size is the best margin call defense.
Why a Margin Call Is Not Only a Beginner Problem
Experienced traders also receive a margin call now and then. Volatility spikes, correlation jumps and gaps can overwhelm an account that looked safe the day before. Professionals reduce risk before those periods, not after.
The difference is that experts treat margin as a limit on risk, not a source of extra size. They keep buffers, know their numbers and avoid the temptation to scale up after a winning run.
That discipline is a habit, and habits are built with rules. The same approach protects a small retail account and a large fund.
Margin Call FAQ: Quick Answers
Can I lose more than my deposit? With some products you can, which CMC warns about. In Europe, negative balance protection caps retail losses.
Is a warning the same as being closed out? No. A margin call is a warning, while stop-out is the automatic closure.
What margin level is safe? There is no universal number, but many traders keep well above the broker’s call level, often 200% to 300%.
Does the broker choose which trades to close? Often it closes the largest or most unprofitable first, though practices differ.
Is this financial advice? No. It is educational, and all examples are illustrative.
Conclusion: Treat Margin as a Limit, Not a Target
A margin call is the market’s way of enforcing arithmetic. Leverage multiplies both gains and losses, and the account has only so much equity to absorb the second. When that cushion is gone, someone else decides your exit.
The seven mistakes share one root: using more leverage than the account can carry. Fix that, and most of the others lose their power.
Learn your broker’s levels, track your margin level every day, and keep a buffer that lets you survive the bad stretch every trader eventually meets.
The bottom line: Treat every margin call as a failure of position size, and size your trades so the warning never arrives.
Disclaimer
This article is for educational and informational purposes only and does not constitute financial, investment or trading advice. Trading leveraged products involves substantial risk, including the possible loss of more than your initial capital in some cases. Thresholds, leverage limits and rules vary by broker and jurisdiction and may change after publication. All numerical examples are illustrative. Past performance does not guarantee future results. Always do your own research and consult a licensed financial adviser before making decisions.