Negative Balance Protection Explained: Can You Lose More Than You Deposit?

Yes, without negative balance protection you can lose more than you deposited. It does not happen often, but when it does it tends to happen to many traders at once: during a weekend gap, a flash crash or a currency peg breaking.

What is negative balance protection?

Negative balance protection (NBP) means your broker cannot ask you to pay more than the money in your account. If a fast move takes your balance below zero before your positions can be closed, the broker resets it to zero and absorbs the loss.

How an account goes negative

Brokers close positions automatically at a stop-out level, usually when your equity falls to a set percentage of the margin used. In normal markets that happens before your balance reaches zero.

In a gap, there is no price between where the market closed and where it reopens. If gold closes on Friday at 4,000 and reopens on Monday at 3,940, your stop-out executes at 3,940 or worse. A highly leveraged long position can lose more than the account holds in that single jump.

Who requires it

Professional clients in the UK and EU usually give up negative balance protection when they opt up to professional status.

Regulatory NBP vs a broker's promise

A broker's offshore entity may say it offers negative balance protection. That is a commercial promise, not a regulatory duty. In an extreme event, the difference matters: a regulator can enforce the first; you can only ask for the second. Our rating gives more points for NBP required by law than for NBP promised by policy.

How to check whether you have it

1. Search your client agreement for "negative balance".
2. Check whether the clause applies to retail clients of your entity, and whether there are exceptions (some exclude "abusive" trading or hedged positions across accounts).
3. Confirm the entity in the agreement; see which company holds your account.

How to protect yourself even with NBP

• Size so that a gap cannot take you near stop-out. The position size calculator shows the loss at your stop; ask what happens if the price gaps twice as far.
• Reduce leverage into weekends and major events.
• Do not rely on stops in a gap. A stop is an instruction to close at the next available price, not a guarantee of that price, unless your broker offers guaranteed stops.

Questions traders ask

Does negative balance protection cover all my accounts? It typically applies per client, and some brokers net accounts against each other. Read the clause.

Has this ever happened at scale? Yes. When the Swiss National Bank removed the franc's floor against the euro in January 2015, many traders' accounts went deeply negative and some brokers failed.

Do I need NBP if I always use stops? Stops do not protect against gaps. NBP does.