Consistency rules in prop firms: what they mean for scalpers

[FXS London Scalper]

Some prop firms have consistency rules: one day's profit may not exceed a fixed fraction of total profit, for example 30% or 40%. Scalpers with uneven results can be caught by this.

How it works in a typical version: if the profit target is 10,000 and one day made 5,000, that day is 50% of profit, above a 40% limit. The trader must keep trading until other days bring the share below the limit.

Why firms use it: to filter out lucky single trades or gambling on news.

What it means for strategy:

• Big news days that produce outsize profits can delay a payout.
• Steady daily results fit the rule better than occasional large wins.
• Position size should be consistent; doubling up on a good day makes it worse.

A simple check during the challenge: compute the largest day's share of total profit every evening.

Read the exact wording. Some firms apply it only to the funded stage, some to the challenge, some to payouts.

Has a consistency rule affected you?