By William Harris ยท Reviewed for current rules on
Prop Firm Risk Rules Explained โ Daily DD, Overall DD, Profit Target
Daily loss limit โ the rule that kills most accounts
The daily-loss limit caps the maximum loss across a single trading day. Standard limit at FTMO, FundedNext, TFT Standard: 5% of the day's starting equity. Day boundaries are defined by the broker's trading-day cutoff, typically 5pm New York time (22:00 UTC during NY DST).
Critical measurement detail: the limit is calculated from the equity at the start of the day, not the initial deposit. After a profitable day that grew the account to $105,000 from $100,000, the next day's daily-loss limit is 5% of $105,000 = $5,250, not $5,000. After a losing day that shrunk the account to $97,000, the limit becomes $4,850. The limit floats with daily starting equity.
How accounts breach it: a single bad trade or a sequence of correlated trades produces a peak-to-trough equity decline exceeding 5% from the day's open. The breach happens at the exact moment equity touches the threshold โ the broker's risk engine then closes positions automatically. There is no grace period. There is no 'pending' state. The account is immediately disqualified.
How to stay under it: size positions so that worst-case correlated daily loss is well under 5%. The standard rule: per-trade risk 0.5%, max 4-6 simultaneous positions, EAs with backtested max-daily-DD below 3%. Self-impose a 3% daily loss cap (close all positions if equity drops 3% from open) as additional buffer against execution friction.
Overall loss limit โ static vs trailing
The overall loss limit caps the total drawdown across the evaluation period. Standard limit: 10% of initial deposit. Two measurement variants exist:
Static (the FTMO model, also TFT default): the 10% is measured from the initial deposit and doesn't change as the account grows. A $100,000 account has $90,000 as the hard floor regardless of how much profit the trader accumulates. Easier to manage โ once you're profitable, you have substantial buffer above the floor.
Trailing (some FundedNext models, certain challenge tiers): the 10% trails the highest-water-mark equity. If the account peaks at $110,000, the floor moves to $99,000 (90% of $110,000). The trader's profitable runs raise the floor, making subsequent drawdowns potentially fatal even from a 'profitable' position. Trailing is materially harder to manage than static.
Always verify which model applies to your specific challenge before depositing. The same firm may offer different products with different rules; the rules document specifies static vs trailing for each. Trailing models reward consistent slow growth; static models reward eventual large profits with bounded downside.
Profit target โ the timing constraint
The profit target sets the threshold for passing each evaluation phase. Standard values: 8% phase 1 + 5% phase 2 in FTMO-style two-phase challenges; 10% in single-phase Standard challenges; varies (5-10%) by firm and model. The funded stage usually has no profit target โ pass the evaluation and you're funded indefinitely as long as you stay under loss limits.
How profit target is measured: cumulative net profit (closed P&L + open positions mark-to-market) above the initial deposit, expressed as a percentage. $108,000 equity from $100,000 deposit = 8% profit. Both closed and open profits count โ there's no 'must be closed' requirement.
Timing: most firms have removed evaluation duration deadlines (2023-2024 industry trend), so there's no time pressure to hit the target. Take as long as needed. The exception: minimum trading days rule โ typically 4-5 days with at least one trade each โ must still be satisfied, so you can't pass via a single lucky day.
The right pace: most successful EA-driven challenges hit the 8% target across 15-25 trading days. Pace below 0.3% per day is too slow (suggests EA underperformance); pace above 1% per day is too fast (suggests over-risking, likely to encounter the daily-loss limit before passing). Steady 0.5% daily is the sweet spot.
Minimum trading days โ the often-missed rule
Most firms require at least 4-5 trading days with at least one closed trade per day before the account can be passed. This rule exists to prevent passing via a single lucky session and to validate that the trader isn't using exploit strategies (e.g. extreme leverage on a single trade).
The measurement: calendar days with at least one trade closed before the day's cutoff (5pm NY). Holding a position open across multiple days counts as one trading day (the day it closes). Opening and immediately closing a 0.01 lot trade counts as a trading day. There is no minimum profit requirement per day.
Failure mode: low-frequency EAs (daily-timeframe swings) sometimes produce no signals for 1-3 weeks during quiet markets. If the EA hits the profit target via 2-3 large winning trades but doesn't accumulate 4-5 trading days, the challenge isn't passed yet โ keep trading conservatively until the day count satisfies. Manual 0.01 lot fillers to satisfy day-count are explicitly allowed by most firms.
FTMO requires 4 days; FundedNext requires 5; TFT requires 5; smaller firms vary 3-7. Check the firm's current rules document before deciding the EA archetype โ ultra-low-frequency strategies are better suited to firms with 3-4 day minimums.
Other rules โ news, weekends, EA permissions
News trading: most firms permit it but warn about spread-widening risk on the trader. Some specific models (FundedNext Express, certain TFT Rapid tiers) prohibit trading during scheduled high-impact news events; positions must close before the release. Always check the specific model's rule document.
Weekend holding: post-2023 industry standard is to allow weekend holds. Some firms (notably Eightcap Prop, a few smaller TFT-affiliated programs) still prohibit, requiring all positions closed before Friday close. The mitigation is the same regardless: weekend gap risk is real, so close positions yourself 60+ minutes before Friday close whether or not the rule requires it.
EA permissions: explicitly allowed at FTMO, FundedNext, TFT, and most major firms in 2026. A handful of smaller firms still prohibit EAs entirely; avoid those if you're trading algorithmically. Specific strategy restrictions (no martingale, no hedging, no scalping under 30 seconds) appear in some products โ read the rules carefully before paying the challenge fee.
Anti-manipulation rules: most firms prohibit explicit market manipulation strategies (latency arbitrage, news-tick arbitrage, certain copy-trading patterns). Standard retail EAs don't engage in these; only specialised institutional-style HFT strategies do. The rule is rarely binding for retail traders but worth verifying for niche EA categories.
Common reasons EAs fail the challenge
- Confusing daily-loss limit calculation. The 5% is from day's starting equity, not initial deposit. A growing account has a growing daily-loss floor.
- Not realizing the overall drawdown is trailing on some products. Profitable runs raise the floor; subsequent normal drawdowns become fatal.
- Underestimating minimum trading days. Hitting profit target in 2 days doesn't pass FTMO's 4-day minimum.
- Disabling news filter to chase profit. The single bad NFP usually ends the account.
- Holding weekend positions on firms that prohibit it. Even allowed weekend holds carry gap risk โ close before Friday close as default discipline.
- Misunderstanding scaled accounts. The funded stage has the same daily/overall limits; passing the evaluation doesn't relax constraints.
Frequently asked questions
How do I know if my prop firm has trailing or static drawdown?
The distinction matters more on profitable accounts. Static: $100k deposit, peaks at $130k, falls back to $110k. Drawdown from $130k is 15.4% which would seem fatal, but static measures from initial deposit ($100k) so account stands at +10% โ still passing. Trailing: same scenario, trailing measure says drawdown from $130k peak is 15.4%, exceeds 10% trailing limit, account disqualified. Same numbers, opposite outcome.
What time exactly is 'end of trading day' for daily-loss calculations?
Specific edge: a position closed at 4:59 NY time counts as today's P&L. The same position closed at 5:01 NY counts as tomorrow's P&L. For EAs running on broker-local time, this matters โ Eastern European brokers (CET) see midnight at 6pm NY, six hours after the prop firm cutoff. Configure EA time filters in UTC or broker time and verify the alignment matches the prop firm's interpretation.
Do daily-loss rules apply per-EA or per-account?
This is why running 5 EAs each at 1% per trade is much riskier than 1 EA at 1% per trade โ the correlation matters. Practical guideline: when running N EAs simultaneously, scale per-EA risk to total_portfolio_risk / sqrt(N ร 1.5) to account for cross-EA correlation. For 5 EAs targeting 1% total daily risk: per-EA risk โ 0.37%. Higher correlation requires lower per-EA risk.
Is a news filter actually required, or just recommended?
The rules don't mandate news filters because traders can theoretically manage news manually. In practice, no retail trader can react fast enough to news spread spikes to protect an unfiltered EA position. The filter is operational discipline, not regulatory requirement. Some Express/Rapid challenge models explicitly require news filters with position-closure before scheduled releases; check your specific model's terms.
Do the same rules apply on the funded account or does it loosen?
The conservative configuration that earned the funded account is what sustains it. Specifically: 0.5% per-trade risk, strict news filter, no weekend exposure unless validated, low-frequency strategy. Traders who immediately scale to 1.5-2% per-trade risk after funding see accounts close in 6-9 months. Traders who maintain conservative discipline see accounts last 18+ months on average.
Can I breach the overall limit without first breaching the daily limit?
The interaction matters for strategy choice. EAs with high-frequency small losses might avoid daily limits but accumulate steady overall drawdown. EAs with low-frequency large losses might survive overall but trigger daily limits. The right EA archetype produces neither pattern โ bounded daily P&L AND bounded overall drawdown. Backtest both metrics before deploying.