Historical test result
The paper traded for free. You pay 0.10 percent.
You pay 0.10 percent on every trade while the paper paid nothing. On a 100,000 dollar challenge account every dollar of that fee eats into the loss limit that can end your challenge.
You read a backtest, which is a historical simulation, and you wonder if you can trust it before you pay the fee. Many traders think a paper backtest already has fees inside. That idea fails once you look at where the paper traded.
The paper's exchange charged zero fees after 7.5 million USD volume. Your broker does not.
The paper ran on Bitfinex. That free tier counted the last 30 days. If you traded enough in that window, your fee dropped to zero.
HolaPrime, for example, offers no free trades for high volume. You pay on every trade, no matter how much you trade.
My test ran on BTCUSD, which is Bitcoin against the dollar. It covered 2020 to 2022.
Why the fee matters for your challenge
Your challenge ends when you hit the loss limit. Every fee you pay leaves you less room under that line. The paper did not face that cut, because it paid nothing after it reached that high volume. You face that cut on each trade you place.
You check a paper and you see a smooth climb. You forget that each step up in that climb skipped the fee you must pay. When you add your own fee, the same climb sits lower. The shape stays, but the cash you keep drops.
I keep my eyes on cash kept, not on paper gains. Paper gains tell you what the rules earned before costs. Cash kept tells you what lands in your account after you pay to trade. For a challenge, cash kept is the part that must stay above the loss limit.
Think of the loss limit as a wall. Each fee moves you a step closer to that wall. The paper starts far from the wall, because it skips those steps. You start with those steps counted in. That gap is why you must add fees before you judge a paper.
Where the fee hides in your report
Open a paper and you see trades with no fee line. You see the price where the trade opened and the price where it closed. You do not see a cut taken for the trade itself. That missing cut is the part that tricks you.
Your own broker report looks different. It lists each trade with its price and it lists what you paid to place that trade. Add those fees up and you get the total fee line. That total is real cash out of your account.
Many papers skip that total, because their exchange let them trade for free at high volume. You do not get that deal. When you read a paper, ask where the fee line sits. If you cannot find it, treat the paper gains as before costs, not as cash kept.
You want a report that shows costs next to gains. Look for a line that names fees, costs to trade, or cash paid out. When you find it, keep it next to the gains as you read. That side by side view keeps the cash kept in front of you.
Check your own report
You can run this check on your own report right now. Open your report and in five minutes compare the total fee line with zero, and if it shows zero, add your broker fee before you judge the trade. When the line already shows a fee, you know your report counts costs. When it shows zero, you know you must add the fee yourself before you trust the gains.
What I do
I never trust a paper result until I have added my own broker fee. I take the paper gains as before costs and I add what I must pay to trade. That habit keeps me from judging a test by cash it never kept. You can copy that habit on your next check.
Limits
These are historical test results, not a live account.
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