How Forex Currency Pairs Work

In the foreign exchange (forex) market, currencies are always traded in pairs. When you buy one currency, you are simultaneously selling another. Every forex quote consists of two currencies: the base currency (listed first) and the quote currency (listed second).

For example, in the pair EUR/USD, the Euro is the base currency and the US Dollar is the quote currency. A price of 1.0850 means it costs 1.0850 US dollars to buy 1 Euro.

The Three Categories of Currency Pairs

Major Pairs

Major pairs always include the US Dollar (USD) on one side. They are the most traded pairs in the world, offering the highest liquidity and typically the tightest spreads.

  • EUR/USD — Euro / US Dollar
  • GBP/USD — British Pound / US Dollar
  • USD/JPY — US Dollar / Japanese Yen
  • USD/CHF — US Dollar / Swiss Franc
  • AUD/USD — Australian Dollar / US Dollar
  • USD/CAD — US Dollar / Canadian Dollar

Majors are the best starting point for new forex traders because of their predictable behaviour and lower trading costs.

Minor Pairs (Cross Pairs)

Minor pairs — also called cross pairs — do not include the US Dollar. They pair two other major currencies against each other. Examples include EUR/GBP, GBP/JPY, and AUD/NZD. These pairs are still reasonably liquid but tend to have slightly wider spreads than majors.

Exotic Pairs

Exotic pairs combine one major currency with the currency of a developing or smaller economy — such as USD/TRY (US Dollar / Turkish Lira) or EUR/ZAR (Euro / South African Rand). Exotics can offer larger price swings but come with wider spreads, lower liquidity, and higher volatility. They are generally recommended only for experienced traders.

Key Concepts Every Forex Trader Must Know

Pips

A pip (percentage in point) is the smallest standard price move in a forex pair. For most pairs, a pip is a movement in the fourth decimal place (0.0001). For JPY pairs, a pip is at the second decimal place (0.01).

Spread

The spread is the difference between the bid price (what you can sell at) and the ask price (what you can buy at). It is effectively the broker's transaction fee. Tighter spreads on major pairs make them more cost-effective to trade frequently.

Lot Sizes

Forex is traded in lots. A standard lot is 100,000 units of the base currency. Many brokers offer mini lots (10,000 units) and micro lots (1,000 units), making forex accessible with smaller capital through leverage.

What Moves Currency Prices?

Currency prices are driven by a range of macroeconomic factors:

  • Interest rate decisions — Higher interest rates typically attract foreign capital, strengthening a currency.
  • Inflation data — CPI readings influence central bank policy and therefore currency direction.
  • Employment figures — Strong jobs data signals economic health and can boost a currency.
  • Geopolitical events — Political instability, elections, and trade disputes create currency volatility.
  • Trade balances — Countries that export more than they import tend to see demand for their currency.

Choosing the Right Pair to Trade

As a beginner, start with one or two major pairs and study them deeply. Learn the economic calendars of the countries involved, observe how the pair reacts to news events, and develop a feel for its typical daily range and volatility. Breadth of knowledge across dozens of pairs is far less valuable than deep expertise in a few.

Final Thoughts

The forex market is the largest and most liquid financial market in the world. Understanding how currency pairs work, what drives their movements, and how to read a quote correctly is your essential first step. Build this foundation before adding leverage, complex strategies, or exotic pairs into the mix.