More and more people have been paying attention to foreign currency investments, mainly because the interest rates on fixed deposits in TWD are just too low. When you look at the interest rates of foreign currencies like the US dollar and the Australian dollar, it really is tempting. But many beginners actually don’t quite understand how to truly make money through foreign currencies. Today, let’s talk about this topic.

When it comes to foreign currency investment, the core is really two concepts: interest rate differential and exchange rate differential. The interest rate differential is easy to understand—it’s the difference in interest rates between different countries. For example, if the fixed deposit interest rate in the US is higher than in Taiwan, you convert TWD into US dollars and deposit them, and you can earn that interest rate differential. But there’s a catch—you may earn interest, yet lose out on the exchange rate differential because of fluctuations in exchange rates. So truly knowledgeable investors consider both factors at the same time, instead of focusing only on interest rates.

At present, Taiwanese banks generally offer 12 foreign currency options. Common ones include US dollars, Japanese yen, Australian dollars, Canadian dollars, British pounds, and more. Each currency has its own characteristics. The US dollar and the euro are policy currencies—the exchange rate is mainly affected by central bank policy. The Japanese yen and the Swiss franc are safe-haven currencies, which are relatively stable. The Australian dollar and the Canadian dollar are commodity currencies, closely tied to the prices of major commodities. For beginners, I’d recommend starting with the US dollar or Australian dollar, because they have high trading volume and transparent information, making them easier to manage.

As for how to profit from exchange rates, there are three main ways. The first is foreign currency fixed deposits—the simplest and most conservative option. You simply deposit your money in the bank to earn interest, which is suitable for completely new investors. The downside is poor liquidity. If the exchange rate reaches your target but the fixed deposit hasn’t matured yet, terminating early will result in an interest penalty, which isn’t worth it.

The second is foreign currency funds, which offer greater flexibility. You can buy and sell them at any time, and the interest rates are typically between those of passbook savings and fixed deposits. You can invest using TWD directly, and the fund company handles the currency exchange on your behalf. With this approach, you can earn both interest and exchange rate differentials. This method is more suitable for people who want flexibility but don’t want to take on too much risk.

The third is foreign exchange margin trading. This is the real way to make big money from exchange rate fluctuations, but it also carries the highest risk. It uses leverage to amplify your capital—sometimes 50x, 100x, or even higher. The advantage is 24-hour trading, a T+0 mechanism, a low entry barrier, and the ability to operate with only a small amount of margin. The downside is that if your judgment is wrong, losses can be magnified as well, potentially leading to liquidation. Therefore, this method is only suitable for investors with some experience who can bear the risks.

If you truly want to profit from exchange rate differentials through foreign exchange margin trading, there are a few key points to keep in mind. First is choosing the underlying market. You need to deeply understand the economic factors behind the currency pair you want to trade. For example, if you expect the US dollar to appreciate, you should pay attention to US economic data and central bank policies. If you expect the Australian dollar to perform well, you should track the price trend of iron ore, because Australia’s main exports are major commodities.

Second is setting up a trading strategy. Don’t trade based on instincts. Based on your risk tolerance and market conditions, set your entry point, stop-loss point, and take-profit point in advance. Many people lose money because they lack discipline—after making a little profit, they want to make more, and after making a little loss, they want to break even. The smartest approach is to wait for a trend to form before entering, rather than chasing highs or selling lows.

Another very important point is mindset. The foreign currency market fluctuates frequently and is influenced by all kinds of factors such as global politics, the economy, and news. You need to monitor international developments at all times, but at the same time, stay rational and don’t let market sentiment control you. I recommend that beginners first practice with a demo account, test your strategy in a real market environment, and then evaluate how it performs before using real funds.

Lastly, my recommendation is to diversify your allocation. Don’t put all your money into a single currency. You can hold a mix such as TWD fixed deposits and an Australian dollar fund, or use margin trading to take advantage of short-term volatility. This way, you can participate in market opportunities while controlling risk.

Foreign currency investment may seem complicated, but the core is to understand how exchange rates generate profits, where the risks lie, and what your goals are. Choose an investment method that fits you, develop a strategy, and combine that with continuous learning and practice—you can then find opportunities that are right for you in the foreign currency market. The focus isn’t on getting rich overnight, but on steadily accumulating wealth, turning exchange rate fluctuations into a source of your returns.