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How many bad days can you survive?

Your remaining drawdown and your daily loss cap make one number: how many maximum-loss days before the account is gone.

The short answer: days of runway = drawdown remaining ÷ your daily loss cap. Example numbers: $1,400 left and a $200 cap is 7.0 days ($1,400 ÷ $200). At a $100 cap the same $1,400 lasts 14.0 days.

Your accounts

Runway Drawdown ÷ daily cap
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Two bad days cost
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One bad day, every account Same trades, same day
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Cost to replace them all
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    How we check the math

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    Built in your browser from the numbers above. Nothing is uploaded, and the card carries your inputs with it — a result without its assumptions isn't worth passing on.

    Why days, not dollars

    Dollars are abstract. Days answer the question that matters on a bad morning: how many more of these before this account is gone?

    Under five is the line worth caring about — an ordinary losing streak ends the account. The quickest lever isn’t a better setup. It’s a smaller daily cap, which buys days.

    How it’s calculated
    runway = drawdown remaining / daily cap two bad days = daily cap x 2 every account = daily cap x accounts running replace them = cost per account x accounts running

    All of it runs in your browser. Nothing is sent anywhere.

    What this can’t tell you
    • How your drawdown is measured. A trailing limit moves as the account grows — the rule decoder works out where yours sits.
    • Whether you’ll honour the cap. A cap you trade through isn’t a risk control.
    • What it has cost overall. The cost calculator adds up every fee and reset.
    How many bad days can I survive on my drawdown?

    Divide what is left of your drawdown by your daily loss cap. Example numbers: $1,400 left at a $200 cap is 7.0 days, and at a $500 cap it is 2.8 days. This counts days that lose the full cap. The calculator flags anything under five days.

    Does running more accounts change the runway?

    Not the days. The calculator works out the runway for one account, so it stays 7.0 days. The dollars multiply when the accounts take the same trades: three accounts at a $200 cap lose $600 on one maximum-loss day ($200 × 3).

    Is the daily cap my firm’s daily loss limit?

    It can be, if you type your firm’s number. The cap here is the amount you choose to stop at. Your firm’s daily loss limit is a separate rule, so confirm it on your firm’s own page.

    Read next: daily loss limit vs max drawdown, and how an account can close without ever breaking the daily limit.

    Educational tool only. This is arithmetic on numbers you type in — it is not investment advice, it does not predict anything, and it has no opinion on what you should trade. Trading futures involves substantial risk of loss and many people who try it lose money. Past results, including your own, do not predict future results. Verify contract specifications with your broker and your account rules with your firm; both change.
    The journal has this runway sheet built in, next to a log that shows what your rule breaks cost. Journal & Workbook, $39 →

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    Prop firm rules checklist

    The questions to answer from a firm’s own rules page before you buy an evaluation. Drawdown type, daily limit, consistency, payouts, every fee.

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    Every result here is arithmetic on the numbers you type, not a prediction. How we check the math. Futures trading carries real risk of loss: read the Risk Disclosure.

    Rules Desk Journal and Workbook cover

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    Journal & Workbook

    The same arithmetic in a 500-row trade log that keeps score: your win-rate range, break-even, average result per trade, results by setup, and what rule breaks cost you. Plus an 18-page printable workbook.

    One spreadsheet, one PDF. Instant download, no subscription.

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    The Rules Desk Course

    Ten short lessons that turn these numbers into a weekly routine: rules you can check, a full trade log, checking a payout request against your firm’s rules, and a review that changes a rule only on evidence. Includes the $39 Journal & Workbook. Lessons 1 to 3 and 7 are free to read first.

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