The ideal risk per trade on a prop firm account is 0.5-1% of your account balance. On a 25K Apex account, this means risking $125-$250 per trade. Our risk calculator computes exact position sizes for any futures or forex instrument based on your account size, risk tolerance, and stop loss distance.
Manage your capital intelligently and respect prop firms drawdown rules
$10,000 max total loss
$5,000 max per day
500 units
1:2.0
10
5
Risk per trade ≤ 2%
Currently: 1%
RR Ratio ≥ 1:2
Currently: 1:2.0
Trades before DD ≥ 10
Currently: 10
Leverage ≤ 20x
Currently: 10x
Whether you're a beginner or experienced trader, our risk calculator helps you make informed decisions. Specifically designed for prop firms like Apex Trader Funding, Topstep and FundedNext, it instantly calculates your ideal position, risk exposure, and alerts you before rule violations.
It's simple: enter your capital, risk limits, and trade details. The tool does the rest. You immediately see if your setup is viable or needs adjustment. No more complex Excel calculations.
Don't let chance decide your success. With our calculator, every trade is optimized to maximize your gains while minimizing risks. Join the thousands of traders already using it to pass their challenges and maintain their funded accounts.
Enter your account size (the funded account balance, e.g., $50,000 for an Apex 50K), your risk per trade (typically 0.5-2% of your account), and your stop loss distance in ticks or pips.
The calculator instantly shows you the exact position size to use. For example, on a 50K Apex account risking 1% with a 10-tick stop on NQ ($5/tick), you should trade exactly 1 contract — risking $50 per trade. Going above this means you're overleveraged.
Why this matters for prop trading: Most prop firm failures come from incorrect position sizing, not bad entries. A single overleveraged trade can blow through your trailing drawdown and end your evaluation. Use this calculator before EVERY session.
Position Size tells you exactly how many contracts or lots to trade. Never round up — always round down to stay within your risk tolerance.
Risk Amount ($) shows the dollar value at risk if your stop loss is hit. This should never exceed your daily loss limit (if your firm has one). On firms like Apex with no daily loss limit, keep it under 2% of your remaining drawdown buffer.
Risk/Reward Ratio: If your R:R is below 1:1.5, consider widening your target or tightening your stop. Professional prop traders typically aim for 1:2 or higher.
Risking more than 2% per trade. On a $50K account with $2,500 trailing drawdown, a single 3% loss ($1,500) wipes 60% of your buffer. Stick to 0.5-1% during evaluations.
Not adjusting after losses. After 2 consecutive losses, cut your size in half. After 3, stop trading for the day. This prevents the revenge trading spiral.
Ignoring trailing drawdown mechanics. Your trailing drawdown follows your equity high-water mark. A $500 unrealized profit that you don't lock in still moves your drawdown threshold up.
Too many contracts too early. Start with minimum size until you're 30-40% to your profit target. Then gradually scale up. Never go full size on day one.
Forgetting commissions. NQ round-trip commissions are ~$4.18 per contract. On 10 trades/day with 2 contracts, that's $83.60 — a meaningful drag on a $50K account. Factor this into your risk calculations.
Deep dive: Read our complete Risk Management Guide for Prop Traders for advanced strategies.
Start at 0.5% risk on a new evaluation account. You can always increase later, but one early blowup can end your challenge before it starts. Most successful funded traders use 0.5-1% per trade.
Build a safety buffer first. Get to 50% of your profit target before increasing position size. This gives you room to absorb a losing streak without hitting your drawdown.
Use this calculator BEFORE every session. Pre-calculate your position sizes for the contracts you plan to trade. Write them down. This removes emotion from sizing decisions during live trading.
Different rules = different risk. Firms with no daily loss limit (Apex, Lucid) allow slightly more aggressive sizing. Firms with 5% daily limits (FTMO, Topstep) require tighter control. Adjust your parameters accordingly.
Everything you need to know to master risk management in prop trading
Enter your account size (10k to 300k$), max allowed drawdown (5-20%), and your daily loss limit (2-10%). These three parameters define your trading room according to your prop firm rules.
The tool recommends 1-2% maximum per trade. The color code guides you: green (≤2%) for conservative management, yellow (2-3%) for moderate, and red (>3%) for risky. Most pro traders stay under 2%.
The calculator automatically divides your risk amount by your stop loss distance. For example: with $1000 risk and a stop 2$ away, you get 500 units. Simple and precise.
Enter your entry price, stop loss and take profit in the dedicated fields. The tool instantly calculates the distance in points, the risk/reward ratio, and adjusts position size accordingly.
It's the ratio between your potential gain and maximum loss. A 1:2 ratio means you earn $2 for every $1 risked. The tool displays this ratio in real-time and recommends a minimum of 1:2.
Calculate your potential earnings with different prop firm profit splits.
Simulate prop firm challenges with Monte Carlo analysis.
Review of FTMO with 5% daily loss and 10% max drawdown limits.
Futures prop firm with no daily loss limits - simpler risk management.
Master all aspects of risk management for funded trading.
Strategies to manage risk effectively during evaluations.