Max daily loss sizing
A daily-loss cap is a session clock. Dividing that cap by the dollar risk of one trade gives the number of same-size losses the session can absorb before the cap binds. The widget below also runs the seeded engine with that cap as a field.
Daily loss limit in the widget is the session cap. The table below is the same cap divided by per-trade dollar risk.
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On a $50,000 account, 1% risk is $500 per trade. A 4% daily-loss cap is $2,000. Same-size losses the session can absorb: $2,000 ÷ $500 = 4.
| Quantity | Formula | Value |
|---|---|---|
| Dollar risk | balance × risk% | $50,000 × 1% = $500 |
| Daily cap | balance × daily% | $50,000 × 4% = $2,000 |
| Same-size losses to the cap | daily cap ÷ dollar risk | 4 |
If losses are not the same size, the count is no longer an integer identity — the widget simulates the entered average loss instead.
Cap vs total floor
A daily cap can bind before the total drawdown floor does. That is a sequencing fact, not a ranking of which rule "matters more." The full tool applies both when a firm publishes both; this page's widget applies the personal-rule set, including the daily-loss field you enter.
The free personal-rule engine currently models a stated Max Drawdown allowance as a fixed floor measured from your starting balance, not a floor that ratchets upward with a new equity peak — methodology.
FAQ
- How is max daily loss converted into a trade count?
- Divide the dollar daily-loss cap by the dollar risk of one trade. The result is the number of identical losses that reach the cap. Unequal losses need a simulation, which is what the widget runs from the entered average loss.
- Does a daily cap replace a total drawdown floor?
- No. They are different clocks. A session can hit the daily cap while the total floor is still distant, or the reverse.
- Does this tell me how much to risk?
- No. It reports the arithmetic of a cap you enter against a size you enter. It does not instruct a size.
Run it against your own numbers
The same engine, unlimited runs, at the same free accuracy as this page's calculator — open the full personal rule editor to save a rule set, add a profit goal or daily loss stop, or import a trade history.
Open the personal rule editor — free, full accuracy →Rules and outcomes vary by firm and by trader; nothing on this page is investment or trading advice, and PropSurvival is not affiliated with, endorsed by, or sponsored by any prop trading firm. This calculator models a stated rule set — it does not predict market outcomes.