Prop Firm Rules Explained: Every Rule That Can End a Funded Account
Daily loss, max drawdown, best day, targets, time limits and strategy rules: every prop firm rule that can end or delay a funded account, with numbers.
OctoFunded Trading DeskUpdated ยท 8 min read
Prop firm rules are the written limits that decide whether a challenge or funded account stays open and when it can receive a payout. The hard limits are the daily loss limit and the max drawdown. Around them sit profit targets, consistency rules, time limits and conduct rules.
This pillar guide maps every rule that can end or delay an account, shows them together on a $100K simulated account and links to a full article on each one.
Key takeaways
- Two rules can end an account in one session: the daily loss limit and the max drawdown.
- The method matters as much as the percentage: "8% drawdown" means different floors at different firms.
- Some rules delay instead of fail: best day caps and payout conditions usually hold a payout back.
- Challenge rules and funded account rules differ: the target disappears once you are funded, the limits stay.
- Read the rules before you buy, with numbers, and write your own floor down every day.
What are prop firm rules?
Prop firm rules are the conditions you accept when you buy a challenge or a funded account on simulated capital. They protect the firm from large losses and define what counts as a valid result.
If you are new, start with what a prop firm challenge is. Then use this page as the map: each section below explains one rule and points to the deep-dive article.
Which prop firm rules end an account, and which only delay a payout?
Hard rules end the account on breach. Soft rules usually block or delay a payout until you meet them. Firms differ, so treat this table as a general map, not a statement about any one firm.
| Rule | What it limits | Usual effect of a breach | Deep dive |
|---|---|---|---|
| Daily loss limit | Loss inside one trading day | Account ends | Daily loss limit guide |
| Max drawdown | Total loss from a floor | Account ends | Static vs trailing drawdown |
| Profit target | Gain needed to pass a phase | You stay in the phase | Risk plan for passing |
| Best day or consistency rule | Share of profit from one day | Payout delayed | Best day rule |
| Time limit or minimum days | How long or how often you trade | Varies by firm | No time limit challenges |
| Strategy and conduct rules | What and how you trade | Varies, can end the account | EA policies |
How does the daily loss limit work?
The daily loss limit caps how much you can lose within one trading day, usually as a percentage of a reference balance. Touch it, and the account normally ends, even if the week is in profit.
Firms differ on three points: which balance the limit is measured from (start of day balance, equity or the initial balance), whether open trades count, and when the trading day resets. Our daily loss limit guide works through each formula.
At OctoFunded the daily loss limit is 5% on the 2-Step, 4% on the 1-Step and 3% on Instant Funded. Check the OctoFunded program rules for how it is measured.
How do prop firm drawdown rules work?
Prop firm drawdown rules set the lowest point your account may ever reach. A static drawdown fixes the floor at the start. A trailing drawdown lifts the floor as the account makes new highs.
The details change the outcome: whether the trail follows equity or balance, whether it moves intraday or at the end of the day, and whether it stops at the starting balance. Read static vs trailing drawdown for the comparison, then trailing drawdown explained for the four trailing variants on one table.
At OctoFunded the 2-Step uses a 10% static drawdown, the 1-Step an 8% trailing drawdown and Instant Funded a 6% trailing drawdown.
What do profit targets require?
A profit target is the gain you must reach to pass a challenge phase. It applies in the evaluation, not on the funded account. Missing it does not fail the account by itself; you simply stay in the phase.
The risk comes from chasing it. Traders who size up to hit a target faster often reach the daily limit first. Our risk plan for passing a challenge shows how to size trades so a losing day cannot reach the limits.
At OctoFunded the 2-Step targets are 10% in phase 1 and 5% in phase 2, and the 1-Step has a single 10% target. Instant Funded has no evaluation phase.
What are best day and consistency rules?
A best day rule caps how much of your total profit may come from your single best day. A consistency rule is the wider family: caps on daily profit, lot size swings or trade counts.
These rules rarely end an account. More often they hold a payout back until enough other days add profit. The best day rule article shows the formula, and the consistency rule article compares the common types.
At OctoFunded the 1-Step has a 50% best day cap and Instant Funded a 20% cap. Check the rules page for how each cap is applied.
Do time limits and minimum days matter?
Time limits set a deadline to reach a target, and minimum days set how many days you must trade first. A deadline can push you to force trades in a quiet market. If you trade a slower style, look for challenges with no time limit.
OctoFunded has no time limit on any program. Read the rules page for any other trading day conditions before you start.
Which strategy and conduct rules apply?
Strategy and conduct rules list what you may not do: for example some firms restrict certain news trading, copy trading between accounts, or abuse of price feed errors. They are often the least read rules, and some can end an account.
If you use automation, check the firm's EA policies in writing. OctoFunded allows Expert Advisors.
How do the rules work together on a $100K simulated account?
The rules run at the same time, so one day can test several of them. Here is an illustrative example on a $100K simulated account under the OctoFunded 1-Step rules: 10% target, 4% daily loss limit, 8% trailing drawdown and 50% best day cap. The daily results are made up, and the trailing floor is shown with a simple end of day update for the example only.
| Day | Result | Closing balance | Daily limit used | Floor in this example |
|---|---|---|---|---|
| Start | $100,000 | $92,000 | ||
| 1 | +$2,000 | $102,000 | 0% | $94,000 |
| 2 | +$4,500 | $106,500 | 0% | $98,500 |
| 3 | negative $3,000 | $103,500 | $3,000 of $4,000 | $98,500 |
| 4 | +$1,500 | $105,000 | 0% | $98,500 |
| 5 | +$3,000 | $108,000 | 0% | $100,000 |
Daily limit. On day 3 the trader lost $3,000, which is 75% of the $4,000 allowance (4% of $100K). One more $1,000 loss that day would have ended the account.
Floor. The floor started at $92,000 and climbed to $100,000 after the day 5 high ($108,000 minus $8,000). The cushion is still $8,000, but any giveback now counts against it.
Target. Total profit is $8,000, so $2,000 more is needed to reach the $10,000 target.
Best day. The best day is $4,500. Under a 50% cap, total profit must be at least $4,500 divided by 0.50, which is $9,000. At $8,000 the share is 56%, above the cap, so more profit on other days is needed before the result meets it.
Four rules, one week, and only one losing day. That is why you track all of them, not just the target.
How do you stay inside every rule?
- Write each limit in dollars before the first trade: daily loss, floor and best day threshold.
- Size from the distance to the nearest limit, not from the account size.
- Set a personal daily stop below the firm's limit, for example half of it.
- Update your floor after every new high if the drawdown trails.
- Spread profit across days so no single day dominates.
- Ask support in writing about any rule you are unsure of, and keep the reply.
FAQ
What are the main prop firm rules?
Most firms use a daily loss limit, a max drawdown, a profit target during the challenge and a set of conduct rules. Many add a consistency or best day rule, a time limit or minimum days, and conditions you must meet before a payout.
Which prop firm rule fails the most accounts?
There is no public data across firms, but the daily loss limit and the max drawdown are the two rules that end an account in a single session. Both are hard breaches, so one bad day can close the account even if the month is positive.
Are challenge rules and funded account rules the same?
Usually the loss limits carry over, but the profit target disappears once you are funded and payout conditions take its place. Some firms change other limits between phases, so read the rules for each stage.
What happens if I break a prop firm rule?
A hard breach such as the daily loss limit or max drawdown normally ends the account. A soft rule such as a best day cap usually delays a payout until you meet it. Check how each firm treats each rule before you trade.
What are the OctoFunded rules?
The 2-Step has a 10% then 5% target, a 5% daily loss limit and a 10% static drawdown. The 1-Step has a 10% target, a 4% daily limit, an 8% trailing drawdown and a 50% best day cap. Instant Funded has a 3% daily limit, a 6% trailing drawdown and a 20% best day cap. No program has a time limit.
Read the rules before you trade them
Every OctoFunded program publishes its limits before you buy: static or trailing drawdown, daily loss limit, targets and best day caps, all on simulated capital with a one-time fee and no time limit.
