Prop firm challenge calculator

Prop firm challenge calculator that runs 5,000 versions of your challenge against the drawdown floor, the daily loss limit and the clock, then reports your pass odds and which rule ended the rest. Enter your win rate, average win and average loss, and your firm's rules, or load the preset for Topstep, Apex, Earn2Trade or FTMO. Free, no signup.

  • free
  • no signup
  • runs in your browser
Load a firm:

Firm rules as last checked July 2026 — always confirm against your own account. Loading a preset only fills the rule fields; your edge stays yours.

Challenge rules
Your edge
Edge, before the walls -- Implied monthly --

Simulates 5,000 accounts trade by trade.

Every simulated account ends in a pass, a breach, or the clock running out

All 5,000 accounts, from the first trade to the one that ended them.

Passed Still trading Failed

The drawdown floor, the daily limit and the clock end most accounts

Multiply your win rate by your average win and you get a number that always looks good, because nothing in it can end the account early. That is what a trading expectancy calculator returns, and it is why a genuinely positive edge still fails challenges.

Each wall is checked after every single trade, in the order the firm checks them.

The drawdown floor

On a trailing account the fail level follows every new high, so a good week quietly pulls it up behind you until it locks at breakeven. On a static account it never moves.

--%of your 5,000 accounts died here

The daily loss limit

Judged on the day’s realized profit and loss, and reset every morning. It ends traders who were never close to the drawdown floor.

--%died on a single day

The clock

If the target isn’t reached inside the day limit, the account is over — not blown, just out of time.

--%ran out of days

The prop firm challenge calculator deals 5,000 accounts and counts the passes

Passing is a probability problem, so the engine plays the account out 5,000 times and counts what happens, in this order.

One ratio does most of the work: the profit target divided by the drawdown you are allowed to lose. On a $50,000 account The5ers asks $4,000 of profit against $5,000 of room, a ratio of 0.8. FTMO's 2-Step asks $5,000 against $5,000, exactly 1.0. Earn2Trade and Topstep ask $3,000 against $2,000 — a ratio of 1.5, so you have to make half again what you are allowed to lose. Type each pair into the simulator above and the pass rates separate immediately.

start Deal a fresh account

at your balance, with your firm’s rules

trade Flip a weighted coin

win rate decides; the payout is your avg win or avg loss, in R

check, in this order
  1. Below the drawdown floor?
  2. Past the daily loss limit?
  3. Reached the profit target?

repeat every trade, every day, until the account resolves or the days run out

  1. 01

    It deals 5,000 accounts, one trade at a time

    Every run starts a fresh account at your balance and trades it forward. Each trade is a coin weighted by your win rate: a win pays your average win in R, a loss costs your average loss in R, where 1R is what you risk per trade.

  2. 02

    After every single trade it checks the three ways you fail

    Firms liquidate on the trade rather than at the end of the month, so the model does too.

  3. 03

    The drawdown floor moves when it should, and stops when it should

    On a static account the floor sits still below your starting balance. On a trailing account it follows every new high, until it hits the level your firm freezes it at: Topstep stops it at your starting balance, Apex at your starting balance plus $100. The simulator models that lock.

  4. 04

    The account runs out of days

    If the target is not reached inside your day limit, that account is recorded as a time failure. Many futures evaluations set no time limit at all, so tick “No limit” rather than inventing a deadline your firm does not have.

  5. 05

    The percentage is just the count

    Pass probability is the share of those 5,000 accounts that reached the target without breaching anything. The breakdown beside it names which wall the rest hit, and that is usually the more useful number — if it is the floor, the drawdown calculator shows where yours sits today.

What it does not model

It assumes every trade is independent and your edge stays constant. Four things fall outside that.

  • No losing streaks that change how you trade, and no revenge trading after one.
  • No slippage and no commissions — both of which shrink every R you win.
  • Intraday excursions are invisible: a position that ran deep against you and recovered costs nothing here, but can end an intraday trailing account.
  • The consistency rule, minimum trading days and news restrictions are not modeled.

Pass probability is a rate across 5,000 attempts, not a forecast for your next one

Pass probability
The share of the 5,000 simulated accounts that reached the profit target without breaching anything. The same account dealt twice can end differently.
The breakdown
Of the accounts that failed, which wall ended them: the drawdown floor, the daily loss limit, or the clock. This is usually the more useful half of the result, because it names the rule you are actually losing to.
R
One unit of what you risk on a trade. Average win and average loss are entered in R so the answer holds at any account size: if you risk 1% of a 50K account, 1R is $500 and a 2R winner is $1,000.
Static and trailing floor
A static floor is set at the start of the challenge and never moves. An end-of-day trailing floor follows every new daily close until the firm freezes it, usually at your starting balance. The same trading passes at very different rates under the two.
Time failure
An account that breached nothing and never reached the target inside the day limit. It is not a blow-up, it is a deadline.

Related calculators

Either side of this page: the prop firm risk calculator sizes the trade this simulation is built on, and the trading expectancy calculator says whether the edge behind it is positive at all. Unsure about the floor? Model it on its own with the prop firm drawdown calculator. Once funded, the question is what you keep: payout, the consistency rule and evaluation cost.

01

Prop Firm Variance Calculator

Same edge, 1,000 accounts. See how many pass, how many breach on a bad streak first, and how deep the drawdown gets in between.

 02

Trading Expectancy Calculator

Do you have an edge? Turns your win rate and average win/loss into expected value per trade, in R and dollars.

 03

Prop Firm Drawdown Calculator

Static vs trailing drawdown. See exactly where your account gets liquidated.

Common prop firm challenge questions

How accurate is a prop firm challenge calculator?
It is a model, and it is only as good as the numbers you feed it. What it gets right is the mechanics: it checks the drawdown floor, the daily loss limit and the clock after every trade, in the order a firm checks them, so an account can end early the way a real one does. What it cannot see is you. Read the output as the shape of your odds, not a forecast.
What win rate do I need to pass a prop firm challenge?
There is no single number, and any site that gives you one is guessing. The win rate you need depends on your average win against your average loss, how much you risk per trade, how many trades you take, and how far the target sits from the drawdown floor. Change any one of those and the answer moves. Run your own four numbers above and the simulator gives you the pass rate they actually produce.
Why is my pass probability lower than my expectancy suggests?
Because expectancy cannot end an account early — it has no drawdown floor, no daily limit and no deadline in it. Most accounts that fail a challenge were profitable at some point on the way, and expectancy counts that profit as if it arrived. The gap between the two numbers is the reason this tool simulates instead of multiplying.
Does the calculator handle a trailing drawdown?
Yes, including the part most calculators skip. On a trailing account the fail level follows every new high, so a profitable week pulls it up behind you — but most firms stop the trail once it reaches your starting balance, and after that the account can no longer be lost to drawdown while you stay above breakeven. The simulator models that lock. Ignoring it makes a trailing challenge look far harder than it is.
What risk per trade should I enter?
Enter what you actually risk — the calculator does not recommend a risk level and cannot know your account. Risk moves the pass rate in both directions: too little and the clock ends you before the target does, too much and the drawdown does. The risk ladder under the result re-runs the whole simulation across eight levels, so you can see where your own number sits between those two failures.
Is this prop firm challenge calculator free?
Yes. It runs entirely in your browser, there is no signup and no email, and nothing you type is stored or sent anywhere.