What forex actually is (and isn't)

The market itself

Foreign exchange is the business of pricing one currency against another. There is no building and no opening bell — it is a network of banks, brokers and funds quoting each other prices, running from Sunday evening to Friday evening across the Sydney, Tokyo, London and New York sessions.

It is genuinely enormous. The Bank for International Settlements surveys the market every three years, and its 2025 survey put average daily turnover at $9.6 trillion in April 2025. That figure gets quoted at you a lot, usually as a reason to be excited. It is worth being precise about what it means for you: it means the market is deep and your order will fill. It does not mean there is more money available to you, and it says nothing about your odds. Nearly all of that volume is banks and institutions moving money for reasons that have nothing to do with speculation — importers paying for goods, funds hedging currency exposure, central banks managing reserves.

What you are actually trading

This is the part most introductions skip, and it changes everything about how you should think about risk.

When a retail trader in the UK, EU or Australia "buys EUR/USD", they are almost never buying euros. They are opening a contract for difference (CFD) with their broker: an agreement to exchange the difference in the pair's price between opening and closing the position. No currency changes hands. Your counterparty is the broker, not the market.

That has two consequences worth sitting with. Your broker's solvency and regulation matter as much as your analysis does — which is why every broker page on this site leads with who regulates them. And because a CFD is a leveraged product, the size of the position you control has very little to do with the money in your account.

Leverage, with the arithmetic shown

Leverage is the mechanism that makes small accounts feel powerful and empties them quickly. Regulators cap it precisely because of that.

Under FCA rules, a retail client trading a major currency pair must put up at least 3.33% of the position's value as margin — that is 30:1 leverage. Other assets are capped harder: 5% (20:1) for minor pairs, major stock indices and gold; 10% for other commodities; 20% (5:1) for individual shares.

Put numbers on the 30:1 case:

• You have £1,000 in your account.
• At 3.33% margin, that supports a position of about £30,000.
• EUR/USD moves 1% against you — an ordinary day, not a crisis.
• 1% of £30,000 is £300. You have lost 30% of your account on a 1% move.

Now run it the other way, because this is the asymmetry that decides who is still trading in a year. Lose 30% and you need a 43% gain to get back to £1,000 — not 30%. That maths is covered properly in drawdown and the recovery problem, and it is the reason position sizing is the first skill worth learning, ahead of any strategy.

What the rules protect you from — and what they don't

Retail traders in the UK and EU have three protections that did not exist a decade ago, all of them in the FCA Handbook:

• Leverage caps, as above.
• Margin close-out: the broker must close your positions when your account funds fall to 50% of the margin required to keep them open.
• Negative balance protection: you cannot lose more than the total funds in your CFD account, so a gap in the market cannot leave you owing your broker money.

None of that protects you from losing your deposit. The close-out rule decides when the loss stops; it does not prevent it. Read those three protections as a floor under a bad outcome, not as a safety net under a bad plan.

The loss statistic, and how to check it properly

You will see a figure quoted everywhere for how many retail traders lose money. It is usually a round number with no source attached, and it is often lifted from marketing copy.

There is a better version available to you. FCA rules require a firm selling CFDs to publish the percentage of its own retail client accounts that lost money, recalculated every three months over the preceding twelve months. That number is on the broker's own website, it is specific to that broker, and it is current. Before you open an account anywhere, find that disclosure and read it. A site-wide average tells you about an industry; the broker's own figure tells you about the place you are about to put money.

What forex isn't

It is not a shortcut, and the honest framing matters more here than anywhere else on this site. Forex is not income that arrives without work, no strategy removes the possibility of loss, and no signal service knows where price is going next. A part-time trader on a small account, sizing positions properly, is running a slow and unglamorous process — which is the only kind that survives a losing streak.

If that is the version you want, the next step is learning to read a quote: reading a currency pair, then pips, lots and leverage.