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Currency Pair

Forex Basics

A currency pair quotes the value of one currency (the base) against another (the quote), such as EUR/USD, and is the tradable instrument in forex.

Currency Pair — illustrative image

What is a currency pair?

Every trade in the forex market involves exchanging one currency for another, so currencies are always quoted in pairs — never on their own. A currency pair shows how much of one currency (the quote currency) it takes to buy one unit of the other (the base currency).

Take EUR/USD as an example. EUR is the base currency and USD is the quote currency. If EUR/USD is trading at 1.0850, that means 1 euro is worth 1.0850 US dollars. This number is the exchange rate for the pair.

Buying and selling a pair

When you “buy” EUR/USD, you are simultaneously buying euros and selling dollars, betting that the euro will strengthen against the dollar. When you “sell” EUR/USD, you’re doing the reverse: selling euros and buying dollars, betting the euro will weaken. This two-sided structure is what makes forex fundamentally different from trading a single stock — every position is a bet on the relationship between two economies, not just one.

How currency pairs are grouped

Not all pairs are equally liquid or heavily traded. The industry groups them into three broad tiers:

  • Major pairs — all include the US dollar (e.g. EUR/USD, USD/JPY) and are the most liquid, with the tightest typical spreads.
  • Minor pairs — actively traded pairs without the US dollar (e.g. EUR/GBP).
  • Exotic pairs — a major currency paired with an emerging-market currency (e.g. USD/TRY), usually with wider spreads and lower liquidity.

Why it matters to a trader

The currency pair is the actual instrument you place an order on, and its quoted price is what every pip, spread, and profit/loss calculation is based on. Knowing which currency is the base and which is the quote in a pair is the starting point for understanding how a price move translates into a gain or loss on your account.

Quick recap

  • A currency pair quotes one currency against another; you are always buying one and selling the other.
  • The first currency listed is the base; the second is the quote.
  • Pairs are grouped into majors, minors, and exotics based on liquidity and how widely they’re traded.

Related terms