Daily Loss Limit: How Much to Set and How Prop Firms Do It

A daily loss limit is the most money you allow yourself to lose in one trading day before you stop. It is one of the simplest risk rules there is, and prop firms such as FTMO build it into their rules. This article covers how much to set, how prop firms measure it, and how to make sure you actually stop.

Why a daily loss limit matters

One bad trade rarely ruins an account. A bad day can. A common pattern behind blown accounts and failed challenges is one session where loss followed loss and the trader kept going.

There is research behind this pattern. Coval and Shumway studied professional traders at the Chicago Board of Trade. They found that traders who lost money in the morning were more likely to take above-average risk in the afternoon, a pattern the authors link to loss aversion (Coval and Shumway, Journal of Finance, 2005). These were full-time professionals, and losses still changed how they traded later the same day.

A daily loss limit takes that decision away from the stressed, afternoon version of you. You make it in the morning, while you are calm.

How much should your daily loss limit be?

There is no correct percentage for everyone. But there is a simple way to choose one that fits your trading.

Start from your risk per trade

Think of your daily loss limit as a number of losing trades, not just a percentage.

Daily loss limit = risk per trade × number of losses you accept in one day

A common rule of thumb is 2 or 3 losing trades per day. After a run of losses, extra risk starts to feel attractive, a pattern researchers call the break-even effect (Thaler and Johnson, 1990).

If your limit comes out above 5% of the account, look again at your risk per trade. A few bad days at that level do serious damage. Our article on risk of ruin shows with worked numbers how fast drawdowns grow when risk per trade is high.

Leave room for slippage

A stop loss does not always fill at its exact price. In fast markets, around news, or at the weekend open, a stop can fill worse than planned. So do not set your limit at the exact sum of your stops. If 3 losses at 1% equals 3%, treat the day as finished once you are down about 2.5% to 3%, or after the third loss, whichever comes first.

Decide what counts

Write down whether your limit includes:

• Closed losses only, or closed losses plus floating losses on open trades. Counting open trades is safer.
• Costs. Commission and swap are part of the loss. Count them.
• When the day starts. Use one fixed reset time, for example your broker's midnight, and stick to it.

How prop firms set daily loss limits

If you trade a prop-firm challenge, the daily loss limit is not optional. Break it once and the account is usually gone.

The exact rules differ between firms and change over time, so always read your firm's current rules. As one example, FTMO's published objectives (checked 27 October 2026) say (FTMO trading objectives):

• The maximum daily loss is 5% of the starting capital on the 2-Step challenge, and 3% on the 1-Step and Instant accounts.
• The daily limit is set from the balance at midnight CE(S)T, minus that percentage of the starting capital.
• Equity is checked, so floating losses on open trades count, including swap and commission.
• There is a separate maximum loss of 10%.

A worked prop-firm example

Take a $100,000 FTMO 2-Step account. The daily loss allowance is 5% of $100,000, which is $5,000.

At midnight CE(S)T, the balance is $101,200 after a good previous day. Today's floor is $101,200 − $5,000 = $96,200 in equity.

During the day:

1. The trader closes two losing trades, for −$3,000 in total. Balance: $98,200.
2. She opens a gold trade with a planned risk of $2,500.
3. Gold moves against her. The trade is floating at −$2,100.

Equity is now $98,200 − $2,100 = $96,100. That is below the $96,200 floor. The daily limit is breached, even though her closed losses for the day were only $3,000 and the gold trade never hit its stop.

This is an easy way to fail a challenge: counting closed losses and forgetting that the open trade counts too.

Set your own limit inside the firm's limit

The firm's limit is the edge of the cliff. Do not walk up to it. One simple approach is a personal limit of about half the firm's limit. On a 5% firm limit, that means stopping at around 2% to 2.5%. On a 3% firm limit, stop at around 1.5%.

Before each new trade, check one number: current equity minus the full risk of all open trades. If that is below your personal floor, you do not open the trade.

Our free daily loss limit calculator helps you work out these levels for your own account size and risk.

How to actually stop when you hit the limit

Setting a limit is easy. Stopping at it is the hard part. These habits help:

• Write the limit in money, not only in percent. "−$250 today" is clearer than "−2.5%" when you are under pressure.
• Decide what "stop" means. Close the platform. Do not just "watch" the next setup.
• Plan something else to do. A walk, the gym, a non-trading task. An empty hour in front of a chart is where revenge trades are born. Read more on revenge trading.
• Do not move the limit. Changing it in the middle of the day is the same as not having one.
• Review the next morning, not the same evening. You will judge the day more fairly after some sleep.

Pair the daily loss limit with a cap on the number of trades. Whichever is hit first ends the session. We cover that in how to stop overtrading forex. If you often enter late because a move is running away, our article on FOMO trading is also worth a read.

Daily loss limit checklist

Fill this in once, then check it every morning:

1. My risk per trade: % = $
2. My daily loss limit: ___ losses = % = $
3. My limit includes floating losses and costs: yes / no
4. My trading day resets at: ___ (my local time)
5. Prop account only: firm limit $, my personal floor $ in equity
6. Before each trade: equity minus open risk is above my floor
7. When I hit the limit: I close the platform and stop for the day

Summary

A daily loss limit helps keep your worst day survivable. Base it on your risk per trade, usually 2 to 3 losing trades. Leave room for slippage, count open trades, and on a prop account keep your own limit well inside the firm's. Then treat it as final.

Discipline Guard can help you respect this limit on your MT4 chart: it sizes each trade from your stop loss and risk %, caps your total open risk, and keeps a journal of every trade.