What are TopStep lot size and position limits?
Source review:
Source: Official TopStep rules (verified )TopStep does not enforce strict lot size limits beyond what your drawdown and daily loss rules allow. Your maximum safe position size is determined by your risk per trade relative to your daily loss limit and stop loss distance.
Practical position limits by account size:
- -$50,000: $1,000 daily loss limit = $10 safe risk per trade (1% of limit)
- -$100,000: $2,000 daily loss limit = $20 safe risk per trade (1% of limit)
- -$150,000: $3,000 daily loss limit = $30 safe risk per trade (1% of limit)
With a 20-pip stop on EUR/USD ($10/pip per standard lot), the safe lot sizes are:
- -$50,000: 0.05 lots per trade
- -$100,000: 0.10 lots per trade
- -$150,000: 0.15 lots per trade
With trailing eod (floor moves up at end of day), reduce position size after profitable periods because your floor has risen closer to your current balance.
Use the Vigil position size calculator to find the exact safe lot size for any instrument, stop distance, and account size on TopStep.
Rule Evidence
- -Evaluation type: 1-step
- -Platforms: NinjaTrader, Tradovate, TradingView
- -Markets: futures
- -Last reviewed on Vigil: 2026-03-21
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