Scalping costs of 1.8 pips per trade mean a 68% win rate is needed just to break even

Scalping sounds easy. No big forecast is needed: a trader simply picks up a few pips several times a day, and the small gains add up. But there is a hidden enemy that long-term traders rarely feel: the cost of every trade. When the target is very small, cost stops being background noise and becomes the main character of the story.

Scalping means opening and closing positions within seconds or minutes to profit from small price moves. The figures given here are simple examples. They are not quotes from any particular broker.

Start with the costs. Suppose a trader deals in a major currency pair. The spread is 1 pip, the commission is equal to 0.5 pip per trade and average slippage is 0.3 pip. Slippage is the difference between the price a trader expects and the price actually obtained. In all, each trade costs 1.8 pips.

Now suppose the target is 5 pips and the stop is also 5 pips. A winning trade yields 3.2 pips after the 1.8-pip cost is deducted from 5. A losing trade means a loss of 6.8 pips, the 1.8-pip cost added to 5. On paper the risk-reward was 1:1, but after costs it becomes roughly 1:2, and against the trader.

Without costs, winning 50% of trades at a 1:1 ratio would be break-even. But what win rate do these figures need? The formula is simple: the size of the loss divided by the sum of the size of the win and the size of the loss. That is 6.8 / (3.2 + 6.8) = 6.8 / 10 = 68%. A trader must win about 68% of trades just to break even. That is a very high bar. It is why many new scalpers feel they are winning most of the time, yet their accounts slowly drain.

Now cut the cost to 0.8 pip, by trading in the hours of highest liquidity and choosing a low-fee account. A win then brings 5 - 0.8 = 4.2 pips and a loss costs 5 + 0.8 = 5.8 pips. The break-even win rate falls to 5.8 / 10 = 58%. Saving just one pip per trade brings the required win rate down by ten percentage points. For a scalper, cutting costs is not a small matter. It is the strategy.

On the other hand, keep the cost at 1.8 pips, raise the target to 10 pips and leave the stop at 5 pips. A win yields 10 - 1.8 = 8.2 pips and a loss costs 5 + 1.8 = 6.8 pips. The break-even win rate is 6.8 / 15, or about 45%. When the target is large relative to the cost, the maths eases considerably. That is why some traders begin as scalpers and gradually lengthen their holding time.

Then there is the effect of the number of trades. Scalpers trade often. With 20 trades a day at 1.8 pips each, costs reach 36 pips a day before a single trade goes in the trader's favour. Over a month of trading days, this runs into hundreds of pips that must be earned just to stay in place.

Ways of tilting the maths in one's favour are also suggested. Trade the most liquid markets, where spreads are narrowest. Trade in peak hours, such as the London-New York overlap for major pairs. Avoid the time of major news, when spreads widen and slippage rises. Compare account types on total cost, not just the visible spread. Record the real cost, including slippage, in a journal. And trade less but better, since fewer, better trades mean lower costs.

Before scalping with real money, a trader should answer three questions. What is my real average cost per trade, including slippage? Given my target and stop, what win rate do I need to break even? And does my demo record show that I can actually achieve that win rate? A trader who cannot answer all three with figures is not ready yet, and there is no shame in that.

Scalping can work for a disciplined and well-prepared trader. But it rewards precision, not just speed. Know your costs, work out the numbers and let the maths tell you whether your strategy truly has merit. A small target demands close attention to detail.