Max Daily Loss Rule Explained: What It Is and How to Track It
The max daily loss rule is the maximum amount a trader is allowed to lose in a single trading day before the account is locked or the evaluation is failed. It is the most important rule in prop firm trading, and breaching it is the most common reason evaluations fail.
Understanding exactly how it works — how it’s calculated, when it resets, and how to track it live — is not optional for anyone trading a funded or evaluation account.
Why prop firms use it
Prop firms risk their own capital when they fund traders. The daily loss limit exists to cap the maximum damage any single trader can do on any single day. Without it, one trader having a catastrophically bad session could lose the firm more than the profit target they were working toward — often in under an hour.
From a risk management perspective, a daily loss limit converts an unlimited downside event into a bounded one. The firm can model its total exposure across thousands of traders precisely because each individual trader’s daily downside is capped.
How the limit is typically set
Most prop firms set the daily loss limit as a percentage of the account size. Common structures:
- 2% of account — a $50,000 account has a $1,000 daily limit
- $500–$2,500 flat — a fixed dollar amount regardless of account size, common on smaller accounts
- 5% of account — more generous firms or larger accounts
Some specific examples (always verify against current firm rules):
| Account Size | Typical Daily Limit | Recommended Personal Stop |
|---|---|---|
| $25,000 | $500–$1,000 | $600 |
| $50,000 | $1,000–$2,500 | $1,500 |
| $100,000 | $2,000–$5,000 | $3,000 |
| $150,000 | $3,000–$7,500 | $4,500 |
Static vs. trailing daily loss limits
There are two types of daily loss limit you’ll encounter:
Static daily loss: A fixed dollar amount that resets each day. If you start Monday with $50,000 and have a $2,500 daily limit, Monday’s limit is $2,500 regardless of what happened Friday. Most evaluation accounts use static daily limits.
Trailing daily loss (also called “trailing drawdown” with a daily component): Some firms track the daily limit relative to your highest account balance, not the starting balance. If you start at $50,000 and run up to $53,000 intraday before giving it back, the daily floor might be calculated from the $53,000 peak. This is more restrictive and requires more careful monitoring.
How to track it properly
Your broker’s platform shows your real-time P&L, but it may not format it the way your firm calculates the limit. Common gaps:
- Brokers show gross P&L; your limit may be calculated net of commissions
- Some firms count open floating P&L against the limit; brokers show this separately
- Trailing drawdown calculations require tracking your peak balance, which not all brokers display
The most reliable approach is a dedicated journal with prop firm guardrail rules configured to your specific firm’s numbers. Set your daily loss limit in the journal at the start of an evaluation. The journal tracks it live, warns you when you approach it, and can lock the session automatically when you hit your personal stop — removing the decision from a moment when your judgment is most compromised.
FAQ
What happens if I breach the daily loss limit on a prop firm evaluation?
On most prop firms (FTMO, Apex, MyFundedFutures, Topstep) a daily loss limit breach fails the evaluation immediately and permanently. You cannot continue — you must purchase a new evaluation. A few firms allow a one-time breach grace, but you should never plan for it. Treat the limit as a hard floor.
Should I set my personal daily stop at the firm's exact limit?
No. Set it at 60–70% of the firm's limit. If your firm allows a $2,500 daily loss, your personal stop should be around $1,500. The buffer exists because a fast-moving market can slip past your target exit, and because the psychological pressure of being close to the limit produces worse decisions. Give yourself room.
Is the daily loss limit calculated on open positions or closed trades?
This varies by firm. Most calculate it on realised P&L (closed trades only). Some include unrealised P&L from open positions. Read your specific firm's rules carefully — if a firm includes unrealised P&L, a large floating loss on an open position can breach your limit even if you haven't closed the trade.
How do I track the daily loss limit in real time?
Your broker dashboard shows your realised P&L but may not format it the way your firm calculates the limit. A dedicated trading journal with prop firm guardrail rules will track the limit live, warn you as you approach it, and can lock the session automatically when you hit your personal stop.