Exchange rates Because currencies are traded in pairs and exchanged one against the other when traded, the rate at which they are exchanged is called the exchange rate. The majority of the currencies are traded against the US dollar (USD). The four next-most traded currencies are the Euro (EUR), the Japanese yen (JPY), the British pound sterling (GBP) and the Swiss franc (CHF). These five currencies make up the majority of the market and are called the major currencies or "the Majors". Some sources also include the Australian dollar (AUD) within the group of major currencies.

At any given point, time and place, if an investor buys any currency and immediately sells it - and no change in the exchange rate has occurred - the investor will lose money. The reason for this is that the bid price, which represents how much will be received in the counter or quote currency when selling one unit of the base currency, is always lower than the ask price, which represents how much must be paid in the counter or quote currency when buying one unit of the base currency. For instance, the EUR/USD bid/ask currency rates at your bank may be 1.2015/1.3015, representing a spread of 1000 pips (also called points, one pip = 0.0001), which is very high in comparison to the bid/ask currency rates that online Forex investors commonly encounter, such as 1.2015/1.2020, with a spread of 5 pips. In general, smaller spreads are better for Forex investors since even they require a smaller movement in exchange rates in order to profit from a trade.

Margin
Banks and/or online trading providers need collateral to ensure that the investor can pay in case of a loss. The collateral is called the margin and is also known as minimum security in Forex markets. In practice, it is a deposit to the trader's account that is intended to cover any currency trading losses in the future.
Margin enables private investors to trade in markets that have high minimum units of trading by allowing traders to hold a much larger position than their account value. Margin trading also enhances the rate of profit, but can also enhance the rate of loss if the investor makes the wrong decision.

Leveraged financing
Leveraged financing, i.e., the use of credit, such as a trade purchased on a margin, is very common in Forex. The loan/leveraged in the margined account is collateralized by your initial deposit. This may result in being able to control USD 100,000 for as little as USD 1,000.
There are three ways private investors can trade in Forex directly or indirectly:

The spot market
Forwards and futures
Options

A spot transaction
A spot transaction is a straightforward exchange of one currency for another. The spot rate is the current market price, also called the benchmark price. Spot transactions do not require immediate settlement, or payment "on the spot." The settlement date, or "value date," is the second business day after the "deal date" (or "trade date") on which the transaction is agreed to by the two traders. The two-day period provides time to confirm the agreement and arrange the clearing and necessary debiting and crediting of bank accounts in various international locations.

Forwards and Futures
Forwards make up about 46% of currency trading. A forward transaction is an agreement between two parties whereby one party buys a currency at a particular price by a certain date that is greater than two business days (a spot transaction).
A future contract is a forward contract with fixed currency amounts and maturity dates. They are traded on future exchanges and not through the interbank foreign exchange market.

Options
A currency option is similar to a futures contract in that it involves a fixed currency transaction at some future date in time. However the buyer of the option is only purchasing the right but not the obligation to purchase a fixed amount of currency at a fixed price by a certain date in future. The price is known as the premium and is lost if the buyer does not exercise the option.

Risks
Although Forex trading can lead to very profitable results, there are risks involved: exchange rate risks, interest rate risks, credit risks, and country risks. Approximately 80% of all currency transactions last a period of seven days or less, while more than 40% last fewer than two days. Given the extremely short lifespan of the typical trade, technical indicators heavily influence entry, exit and order placement decisions.