Recently, I was chatting with a few friends and found that many people still have misconceptions about buying foreign exchange. In fact, foreign currency investment is not as complicated as it seems, but it does require understanding a few core concepts to avoid pitfalls.

First, let's talk about why you should buy foreign exchange. Taiwan has long been in a low-interest-rate environment, with fixed deposit rates around 1.7%. However, currencies like the US dollar and Australian dollar have noticeably higher interest rates. The interest rate differential alone is enough to attract many people. But there's a trap to watch out for: many only see the interest income and ignore the risks of exchange rate fluctuations. I've seen cases where someone earned 5% interest on US dollars, only to lose 8% due to currency depreciation, ending up with a loss. So, when buying foreign exchange, you must consider both the interest rate differential and the exchange rate difference.

Regarding investment methods, Taiwan mainly has three types. The first is foreign currency fixed deposits, which is the most conservative approach—simply exchanging Taiwan dollars for foreign currency and depositing it in a bank, earning interest annually. The advantage is low risk; the downside is poor liquidity, as early withdrawal may incur interest penalties. The second is foreign currency funds, which don't require lock-in periods and can be bought or sold at any time, with returns between savings accounts and fixed deposits. The third is forex margin trading, which uses leverage to amplify gains but also carries the highest risk, typically with leverage between 50 to 200 times.

I personally think beginners should start with foreign currency funds. Compared to fixed deposits, they offer more flexibility, and compared to margin trading, they are more controllable in terms of risk. When buying foreign exchange, consider mainstream currencies like USD, AUD, and JPY. The US dollar is the global settlement currency with the best liquidity. The Australian dollar is highly correlated with commodity prices, making its trend relatively easier to grasp. The Japanese yen is a safe-haven currency, with political and economic stability.

Looking back at the market over the past year or so, the Federal Reserve started cutting interest rates from late 2024, and by mid-last year, several rate cuts had already occurred. This directly affected the trends of major currencies. The euro appreciated significantly due to the European Central Bank's relatively independent policy. The yen had some upward momentum because the Bank of Japan delayed rate cuts. The British pound remained relatively weak, mainly due to sluggish economic growth in the UK. The Swiss franc performed well during market turbulence because of its strong safe-haven attribute.

If you want to buy foreign exchange, the most important thing is to understand the reasons behind exchange rate fluctuations. Inflation rates, interest rates, government debt, trade conditions, political stability—all these factors influence exchange rates. For example, if a country has low inflation and slow price increases for goods and services, its currency usually appreciates. Conversely, countries with high inflation tend to see their currencies depreciate.

In practical terms, my advice is to first choose your target currencies carefully. Understand the policy environment, interest rate levels, export products, and other factors for the two currencies you plan to trade. Then, develop a trading plan based on your risk tolerance. It's especially important to set stop-loss points to prevent losses from spiraling out of control. I've seen too many people blow up their accounts because they lacked discipline.

Also, a reminder: don't trade currencies you don't understand. The forex market has many currencies, but the most traded are USD, EUR, and JPY. Beginners should start with familiar currency pairs. Keep a close eye on international news, central bank policy releases, and economic data, as these can immediately impact exchange rates.

Diversification is also crucial. You can hold both USD fixed deposits and AUD funds, or combine other asset classes to effectively hedge risks. Buying foreign exchange is not a get-rich-quick game; it requires long-term patience and discipline. The best way to practice is to use a demo account to test your trading strategies first, and only move to real funds once you're confident.