What Is Scalping? A Guide to High-Frequency Trading

Most scalping happens on the one-minute to five-minute chart, with a higher timeframe used only to set directional bias. A typical scalp targets a move of five to fifteen points on a major forex pair or a handful of ticks on an index future, held for anywhere from a few seconds to a few minutes.

Because the target is small, the entry has to be precise. Scalpers generally trade off order flow, a specific level, or a short-term momentum trigger rather than a broader pattern, since a broad pattern's normal noise is often larger than the whole intended profit.

Every trade pays the spread, and on many accounts a commission on top of it. For a position holder targeting 200 points, a two-point spread is a rounding error. For a scalper targeting ten points, that same two-point spread is 20% of the entire target before the trade has even moved.

This is why scalpers concentrate on the tightest-spread instruments and the most liquid hours, and why a strategy that looks profitable on paper can turn unprofitable once realistic costs are applied. Before scaling up size, it is worth totalling the spread and commission paid over a week of scalping and comparing it to gross profit — if costs are consuming a third or more of the edge, the strategy needs fewer, better trades rather than more of them.

A funded account's daily drawdown limit is a fixed percentage of the starting balance, reset each day. Scalping's core risk is that a high trade count compounds quickly: five losing scalps at 0.6% risk each consume 3% of the account before lunch, and a sixth loss can end the trading day or the account itself.

The instinct under a small loss limit is to raise size per trade to make each scalp count. That is precisely the wrong response — it converts an already high-frequency style into one where a short losing streak, which is normal in scalping, becomes account-ending. The sustainable approach is to reduce size per trade so that the daily limit still allows for a realistic losing streak rather than two or three trades.

Scalping needs liquidity, and liquidity is not constant through the day. The London and New York overlap generally offers the tightest spreads and most consistent order flow on major forex pairs, while thin periods such as the late Asian session or the hour before major news tend to have wider spreads and less reliable follow-through on small moves.

Trading the same setup in a low-liquidity window can turn a normally viable scalp into a losing one purely because of execution cost, independent of whether the read on price was correct. Matching session to instrument, and avoiding the minutes immediately around scheduled news releases when spreads typically widen sharply, removes one of the more avoidable sources of loss in this style.