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Trading glossary

Consistency Rule
no single day may carry the account.

A consistency rule caps how much of your total profit may come from a single day (some firms measure a single trade). It exists so that one lucky day cannot pass a challenge or justify a payout. Caps in current firm rules run from 15% of profit (Blue Guardian's Instant Starter and Alpha Capital's Alpha Direct) to 50% (FTMO's 1-Step and Apex), while Topstep's Combine sets its line at 55% of the profit target instead. Firms also differ on whether the rule applies to the evaluation, the funded stage or both, and on whether it counts balance or equity. Some firms have no consistency rule at all.

The formula

best-day share = best day's profit ÷ total profit pass if best-day share ≤ cap total profit needed = best day ÷ cap

Losing days reduce total profit, so a red day makes the ratio worse even though the best day did not change.

A worked example

A 40% cap. Your first four days:

day 1 +2,400 day 2 +600 day 3 −300 day 4 +900 total +3,600 best-day share = 2,400 ÷ 3,600 = 66.7% → fails

To pass, total profit must reach 2,400 ÷ 0.40 = $6,000. You need another $2,400, and no new day can exceed $2,400 or it becomes the new best day and raises the target again. In practice that means smaller, steadier days at the size you normally trade, not a second big swing to "finish it".

Common mistakes

How the RB journal tracks it

The journal's Consistency Rule Check shows your best day as a share of total profit against the limit you set for the account (tuned in Edit Account), with a bar that turns from safe to warning as you approach it.

Consistency rule check in the RB Trading journal prop tracker, showing the best day as a share of total profit for a challenge account
The consistency rule check: best day as a share of total profit, and what it takes to unlock the payout (demo account).

See your own Consistency Rule from real trades

Log trades by hand, import a file, or live-sync MT4, MT5 and cTrader through the RBSync EA. The numbers on this page then come from your own history instead of examples.

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Related terms and tools

Daily Loss Limit Trailing Drawdown Max Drawdown Position Sizing Prop challenge cost calculator Prop Firm Drawdown Calculator
By RB Trading · Last updated 8 October 2026 · Back to the full glossary