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RockstarMarkets
All glossary
Forex

Base vs quote currency

In EUR/USD, EUR is the base (what you're buying) and USD is the quote (what you're paying with). The quote price says how many quote-currency units = 1 base.

What it means

Every FX pair has a base currency (first listed) and a quote currency (second listed). The price tells you how much of the quote currency one unit of the base costs. EUR/USD = 1.0850 means 1 EUR costs 1.0850 USD. Going long EUR/USD = buying EUR and selling USD simultaneously. Going short EUR/USD = the inverse. Notional exposure is denominated in the base currency.

Why it matters

The base/quote distinction underlies every operational detail: pip value is in the quote currency, notional is in the base currency, P/L converts back to your account currency through both. Reverse a pair conceptually (USD/EUR instead of EUR/USD) and everything flips. Most retail confusion ('why did I make money when EUR/USD went down?') traces back to mis-reading which side is base.

How to use it

Read every pair as 'how much quote to buy 1 base.' Mentally convert pair quotes into your account currency before sizing. If EUR/USD is 1.0850 and your account is USD, a 1-lot EUR/USD long = +100,000 EUR / -108,500 USD notionally. P/L when the pair moves to 1.0900: +500 USD on the standard lot.

Example

GBP/USD at 1.2640 = 1 GBP costs 1.2640 USD. Long 1 standard lot GBP/USD = +£100,000 / -$126,400 notional. Pair rises to 1.2700: P/L = +$600 in account terms (USD here).

Deep dive

Conventional pair ordering — why EUR is base vs USD

FX market convention orders pairs by historic seniority: EUR > GBP > AUD > NZD > USD > CAD > CHF > JPY. EUR/USD, not USD/EUR. GBP/USD, not USD/GBP. AUD/USD, not USD/AUD. Once USD is the base, the order continues: USD/JPY, USD/CHF, USD/CAD. There's no economic reason — it's a convention preserved from London FX market days. Recognising the ordering helps you read quotes faster.

Direct quote vs indirect quote

From a US trader's perspective, a 'direct quote' has USD as the quote currency (EUR/USD, GBP/USD): the quote tells you how many USD per foreign unit. An 'indirect quote' has USD as the base (USD/JPY, USD/CHF): the quote tells you how many foreign per USD. Pip value math differs between the two (constant $10/pip for direct vs varying for indirect). The terminology is jurisdictional — in Tokyo, USD/JPY is the direct quote.

Frequently asked

If I go long EUR/USD, am I buying EUR or USD?

Buying EUR, selling USD. The base currency is what you go long when you 'buy the pair.' Reverse for short: shorting EUR/USD = selling EUR, buying USD.

Why is EUR always the base?

Pure convention — EUR was placed at the top of the FX-pair seniority list when the euro launched in 1999, replacing the German mark which had held the top slot before. The list is: EUR > GBP > AUD > NZD > USD > CAD > CHF > JPY.

How does base/quote affect my P/L conversion?

P/L is denominated in the quote currency by default. If your account is in the quote currency (USD account, EUR/USD trade), P/L is direct. If your account is in a third currency (USD account, EUR/JPY trade), the broker converts JPY P/L back to USD at the current exchange rate.

Take it further

Want a worked example or a deeper dive? Ask Rocky how this concept applies to your specific watchlist or trade idea.

Ask Rocky