Run your prop firm trading like an institutional trading desk.
Know your real odds before every challenge. A trade journal that measures your true edge, a simulation engine that prices your pass probability across thousands of paths, and a tracker that shows what you've actually made.
Another failed challenge: hundreds of dollars.
Knowing before you pay: $49.
Three tools, one system of record.
This is the real product surface — the same screens you get inside the workspace.
Price the challenge before you buy it
Configure the exact ruleset, run thousands of trade-by-trade evaluations, and read pass probability, failure modes, expected profit and long-run risk of ruin against your bankroll.
Simulation · thousands of paths
Distribution of end balances
Passing the challenge and reaching a payout once funded — the only number that pays.
Chance your $1,500 bankroll is gone before the edge pays off.
Failure mode breakdown
- Trailing / max drawdown44.0%
- Daily loss limit24.0%
- Consistency rule10.0%
- Ran out of time14.0%
- Missed phase-2 target8.0%
Why funded accounts don't pay
- Blew up (DD / daily loss)71.0%
- Never reached buffer / days29.0%
Payout assumptions
Auto-set to the simulated payout probability (60%) — drag to override.
Bankroll campaign · 20 challenges
Each faint line is one simulated trader buying 20 evaluations — down on failed evals, up on payouts. Median expectation is +$303 per challenge.
Using expected averages: cost = eval fee × challenges; payouts = challenges × probability of passing × probability of getting paid × avg withdrawal. ROI = net ÷ total cost.
Three steps from your real numbers to a distribution.
Enter your real numbers
Win rate, average win and average loss as a percentage of account, trades per day. Or pull them straight from your journal in one click.
Pick the exact ruleset
Account size, profit target, static or trailing drawdown, daily loss limit, consistency rule, minimum trading days, evaluation window, phase 1 and optional phase 2, plus funded-stage terms: profit split, payout rate, withdrawal size, eval cost. 20+ inputs, or load a firm preset.
Read the distribution
thousands of paths in about 60 seconds. Pass probability, funded probability, probability of an actual withdrawal, risk of ruin, expected profit per challenge, and net P&L over 5–200 challenges after every fee.
Most calculators ignore the rules that actually fail people.
Roughly 80% of failed evaluations come from drawdown mechanics and rule breaches, not from a bad win rate. Every one of these is checked on every simulated trade.
Trailing drawdown, tracked trade by trade
A rising equity line with a threshold that ratchets up beneath it, then locks.
Daily loss limits, checked every trade
An intraday path clipping the floor ends the day, and often the account.
Consistency rules
One oversized day can invalidate an otherwise passing evaluation.
One-phase or two-phase structures
Phase gates, evaluation windows and minimum trading days, modelled exactly.
True profit after every eval fee
A stepped net line that drops each time you buy another attempt.
Best case, median and worst case
Three divergent futures instead of one comforting average.
A distribution, not a number.
Move the sliders. Every figure re-prices against a lightweight approximation of the engine.
- Trailing drawdown42%
- Daily loss limit24%
- Profit target not met24%
- Consistency breach10%
Pass probability 79.2 percent, funded payout probability 97.0 percent, risk of ruin 2.0 percent, expected profit per challenge 440 dollars.
We don't take a cent from prop firms.
No signals. No Discord. No affiliate links. We charge traders $49 a month, which is the only reason the firm comparisons are worth reading. Rulesets and methodology are maintained by the Merx Research analytics team.
Trailing drawdown calculator
Where does your account actually get liquidated? Enter peak and current balance, see the breach line, remaining room, and whether the trail has locked. 20+ firm presets. Shareable link.
Twelve guides on how these evaluations really work.
One plan. $49 a month.
- Unlimited full simulations
- One- or two-phase challenges
- Full funded-stage simulation
- Joint probability of withdrawal
- Dual failure breakdowns
- Expected profit per challenge
- Sample equity curves over N challenges
- Live payout sliders & sensitivity
- Persistent trade journal with Sharpe
- Performance tracker with net equity curve
Questions traders actually ask.
Why simulate 100+ challenges instead of one?
A single evaluation is one draw from a wide distribution. Chaining attempts shows what actually happens to your capital over a year of trying, after every fee.
What's the difference between pass probability and long-run EV?
Pass probability is the chance of clearing one evaluation. Long-run EV is what you keep after repeated attempts, funded-stage payouts and every eval fee you paid to get there.
How is pass probability calculated?
We simulate thousands of attempts, each played trade-by-trade against the exact ruleset you configure — drawdown, daily loss, consistency, minimum days, profit target.
How is this different from free calculators?
Most free tools treat drawdown as static and ignore the consistency rule. Both materially change the odds, usually downward.
Do you cover all the major firms?
Pre-built rulesets cover Apex, Topstep, MyFundedFutures, Take Profit Trader, FTMO, FundedNext, The5ers, E8 and more. Any published ruleset can be configured manually.
What does expected profit per challenge mean?
Average net result of one evaluation attempt across all simulated paths, including the fee you paid and any funded-stage withdrawals.
How do I read P25/P50/P75?
P50 is the median outcome. A quarter of simulated paths land below P25 and a quarter above P75 — the band is your realistic range.
Why a range instead of one number?
Because trading outcomes are distributions. A single number hides the tail that actually blows accounts.
What does the performance tracker do?
It records every challenge purchased, every payout taken, and reports net equity, cost per funded account and realised ROI by firm.
Can I cancel anytime?
Yes, from your account settings. Access continues to the end of the billing period.
Stop paying to find out.
Run your numbers against the exact ruleset before you buy the next evaluation.