The foreign exchange market—commonly known as forex or FX—is the largest and most liquid financial market in the world. This guide traces the history of forex trade from its origins through the modern electronic era, explains what forex means in practical terms, explores real-world use cases, sets out evaluation criteria for participants, and examines the risks that all users should understand. Written for an educational audience, this article draws on authoritative sources including the Bank for International Settlements (BIS), the Commodity Futures Trading Commission (CFTC), the National Futures Association (NFA), and the Financial Industry Regulatory Authority (FINRA).
Forex—short for foreign exchange—refers to the global, decentralised market where currencies are bought, sold, and exchanged. Unlike stock exchanges that operate from a single physical location, the forex market is an over-the-counter (OTC) market that runs 24 hours a day, five days a week, across major financial centres including London, New York, Tokyo, Singapore, and Hong Kong.
At its core, forex trading involves the simultaneous buying of one currency and selling of another. Currencies are quoted in pairs—for example, EUR/USD (euro against the US dollar) or USD/JPY (US dollar against the Japanese yen). The price of a currency pair reflects how much of the quote currency is needed to purchase one unit of the base currency.
The BIS Triennial Central Bank Survey, the most comprehensive source of information on the size and structure of global OTC markets, defines foreign exchange turnover as the gross value of all transactions in FX instruments—including spot, forwards, FX swaps, currency swaps, and options—reported by sales desks of reporting dealers.[reference:0]
The scale of the forex market is staggering. According to the BIS Triennial Survey, global FX trading reached $7.5 trillion per day in April 2022, up 14% from 2019.[reference:1][reference:2] Preliminary data for April 2025 indicate that daily turnover has continued to grow, with some estimates placing global FX turnover at around $9.5 trillion per day.[reference:3] The US dollar remains the dominant currency, being on one side of 88% of all FX trades—a position it has held consistently for over a decade.[reference:4][reference:5]
The history of forex trade is, in many ways, the history of international monetary systems. To understand today's forex market, it helps to trace its evolution through several distinct eras.
The modern history of forex trade begins with the gold standard, which emerged in the 19th century as the dominant international monetary system. Under the gold standard, countries pegged their currencies to a fixed quantity of gold. Central banks stood ready to buy and sell gold in exchange for paper money at fixed mint prices, and the export and import of gold were unrestricted.[reference:6] This created a system of effectively fixed exchange rates, as the value of each currency was defined in terms of gold.
The gold standard provided stability for international trade but was rigid and prone to deflationary pressures. It collapsed with the outbreak of the First World War, as countries suspended gold convertibility to finance military spending.
In July 1944, representatives of 44 nations met at Bretton Woods, New Hampshire, to design a new post-war international monetary system.[reference:7][reference:8] The Bretton Woods system fixed the US dollar to gold at US$35 per ounce, while all other currencies had fixed but adjustable exchange rates to the dollar.[reference:9][reference:10] Unlike the classical gold standard, capital controls were permitted to enable governments to stimulate their economies without suffering financial market penalties.[reference:11]
During the Bretton Woods era, the world economy grew rapidly, and recessions were generally minor.[reference:12] However, by the 1960s, strains began to show. A chronic US trade deficit drained US gold reserves, and persistent global inflation made the official gold price too low in real terms.[reference:13] Speculation against the dollar intensified.[reference:14]
In August 1971, President Nixon announced that the US would end on-demand convertibility of the dollar into gold for other central banks.[reference:15] The Bretton Woods system collapsed, and major currencies began to float against one another. This marked the birth of the modern floating-exchange-rate era.
After the collapse of Bretton Woods, the world's major economies adopted floating exchange rates. The US dollar's real broad trade-weighted exchange value started slightly above 105 in early 1973 and gradually declined over the next five years to around 84 in October 1978.[reference:16][reference:17] The 1970s and 1980s saw growing foreign exchange volatility, which in turn increased demand for currency hedging and speculative trading.
Daily turnover in the forex market soared from below US$100 billion in the 1970s.[reference:18] By 1992, average daily net turnover had reached approximately $800 billion, and by 1995 it was nearly $1.2 trillion.[reference:19]
The early 1990s brought a technological revolution: the first generation of electronic FX trading venues emerged in the interbank market with the launch of Reuters and EBS (Electronic Broking Services) platforms.[reference:20] These platforms began to replace the traditional voice-broker model.[reference:21] In 1996, State Street launched FX Connect, widely recognised as the first single-dealer platform, replacing voice trading with customers.[reference:22]
The 2000s saw the rise of retail forex trading—individual investors trading currencies through online platforms. Multi-dealer platforms such as FXall, Currenex, and Hotspot FX became major trading venues.[reference:23] The growth of internet connectivity, low-cost trading platforms, and high leverage made forex accessible to a broad retail audience.
The BIS Triennial Survey has tracked this growth meticulously. The survey, conducted every three years since 1986, involves central banks and other authorities in 52 jurisdictions collecting data from more than 1,200 banks and dealers.[reference:24][reference:25] The 2022 survey recorded $7.5 trillion in average daily turnover.[reference:26] The 2025 survey, with preliminary results released in September 2025, shows continued expansion.[reference:27]
Daily FX turnover has soared from below US$100 billion in the 1970s to approximately US$9.5 trillion in 2025.[reference:28] This extraordinary growth reflects the increasing importance of currency markets in global finance, trade, and investment.
Forex is not a single-purpose market. It serves a diverse range of participants, each with different objectives. Understanding these use cases is essential to grasping the full scope of the forex market.
Businesses that import or export goods and services use forex to convert payments from one currency to another. A European company selling products in the United States, for example, needs to convert US dollar revenues into euros. This is the most fundamental use case for forex.
Multinational corporations, investment funds, and institutional investors use forex derivatives—forwards, swaps, and options—to protect against adverse exchange rate movements. Hedging allows them to lock in future exchange rates and reduce uncertainty in their cash flows.
Speculators trade currencies with the aim of profiting from exchange rate fluctuations. This includes hedge funds, proprietary trading desks, and retail traders. Speculative activity accounts for a significant portion of daily forex turnover.
Central banks participate in forex markets to manage foreign exchange reserves, influence exchange rates, and implement monetary policy. They may intervene directly in the market to stabilise their currency or to address macroeconomic imbalances.
According to the BIS, the US dollar was on one side of 88% of all FX trades in April 2022.[reference:29] The euro remained the second most actively traded currency, while the renminbi's share rose to 7%, making it the fifth most traded currency in 2022—up from eighth place in 2019.[reference:30]
Whether you are a corporate treasurer, an institutional investor, or an individual considering retail forex trading, evaluation is critical. The following criteria provide a framework for assessing forex-related opportunities and service providers.
Registration matters. In the United States, the CFTC is the federal agency with primary responsibility for overseeing commodities markets, including foreign currency trading.[reference:31] The CFTC advises the public to thoroughly research OTC forex dealers before making deposits or handing over sensitive personal information.[reference:32]
Registration with the CFTC and NFA indicates that:
The NFA's BASIC (Background Affiliation Status Information Center) is a free online search tool that investors can use to research the background of derivatives industry professionals and firms.[reference:34][reference:35] By conducting due diligence in advance, investors can avoid dealings with unregistered entities and potential bad actors.[reference:36]
Reputable forex dealers maintain robust capital positions and are subject to ongoing financial reporting requirements. Retail customers should review a firm's financial disclosures and ensure that the dealer segregates customer funds from its own operating accounts.
Forex dealers earn revenue through spreads (the difference between bid and ask prices) and, in some cases, through commissions or fees. Traders should compare spread structures across multiple dealers and assess execution quality—whether trades are filled at the displayed prices without slippage.
In OTC forex trading, dealers control the information customers see on trading platforms, including prices and account balances.[reference:37] This creates a potential conflict of interest. Traders should evaluate whether the platform provides transparent, real-time pricing and whether the dealer has a clear policy on price manipulation and trade execution.
The CFTC and NASAA warn that off-exchange forex trading by retail investors is at best extremely risky, and at worst, outright fraud.[reference:38] Fraudulent dealers commonly use tactics including soliciting customers on social media, requiring payment in bitcoin or other digital assets, manipulating currency prices, offering unusually high leverage, and refusing customer withdrawals.[reference:39]
The following table compares the main forex use cases across five evaluation dimensions. This can help you determine which type of forex participation best aligns with your objectives and risk tolerance.
| Use Case | Primary Objective | Typical Participants | Risk Level | Time Horizon | Regulatory Oversight |
|---|---|---|---|---|---|
| International Trade | Currency conversion for payments | Importers, exporters, corporates | Low to moderate | Short to medium term | Banking regulations |
| Hedging | Risk mitigation | Corporations, funds, institutions | Moderate (if hedged) | Variable | CFTC, NFA, FINRA, international regulators |
| Institutional Speculation | Profit from price movements | Hedge funds, banks, prop desks | High | Intraday to long term | CFTC, NFA, international regulators |
| Retail Trading | Profit from price movements | Individual investors | Very high | Intraday to medium term | CFTC, NFA, FINRA (for broker-dealers) |
| Central Bank Operations | Monetary policy, reserve management | Central banks | Low (systemic) | Long term | Self-regulated / governmental |
This table is intended as a general guide only. Actual risk levels and regulatory requirements vary by jurisdiction, broker, and specific transaction structure. Always verify current rules with the relevant authority.
Before engaging in any forex-related activity—whether as a corporate user, an institutional investor, or a retail trader—work through this checklist.
The CFTC also encourages potential investors to research an OTC forex dealer before making any deposits or sharing personal information, and to be aware of common signs of fraudulent OTC forex websites.[reference:44]
Scenario: A Small Exporter Hedges Currency Risk
A US-based manufacturer, Precision Parts Inc., exports machinery to Europe. It has signed a contract to deliver €500,000 worth of equipment in six months, with payment due in euros upon delivery. The current EUR/USD exchange rate is 1.10, meaning the contract is worth approximately $550,000.
However, the company is concerned that the euro might weaken against the dollar over the next six months. If EUR/USD falls to 1.05, the company would receive only $525,000—a loss of $25,000 compared to today's rate.
To protect itself, Precision Parts Inc. enters into a six-month forward contract with its bank to sell €500,000 at a forward rate of 1.09. This locks in a guaranteed dollar value of $545,000. If the euro weakens, the company is protected. If the euro strengthens, the company forgoes the opportunity for additional profit—but it has eliminated the downside risk.
Key takeaway: Forex hedging is a practical risk-management tool for businesses with cross-border exposures. It is not about speculation; it is about certainty.
This is one of the most dangerous myths. The CFTC and NASAA warn that forex scams often tout high returns coupled with low risks—offers that sound too good to be true.[reference:45] In reality, forex trading carries significant risk, and most retail traders lose money.
Leverage amplifies both gains and losses. A 50:1 leverage ratio means that a 2% adverse move can wipe out your entire account. Many fraudulent dealers offer unusually high leverage to attract customers.[reference:46]
Not all dealers are created equal. Registration with the CFTC and NFA is not universal, and many offshore dealers operate outside US regulatory oversight. The CFTC has seen a growing number of complaints from customers who deposited money with unregistered offshore forex dealers and later were unable to withdraw their principal or earnings.[reference:47]
Retail OTC forex is not traded on a regulated exchange like a stock or futures exchange. In OTC forex, you trade directly against your dealer, and the dealer controls the prices and information you see.[reference:48] This is a fundamental structural difference that many retail traders do not fully appreciate.
Fraudulent dealers often refuse or ignore customer withdrawal requests.[reference:49] Even with legitimate dealers, losses can accrue rapidly, and there is no guarantee of recovering your principal.
FINRA also notes that the retail OTC forex market is opaque, volatile, and risky.[reference:50] Broker-dealers engaged in forex business with retail customers must comply with applicable FINRA rules.[reference:51]
Forex trading carries substantial risk and is not suitable for all investors. The CFTC and NASAA warn that off-exchange forex trading by retail investors is at best extremely risky, and at worst, outright fraud.[reference:52] Losses can accrue very rapidly, wiping out an investor's down payment in short order.[reference:53]
Leverage is the most significant risk factor in retail forex. While leverage can magnify profits, it equally magnifies losses. A small adverse movement in exchange rates can result in a margin call, requiring you to deposit additional funds or face forced liquidation of your positions.
In OTC forex, you are trading against your dealer. If the dealer becomes insolvent or engages in fraudulent practices, you may lose your entire investment. This is why verifying registration and disciplinary history is essential.[reference:54]
Forex fraud is a persistent problem. The CFTC has brought numerous enforcement actions against fraudulent forex operators. In one case, the CFTC obtained a monetary judgment of more than $22.6 million in connection with a fraudulent forex scheme.[reference:55] Fraudsters commonly use social media to solicit customers, require payment in digital assets, manipulate prices, and refuse withdrawals.[reference:56]
The CFTC offers a range of customer protection Fraud Advisories that provide warning signs of fraud, including the Foreign Currency (Forex) Trading Fraud Advisory.[reference:57][reference:58]
Exchange rates are influenced by a complex mix of economic data, interest rate differentials, geopolitical events, and market sentiment. These factors can produce sudden and sharp price movements that are difficult to predict.
Trading platforms can experience outages, latency, or price distortions. In OTC forex, the dealer controls the platform and the information displayed, creating a potential for conflicts of interest.[reference:59]
For more information on forex risks and fraud prevention, consult:
Always verify current rules, fees, spreads, rates, broker availability, and platform terms with the relevant authority or provider. This article does not provide personalised financial, legal, or tax advice.