Risk Management Engine

Prop Firm Drawdown Calculator

Eliminate accidental account breaches. Accurately compute your Trailing Drawdown threshold, Daily Max Loss limit, and real-time dollar loss buffer.

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$
$
Your open floating equity or closed balance
$
Highest balance ever reached on account
%
%
$
Safe Sizing Calculator (Based on Remaining Buffer)
Max Risk of Buffer Per Trade
Trade Stop Loss (Pips)
Account Health Safe Standing
Total Breach Level (Floor)

$90,000.00

Liquidation

Threshold is fixed to your starting balance of $100,000.

Total Loss Buffer Remaining 13.5%
+$13,500.00
Breach ($0) Plenty of headroom Full Buffer
Daily Breach Floor $97,660.00 5% of today's start
Daily Loss Buffer +$5,840.00 Can lose today
Max Trade Risk Allowed $1,168.00
Safe Lot Size (20 pips SL): 5.84 Lots
💡 Pro Tip: Calculate lot sizes using your remaining drawdown buffer, not your total balance. This guarantees you never blow an account on a 3-trade losing streak.

Why Traders Fail Prop Firm Drawdown Rules

1

The Trailing Trap

With trailing drawdown (e.g. Apex, Topstep), if your $100k account runs up to $104k and gives back $3k, your liquidation threshold trailed up to $99k! Your buffer shrank even though you are in net profit.

2

Equity Peak at Midnight

Many prop firms reset daily drawdown at server midnight (5 PM EST) based on whichever is higher: balance or open equity. If you leave open winners overnight, your daily loss limit moves up!

3

Oversizing on Buffer

Risking 1% of a $100,000 account ($1,000) when your remaining drawdown buffer is only $2,000 actually means you are risking 50% of your account life in a single trade!

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