Prop Firm Challenge Math: Calculating the True Edge of Two-Step Evaluations

Prop Firm CRMMost prop firms in 2026 do not know their actual edge on two-step evaluations. The math is simple once you see it, but small changes in pass rates, refund policies, and payout ratios shift firm profitability by 15 to 30 percent either way. Here is how to actually calculate it.

I build financial models for prop firms at Infy Trade Tech. Over the last four years I have modeled unit economics for 60 plus firms, from a new Bali based firm doing 12,000 dollars a month in challenge revenue to a Dubai firm clearing 4.8 million dollars a month. What surprises me every time is how few founders can tell me their real edge per dollar of challenge fee. Not the marketing number. The actual expected value.

If you run a prop firm and cannot answer "for every 100 dollars in challenge fees, how much do we keep after all payouProp Firm Infrastructurets, refunds, and admin costs" within 5 percent accuracy, you are flying blind. And in 2026, with refund policies and instant funding compressing margins, that is dangerous.

The core math (simpler than you think)

The expected profit per challenge, from the prop firm perspective, is:

THE MASTER FORMULA

EV per challenge = Challenge Fee − (Pass Rate × Expected Payout) − Refund Cost − Admin Cost

That is it. Everything else is figuring out the four variables.

Let me use a realistic 2026 example. A 100,000 dollar challenge account. Fee equals 500 dollars. Two step evaluation with 8 percent Phase 1 target, 5 percent Phase 2 target, 10 percent max drawdown throughout, then 80/20 profit split on the funded account.

WORKED EXAMPLE · $100K CHALLENGE, $500 FEE

Pass rate through both phases: 5% (industry norm for these parameters)

Payout rate on funded: 40% of funded traders earn their first payout

Average lifetime payout per funded trader: $2,800

Expected payout per challenge sold = 5% × 40% × $2,800 = $56

Refund cost (fee refunded on first payout): $500 × 2% = $10

Admin cost per challenge (server, KYC, CRM, disputes): $12

EV per challenge = $500 − $56 − $10 − $12 = $422

That is the edge. About 84 percent margin on paper. But wait.

Where the math gets uncomfortable?

The 422 dollar number assumes your pass rate stays at 5 percent. Which it will not.

Here is what happens as skilled traders find your firm. In year one, when you are new, your challenger pool skews toward retail traders trying prop firms for the first time. Pass rate might be 3 percent. In year three, when experienced prop firm hoppers know your rules, pass rate climbs. Every 1 percent increase in pass rate above 5 percent reduces EV per challenge by roughly 11 to 14 dollars depending on your average lifetime payout.

I modeled a firm last quarter that started at 3 percent pass rate in 2023 and hit 8 percent by mid 2026. Their EV per challenge dropped from 478 dollars to 354 dollars without them changing a single rule. They thought they had a growth problem. They actually had a rule drift problem.

The Phase 1 to Phase 2 conversion is the lever

Two step evaluations have a hidden lever most founders ignore. The conversion rate from Phase 1 to Phase 2.

Industry benchmarks, September 2026

CURRENT MARKET DATA

Phase 1 pass rate: 8 to 15% (of total challenge takers)

Phase 2 pass rate: 30 to 40% (of Phase 1 passers)

Combined pass rate: 3 to 6%

If your Phase 1 target is 8 percent profit and Phase 2 is 5 percent, and your combined pass rate is 5 percent, that means roughly 12 percent of your traders are passing Phase 1. About 40 percent of those pass Phase 2.

Here is the lever. Small changes to Phase 2 targets have outsized impact. Dropping Phase 2 from 5 percent to 4 percent target typically bumps Phase 2 conversion from 40 percent to 50 percent. Combined pass rate jumps from 5 percent to 6.25 percent. EV per challenge drops by around 18 to 25 dollars.

That is why the top firms in 2026 test Phase 1 and Phase 2 targets separately. Phase 1 is where you filter for skill. Phase 2 is where you filter for discipline. They are different math.

The refund policy trap

Fee refunds became standard in 2025. About 82 percent of top 100 prop firms offered refund on first payout by mid 2026. Founders love the marketing (higher conversion on the sales page). Most underestimate the cost.

Here is why. A refund policy does two things at once. It increases your challenge sell through rate (good). It also attracts more skilled traders who are more likely to actually pass (bad, from an EV perspective).

I modeled a firm that added refund on first payout in January 2026. Their challenge sales jumped 34 percent. Their pass rate also climbed from 4.2 percent to 6.1 percent over 8 months because better traders showed up. Net EV per challenge dropped 9 percent. Total revenue grew 22 percent because volume more than compensated. But margin compressed.

The math they should have run beforehand:

THE BREAK-EVEN FORMULA FOR REFUNDS

Break-even sell-through increase = Refund cost as % of fee ÷ (1 − post-refund EV margin)

For their setup this was 4.8 percent. They needed at least a 4.8 percent jump in sell through to break even on the refund policy. They got 34 percent, so it worked. But they should have known the number, not guessed.

Scaling plan math nobody talks about

Scaling plans compound the payout obligation. Most firms in 2026 offer allocation doubling every 10,000 dollars profit. That sounds fair. The math is trickier than it looks.

A trader who reaches 50,000 dollars profit on a 100,000 dollar account has, through scaling, been given progressively larger allocations. If they lose 5 percent on the fifth stage (400,000 dollar account), that is a 20,000 dollar loss. On 100,000 dollar account terms, that is a 20 percent drawdown.

Most firms include a rule that scaling drawdowns hit the original allocation, not the scaled one. But some firms in 2026 (about 30 percent by my count) forgot to add this rule when they launched scaling plans. Those firms are exposed to tail risk they did not price.

If you offer scaling, you need to model the profit and loss path of the top 10 percent of your funded traders separately from the median. The tail matters.

The five numbers every prop firm founder should track weekly

I make founders track five numbers. Weekly. If any move by more than 15 percent versus baseline, something has changed in their business and they need to figure out what before it gets worse.

1.  Combined pass rate (Phase 1 through funded). Target: stable within 1 percentage point.

2.  Payout rate on funded (percent of funded who earn their first payout). Target: 35 to 45 percent.

3.  Average lifetime payout per funded trader. Target: 5 to 8 times challenge fee.

4.  EV per challenge sold. Target: stable within 10 percent.

5.  Time from challenge sale to funded account funded. Target: under 45 days average.

If any of these drift, your model is drifting. Fix it before it eats your margins.

FAQ

What is a realistic pass rate for a two-step prop firm challenge in 2026?

Combined pass rate through both phases typically lands between 3 and 7 percent. Anything under 3 percent suggests parameters too tight (traders will complain publicly). Anything over 8 percent suggests you are giving away edge.

How much does a two-step evaluation typically cost the challenger?

For a 100,000 dollar account, expect 400 to 600 dollars in 2026. For 200,000 dollars, 800 to 1,100 dollars. Below these ranges you are underpricing. Above them you are competing on premium branding.

Should I offer a refund on first payout?

It depends on your target market. If you compete for skilled prop firm traders, refunds are almost required now. If you serve first time challengers, refunds cost you more than they earn. Model both scenarios before committing.

What profit split is standard for the funded phase?

80/20 (trader/firm) is now standard as of 2026. 90/10 is common for high volume firms. 70/30 exists but is losing market share fast.

How do I know if my prop firm is actually profitable?

Track EV per challenge sold, not gross revenue. Gross revenue looks great until you calculate future payout obligations against it. Realistic net margin for a well run prop firm in 2026 is 25 to 45 percent on challenge revenue. Anyone claiming 70 percent plus margin is either accounting differently or headed for trouble.

What is the biggest math mistake prop firm founders make?

Assuming pass rates stay constant. They do not. Your first cohort is different from your fifth cohort. Model for pass rate drift.

Disclaimer

The numbers, formulas, and benchmarks in this article reflect data from prop firm implementations I have personally modeled at Infy Trade Tech between 2023 and mid 2026. Industry averages are drawn from a portfolio of 60 plus firm models across different account sizes, jurisdictions, and challenge structures. Every prop firm operates differently, and the math shown here is a framework, not a substitute for building your own model against your actual firm data. Pass rates, payout rates, and lifetime values shift over time and vary by geography, marketing channel, and challenge parameters. Test every assumption against your own numbers before making pricing or structural changes. This article is not financial advice and should not be used as the sole basis for prop firm business decisions.