Prop firm drawdown calculator
Your challenge rules
Enter the limits from your own account agreement — rules differ per firm, and some measure drawdown on a trailing basis or include open floating losses.
Your hard numbers
Sizing for the rule, not the setup
On a funded account, position size has a second constraint on top of your own risk plan: the account must still be alive tomorrow. If three stop-outs put you at the daily limit, your real plan is a maximum of two trades before you stop for the day — that decision is much easier to make in advance than at 14:55 after two losses.
In Simple Trading Journal you can keep one journal per prop firm account, each with its own balance and default risk %, and switch between them in the top bar. Every trade carries a rule-broken flag, so the analytics can show what your P&L looks like on the days you followed the plan versus the days you did not.
Frequently asked questions
- How does a prop firm daily loss limit work?
- A daily loss limit is a percentage of account size (commonly 4–5%) that your equity may not fall by within one trading day, usually measured from the day's starting balance and often including open floating losses. Breaching it typically fails the account immediately.
- What is the difference between static and trailing max drawdown?
- A static max drawdown is fixed to the initial balance. A trailing drawdown follows your highest equity or closed balance upward, so profits raise the floor. Trailing rules are stricter: giving back a large winner can breach the account even when you are up overall.
- How many losing trades can I take in a row?
- Divide your remaining drawdown room by your risk per trade. Risking 1% against a 5% daily limit gives five full stop-outs — fewer once spread, commissions and slippage are counted. Exact rules vary by firm, so always confirm against your own account agreement.
- Why do most funded accounts fail on risk, not strategy?
- Because breaches come from size and revenge trades after a loss, not from bad entries. A journal that tags every trade with your emotional state and whether a rule was broken shows that pattern within weeks instead of after the account is gone.
Stop guessing. Start journaling.
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