Margin call

What a margin call means

A margin call is a warning, or in some cases an automatic action, triggered when the equity in a leveraged account falls too low to support the open positions. It tells the client that the safety buffer is nearly gone and that action is needed, usually depositing more money or reducing exposure. The name comes from the older practice of brokers phoning clients to ask for more margin.

In today's online trading, a margin call is often an automated message, a platform alert or a change in the margin level colour. Some brokers send an email or notification when the margin level reaches a set threshold, such as 100 percent. Others define a margin call as the point at which new positions are blocked. A margin call is different from a stop-out, which is the later step where the broker closes positions to protect itself and the client. The exact wording and sequence differ between brokers, so the account terms matter.

Margin calls apply to forex and CFD accounts, futures accounts, and margin loans on securities. Anyone using leverage can face one.

How it works

The trigger is based on the relationship between equity and used margin. Equity is the account balance plus the floating profit or loss. Used margin is the collateral locked by open positions. As losses grow, equity falls toward used margin. The broker watches the ratio, called margin level, which is equity divided by used margin, shown as a percentage.

A typical sequence looks like this:

1. You open positions, and margin level starts high.
2. Prices move against you, and equity falls, so margin level drops.
3. When margin level reaches the margin call threshold, the broker warns you, restricts new trades or both.
4. If losses continue and margin level hits the stop-out threshold, the broker begins closing positions, often starting with the largest loser.
5. Closing continues until the margin level recovers to a safe level or no positions remain.

Thresholds are set by the broker and sometimes by regulation. For retail accounts in some jurisdictions, regulators require positions to be closed at a stated level of margin to protect clients. Brokers may also issue a margin call when margin requirements rise, for example before a weekend, which can create a call without any price move.

A worked example

The numbers are illustrative only. A trader has 2,000 USD of equity and holds positions that need 800 USD of used margin. The broker's margin call level is 100 percent and the stop-out level is 50 percent.

1. Starting margin level: 2,000 / 800 x 100 = 250 percent. There is a comfortable buffer.
2. The market moves against the trader, creating a floating loss of 1,200 USD. Equity is now 2,000 minus 1,200 = 800 USD.
3. Margin level: 800 / 800 x 100 = 100 percent. The margin call level is reached, and the platform sends a warning and blocks new positions.
4. The loss grows by a further 400 USD. Equity is 400 USD. Margin level: 400 / 800 x 100 = 50 percent. This is the stop-out level.
5. The broker starts closing positions. After closing the largest loser, used margin drops, perhaps to 300 USD, with equity locked at a reduced loss. The account survives but with much less capital.

At step 3 the trader could have deposited 800 USD, which would have raised equity to 1,600 USD and margin level to 200 percent. Or the trader could have closed part of the exposure to lower used margin. Depositing more money into a losing position carries its own risk because it can increase total losses.

Why it matters

A margin call is the clearest sign that risk has outgrown the account. It shows the real cost of high effective leverage: a modest adverse move can erase a large share of equity. Calls often come at bad moments, during volatile markets when prices are moving quickly, and deposits may take time to arrive.

How a broker defines and handles margin calls affects outcomes. Some give time to respond; others close positions immediately. Retail clients under strict regimes typically have automatic closure rules and protections that limit losses to the account balance, while other jurisdictions may allow negative balances.

How to use it in practice

• Find the margin call and stop-out levels in the broker's terms and on the platform.
• Monitor margin level, not only profit and loss.
• Keep positions small enough that normal volatility does not bring you near the threshold.
• Set alerts for margin level and keep spare funds or payment methods ready.
• Know how fast deposits are credited.
• Reduce exposure early instead of waiting for a call.
• Be aware that margin requirements can rise before weekends and events.
• Review which positions the broker closes first.

Common mistakes and misconceptions

• Assuming a margin call always means a phone call. It is usually an automated alert.
• Believing a call gives you unlimited time. In fast markets positions can be closed within seconds.
• Adding money to a losing trade without a plan.
• Treating margin call and stop-out as the same thing.
• Ignoring that a gap can skip past levels and cause larger losses.
• Assuming stops protect you. Slippage can occur.

Risks and limitations

A margin call does not guarantee you can limit the loss. Gaps, thin liquidity and platform delays can lead to closure at worse prices. Depending on the account type and region, losses may exceed your deposit. Levels and procedures differ by broker, so rely on the actual client agreement. This entry is educational and not advice.

How Brokeli looks at it

For each broker entity we note the margin call and stop-out levels, how closure is sequenced and whether negative balance protection is stated. These come from published research snapshots and the broker's legal documents, so readers can compare how much room a given account has before forced action. We treat clear, early warnings as a transparency point, not as protection against loss.