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Foreign exchange trading

Page last updated: 4 Oct 2018

The risk of online foreign exchange (forex) trading is high. It’s even higher if you trade with borrowed money, as this increases any gains or losses you make. We regularly receive complaints and enquiries from consumers who have lost money in online forex trading.

Foreign exchange (forex) trading

What is foreign exchange (forex) trading

Forex trading is the buying and selling of foreign currencies. People trade in forex either to try to make a quick profit by betting on the changing value of a currency or to provide certainty about the cost of future foreign currency payments (called ‘hedging’).

You can trade in forex by

  • purchasing foreign money (that will need to be held in a foreign currency bank account) with the hope that the currency will increase in value against the NZ dollar
  • buying and selling contracts linked to the exchange rates between two currencies from a licensed derivatives issuer. These contracts could be called things like forwards, swaps, options, contracts for difference (CFDs), and margin FX contracts.

Understanding the risks

Forex trading for profit is very risky. For every person who gains a dollar from forex trading, someone else loses a dollar. And that's before taking into account costs and fees, which can be significant.

Because changes in foreign exchange rates are often influenced by unexpected events, even highly experienced traders using specialist tools often get it wrong.

If you do choose to trade forex, you will need plenty of spare money to cover losses caused when exchange rates move against you.

Read our forex trading example to help you understand how trading for a profit really works.

Things to look out for

Be wary of promotional offers for 'free' or 'no loss' trades

Especially from online platforms that may not be based in New Zealand. These often have strings attached, so examine their terms and conditions closely before committing.

Beware of forex trading ‘training’ and ‘tools’

You should be wary of anyone who tells you that a particular product or technique can give you access to better exchange rates or easy money. While software programmes and training courses can teach you how to make forex trades, no person or programme can ever accurately predict movement in foreign currencies.

Forex trading risk is hard to manage

Forex traders can use risk management techniques such as ‘stop-loss orders’ to try to limit trading losses. For example, if you agree to a stop loss order to automatically close your trade when the exchange rate reached AUD$0.90, in theory, this would cap the potential loss at NZ$1,800.

But it would not be guaranteed, as stop orders may not work at all when there are extreme movements in the markets. You might also have to pay additional fees or costs to have a stop loss order in place.

Borrowing to trade is extremely risky

‘Leverage’ or ‘margin’ trading are terms used to describe ways of trading with borrowed money. This can be riskier than borrowing to place a bet. You may pay only a small portion of the value of your trade up-front, but if you lose you will need to repay the full amount borrowed, plus any amount you’ve lost.

This means that even small movements in currency values can have a big impact on any gains or losses you make through forex trading.

How to reduce risk

  • If you do want to trade, you should talk to an authorised financial adviser with expertise in this area before deciding to start. Ask them whether it is a sensible strategy for you, and ask for guidance on the level of loss you can afford.
  • Use a licensed provider. Forex trading using contracts linked to the exchange rate between two currencies is classed as trading a ‘derivative’ financial product. In New Zealand, individuals or businesses offering these contracts must hold a ‘derivatives issuer licence’ from us. 
  • See our list of all licensed providers.
  • We recommend New Zealanders avoid overseas forex trading services not licensed by us, even if they appear to be regulated by an overseas authority.
  • Visit our warnings and alerts page for warnings about forex dealers.
  • Read the product disclosure statement. Licensed derivatives providers must give you a product disclosure statement (PDS) before you trade with them. Different types of forex trading products involve different risks, so you should read the PDS carefully.

In particular, you should look for information on:

  • how the particular product you’re looking at works. If you don’t fully understand it, give it a miss
  • 'counterparty risk’ – the risk that the forex provider won't be able to fulfil its obligations to you if something goes wrong. For example, if your provider became insolvent, you may be an unsecured creditor and have difficulty getting your money back
  • how they handle market risks such as lack of liquidity in the market, and trading delays. You may not be able to make trades when you'd like to
  • fees and other charges
  • information about leverage.


How David lost $4,545 on a $1,000 trade

forex trading

David wanted to make money from forex trading, so he found an online margin forex trading service, checked that it was a licensed derivatives issuer in New Zealand, and deposited NZ$1,000 to open an account.

He ended up losing not only the $1,000 but an extra $3,545. How?

The account required a 0.5% margin to trade. This means that for every dollar he had in his account, he could buy a trade worth $200. This can also be described as a ‘leverage’ of 200 times.

David thought the NZ dollar (NZD) would increase in value compared to the Australian dollar (AUD), so he purchased a contract linked to NZ$100,000 with the NZD/AUD currency pair at 0.92 (meaning NZ$1 dollar = AUD$0.92).

For this NZ$100,000 trade, David had to pay only 0.5% upfront (the margin), which was NZ$500. This came from the money he had deposited in his account.

Unfortunately, the NZD decreased against the AUD. In a very short period, the exchange rate dropped to 0.88 (NZ$1 dollar = AUD$0.88). This meant the value of David’s NZ$100,000 trade fell by NZ$4,545.

This was more than the initial ‘margin’ of $500 that David had paid, so the forex trading service deducted the remaining $500 that David still had in his account and asked him to pay an additional NZ$4,000 of margin – the $3,545 he owed plus a buffer against further losses. This is called a ‘margin call’.

David didn’t want to continue taking risk on the exchange rates, so he chose to close the transaction at the exchange rate of 0.88. He still had to pay the forex trading service NZ$3,545 in addition to the NZ$1,000 that he had originally paid to open the account.

Find this difficult to follow? Keep in mind that a basic rule of investing is never to take part if you don’t fully understand how an investment works.

TIP: Complexity usually means risk.