Exchange Rate

The value of one currency expressed in terms of another. For example, if EUR/USD is 1.3200, 1 Euro is worth US$1.3200.

Pip

The smallest increment of price movement a currency can make. Also called point or points. For example, 1 pip for the EUR/USD = 0.0001 and 1 pip for the USD/JPY = 0.01.

Lot

A lot references the smallest available trade size that you can place when trading currency pairs on the forex market. Typically, brokers will refer to lots by increments of 1,000, or a micro lot. It is important to note that the lot size directly impacts and indicates the amount of risk you're taking.

Leverage

Leverage is the ability to gear your account into a position greater than your total account margin. For instance, if a trader has $1,000 of margin in his account and he opens a $100,000 position, he leverages his account by 100 times, or 100:1. If he opens a $200,000 position with $1,000 of margin in his account, his leverage is 200 times, or 200:1. Increasing your leverage magnifies both gains and losses.

To calculate the leverage used, divide the total value of your open positions by the total margin balance in your account. For example, if you have $10,000 of margin in your account and you open one standard lot of USD/JPY (100,000 units of the base currency) for $100,000, your leverage ratio is 10:1 ($100,000 / $10,000). If you open one standard lot of EUR/USD for $150,000 (100,000 x EURUSD 1.5000) your leverage ratio is 15:1 ($150,000 / $10,000).

Margin

The deposit required to open or maintain a position. Margin can be either “free” or “used”. Used margin is that amount which is being used to maintain an open position, whereas free margin is the amount available to open new positions. With a $1,000 margin balance in your account and a 1% margin requirement to open a position, you can buy or sell a position worth up to a notional $100,000. This allows a trader to leverage his account by up to 100 times or a leverage ratio of 100:1.

If a trader’s account falls below the minimum amount required to maintain an open position, he will receive a “margin call” requiring him to either add more money into his or her account or to close the open position. Most brokers will automatically close a trade when the margin balance falls below the amount required to keep it open. The amount required to maintain an open position is dependent on the broker and could be 50% of the original margin required to open the trade.

Spread

The difference between the sell quote and the buy quote or the bid and offer price. For example, if EUR/USD quotes read 1.3200/03, the spread is the difference between 1.3200 and 1.3203, or 3 pips. In order to break even on a trade, a position must move in the direction of the trade by an amount equal to the spread.

Cross rate

The currency exchange rate between two currencies, both of which are not the official currencies of the country in which the exchange rate quote is given in. This phrase is also sometimes used to refer to currency quotes which do not involve the U.S. dollar, regardless of which country the quote is provided in.

For example, if an exchange rate between the British pound and the Japanese yen was quoted in an American newspaper, this would be considered a cross rate in this context, because neither the pound or the yen is the standard currency of the U.S. However, if the exchange rate between the pound and the U.S. dollar were quoted in that same newspaper, it would not be considered a cross rate because the quote involves the U.S. official currency.