Prop tool

Prop Risk Calculator

Enter your account size, your firm's daily and overall loss limits, and what you've lost so far — and see exactly how much room you have before the next trade.

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Free — no login
Works with any firm's rules
No execution, no signals

Map.Trade does not provide buy/sell signals, execute trades, or manage funds. It helps traders review historical performance, risk, and behavior.

Account balance / starting equity

Daily loss limit

Max (overall) loss limit

Loss so far today

Total drawdown so far

Daily room left (limit 5,000)

3,000

Max-loss room left (limit 10,000)

6,000

Suggested max loss on next trade

3,000

Most prop evaluations don't fail on a bad strategy — they fail on a single day where the trader lost track of how close the account already was to a limit. This calculator keeps both limits in front of you, in real numbers, before you act.

How to use it

1
Enter the rules
Account size plus your firm's daily-loss and max-loss limits.
2
Enter your losses
How much you've lost today and in total so far.
3
Read the room
See remaining daily and max-loss budget and the safe next-trade loss.
4
Decide deliberately
Size the next trade so it can't breach either limit.

Daily loss limit

The most you're allowed to lose in one trading day. The calculator shows how much of that daily budget you've already used and how much remains — the number that should cap your next position.

Max (overall) loss limit

The total drawdown that ends the account if breached. Tracking remaining max-loss room next to the daily limit means you're never surprised by the rule that actually terminates the challenge.

Remaining buffer and safe next trade

How the buffer works

The safe loss for your next trade is simply the smaller of your remaining daily room and remaining max-loss room — the most you can risk without breaching either rule. Size to that number, not to your ambition.

Profit target and consistency

Targets and consistency rules are progress measures, not breaches. Treat the target as a pace to walk toward over several sessions, and keep any single day from making up too large a share of profit if your firm enforces consistency.

Example challenge scenario

Example

A $100k account with a 5% daily and 10% max limit. After losing $2,000 today and $4,000 total: $3,000 daily room and $6,000 max room remain — so the next trade should risk no more than $3,000.

Track your buffers vs. trade blind

	With the buffer in view	Trading blind
Daily limit awareness	Remaining room is a number you can see	A guess until it's breached
Next-trade size	Bounded by the smaller buffer	Set by conviction
Revenge trades	Obvious when there's no room left	Easy to rationalise
Outcome	Fewer avoidable breaches	One bad day ends the account

Who it’s for

Challenge traders

Stay inside evaluation limits long enough to reach the target.

Funded traders

Protect a funded account where a breach means losing the account.

Multi-account traders

Apply the same buffer discipline across several rulesets.

Check the room here — monitor it continuously in your workspace.

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Map.Trade does not provide buy/sell signals, execute trades, or manage funds. It helps traders review historical performance, risk, and behavior.

Frequently asked questions

What is a prop risk calculator?

A tool that turns your firm's daily-loss and max-loss limits plus your losses so far into the remaining room and the largest safe loss for your next trade.

Does it connect to a specific prop firm?

No — you enter your firm's limits, so it works for any ruleset. Map.Trade is not affiliated with or endorsed by any prop firm.

How is remaining risk calculated?

Daily room = daily limit − today's loss; max room = max limit − total drawdown. The safe next-trade loss is the smaller of the two.

What about trailing drawdown?

Trailing rules are approximated conservatively; always confirm the exact mechanics (balance vs equity, and when it locks) with your firm.

Can it prevent a breach?

It shows how close you are so you can decide — it does not place, block, or modify trades. The decision stays yours.

Is this financial advice?

No. It is a deterministic planning calculator — no signals, no advice, no execution.

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