Prop Firm Challenge Calculator

Safe risk-per-trade for your challenge's daily and overall limits.

Challenge account size ($)

Daily loss limit (%)

Overall drawdown limit (%)

Profit target (%)

Planned risk per trade (%)

Max trades per day

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Pass the challenge without blowing the limits

Prop firm challenges are lost on risk, not entries. This prop firm calculator works out the maximum risk-per-trade that keeps you safely inside both the daily loss limit and the overall drawdown so a normal losing streak does not breach the rules.

Why traders fail challenges

Over-risking early, then a routine 3–4 trade losing streak breaches the daily limit.
Ignoring the difference between the daily cap and the total cap.

Automating these limits is exactly what Apex Drawdown Zero was built for — it sizes each trade from a fixed risk percentage with a stop-loss, so you can choose a setting that keeps a losing run inside the firm's limits (account-level limits are in V12).

If you would rather keep trading manually and simply not breach, Prop Warden watches the same limits on any MT5 account and closes you out before they are hit — free for one account.

Frequently asked questions

How much should I risk per trade in a prop firm challenge?

Typically 0.5–1% per trade so that several consecutive losses stay within the daily loss limit. The calculator above derives a safe figure from your specific challenge limits.

Are Expert Advisors allowed in prop firm challenges?

Many firms allow EAs but rules vary — some ban certain strategies like martingale or HFT. Always confirm your firm's terms before running any automated system.

Want this enforced automatically on every trade?

Apex Drawdown Zero sizes positions from a fixed risk percentage with a stop-loss on every trade. Account-level daily-loss and drawdown limits are in Apex V12, not V9.

See the EA