The 50% consistency rule: how Topstep blocks passes that hit the target
The Trading Combine's consistency rule is the least-understood mechanic in futures prop trading — because it's the only one that can stop you after you've done the hard part. You can hit the profit target, break no drawdown rule, and still not pass. Here's the exact mechanism, the math, and what to change.
What the rule actually says
At pass time, your best single day must account for no more than 50% of your total profit. One monster day doesn't prove a repeatable edge — that's the firm's reasoning — so the pass is withheld until more profitable days dilute the best day's share below half.
A worked example
- Target: $3,000. You're at $3,050 total profit — but $1,600 of it came on one day. Best-day share: 52.5%. No pass.
- To pass with that $1,600 day in the books, total profit must grow past
$1,600 ÷ 0.50 = $3,200. - So you keep trading. The daily loss limit and the EOD trailing drawdown remain fully active during this extension — every extra required day is another chance to breach them.
- Two modest green days later, total profit is $3,420, best-day share 46.8%. Now the pass registers.
That forced extension is exactly what our engine simulates: paths that hit the target with an oversized best day must continue trading to dilute it, and paths that never manage it inside the time window are counted as consistency failures — their own failure category, not "timeout."
Why this matters for your fee: traders whose style produces occasional outsized days (news traders, big-size scalpers) can show a high raw target-hit rate and still have a materially lower true pass probability under the consistency mechanic. The gap is invisible in any calculator that just checks "did equity reach the target."
What actually improves your odds
- Cap your green days. Stop trading once a day reaches a planned cap — commonly 1–1.5% of the account. The engine's "Daily Profit Lock" input models exactly this behavior; toggle it and watch the consistency-failure share move.
- Plan for extra days. Budget a few trading days beyond target-hit rather than treating the target as the finish line.
- Uniform beats heroic. Under a consistency rule, the trader who makes $400 eight times passes ahead of the one who makes $1,600 twice — at identical totals.
Simulate your stats against Topstep's full rule set.
EOD trailing drawdown that stops at the start balance, the daily loss limit, minimum trading days, and the 50% consistency mechanic — simultaneously, against your win rate and R profile. Pass probability, dominant failure cause, expected attempts and fee spend. Free, no signup, computed in your browser.
Run the Topstep simulation — freeOpens the engine with the Topstep rule set pre-loaded. Nothing you enter leaves your device — methodology.
PropSurvival is independent analytical software and is not affiliated with, endorsed by, or sponsored by Topstep. Rule descriptions reflect our verification dated above; firms change rules without notice — the firm's own documentation is always the final authority. Nothing here is investment advice.