The term "Slippage" is every trader's worst nightmare. This is a negative factor in forex. Can it be avoided? No. Can it be minimized? Yes. On any market, liquidity risk is a factor. Traders who chose to deal with market makers instead of having Direct Market Access (DMA/STP) often experience this. Slippage is best minimized if you choose a well-known fair forex broker. You need a broker who can execute your order as quickly as possible. Why? This is because the fast moving market is another reason why your orders are sometimes not executed at the price you expected. A super fast order executing platform that moves at same pace with the ever-changing market is an advantage.