What is a pip in forex trading?

Pip stands for "percentage in point" and is the smallest increment of trade in FX. In the FX market, prices are quoted to the fourth decimal point. For example, if a bar of soap in the drugstore was priced at $1.20, in the FX market the same bar of soap would be quoted at 1.2000. The change in that fourth decimal point is called 1 pip and is typically equal to 1/100th of 1%. Among the major currencies, the only exception to that rule is the Japanese yen. One Japanese yen is now worth approximately US$0.01; so, in the USD/JPY pair, the quotation is only taken out to two decimal points (i.e. to 1/100th of yen, as opposed to 1/1000th with other major currencies).