Free tool

Prop firm drawdown calculator

Enter your account size, your firm's drawdown allowance and your daily results. See where the floor is now, how much room is left, and how the same days would look under each of the four drawdown rules.

Runs in your browser. Nothing you type is sent anywhere or stored.

Starting balance

Maximum drawdown

Drawdown type

Your days, oldest first

Day P&L

Drawdown floor now

$50,500

Trails $2,000 below $52,500, the high-water mark.

Room to the floor

$1,200

Balance $51,700.

Day	P&L	Close	Floor	Room
D1	$1,000	$51,000	$48,000	$3,000
D2	$1,500	$52,500	$49,000	$3,500
D3	-$800	$51,700	$50,500	$1,200

Floor is the one in force during that day: from earlier closes on an end-of-day rule, and including that day’s peak on an intraday rule.

The same days under each rule

Static$48,000
Trailing end of day$50,500
Trailing intraday$50,900
Trailing, locks$50,000

How it works

Every rule starts from the same two numbers: the starting balance and the maximum drawdown, the most the account may fall. What differs is where the floor is measured from.

Static floor = starting balance − maximum drawdown
Trailing floor = highest balance so far − maximum drawdown
Locking floor = the lower of (trailing floor, lock level)

For a trailing rule, “highest balance so far” is the part firms define differently. On an end-of-day rule it is the highest closing balance. On an intraday rule it is the highest balance at any moment, including open profit, so it can only be the same or higher.

A worked example

A $50,000 account with a $2,000 drawdown trades three days: +$1,000, +$1,500, then −$800. The closes are $51,000, $52,500 and $51,700.

Static: the floor stays at $48,000. Room: $51,700 − $48,000 = $3,700.
Trailing end of day: the highest close is $52,500, so the floor is $50,500. Room: $1,200. The same three days leave less than a third of the room.
Trailing, locked at the start: the trailed floor would be $50,500, but it stops at $50,000. Room: $1,700.

The day-by-day table shows the floor in force during each day, which is what decides whether that day broke the rule. On an end-of-day rule the floor only moves at the close, so a day is judged against the floor set by the days before it.

For the reasoning behind each rule and how to trade around them, read how trailing drawdown works.

Questions

What is a trailing drawdown?

A maximum drawdown whose floor moves up as your account makes new highs, always staying the same distance below the highest balance. It never moves down. A static drawdown's floor stays at the starting balance minus the allowance forever.

What is the difference between end-of-day and intraday trailing?

End-of-day trailing moves the floor from your highest closing balance, so profit you give back before the close does not raise it. Intraday trailing moves it from your highest balance at any moment, open profit included, so a winning trade you let turn into a loser still raised your floor.

What does it mean when a trailing drawdown locks?

The floor trails as normal until it reaches a set level, usually the starting balance, and then stops moving. After that it behaves like a static floor. Some firms lock slightly above the start; enter that level in the calculator.

Why does the intraday result say 'at least'?

An intraday floor depends on the highest open profit of each day. If you do not enter it, the calculator can only use your closes, and the real floor may be higher. Enter each day's best open P&L for an exact figure.

Is this the same maths as Traquil's prop page?

Yes. The floor logic is ported from the app's own prop standing code and checked against the same hand-worked cases the app's test runs.

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