## The Short Answer Slippage is the difference between the price you expected to pay for a forex trade and the price you actually got filled at. It happens when the market moves during the split-second between clicking buy or sell and your order reaching the server, especially during volatile news releases or thin liquidity. Slippage can be positive or negative, costing you extra pips or occasionally giving you a better fill. Understanding how spreads work helps explain why fills deviate from the quotes on your screen.

## Why Slippage Happens in Forex Slippage comes from how orders are matched. Your platform streams indicative quotes, but a market order is an instruction to fill at the best available price, not a locked-in price. When volatility explodes after an economic release, the quote on your screen can shift several pips before your order executes. In thin liquidity hours like the Asian session or the Sunday open, fewer orders sit at each price level, so even modest trades sweep through multiple levels. Slow broker execution makes it worse, which is why execution speed matters for active traders.

## Practical Ways to Reduce Slippage Use limit orders instead of market orders when precision matters, because a limit order sets the maximum price you will accept and can never fill worse than that. Trade during the London-New York overlap when liquidity is deepest and spreads are tightest. Avoid placing market orders in the first seconds after major news like CPI or non-farm payrolls, when slippage can exceed several pips in a blink. Keep position sizes modest so your orders do not chew through thin order books. You cannot eliminate slippage completely, but disciplined execution keeps it small.

## Positive Slippage and Hidden Costs Slippage is not always against you. When the price jumps in your favor between your click and the fill, you receive a better price than the quote showed, which is called positive slippage. But never rely on it as a strategy, because the same mechanism produces negative slippage when momentum runs against you. Some brokers advertise zero-slippage execution while quietly widening their spreads, so compare the total cost per trade rather than slippage alone. What matters is the sum of spreads, commissions, and slippage, not any single number in isolation.

## Frequently Asked Questions **When is slippage worst in forex?** It peaks during major news releases, rollover, and illiquid hours. Trade the busiest sessions and use limit orders to keep it near zero. **Do all brokers have slippage?** All brokers experience slippage on market orders. Honest ones show it transparently, while others hide the cost inside wider spreads. **Can a stop-loss order slip?** Yes, a stop becomes a market order once triggered, so it can fill several pips beyond your stop level in fast markets.