Prop firm rules decide whether a trading account passes, remains active or fails. Making a profit is only one part of the test. A trader can finish a day above the starting balance and still breach a limit because open losses, commissions or an intraday equity drop crossed the firm’s threshold.
The names also create confusion. “Maximum loss,” “trailing threshold,” “daily drawdown” and “end-of-day drawdown” can refer to different calculations. Always use the formula in the programme’s current rules, but the explanations below will help you understand what to look for.
Prop firm rules at a glance
| Rule | What it controls | Main question to ask |
|---|---|---|
| Profit target | Profit required to pass a stage | Is it based on balance or closed profit? |
| Daily loss limit | Maximum loss permitted in one trading day | Do open losses, fees and prior-day profit count? |
| Maximum drawdown | Lowest permitted balance or equity | Is it static, trailing or calculated at day-end? |
| Consistency | Limits dependence on one large winning day | What percentage formula is used? |
| Minimum days | Required number of qualifying trading days | What activity makes a day count? |
| Position limit | Maximum lots or contracts | Are correlated positions combined? |
| Restricted trading | News, overnight, weekend or strategy limits | Does it differ between stages? |
What is a profit target?
The profit target is the amount needed to complete an evaluation stage. If a $50,000 account has a 6% target, the trader generally needs to reach $53,000 in qualifying balance. Reaching the target does not excuse a prior rule breach, and an open trade showing the required profit may not count until it is closed.
A higher target relative to the available drawdown demands more efficiency. A $3,000 target with only $2,000 of maximum loss requires a target-to-drawdown ratio of 1.5. Compare that ratio across programmes instead of comparing the account size alone.
What is the maximum daily loss?
The daily loss limit is the maximum permitted decline during the firm’s defined trading day. The calculation may include closed results, floating profit or loss, commissions and swaps. It can reset at midnight in a specified time zone rather than at midnight where the trader lives.
Suppose the daily limit is $1,000. A trader closes one position for a $300 loss and then holds another with a $750 floating loss. If both amounts count, the day’s loss is $1,050 and the account may breach even though the second trade has not been closed.
Profits can complicate the calculation. Some firms measure from the previous day’s balance or equity, while others use the starting balance for that day. Read the formula and test it against examples supplied by the provider.
What is maximum drawdown?
Maximum drawdown defines the account’s overall failure threshold. On a $100,000 account with a static $5,000 maximum loss, the account must generally stay above $95,000. This limit can apply to balance, equity or both.
The notional account size therefore overstates the trader’s actual risk budget. If only $5,000 can be lost, position sizing should be based on that $5,000 allowance and the strategy’s expected losing streak—not on the $100,000 headline.
Static drawdown explained
A static drawdown remains at a fixed level. If the threshold begins at $95,000, profitable trading does not normally move it upward. After the account grows to $105,000, there is a $10,000 gap to the same threshold, subject to daily limits and payout effects.
Static drawdown is easier to plan around, but traders must check whether a withdrawal raises the practical risk of failure by reducing the account balance closer to the fixed floor.
Trailing drawdown explained
A trailing drawdown moves up as the account reaches new highs. Assume a $50,000 account has a $2,000 trailing threshold. At the start, the floor is $48,000. If equity rises to a high of $51,000, the floor may trail upward to $49,000. If equity later falls, the floor normally does not move back down.
The most important detail is whether the threshold trails intraday equity or only closed/end-of-day balance. Intraday trailing can move higher during a temporarily profitable open trade, reducing room if that trade reverses. End-of-day trailing generally updates once using a defined day-end value.
End-of-day drawdown explained
With an end-of-day model, the threshold is usually recalculated after the trading session using the closing balance or another specified value, then enforced during the next session. Apex’s EOD evaluation documentation, for example, says its EOD drawdown is calculated at market close and enforced in the following session, while a separate fixed daily-loss limit operates during the day.
This can be easier to monitor than intraday trailing, but it is not the same as having no intraday risk limit. A daily-loss rule can still fail the account before the closing calculation.
What is a consistency rule?
A consistency rule is intended to discourage passing or qualifying for a payout through one exceptionally large day. A common formula is:
Best profitable day ÷ total eligible profit × 100
Imagine total profit of $4,000 and a best day of $2,000. The consistency percentage is 50%. If the programme requires the best day to be no more than 40%, the trader has not necessarily lost the account; more profit may be needed so that the best day becomes a smaller share of the total.
However, firms calculate consistency differently. Some apply it only to payouts, some to evaluation, and some define eligible profit or trading days in a special way.
Minimum and maximum trading days
A minimum trading-days rule requires activity on a set number of separate days. The firm may require a minimum profit, duration or number of trades for a day to count. Opening a token position for a few seconds may not qualify.
Some evaluations expire after a fixed number of calendar days or billing periods. Others have no time limit but continue charging a subscription. A no-time-limit challenge can still become expensive if fees recur.
Position-size and scaling rules
Firms may cap the number of lots or futures contracts held at once. Micros and standard contracts may be converted using a ratio. Multiple positions in correlated instruments can sometimes be treated as one combined exposure.
A scaling plan may initially allow fewer contracts and increase the limit only after the account reaches a profit milestone. Exceeding a position limit can be a hard breach even when the trade is profitable.
News, overnight and weekend rules
Some programmes prohibit opening or closing trades shortly before and after selected economic releases. Others permit news trading during evaluation but restrict it in the performance stage. Overnight and weekend holding can also depend on the account type.
For example, FTMO’s current FAQ distinguishes between its Standard and Swing accounts for certain news and holding restrictions. This illustrates why a general review cannot replace the exact rules attached to the purchased account.
Prohibited strategies and account access
Terms may restrict latency arbitrage, exploiting price-feed errors, certain high-frequency activity, account sharing, coordinated trading and copying trades from unrelated users. Policies for expert advisers, trade copiers, VPNs, VPS services and multiple IP addresses vary.
Using a commercially sold bot or signal does not guarantee compliance. Two customers running identical trades can trigger a review even if neither intended to violate a rule.
How to build a personal safety buffer
Do not trade directly against the official limit. If daily loss is $1,000, a personal stop of $500 or $600 leaves room for slippage, commissions and calculation differences. Set a maximum risk per trade and a maximum number of losing trades per day.
A simple rule sheet should show:
- Official daily and overall thresholds
- Your smaller personal daily stop
- Risk per trade in currency, not only percentage
- Daily reset time converted to your local time
- Maximum permitted size and your smaller operating size
- Dates and conditions for payout eligibility
Frequently asked questions
Does an open loss count toward drawdown?
It often does when the rule uses equity, but not every calculation is identical. Assume floating losses count until the programme documentation clearly says otherwise.
Can profit from yesterday increase today’s loss limit?
Sometimes, but the answer depends on whether the firm calculates from the prior balance, prior equity or a fixed starting amount. Use the published formula.
What is the easiest type of drawdown?
Static drawdown is generally easier to understand. Whether it is easier to pass still depends on the size of the allowance, profit target, daily limit and trader’s strategy.
Can rules change after buying a challenge?
Firms may update programmes and terms. Save the version accepted at purchase and monitor official notices to understand whether changes apply to existing accounts.
Read our introduction to prop firms and step-by-step prop firm challenge guide for the full process around these rules.
This guide is educational, not investment or legal advice. Check the current contract and rule page for the exact programme you use.
