DISCIPLINE GUARD
فارسی Log in Start free trial

Risk of ruin calculator

See how often a run of losses could take your account down to a level you call ruin.

Your numbers

Share of trades that win.

R = what you risk on one trade. 1.5 means the average win is 1.5 times the risk.

The loss from your starting balance you would call ruin. For a prop challenge, use the firm's maximum loss, for example 10.

Result

Turn on JavaScript to use this calculator.

Your inputs stay in this browser. Nothing is sent to us.

How it works

We play your numbers 10,000 times, trade by trade. A win adds risk × average win to the balance; a loss takes away the risk. Each run stops when it falls to your ruin level. The result is the share of runs that got there.

What to do with this number

The fastest way to lower the risk of ruin is to lower the risk per trade. Try 1% and then 0.5% with the same win rate and see the difference.

Be honest with the inputs. Use your last 50 to 100 trades, not your best month.

Discipline Guard keeps your risk per trade and your total open risk inside the limits you set.

Related article

Let the panel do this on every trade

The panel keeps every trade at your chosen risk %, so the numbers you plan are the numbers you trade.

Start free trial

Get new articles by email

Only about trading discipline and Discipline Guard.

For planning and learning only. Not investment advice. Trading involves risk.