What this daily-loss calculation measures
This calculator starts with a percentage allowance, subtracts a negative net P&L and shows what remains. For a hypothetical $100,000 baseline and 5% rule, the allowance is $5,000. Realized P&L of −$1,200 plus floating P&L of −$300 consumes $1,500, leaving $3,500 in this model. A negative result means the entered loss exceeds the allowance. It does not read a broker account, verify a firm's rulebook or determine whether an account has breached.
A positive day and a fixed equity floor are different
The loss-used term is capped at zero when net P&L is positive. With the same $100,000 baseline and 5% rule, a +$2,000 day still leaves a displayed allowance of $5,000. If a separate account rule instead measures current equity of $102,000 against a fixed floor of $95,000, its distance to that floor is $7,000. Those answers describe different models. Do not interpret this page's allowance as the exact additional loss that every account can take. Check whether your rule credits intraday profit, and how it defines the floor.
Match the inputs to the measurement window
Use the baseline and daily window specified by your current account terms. Check its reset time and time zone, whether floating P&L is included, and whether commissions and swaps are already in your P&L figures. Enter negative amounts for losses and positive amounts for gains; enter zero explicitly where appropriate. The calculator does not model reset events, a trailing floor, withdrawals or missing costs. Changing the baseline alone cannot make its capped formula represent all those rules.
Keep a calculation you can review
Copy calculation saves the current inputs, result and model limits to your clipboard. You can compare that note with your account's own dashboard and investigate a mismatch in definitions. For another scenario, the open-position risk worksheet adds entered cash losses at stops, while the drawdown calculator compares static and percentage-of-peak floors. Stops can slip and omitted costs can change an outcome, so neither result verifies an executable maximum loss. The prop-rules dashboard provides chart-based monitoring from manual account inputs; it does not automatically synchronize or enforce broker-account limits.