Instant execution VS Market execution

Instant execution

Instant execution means that when you click the button to place your trade, your online Forex broker will immediately fill your trade at the current market price. If it cannot be filled, then a requote will be issued with the new price, and you will have the opportunity to either place the trade at the new price or not to trade. With this option, traders can set “Stop Losses” and “Take Profit” orders before execution.

Market execution

In contrast, if your broker uses market execution, when you click the button to place your trade, it goes to the open market, where it is then filled at the next available price. With market execution, there is a delay before the trade is placed, and then it is filled. This type of execution implies that you may pay a different price than the price you saw when you clicked the button to place the trade. It may go up or it may go down.