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What a simulation misses, and how to make the transition
Published by The Retail Trader · AUG 09, 2026 · Trading Psychology
In paper trading everything works, and with real money the same system behaves differently. A large part of this is psychology, but not all of it — some mechanical things are missed too.
In paper trading your order always fills at the price you chose. In real trading, slippage, partial fills and the spread all apply.
Charges are also often not counted in a simulation, and in strategies with small targets they eat the whole edge.
This part is bigger:
• In paper trading a loss costs nothing, so following rules is easy.
• In real trading every small move becomes an actual rupee number.
• In a simulation there is no pain from a missed trade — in real trading it spoils the next decision.
• So the paper result is an upper bound, not an expectation.
Make the transition at the smallest possible size — so small that the result does not matter. The aim is not to make money; the aim is to see whether your behaviour stays the same with real money.
This article is for education only — it is not a buy or sell recommendation, makes no claim of guaranteed returns, and is not advisory. Rules, rates and mechanics change from time to time with the exchange, SEBI and RBI, so verify every number yourself with your broker or an official source.