Consistency rule in prop firms
A consistency rule caps how much of an account's total profit may come from a single trading day, commonly 30% to 50%, to show that results are repeatable rather than one lucky trade.
Your best day's profit divided by your total profit must stay at or below the firm's cap. With a 40% cap, a $3,000 best day needs at least $7,500 of total profit. At most firms breaking it is not a breach: the pass or payout waits until the total catches up.
Example
A challenge applies a 40% consistency rule on a $100,000 account. On Tuesday you make $3,000; your total profit so far is $6,000. Your best day is now 50% of the total, which violates the cap. You keep trading until total profit reaches at least $3,000 ÷ 0.40 = $7,500, at which point Tuesday's share falls to 40% and the account is eligible again. Each new large day raises that bar the same way.
Consistency rule calculator
Slide your total profit and your best day, tap your firm's cap. It tells you whether you pass the rule and how much more profit you need if not.
Total profit
Best single day
Consistency cap
The variants firms use
| Variant | How it is measured | What breaking it does |
|---|---|---|
| Best-day share | Best day ÷ total profit ≤ cap (30–50%) | Delays the pass or payout |
| Lot-size consistency | Each trade's size within a band of your average | Delays a payout or voids those trades' profit |
| Payout-period only | Checked on funded accounts at each payout | Payout held until the share falls |
Consistency rules appear in some challenges, more often one-step and instant-funding programs, and in funded-stage reviews. They pair with minimum trading days: one rule spreads profit across days, the other requires the days to exist at all. Mechanics and edge cases: consistency rules explained.
How to trade within it
- Use the same risk per trade every day; consistency in size gives consistency in profit.
- After an unusually large day, trade normally; do not stop, because more days at normal size dilute the big one.
- Avoid all-in news trades, which create exactly the one-day spikes the rule targets.
FAQ
What is the consistency rule in a prop firm?
A rule that no single day may make more than a set share of total profit, commonly 30% to 50%.
How do you calculate the consistency rule?
Best day profit ÷ total profit. If it is above the cap, total profit must reach best day ÷ cap. Example: $3,000 ÷ 0.40 = $7,500.
Does breaking the consistency rule fail the account?
Rarely. Most firms delay the pass or payout until total profit grows; some remove the profit made against the rule.