How to Backtest a Strategy Against Prop Firm Rules

A strategy can be profitable and still fail a prop challenge. Backtesting against the firm’s rules shows whether it survives them.

Step 1: Get your trade list

Use a backtest or at least 100 past trades with date, time, result in R and maximum adverse excursion.

Step 2: Apply the rules

• Convert results to dollars at your planned risk.
• Track each day’s total, including the worst intraday point, against the daily limit.
• Track the maximum loss floor: fixed for static, rising with the high for trailing.
• Check consistency: best day as a share of total profit.

Step 3: Run many starting points

Start the “challenge” on different dates. If a large share of start dates breach, lower risk or pick a firm with looser rules.

Step 4: Compare firms

The same trades can pass at a firm with a 10% static drawdown and fail at one with a 6% trailing drawdown. Use our trailing drawdown simulator.

A spreadsheet you can build in an hour

Columns: date, trade result in R, dollar result at your risk, running balance, running high-water mark, floor (static or trailing), daily total and daily worst point. Add conditional formatting to highlight any day where the daily total breaches the limit or the balance crosses the floor. Then change the risk cell from 1% to 0.5% to 0.25% and watch how many breaches disappear.

Prop firms we currently recommend

1. 1
   

   FundedNext Best for MetaTrader users

   Max account

   $200,000 (up to $4M through scaling)

   Profit split

   80%, up to 95%

   Fee from

   $59.99 USD (confirm at checkout)

   Our rating

   4.4 out of 5

   Visit FundedNext Read review
2. 2
   

   SabioTrade Best for learning while you evaluate

   Max account

   $1,000,000

   Profit split

   80–90%

   Fee from

   $139 USD (confirm at checkout)

   Our rating

   4.0 out of 5

   Visit SabioTrade Read review

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