CFDs are complex instruments and come with a high risk of losing money rapidly due to leverage. 75% of retail investor accounts lose money when trading CFDs with this provider. You should consider whether you understand how CFDs work and whether you can afford to take the high risk of losing your money.
US English

What is forex?

Chapter 1: What is forex?

Of all the financial markets, forex is the biggest. Roughly $4 trillion is traded globally every working day. And in many ways it’s the easiest to get your head around.

‘Forex’ or ‘FX’ stands for ‘foreign exchange’. You sell the currency you are holding, let’s say Pounds Sterling, and buy another one, let’s say US Dollars.

And, just like when you buy your currency when you go abroad on holiday, the bank, post office or foreign exchange booth at the airport will quote two prices: one to sell you the US Dollars, and another to buy them from you and pay you Sterling.

The bulk of forex trading involves just three currencies – US Dollars, Euro and Japanese Yen. (For example, selling US Dollars to buy Euros, selling Euros to buy Yen and so on.) But of course forex trading can take place between any two of the many currencies used around the world.

Chapter 2: Why trade forex?

That depends. For some, it’s about getting hold of real money – as people may need to obtain a currency to buy goods or services. This could include manufactured goods or securities, such as stocks or bonds denominated in a foreign currency.

There’s also the investment opportunity. You could choose to buy a foreign currency because you may earn more interest on your money than in the currency you are holding.

And then there’s speculation. This is about selling your “base currency” and buying another in the hope that – when you sell it again – you’ll end up with more of the currency than you started with.

Chapter 3: Who trades forex?

The biggest buyers and sellers of forex are banks. Even though they may trade for their own book, they are mostly carrying out deals for customers (who may be looking to access money, invest or speculate). 

Although hundreds of banks and brokers trade forex, the market is dominated by the ‘big five’: Citigroup, Deutsche Bank, Barclays, JP Morgan and UBS. Together they accounted for over half the global market turnover in 2015.

Chapter 4: Jargon busting

Forex is an over-the-counter (OTC) market. This means that trading doesn’t happen on a stock exchange, but instead between counterparties directly or via a matching platform.

On trading screens and websites, you’ll see currencies are shown by short codes: for example, US Dollars is USD, Euro is EUR, Japanese Yen is JPY. ISO, the international standards organisation, lists 268 different currencies.

The majority of forex trading is known as ‘spot’. This means prices are quoted, deals are done and the proceeds paid to the appropriate bank account more or less immediately. 

However there are also forward foreign exchange contracts. This means the bank or broker will agree a rate with you today, for the currency that you wish to buy or sell at an agreed future date.

Chapter 5: How to trade in forex?

A bank or a broker will typically give you access to their online dealing platform. You can then link it to your bank account and start trading. There are also many specialist forex trading platforms that are designed for private individuals to trade.

Chapter 6: The good and the bad

One big advantage in trading forex (say, compared to shares) is that you will always have an asset. So if you sell USD and buy EUR, at the very least you will hold EUR. 

What’s more, while you’re holding the currency you bought, you could earn interest on it from the bank that’s holding it for you. And if your position pays off you may also make a profit when you sell those euros back to dollars.

The bad news is that exchange rates could go against you, and you lose money when you trade back into your base currency. You may also make no interest on the currency you own if interest rates are rock bottom.

Now you know…

1. The forex market has the biggest daily turnover of any financial market.
2. Most of the trading is between major currency pairs.
3. You could make a profit from buying and selling currencies.
4. You could also earn interest on the currency you hold – but whatever happens…
5. You will always hold an asset: the currency that you’ve bought.

Test yourself

Who are the biggest buyers and sellers of forex?

Investment funds
Previous lesson

What are indices?

Looking for more?

Education Hub

You’ll find everything you need to know here; from how-to guides to investment strategies.

Trading Guides

Our in-depth guides will provide you some insights into the wide variety of financial instruments, their unique features and how to use them in your trading portfolio.

Trading Glossary


That's the number of terms in our glossary.

Do you know your CFDs from your IPOs or ETFs? Remove the mystery with our definitions glossary.

See all

Term of the day


  Security  is a type of financial instrument that holds value and can be traded between two parties. We will look into the financial securities definition in more detail and give some security examples, too. Key takeaways...

Read more
The most common word

Closing Price

Looking for a closing price definition? The closing price is a security’s trading price at the end of a day’s business in a financial market. This makes it the most recent valuation of a security until the next trading session. Where...

Read more

Still looking for a broker you can trust?

Join the 610,000+ traders worldwide that chose to trade with

1. Create & verify your account 2. Make your first deposit 3. You’re all set. Start trading