Margin call explained: broker collateral demand definition
By Ken Chigbo, Founder, KenMacro. Published 2026-05-13.
Quick answer
A margin call is a broker notification that account equity has fallen below the required margin level on open positions. The trader must either deposit additional funds, close positions to free up margin, or accept that the broker will begin liquidating trades automatically once equity reaches the stop-out threshold.
What is margin call?
A margin call is the formal demand from a broker for additional collateral when a trader’s account equity drops below the maintenance margin required to keep leveraged positions open. In retail forex and CFD trading, brokers express this as a margin level percentage, calculated as equity divided by used margin, multiplied by one hundred. When that ratio falls beneath a defined threshold, commonly somewhere between 50% and 100% depending on the broker and jurisdiction, the platform issues a warning. If equity continues to decline towards the stop-out level, the broker liquidates positions, starting with the largest losing trade.
How traders use margin call
Retail traders treat the margin call threshold as a hard risk boundary rather than a working level. The desk observes that disciplined operators size positions so margin used sits well below 20% of equity, leaving substantial buffer for adverse moves before any warning triggers. Institutional desks rarely see margin calls because position sizing is governed by value-at-risk frameworks, not leverage limits. For retail, the practical use is monitoring the margin level field on the platform during volatile sessions, particularly around scheduled releases like non-farm payrolls or central bank decisions. Traders who hold positions through illiquid weekend gaps, especially in instruments like XAU/USD or exotic FX pairs, are most exposed to a margin call arriving on Sunday’s open with no opportunity to react.
Common misconceptions about margin calls
Many retail traders believe a margin call is a phone call from the broker. In modern electronic trading, it is an automated platform notification, sometimes a pop-up or email, never a personal contact. A second misconception is that a margin call means immediate liquidation. The margin call level and the stop-out level are usually separate thresholds, giving the trader a window to act. A third is that depositing one dollar above the requirement solves the problem. It does not, because continued adverse price action will trigger the same condition within minutes if the underlying position size remains unchanged.
Open a Vantage raw-spread account
Frequently asked
What is the difference between a margin call and a stop-out?
A margin call is the warning stage, issued when account equity falls to a defined percentage of used margin, often 100%. The stop-out is the liquidation stage, triggered when equity falls further, often to 50% or 20% depending on the broker. The margin call gives the trader a chance to deposit funds or reduce exposure. The stop-out removes that choice and the broker closes positions automatically, starting with the worst performing trade.
Can a margin call result in a negative account balance?
Yes, in fast-moving markets or over weekend gaps, liquidation can occur at prices significantly worse than the stop-out level, leaving the account in deficit. Brokers regulated under jurisdictions like the FCA or ASIC provide negative balance protection for retail clients, meaning the broker absorbs the shortfall. Professional clients and traders with brokers in lighter-touch jurisdictions may remain liable for the negative balance and receive a demand for payment.
How do I avoid a margin call?
Position sizing is the primary defence. Keeping used margin below 20% of equity creates buffer for adverse moves. Setting stop losses on every position prevents losses from accumulating uncontrolled. Avoiding excessive leverage, particularly on instruments prone to gapping like gold, indices, and cryptocurrency, reduces exposure. Monitoring the margin level field during scheduled high-impact releases and reducing exposure ahead of weekends are practical habits that institutional risk teams enforce systematically.
Does a margin call affect my credit score?
No, margin calls in retail forex and CFD accounts are not reported to credit agencies. The relationship is contractual between the trader and the broker, governed by the client agreement. If liquidation produces a negative balance and the broker does not offer negative balance protection, the broker may pursue the debt through standard recovery channels, which could eventually affect credit standing if unresolved. For most regulated retail accounts, the matter ends at the stop-out.
Related from the desk
Educational analysis only. Past performance does not guarantee future results. Manage risk against your own portfolio.
From the desk, free
Get the macro framework the desk actually trades
The same regime-first framework behind every call on this site. Free. No spam, unsubscribe anytime.
Trading this with real money?
The desk routes traders to the broker that fits their style, not to whoever pays most. Find your route in under a minute.
Continue reading
From the desk
Where this gets traded
Reading the macro driver is half of it. The other half is an account that holds execution when the driver actually moves the tape. See the KenMacro desk guide to the best brokers for macro traders.
Read the desk guide →