Recently, someone asked me what a contract for difference (CFD) is, and I realized that many beginners still have a lot of misconceptions about this investment tool. So today, I’ll talk about my understanding of CFDs.

Simply put, a CFD is an agreement between buyers and sellers. You don’t actually need to buy physical goods or stocks. Instead, you settle in cash and earn the difference based on whether the price goes up or down. For example, if you’re bullish on crude oil and expect it to rise, you can buy a CFD on crude oil; if you expect it to fall, you can sell. Whether the market goes up or down, there’s a chance to profit—that’s the advantage of two-way trading.

One feature of CFDs that I personally like a lot is the T+0 system. The contract you buy can be closed on the same day, so you don’t have to wait until the next day like you would with stocks. This makes it convenient for people who want to respond quickly to market changes. Also, CFDs support leveraged trading: by putting up only part of the margin, you can control a larger position. I used to trade U.S. stocks this way—using a small amount of capital to gain exposure to a larger market position.

However, leverage is a double-edged sword, so you need to be careful. According to statistics, as many as 70% of retail investors lose money, and leverage amplifies the risk of losses. Once the market moves against your expectations, losses can quickly exceed what you can tolerate. That’s why beginners should use leverage cautiously and do proper risk management.

When it comes to costs, the main expense of CFDs comes from the spread—that is, the difference between the buy and sell prices. If you hold a position overnight, you also need to consider overnight interest. But since most CFD trading is short-term speculation, if you close the position on the same day, you won’t incur that fee.

Nowadays, you can trade CFDs on many types of products. From traditional forex, commodities, and stocks, to cryptocurrencies like Bitcoin and Ethereum. The investment threshold is also low—around a dozen dollars is enough to start trading—which really attracts many people.

That said, when choosing a platform, you must be very cautious. I’ve seen too many “fake” promotions and so-called platforms that lack proper regulatory qualifications. Either they don’t disclose their regulatory status at all, or they apply for loosely regulated licenses. You should choose a platform with a legitimate financial regulatory license. For example, licenses issued by top regulators such as the UK’s FCA or Australia’s ASIC provide much more assurance.

When selecting a platform, besides regulatory licensing, you should also look at the company’s size, how long it has been established, the quality of customer service, and the level of spreads. Extremely low spreads can sometimes be a red flag—make sure you ask clearly about any hidden fees. Platforms that are too small or have been established for too short a time carry higher risks, because incidents like “running away with client funds” have indeed happened.

To sum up, CFDs themselves are not a scam, but there are definitely many unreliable traders in the market. CFD is a high-risk investment tool, suitable for people with some investment experience and a strong ability to tolerate risk. If you’re a beginner, it’s recommended that you first thoroughly understand how CFDs work, learn how to control your leverage ratio, and set stop-loss and take-profit levels—only then can you last longer in this market.

The biggest fear in investing is greed—taking one step at a time until you lose control. So whether you want to trade CFDs or other financial products, the “right mindset” and principles matter more than anything else.