A bid-ask spread is the amount by which the ask price surpasses the bid price for an asset in the market.
Essentially a spread is the difference between the ask price and the bid price. In other words, it is the cost of trading. For instance, if the Euro to US dollar is trading with an ask price of 1.12020 and a bid price of 1.12000, then the spread will be the ask minus the bid price, in this scenario, 0.0002. As a result the spread of 0.0002 equals one pip.
Spreads are calculated in the same way for yen-based currencies like USDJPY.
Equally if the yen to the US dollar is trading with an ask price of 121.72 and a bid price of 121.70, then the spread will be 0.02 (121.72 – 121.70). This equals 2 pips.
More on Beginner's Education
What is a Bid Price/What is an Ask Price?
The Bid price is the price a forex trader is willing to sell a currency pair for. Ask price is the price at which a trader will buy a currency pair. Both of these prices are given in real-time and are constantly updating. So for example, the British pound against the...
What are Base and Quote Currencies?
In forex, currencies are always traded in pairs. The first currency is called the base currency and the second currency is called the quote currency. For example, EURUSD, means that the base currency is the Euro and the quote currency is the US Dollar. The quote...