Test Before You Pay: Backtest Your Strategy Before You Buy an Evaluation

Education

Buying an evaluation is paying to have your trading tested. The strange part is how many traders pay for that test before they've ever tested their trading themselves.

If you don't know your win rate, your average winner, your longest losing run or what your worst day looks like, you don't know whether your strategy fits inside a firm's rules. The evaluation will tell you, but at the price of the fee, and often after a reset or two.

A backtest tells you first, for free or close to it. This post covers what to measure, how to collect it, and how to check the results against a firm's rules before you buy anything.

What You're Actually Trying to Learn

A backtest isn't about proving a strategy is good. It's about learning what normal looks like for it, so nothing in the evaluation surprises you. You want five numbers:

1. Win rate. The share of trades that win. On its own it means little. A 35% win rate can be very profitable, and a 70% one can lose money.

2. Average winner and average loser, measured in R (multiples of what you risked). Together with the win rate, these tell you whether the strategy makes money at all.

3. Longest losing run. The most losses in a row. This decides how much risk per trade the drawdown can survive.

4. Worst day. The biggest loss in one session. This decides whether you'd hit a daily loss limit.

5. Best day as a share of the total. If your profit tends to come from a few big days, a consistency rule will slow you down.

Write down two more facts while you're at it: how many trades you take on a typical day, and how long you hold them. Those tell you whether a firm's holding rules, news rules and minimum-hold rules fit your style.

Step 1: Backtest on Replay

The fastest way to collect a sample is to replay past price action and take your setups as if it were live: price moves forward one bar at a time, you can't see what's coming, and you record every trade.

Bar replay on TradingView works on the same charts you already use. Pick a start date, hide the future, and step forward. Some timeframes and features need a paid plan.

FX Replay is built for exactly this. It replays historical futures, forex and crypto data with a simulated account, tracks every trade, and builds the statistics for you, which saves hours of spreadsheet work.

However you do it, follow three rules:

Take every setup that meets your rules, not just the ones that look good in hindsight. Skipping the ugly ones is how a backtest ends up better than real trading.

Log the trade before you see the outcome. Write the entry, stop and target first, then step forward.

Collect enough trades. Twenty trades tells you almost nothing. Aim for at least 50, and 100 or more if you can. A losing run of eight only shows up in a big enough sample.

Step 2: Check the Base Rates

A replay backtest tests your whole strategy, including your judgment. A statistics tool answers a narrower question: how often does the thing your setup depends on actually happen?

If your strategy assumes the opening range high gets taken out most days, or that price returns to a gap most of the time, you can check those rates across years of data rather than trusting what it felt like on the last ten charts. edgeful has ready-made reports for questions like these on futures, forex and stocks. If the base rate your strategy relies on isn't there, no amount of execution will fix it.

Step 3: Forward Test on a Demo

A backtest shows you the strategy. A forward test shows you, trading it in real time, with no fast-forward button and the urge to act on every move.

Trade it on a demo or simulated account for a few weeks with the exact risk and daily stop you'd use in the evaluation. Compare the results with your backtest. If the forward test is noticeably worse, the gap is usually execution: late entries, skipped setups, moved stops. That's worth knowing before you're paying for it.

Step 4: Check Your Numbers Against the Firm's Rules

Now line your numbers up against the rule sheet of the firm you're considering.

Match each number from your backtest to the firm rule it tests: longest losing run against the maximum drawdown, worst day against the daily loss limit, best-day share against the consistency rule, and holding time and trading hours against the holding and news rules

Longest losing run × risk per trade should be well under the maximum drawdown. On a $2,000 drawdown with a worst run of eight losses, $200 a trade gives $1,600, which is too close. $150 gives $1,200 and leaves room for a worse run than you've seen.

Worst day should sit well inside the daily loss limit. If your worst day was $900 and the firm's daily limit is $1,000, you're one bad day from a breach, whatever your daily stop says.

Best-day share should fit the consistency rule. If your best day is usually around half of your profit, pick a firm without a consistency rule or with a looser one.

Holding time and trading hours should fit the holding and news rules. A strategy that holds through the 5pm ET close doesn't belong on a futures account that requires you to be flat by then.

If your numbers don't fit a firm's rules, that's not a reason to bend the strategy. It's a reason to pick a different firm. We cover the main rule differences between firm types in Futures vs CFD vs Crypto Perps Prop Firms, and the rules themselves in Prop Firm Rules Explained.

The Tools We Use

These are the backtesting and charting tools we use and partner with. The full list is on our Partners page. These are partner links: if you use them we may earn a commission, at no extra cost to you.

This Is How Phantom Approaches It

Phantom is built to be tested. Every setup has objective rules, so two people replaying the same chart should log the same trade, and the course teaches you to collect your own data before you risk money on it: studying known trades, marking up every session, then forward testing and comparing your winners with your losers. Foundations covers forex and CFDs and Futures covers index futures, and both have free preview lessons.