What is Forex Trading? A Complete Beginner’s Guide

Forex — short for foreign exchange — is the global marketplace where currencies are bought and sold. With roughly $7 trillion in daily volume, it is the largest and most liquid financial market in the world, larger than every stock exchange combined. It runs 24 hours a day, five days a week.

This guide is longer than most, because the short version of forex is the part that gets people into trouble. It covers how a quote works, what a trade costs in actual money, what leverage does to an account, two worked examples with the arithmetic shown, and — the section most guides leave out — who this is not for.

Where forex is actually traded

There is no forex exchange. No building, no bell, no single official price. Currencies trade over the counter: banks and institutions quoting prices directly to each other and to brokers, continuously, around the world. Your broker's price comes from the liquidity providers quoting it at that moment.

Two practical consequences follow, and both matter more than they sound.

The first is that the price is not one number. Different venues quote slightly differently, and a spread exists because someone has to be paid for standing between the buyer and the seller.

The second is that liquidity moves with the clock. When London's banks are dealing, a great many institutions compete to fill your order and the spread is tight. At 03:00 UTC very few are, and the same trade costs more — with nothing about the currency having changed. You can see which sessions are dealing right now rather than guessing.

How to read a quote

Currencies always trade in pairs: buying one means selling the other. In EUR/USD, the euro is the base currency and the dollar is the quote currency, and the price says how many dollars one euro costs. At 1.0850, one euro costs 1.0850 dollars.

A quote has two prices, not one:

EUR/USD 1.08500 / 1.08512

The first is the bid — what you can sell at. The second is the ask — what you can buy at, and always the higher of the two. The gap between them is the spread, here 1.2 pips, and it is the cost of getting in.

This is why a new position starts slightly negative. Buy at the ask and you could immediately sell only at the bid, which is lower. The market has to move in your favour by the width of the spread before you are level.

Major pairs — EUR/USD, GBP/USD, USD/JPY, USD/CHF: the most liquid, with the tightest spreads.
Minor pairs — crosses without the dollar, like EUR/GBP or AUD/JPY.
Exotic pairs — a major against an emerging-market currency, such as USD/ZAR. Wider spreads, thinner liquidity, sharper moves on local news.

Pips, lots and what a pip is worth

A pip is the smallest standard price move — the fourth decimal place (0.0001) on most pairs, the second (0.01) on yen pairs, because the yen is quoted differently.

Trade sizes are measured in lots. A standard lot is 100,000 units of the base currency, a mini lot 10,000, a micro lot 1,000. Micro lots are how most beginners keep risk small while learning.

What a pip is worth is where people get caught. On a dollar-quoted pair like EUR/USD, one pip on one standard lot is exactly $10, and it stays $10 whether the price is 1.05 or 1.25. On USD/JPY it is not: the pip is worth yen, so converting it to dollars depends on the rate. At 100.00 it is $10; at 150.00 it is about $6.67. The same 40-pip stop costs a different amount of money depending on where the yen is trading. Our pip value calculator shows the arithmetic rather than just the answer.

What moves currency prices

Interest rates — the single biggest driver. Higher rates attract capital and tend to strengthen a currency.
Central bank policy — statements from the Fed, ECB, Bank of England or Bank of Japan can reprice an entire currency in minutes.
Economic data — inflation and employment releases move markets within seconds.
Geopolitics and sentiment — elections, conflicts and risk appetite push flows between safe-haven and higher-yielding currencies.

There is a catch worth understanding early, because it explains a great deal of otherwise baffling price action: what moves a price is not the number, it is the gap between the number and what was already expected. The expectation is in the price before the release. This is why a strong figure is sometimes followed by a fall — strong was already assumed, and the market had positioned for stronger.

Everything scheduled is published in advance by the institutions themselves. Our economic calendar lists what is coming, with the official source beside each entry and deliberately without forecast numbers.

Leverage, margin, and the part that ends accounts

Forex is traded on margin. With 100:1 leverage, a $1,000 deposit controls a $100,000 position.

The half people remember is that leverage makes a small deposit go far. The half that matters is that the whole $100,000 moves with the market. A 1% move against you — an ordinary day — is $1,000, which is the entire deposit. Leverage does not increase your exposure; it reduces the deposit needed to take it. The exposure was always the risk.

Three terms follow from this, and they are not interchangeable:

Margin is the part of your balance set aside while the position is open. It is your own money, not a fee, and it comes back when you close. Our margin calculator shows both the margin and the position value, because the difference between the two is the point.

Margin call is the warning that losses have eaten far enough into your equity that the account is close to acting on its own. It is not a request for money so much as a notice. By the time it arrives, the decision that mattered — position size — was made days ago.

Stop-out is the platform closing your positions automatically because margin has run out, largest loss first, at whatever price exists at that moment. It is not a stop loss you chose, it happens whether you are watching or not, and in a fast market it can fill well past the level you expected.

A worked example: going long

You expect the euro to strengthen. EUR/USD is quoted 1.08500 / 1.08512.

You buy one mini lot (10,000 units) at the ask, 1.08512. On a mini lot, one pip is worth about $1.

The spread is 1.2 pips, so you are about $1.20 down the moment you open.
You place a stop 30 pips below at 1.08212 and a target 60 pips above at 1.09112.
The euro rises and your target fills. The move in your favour is 60 pips: +$60, less the $1.20 spread, so about $58.80.
Had the stop filled instead, the loss would have been 30 pips: −$30, plus the spread.

Two pips more or less on the spread barely registers here. Scale it and it does: on a standard lot the same 1.2-pip spread costs $12, and a trader placing five standard-lot trades a day pays around $60 a day — roughly $1,200 a month — before a single trade has been counted as a win or a loss. This is why experienced traders care about a half-pip difference that looks trivial on a quote screen.

A worked example: going short

Unlike buying shares, profiting from a falling price is not an exception in forex — it is built into the structure. Every trade is a purchase of one currency and a sale of another, so "short EUR/USD" simply means you bought dollars with euros.

You expect the euro to weaken. Same quote, 1.08500 / 1.08512.

You sell one mini lot at the bid, 1.08500.
EUR/USD falls to 1.07900. You close by buying back at the ask, say 1.07912.
The move in your favour is 1.08500 − 1.07912 = 0.00588, or 58.8 pips: about +$58.80.

Note where the spread appeared: you sold at the lower price and bought back at the higher one. It is charged on the way in and the way out either way, whichever direction you took.

You can run either scenario, including the losing version, on our profit and loss calculator. Putting the stop in as the exit price before the target is the habit worth building — seeing the loss in money, in advance, is what stops a position being sized on optimism.

What a trade costs, in full

The complete sum has three parts, and any quote that mentions one of them is quoting part of a price:

Spread — charged on every trade, in and out. It is not fixed: it widens when fewer banks are quoting and widens sharply in the seconds around a data release.

Commission — a fee per lot on account types that offer tighter raw spreads in exchange. Ultimo charges no separate commission on forex; the cost is in the spread.

Swap, or overnight financing — a daily credit or debit for holding a leveraged position past the rollover, reflecting the interest difference between the two currencies. Held for a night it is negligible. Held for a month it can outweigh the spread entirely, and it is the cost people are most often surprised by. One day a week — usually Wednesday — three days' worth is charged at once to cover the coming weekend.

Position size: the calculation to do first

Most beginners choose a size that feels right and discover afterwards what it risks. Doing it the other way round is the single habit that separates accounts that survive a bad month from accounts that do not.

Decide what you are willing to lose — one to two percent of the account is what most professionals work to — then let the size fall out of the arithmetic. On a $10,000 account risking 1% with a 50-pip stop on EUR/USD: $100 of risk, divided by 50 pips at $10 a pip, is 0.20 lots. Our position size calculator does it in the same order and rounds down, because rounding up would quietly break the limit you just set.

The percentage is also what makes a losing run survivable. At 2% per trade, ten losses in a row — which happens to everyone eventually — costs about a fifth of the account. At 10% it is most of it, and what remains cannot recover the rest.

Sessions and when to trade

Liquidity follows the sun. The conventional windows in UTC are Sydney 21:00–06:00, Tokyo 00:00–09:00, London 07:00–16:00 and New York 12:00–21:00. They shift by an hour around daylight-saving changes, which the four regions make on different weekends.

The London–New York overlap, roughly 12:00–16:00 UTC, is the deepest part of the day: the tightest spreads and the heaviest volume. Deepest is not the same as easiest — the same hours carry most of the scheduled news and the sharpest reversals, and a beginner who moves to them without reducing size has increased both sides of the equation.

Spot forex closes Friday 21:00 UTC and reopens Sunday 21:00 UTC. The market hours page shows which sessions are dealing right now.

Common beginner strategies

Trend following — trade in the direction of the prevailing trend, confirmed by moving averages.
Breakout trading — enter when price escapes a defined range on strong momentum.
Swing trading — hold for days, capturing medium-term moves without screen-watching.
Scalping — very short-term trades capturing small moves; demands tight spreads and fast execution, and pays the spread more times than any other approach.

Whichever you choose, test it on a demo account before committing real capital — and read what a demo cannot teach you before trusting the results.

What can go wrong

Every article about forex lists the upside. These are the things that surprise people, and none of them are edge cases.

The price gaps over your stop. A stop loss is an instruction to close at a level, not a guarantee of that level. When the market reopens on Sunday after weekend news, or when a central bank surprises everyone mid-session, the price can jump straight past your stop. This is why position size matters more than stop placement: your stop controls your intended loss, your size controls your possible one.

Slippage on entry. In fast markets the price you clicked and the price you got may differ. It runs both ways, though you will remember the times it went against you.

Weekend risk. Anything that happens between Friday's close and Sunday's reopen is priced in at once, with no chance to react. Traders who hold over a weekend either size for it or do not hold over a weekend.

The costs you did not count. A method that looks profitable on the price move alone can be unprofitable once the spread is paid on every trade and financing on every night.

None of these mean forex is a trap. They mean the risk you accept when you open a position is not only the distance to your stop.

Who forex is not for

Most guides stop at the risk warning. This is the more useful version of it.

Forex is a poor fit if the money you would deposit is money you need. Leverage compresses the time in which a bad week becomes a problem, and trading with money that has a job elsewhere changes how you take every decision — usually by making you hold losers and cut winners.

It is a poor fit if you are looking for income on a schedule. Markets do not produce a monthly wage, and the pressure to make one is what turns a method into improvisation.

And it is a poor fit if the appeal is the recovery of a previous loss, in this market or another. That is the single most reliable way to turn a bad day into a bad month, and it has a name — revenge trading — precisely because it is common enough to need one.

None of this is a reason nobody should trade. It is a reason to be honest about which of these applies to you before you deposit, rather than afterwards.

Choosing a forex broker

Before you deposit anywhere, check three things: regulation (Ultimo Securities is authorized and regulated by the Financial Services Commission of Mauritius, license GB24203027), fund safety (client money held in segregated accounts with top-tier banks), and the true cost of trading — spread, commission and financing together, not one of the three. Execution quality matters too: Ultimo runs on London LD4 Equinix servers with direct connections to tier-1 liquidity.

Our guide on how to choose a regulated forex broker sets out what to verify and where, including how to check a licence on the regulator's own register rather than taking a website's word for it.

Start trading forex with Ultimo

Ultimo offers 20+ currency pairs with competitive spreads, margin set per instrument and MetaTrader 5. If a term here was unfamiliar, the glossary defines it in plain language. Explore forex trading with Ultimo, practise on a free demo, and open your live account when you are ready.