Interactive Calculator — Run Your Numbers Before You Pay for Any Challenge
What this calculator tells you, in plain English
More than 80% of prop firm challenges fail — and it is almost never because of a bad setup. It is because traders start a 45-day FTMO, Funded Next, or Topstep evaluation without ever checking whether the math of their strategy supports a pass. This calculator takes three numbers from your own Gold (XAUUSD) trading — how often your trades reach the 1.5R partial close zone (P1), how often those trades continue to your 2R target (P2), and your stop loss distance. It shows you exactly what 200 trades looks like in dollar terms, whether your partial close is helping or hurting, and whether your current numbers put you in challenge-pass territory or on a slow bleed toward the drawdown limit. Drag the sliders. The numbers update instantly. Find your real edge before you risk your evaluation fee.
Why Most Traders Fail Prop Firm Evaluations (It Is Not Their Setups)
Studies across multiple prop firm platforms consistently show that more than 80% of funded account challenges fail. The official reason is usually "violated the drawdown rule" or "hit the daily loss limit." The real reason underneath is almost always the same: the trader never calculated what their strategy needed to look like over the evaluation period.
They had a setup. They had entries. They had no idea how many of those entries needed to work, how many consecutive losses to expect at their win rate, or whether their partial close math actually supported a positive expectancy at their chosen lot size.
Ask any prop firm risk desk what causes most challenge failures and the answer is almost never bad technical analysis. The consistent culprits are revenge trading after a losing streak, doubling size to recover a bad day, taking marginal setups in the final week when the profit target feels out of reach, or panicking when a losing streak hits and making decisions that end the challenge early.
All of those behaviours share one root cause: the trader does not trust their numbers because they never ran them. The fix is running the math before Day 1. That is what the calculator on this page is for.
The Partial Close Strategy: Your Three Trade Outcomes
Most traders think every Gold trade has two outcomes: a win or a loss. If you trade XAUUSD with a partial close at 1.5R, you have three distinct outcomes — and understanding all three is the foundation of passing any prop firm challenge.
- Full loss. Gold hits your stop loss before reaching the 1.5R zone. You lose your full risk amount. A clean -1R.
- Partial capture. Gold reaches the 1.5R zone. You close half the position for profit, move the remaining stop to entry (breakeven), then Gold reverses. The second half closes at breakeven. Net result: approximately +0.75R. This trade would have been zero in a simple strategy. With the partial close, it becomes a winning trade.
- Full win. Gold reaches 1.5R (you close the partial), then continues to your 2R target. Net result: approximately +1.75R.
That middle outcome — the partial capture — is the mathematical engine separating prop firm passers from blowers. It converts trades that would otherwise be full losses into modest gains, shifting your expectancy dramatically. Drag the P1 and P2 sliders in the calculator and watch the trade distribution change in real time to see exactly how much this matters at your numbers.
How to Use the Calculator: What Each Input Means
P1 — Trades reaching your 1.5R zone. Out of every trade you take, what percentage actually reach your partial close zone before the stop is hit? This is your entry quality score. If you set a 200-pip stop and your 1.5R target is 300 pips away, how often does Gold travel 300 pips in your direction? Most traders find their honest P1 is lower than expected — often 40-60%. Set the slider to your realistic estimate, then drop it 10% to stress-test.
P2 — Of those 1.5R trades, how many reach the full 2R? Once Gold passes your partial close zone, does it keep running or reverse? If Gold frequently hits 1.5R and reverses sharply, your P2 might be 30-50%. If your setups run cleanly, it might be 60-75%. Look at the calculator — when P2 drops below about 87.5%, the partial close beats holding full size. Above 87.5%, you are better off not closing early. That crossover is in the calculator output.
Stop loss distance and lot size. These set your 1R value in dollar terms. On XAUUSD at 0.02 lots, a 200-pip stop means 1R = $4.00 (100 oz × $0.01/pip × 200 pips × 0.02 lots). Change the lot size dropdown and the calculator scales all outputs instantly. The dollar figures let you see your realistic challenge trajectory — not just percentages.
The 45-Day Framework: Four Phases, One Clear Goal
Whether you are attempting FTMO Phase 1, a Funded Next Standard evaluation, a Topstep combine, or any equivalent challenge, the structure is consistent: profit target (usually 8-10%), maximum overall drawdown (5-10%), daily loss limit (4-5%), minimum trading days. Treating the 45-day window as four distinct phases keeps the math in your favour throughout.
Phase 1: Calibration (Days 1-10)
Trade your smallest position size. Your only goal is to establish real data for P1 and P2 — not to make money, not to chase the profit target. After 30-40 trades, plug your real numbers into the calculator. If the output is challenge-viable, move to Phase 2 with confidence. If not, you have spent almost nothing in drawdown and learned something critical before committing to full size.
Recommended risk in Phase 1: 0.25-0.5% of account per trade. A drawdown spike in the first 10 days costs you precious headroom for the rest of the evaluation.
Phase 2: Core Phase (Days 11-28)
You have real data. Move to your standard risk per trade and execute consistently. The partial close at 1.5R must be automatic and unconditional — not most of the time, every time. An edge only exists when executed consistently. Watch P2 specifically: if Gold keeps reversing sharply after your partial zone, current market structure is telling you something. Tighten your 2R target temporarily or take the partial and move on.
Phase 3: Target Push (Days 29-40)
If Phase 2 went well, you are within 2-3% of the profit target. This is where most FTMO and Funded Next failures happen. Traders see the finish line and get aggressive. Keep the same size and selectivity. Once within 1% of the target, reduce position size by 50%. You do not need to carry the same risk to close the final 1% that you needed for the first 7%.
Phase 4: Buffer Phase (Days 41-45)
You are at or near the profit target. Your only job is not giving it back. Take only your clearest, highest-conviction setups. Decline everything marginal. One impulsive trade in the buffer phase has ended more prop firm challenges than any losing streak ever has.
The Losing Streak You Must Prepare for Before Day 1
At a 40% win rate across 200 trades, a streak of 9-10 consecutive losses is statistically expected to occur at least once. This is not a sign your edge has disappeared. It is the mathematical consequence of running 200 independent events at that probability. Most traders know this in theory but have not prepared for it emotionally — so when trade 6 of a losing streak arrives, panic takes over.
The correct response: look at the calculator with your real P1 and P2 data, confirm your expectancy is still positive, reduce position size by 50% for the next three trades to protect drawdown headroom, and keep executing your setup. Do not skip trades. Do not size up to recover. Do not switch strategies mid-challenge.
Losing streaks feel like your edge has disappeared. The math says they were always part of the plan. Trust the math.
Three Daily Rules That Separate Passers from Failures
1. Check your drawdown before your first trade, not after. If you are within 2% of the daily loss limit before opening a position, halve your size for the entire day. This single rule prevents most daily-limit breaches — the number one way FTMO challenges end prematurely.
2. Write your psychology note at entry, not at exit. Log the trade — your reasoning, confidence level, any hesitation — before you know the outcome. Notes written after exit are contaminated by the result. Notes at entry reveal the honest patterns: overconfidence, FOMO entries, forcing setups you were not sure about. Those patterns, spotted early, are worth more than any technical edge.
3. Hard stop 30 minutes before your daily cutoff. Most prop firms reset the daily loss limit at midnight server time. Traders who breach it almost always do so in the final 30 minutes of the session, chasing recovery. Set a hard alarm. No trades inside T-30 minutes. No exceptions.
Finding Your Real P1 and P2 Numbers
The calculator is only as useful as the numbers you put into it. Gut-feel estimates of P1 and P2 are almost always too optimistic. The only reliable source is a logged trade journal where entry levels, partial close levels, and final exits are recorded consistently for every single trade.
After 30-40 trades with the partial close strategy logged properly: P1 = trades that reached 1.5R divided by total trades taken. P2 = trades that reached 2R after the partial divided by trades that reached 1.5R. Those two real numbers, plugged into the calculator, will tell you whether your prop firm challenge math holds up or whether you need to adjust before spending on evaluation fees.
TradeJournal tracks partial close levels automatically from your trade log. After 30 trades in the system, your real P1 and P2 appear in your analytics dashboard — ready to plug into this calculator and see the honest picture before you commit to any funded challenge.