The Consistency Rule Explained: How to Calculate It Before Your Payout
A detailed guide to prop firm consistency rules: how the percentage is calculated, the different variants, and how to avoid a rejected payout.
What is a consistency rule?
A consistency rule stops most of your profit from coming from a single trade or a single day. The stated goal is to prove a repeatable process rather than one lucky hit. The common form: your best day must not exceed a set share (20%–50%) of total profit.
How it is calculated
Formula: (best day profit ÷ total net profit) × 100. Example: $5,000 total profit with a $2,200 best day equals 44%. Under a 40% rule you are non-compliant and must grow total profit — in this case to at least $5,500 — to bring the ratio down.
Variants
- Daily consistency: best day capped as a share of total profit — the most common.
- Single-trade consistency: largest winning trade capped at a percentage.
- Lot-size consistency: prevents sudden size spikes versus your average.
- Minimum trading days: typically 3–10 active days before a payout request.
When it applies
Some firms apply it only during the evaluation, others only on the funded account at payout time, and some at both stages. The riskiest is payout-only, because you discover it after you have already made the money. Read the rule before you buy, not after you profit.
How to stay compliant
- Fix your risk per trade (0.5%–1%) instead of sizing up after losses.
- After an outsized day, spread the remaining profit across more days.
- Run the calculation before requesting a payout, not after.
- Do not close the week with one huge trade to reach target — this is the top cause of a rejected first payout.
Is it a fair rule?
The rule itself is legitimate and widespread; problems come from vague wording or retroactive enforcement. We log every change to a firm’s published rule text in our rule-change tracker so you can see whether terms shifted after your purchase.