Prop Firm Evaluation Math

What is a Prop Firm Evaluation Calculator?

A prop firm evaluation calculator translates the raw parameters of a proprietary trading firm's evaluation — profit target, trailing drawdown limit, and contract specifications — into the exact number of points, ticks, and trades you need to pass or fail. Enter your firm's rules and your planned trade size, and the calculator tells you precisely how much room you have before the account is blown.

A proprietary trading firm (prop firm) offers traders access to a funded account in exchange for a monthly fee and a passed evaluation. The evaluation requires you to hit a profit target without breaching a maximum drawdown limit. Firms like Topstep, Apex Trader Funding, MyFundedFutures, and TradeDay advertise accounts by headline size — $25,000, $50,000, $150,000 — but the number that actually governs your risk is the trailing drawdown limit, typically $1,000 to $2,500 on accounts marketed as five and six figures. This calculator makes that math visible before you place a trade.

How to Use the Prop Firm Evaluation Calculator

1. Select your futures instrument: Choose the contract you trade — NQ, ES, MNQ, MES, or another supported instrument. Point values are pre-loaded for each contract.
2. Enter your evaluation parameters: Input the profit target and maximum trailing drawdown from your firm's evaluation rules, using the exact dollar figures from your account dashboard.
3. Enter your trade sizing: Set the number of contracts you plan to run and your planned stop loss in points per trade.
4. Read the output: The calculator shows points to profit target, points until drawdown breach, and how many losing trades at your stop size the account can absorb before failing the evaluation.

The Illusion of the "$50,000" Prop Firm Account

The online day trading space is dominated by proprietary funding firms (like Topstep, Apex Trader Funding, MyFundedFutures, TradeDay, etc.) offering traders massive "$50,000" or "$150,000" accounts for a small monthly fee.

However, the headline account size is an illusion. The only number that matters is the max trailing drawdown. If a $50k account has a $1,500 drawdown and a $3,000 profit target, you do not have a $50,000 account. You have a highly-leveraged $1,500 account where you are required to generate a 200% return on balance without losing 100% of your balance.

Why This Calculator Helps

Most prop firm traders fail (over 90%) because they use the sizing logic of a $50,000 account on a $1,500 true margin balance. This calculator takes your Profit Target and Drawdown Rules and breaks them down mathematically based on the instrument you trade (e.g. NQ, ES, MES).

If the calculator tells you that your $1,500 drawdown means you blow the account after losing just 75 points on the NQ with one contract, you will instantly realize that running 3 contracts with a 30-point stop loss will fail your evaluation in a single bad trade.

Trading Micro vs Mini Contracts

• E-Mini (ES / NQ): High leverage. A standard $50k account requires roughly 150 NQ points or 60 ES points to pass, but a few bad candles will hit your drawdown limit instantly.
• Micros (MES / MNQ): Trading 1/10th the size, you need 10x the points to reach the profit target. While passing takes longer, your odds of survival against intraday volatility are exponentially higher.

Who Is This For?

• Futures traders currently in an active evaluation who need to calculate exact contract sizing limits so a single stop-out sequence cannot end the evaluation — particularly on firms using intraday trailing drawdown rules.
• Traders comparing multiple firm offers (Topstep vs Apex vs MyFundedFutures vs TradeDay) who want to strip each headline account size down to its real drawdown math before paying a monthly fee.
• Funded traders scaling up after passing who need to determine how much realized profit buffer they require above the drawdown floor before safely adding a second or third contract to the funded account.

Key Benefits

• Reveals the true account size: Converts the headline "$50,000" figure into the actual capital at risk — typically $1,000–$2,500 based on trailing drawdown rules — so your sizing logic matches reality.
• Free, no account required: Run as many evaluation scenarios as you want, across as many firm comparisons as you need, at no cost.
• 100% private: Your firm parameters, drawdown limits, and contract sizing are calculated entirely in your browser — nothing is transmitted to any server.
• Supports major futures contracts: Handles NQ, ES, MNQ, MES, and other instruments with correct point values pre-loaded so you get accurate breakeven math without manual conversion.

Common Use Cases

Sizing a $50k NQ evaluation: A trader with a $3,000 profit target and $1,500 trailing drawdown enters one NQ contract with a 30-point stop. The calculator shows the $1,500 drawdown is only 37.5 NQ points away — meaning two back-to-back stop-outs could end the evaluation. The output makes the choice clear: switch to MNQ, or cut the stop to under 15 points and widen the target accordingly.

Comparing two firm offers side by side: Firm A offers a $50k account with a $2,500 EOD trailing drawdown. Firm B offers the same headline size with a $1,500 intraday trailing drawdown at the same monthly price. The calculator shows Firm A's EOD structure gives nearly twice the effective point buffer per contract — a meaningful difference that the headline sizes obscure entirely.

Scaling a funded account after passing: After passing with one NQ contract, a trader wants to add a second. They use the calculator to determine the minimum realized profit buffer above the drawdown floor required before running two contracts — so a losing day on size does not cost them the funded account they spent months earning.

Frequently Asked Questions