Prop Firm Daily Loss Calculator — Free

Daily loss headroom calculator

Subtract today's net loss from a percentage of your baseline. This model caps the remaining allowance at the starting limit: a profitable day does not add credit. Check that this model matches your account's daily-loss rule before using the result.

The math — remaining allowance = baseline × rule% − max(0, −net P&L)

Start-of-day baseline ($)

Firms differ: some snapshot balance, some equity. Enter whichever your firm's rule uses.

Daily loss rule (%)

5% is an illustrative default. Check your firm's current terms and calculation model.

Realized P&L today ($)

Floating P&L now ($)

Include floating P&L only as defined by your rule. Enter 0 explicitly if it is excluded.

Remaining allowance · no positive-day credit

$3500.00

Limit $5000.00 (5% of $100000) · used $1500.00 (30%). $3500.00 remains under this capped-allowance formula.

Positive net P&L does not increase this allowance. This is not the distance to every firm's live equity floor or confirmation that an account is within its rules.

Copies the inputs, result and model limits to your clipboard for your own notes.

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.

Method: Remaining allowance = (baseline × rule%) − max(0, −(realized + floating)). Positive net P&L does not increase it. This is not a universal equity-floor buffer: it does not model positive-day credit, reset times, trailing rules or costs missing from your P&L.

Calculations run entirely in your browser — nothing you type is uploaded. Copy and download actions save your calculation locally. The site may record coarse tool actions under its privacy policy, without inputs, results, file contents or filenames.

Common questions

How is a prop firm daily loss limit calculated?

This calculator multiplies your baseline by the entered percentage, then subtracts any negative net P&L from that allowance. Your firm's actual rule can use different equity floors, baselines, costs and reset times. The 5% default is illustrative, not a verified firm preset.

Does floating P&L count against the daily limit?

Use your account's definition. This model combines realized and floating P&L as entered; explicitly enter 0 for floating only when your rule excludes it. It does not connect to a broker or check whether commissions, swaps and other costs are already included.

Why does a profitable day not increase the displayed allowance?

The formula uses max(0, −net P&L), so a positive day consumes no allowance and adds none. With a $100,000 baseline, 5% rule and +$2,000 net P&L, it shows $5,000. Distance from $102,000 equity to a fixed $95,000 floor would instead be $7,000; that is a different model.

Limits and trading risk

These tools calculate from your inputs, supported historical records or explicitly labelled teaching examples. They do not verify a live account, predict future returns or confirm that a broker or prop-firm rule has been met. Missing costs, floating losses and changed market conditions can materially change outcomes. Trading can lose the capital committed to it; check the stated method and your account specifications.

Read the risk disclosure