Lot Size & Contract Limits
Max lots per trade and max contracts held — exceed it and the account is hard-breached.
Futures: 50K Topstep = 5 minis / 50 micros. Exceeding by 1 micro = breach. FX: Max lot per position and 80% margin cap. Apex eval 50K up to 10, Earn2Trade max 3 — progression ladder.
Applies to 2 firms • Trading Rules
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Why this rule exists
Futures: 50K Topstep = 5 minis / 50 micros. Exceeding by 1 micro = breach. FX: Max lot per position and 80% margin cap. Apex eval 50K up to 10, Earn2Trade max 3 — progression ladder.
How traders get caught
This rule is often buried in FAQ or enforced only at payout review — not on the pricing page. Check the exact firm wording before assuming the headline covers your case.
How to stay safe
Verify the firm terms excerpt, keep evidence logs of your setup, and test edge cases in the simulator before sizing up.
The Formula
How it is calculated
Real Dollar Example
Topstep 50K: You open 6 ES minis (max 5) for 10 seconds → immediate hard breach, even if closed in profit.
Common Traps & Mistakes
Adding to a winner and crossing contract cap intraday.
Assuming micro = 1/10 mini always — firm counts micros separately.
Firms using this rule
All 41 guides
Try it live
Simulate this rule interactively with your starting capital and drawdown constraints using our real mathematical risk engine.
Open Interactive SimulatorDeterministic — exact firm formulas