Forex trading is the buying and selling of currencies on a global market where one currency is exchanged for another. It’s the largest financial market in the world, operating nearly around the clock from Sunday evening to Friday evening. Traders aim to profit from changes in exchange rates between currency pairs, such as the euro against the U.S. dollar. While the market was once dominated by banks and large institutions, retail investors now participate through online brokers, though the risks, particularly from leverage, are substantial.
How Currency Pairs Work
Every forex trade involves two currencies. The first currency listed is the “base” currency, and the second is the “quote” currency. If you see EUR/USD priced at 1.0850, that means one euro costs 1.0850 U.S. dollars. When you buy EUR/USD, you’re buying euros and selling dollars. If the price rises to 1.0900, the euro has strengthened against the dollar, and your trade is profitable.
The most heavily traded pairs involve major global currencies: the U.S. dollar, euro, Japanese yen, British pound, Australian dollar, Canadian dollar, and Swiss franc. Pairs that include the U.S. dollar on one side are called “majors” and tend to have the tightest trading costs. Pairs that exclude the dollar entirely, like EUR/GBP, are called “crosses” and typically carry slightly higher costs.
What Pips Are and Why They Matter
Price movements in forex are measured in pips. A pip is one unit in the fourth decimal place of most currency pairs, or 0.0001. If EUR/USD moves from 1.0850 to 1.0855, that’s a five-pip move. The dollar value of a pip depends on how large your position is. On a standard lot of 100,000 units, one pip in EUR/USD equals roughly $10. On a smaller “mini lot” of 10,000 units, one pip equals about $1.
Understanding pips helps you calculate potential gains and losses before you place a trade. If you’re trading 10,000 euros of EUR/USD and the price moves 30 pips in your favor, that’s about $30. The same 30-pip move against you costs $30. Pips give you a universal way to compare movements across different currency pairs and position sizes.
When the Market Is Open
The forex market operates from 5:00 p.m. Eastern Time on Sunday to 5:00 p.m. ET on Friday, running continuously through four overlapping regional sessions. Trading opens with the Sydney session, followed by Tokyo, then London, and finally New York. As one region’s trading day ends, another is already underway, which is why the market never truly closes during the business week.
Not all hours are equal. The busiest periods, with the most trading volume and tightest spreads, occur when sessions overlap. The London-New York overlap (roughly 8:00 a.m. to noon ET) is typically the most active window for pairs involving the dollar or euro. If you trade during quieter hours, like the gap between the New York close and Sydney open, you may see wider spreads and choppier price action.
Who Participates in the Market
The forex market includes commercial banks, central banks, investment management firms, hedge funds, multinational corporations, retail brokers, and individual investors. Banks handle the largest share of volume, both for their own trading and on behalf of clients. Corporations use the market to convert revenue earned in foreign currencies or to hedge against exchange rate risk on future transactions. Central banks occasionally intervene to stabilize or influence the value of their national currency.
Retail traders, meaning individuals trading through an online broker, represent a small fraction of overall volume but have grown significantly over the past two decades. Online platforms now let you open an account with a few hundred dollars and access the same currency pairs that institutional players trade.
Leverage and Margin
Leverage is the defining feature of retail forex trading, and the primary reason it carries so much risk. Leverage lets you control a large position with a relatively small deposit, called margin. If your broker requires 1% margin, you can control $100,000 worth of currency with just $1,000 in your account. That’s a leverage ratio of 100:1.
Higher leverage amplifies both gains and losses. With 100:1 leverage, a 1% move in your favor doubles your $1,000 deposit. But a 1% move against you wipes it out entirely. You can lose more money than your original investment. Common leverage ratios range from 50:1 (requiring 2% margin) to 200:1 (requiring 0.5% margin), depending on the broker and the regulatory environment.
If your account balance drops below the required margin level, the broker issues a margin call, requiring you to deposit more funds or close positions. Many brokers will automatically close your trades if your balance falls far enough, locking in losses before the account goes negative. This automatic liquidation can happen quickly during volatile markets, sometimes at prices worse than expected.
Costs of Trading
The primary cost in forex is the spread, which is the difference between the price you can buy at (the “ask”) and the price you can sell at (the “bid”). If EUR/USD has a bid of 1.0850 and an ask of 1.0852, the spread is two pips. You start every trade slightly in the red by the width of the spread, and the price needs to move in your favor by at least that amount before you break even. Spreads on major pairs can be very tight during active market hours and wider during quiet periods or on less popular pairs.
Some brokers charge a separate commission per trade instead of, or in addition to, the spread. This is common with accounts marketed as “raw spread” or “ECN” accounts, where the spread is minimal but you pay a fixed fee per lot traded.
A third cost catches many beginners off guard: the overnight swap. If you hold a position past 5:00 p.m. ET, you either pay or receive a small fee based on the interest rate difference between the two currencies in your pair. If you’re long a currency with a higher interest rate than the one you’re short, you may earn a small credit. The reverse costs you money. On Wednesdays, most brokers charge triple the normal swap to account for the weekend settlement gap, since currency trades typically settle two business days later.
How Brokers Are Regulated
Forex brokers operate under the oversight of financial regulators, but the rules vary significantly by country. In the United States, the Commodity Futures Trading Commission (CFTC) oversees forex brokers and imposes strict leverage limits for retail accounts, capping leverage at 50:1 on major pairs. The Financial Conduct Authority (FCA) in the United Kingdom and the Australian Securities and Investments Commission (ASIC) in Australia are also considered strong regulatory bodies with meaningful consumer protections.
Regulation matters because it determines whether your broker must segregate client funds from its own operating money, how much leverage you’re allowed, and what recourse you have if something goes wrong. Brokers registered in lightly regulated jurisdictions may offer leverage of 500:1 or higher, which sounds attractive but dramatically increases the chance of rapid, total losses. Before opening an account, verify that your broker is registered with a reputable regulator in its home country.
What a Typical Forex Trade Looks Like
Say you believe the euro will strengthen against the dollar. You open a buy position on EUR/USD at 1.0850, trading one mini lot (10,000 units). Your broker requires 2% margin, so $217 of your account is set aside to hold the position. The spread is 1.5 pips, meaning you start about $1.50 in the red.
Over the next few hours, the price rises to 1.0890, a gain of 40 pips. At $1 per pip on a mini lot, that’s a $40 profit. You close the trade, and the $217 margin is released back to your account along with the $40 gain. If the price had dropped 40 pips instead, you’d have lost $40. With higher leverage or a larger position size, those same 40 pips could mean hundreds or thousands of dollars in either direction.
Most retail forex traders lose money. The combination of leverage, transaction costs, and the difficulty of consistently predicting short-term currency movements makes profitable trading genuinely hard. If you’re considering forex trading, start with a demo account to learn the mechanics without risking real money, and only trade with funds you can afford to lose.