What Happens When You Violate a Prop Firm Rule Mid-Trade?

In short. When a prop firm loss limit is hit while a trade is still open, the breach usually counts at that moment, not when the trade closes. Most firms measure the limit on equity, which includes floating losses, so a position that later recovers does not undo it. The platform then closes open positions at market. What happens next depends on the rule: a soft limit locks the account for the day, a hard limit fails it.

The breach happens on equity, not on the closed trade

Many traders think of a loss limit as something checked after a trade is closed. On most prop firm accounts it works the other way. The limit is a floor for equity, and equity moves with every tick of an open position.

FTMO's published rules show this clearly. Both its Maximum Daily Loss and Maximum Loss rules set a limit below which account equity cannot drop, where equity is the balance plus the profit or loss of open positions, plus or minus swaps, minus commissions. If equity drops below that limit, the rule is considered violated (FTMO Trading Objectives). There is no wait for the trade to close.

Topstep describes the same logic for its Maximum Loss Limit: it is monitored in real time, both realized and unrealized P&L count, and if Net P&L touches the limit at any point during the day, the account is liquidated immediately (Topstep Help Center, "What is the Maximum Loss Limit?").

Two details in these definitions are easy to miss:

• Costs count too: in FTMO's equity formula, swaps and commissions are part of the number, so a trade can breach slightly earlier than the price chart alone suggests.
• All open positions count together: two positions that are each well inside the plan can breach the limit together if they move against the account at the same time.

How the daily and maximum limits themselves are calculated (static, trailing, balance-based or equity-based) is covered in how to track drawdown across prop firm rules. This article is about what happens at the moment one of them is touched.

Soft and hard breaches: what the platform does next

Once the limit is touched, the platform acts on its own. The difference between firms, and between rules at the same firm, is what happens to the account afterwards.

The sources for each row:

• Topstep calls its Daily Loss Limit an objective rather than a rule. If Net P&L hits it, open positions are flattened, pending orders are canceled, and new orders are rejected until the next trading day starts at 5:00 PM CT. The account stays eligible for funding (Topstep Help Center, Daily Loss Limit). The same article notes that new or reset TopstepX accounts have been created without this limit since August 2024, while other platforms still use it, so the rule depends on the platform as well as the firm.
• On FTMO's CFD accounts, breaching the Maximum Loss or Maximum Daily Loss means the platform automatically closes all open positions and the account is considered failed (FTMO FAQ, "What are the Trading Objectives?").
• On FTMO Futures, the firm separates soft and hard loss limits: a soft violation closes positions and locks the account for the day, a hard one closes positions and fails the account (FTMO Futures FAQ).

The labels vary, and some firms do not use the words "soft" and "hard" at all. The question to answer before trading is simpler: for each loss rule on this account, does touching it end the day or end the account?

A worked example: one floating loss, three outcomes

The numbers below are illustrative, using FTMO's published 2-Step figures as a template: a $100,000 account and a daily loss amount of 5% of initial capital, measured from the balance at midnight CE(S)T. If the midnight balance is $100,000, equity cannot drop below $95,000 that day.

By midday, the trader has closed two losing trades for −$3,200. Balance is $96,800, so the distance to the daily limit is $1,800. A new position is opened.

Scenarios C and D are the same trade. Only the losses already taken that day are different. That is why the size of a trade cannot be judged on its own on a prop account: it has to be judged against the room left under the limit at the moment it is opened.

Scenario B is the one that surprises traders most. The stop was placed above the limit, and it still breached, because a stop order becomes a market order once triggered and can fill worse than its price. How stops behave in fast markets is explained in what a stop-loss order is, and how to measure the gap between expected and actual fills in what slippage is.

Why a recovered trade does not save the account

After a breach, many traders check the final numbers and find that the closed loss is smaller than the limit. It is natural to assume that the account should be fine. It is not.

Topstep addresses this case directly. When the limit is touched, positions are closed with market orders, and slippage or price movement during the exit can leave the final realized balance above the limit. In its example, the Maximum Loss Limit is $48,000, an open trade pushes the balance to $47,750, liquidation is triggered, and the exit fills at a final balance of $48,050. The breach still stands, because it happened first, on unrealized P&L (Topstep Help Center).

The reverse is also possible. In a gap or a fast market, the automatic exit can fill below the limit, so the final loss is larger than the limit amount. The limit marks where the platform starts closing the account, not a guaranteed worst case.

Important. A stop placed exactly at the limit is not a safe stop. A triggered stop is filled at the next available price, and costs such as commissions and swaps are already counted in equity. The planned stop needs to leave room for slippage and costs, and the room left depends on the losses already taken that day, not on the account size.

How to size a trade so a breach cannot happen mid-trade

The habit that prevents most mid-trade breaches is a short check before every order on a prop account:

1. Read the current limit, not yesterday's: daily limits are often recalculated at a fixed time from that day's starting balance, and trailing maximum limits move up with new highs.
2. Measure the distance: current equity minus the limit, counting every open position.
3. Subtract a buffer: an allowance for slippage and costs on the stop. The right size depends on the instrument and the time of day. A buffer of a fixed fraction of the planned risk, set in advance and reviewed against real fills from the journal, is easier to follow than a guess per trade.
4. Set the maximum risk for the trade: what is left after the buffer, and never more than the normal risk per trade. If what is left is smaller than a normal trade, the safer choice is a smaller trade or no trade.

Applied to the example above: with $1,800 of distance and a $400 buffer, the most the next trade can risk is $1,400. Scenario B, at $1,500, did not fit, even before the slippage arrived.

A personal daily stop set inside the firm's limit makes this check easier, because it ends the day before the firm's rule comes into play. How to set one and which triggers to use is covered in what a daily loss limit is. The wider shift in thinking, where risk on a funded account is measured against the remaining room rather than the account size, is the subject of funded vs personal account risk.

What to do right after a breach

Once a breach has been triggered, there is nothing left to manage inside the trade. The useful work happens outside it:

• Check the official status: the firm's dashboard or notification shows whether the breach was treated as soft or hard. Do not assume from the closed P&L alone.
• Do not try to trade it back: on a soft limit the account is locked anyway. On a hard limit, opening a new account the same day to win the money back is a classic setup for a second loss.
• Read the reset or retry terms: what is possible after a failed account (a paid reset, a new evaluation, a reactivation offer) is different at each firm and changes over time.
• Log the breach as its own event: the time, the lowest equity, the limit at that moment, the fill price of the forced exit, and the slippage.

Journal fields that catch a breach before it happens

Most mid-trade breaches are visible in advance in the numbers that were already on the screen. A journal for a prop account is more useful when each trade records:

• Distance to the daily and maximum limits at entry: in dollars and in R.
• Closed P&L for the day at entry: the factor that turned scenario D into scenario C.
• Planned stop and actual fill: so the slippage buffer is based on real data.
• Other open positions at entry: to see when several small risks added up to one large one.
• Breach flag and type: soft or hard, with the rule that was touched.

Over a few weeks, these fields show whether breaches come from one habit, such as trading late in a losing day, or from stops placed too close to the limit.

This article is for educational purposes only and is not financial or investment advice. Prop firm rules differ between firms, account types, and platforms, and they change over time, so check the current rules for the specific account before trading. Trading, especially with leverage, can lead to the loss of your entire deposit or evaluation fee.

Track every funded and evaluation account separately in BitStat Accounts, and follow daily P&L and drawdown against the limits on the BitStat dashboard.