Prop Firm Consistency Rule Calculator

Divide your best single day's profit by your total profit in the window, then multiply by 100. If a $3,000 best day sits inside $8,000 total profit, that is 37.5%. If your firm's cap is 40%, you comply; if it is 30%, you do not and the payout is deferred until more trading dilutes the ratio.

The formula is best day ÷ cap. A $3,000 best day under a 50% rule needs $6,000 total; under a 40% rule it needs $7,500; under 30% it needs $10,000. This calculator shows the exact figure and how much additional profit you still need to book.

At most firms, no. The payout is deferred, not the account closed — you keep trading normal size until your best day falls below the cap. The real danger is forcing trades to close the gap and breaching a daily drawdown instead. A minority of firms treat repeat violations more harshly, so read your specific terms.

Topstep's Consistency Score is the strictest mainstream implementation because it applies during the evaluation, not just at payout. Apex loosened its rule from 30% to 50% in March 2026. FTMO and FundedNext's standard Stellar challenges have no best-day consistency cap at all.