The euro explained: the ECB, the eurozone and what moves EUR

The euro is the currency of 21 European Union countries, managed by a single central bank, the European Central Bank (ECB), which sets one interest rate for all of them. What moves the euro on the foreign exchange market is mainly the outlook for ECB policy compared with other central banks, euro-area growth and inflation data, energy prices, and from time to time the stresses that come from sharing one currency without sharing one government budget.

It is the second most traded currency in the world after the US dollar, and EUR/USD is the most traded currency pair. This guide explains how the euro is run and what tends to move it, so that headlines about the ECB, Italian bond yields or gas prices make sense when you see them on a EUR/USD chart.

A short history

The euro was introduced on 1 January 1999 as an accounting and electronic currency in 11 countries, replacing currencies such as the Deutsche Mark, French franc and Italian lira at fixed conversion rates. Banknotes and coins followed on 1 January 2002. The ECB itself was established in 1998 to run monetary policy for the new currency.

Membership has grown in steps. Croatia joined in 2023, and Bulgaria became the 21st member on 1 January 2026. Joining requires meeting convergence criteria on inflation, public finances, exchange-rate stability and long-term interest rates, and spending time in the ERM II exchange-rate mechanism first. Several EU countries, including Poland, Sweden, Hungary, the Czech Republic and Romania, still use their own currencies, and Denmark keeps its krone pegged to the euro within ERM II.

For traders, the history matters in one way: the euro is a young currency built on a political agreement, and in its first quarter-century it has gone through a sovereign debt crisis, years of negative interest rates and an energy shock. Each of these left marks on how markets price it.

How the ECB works

The ECB sits at the centre of the Eurosystem, which also includes the national central banks of the euro countries, such as the Bundesbank and the Banca d'Italia.

• Decision-making body: the Governing Council, made up of the six members of the ECB's Executive Board (including the President) and the governors of the euro-area national central banks. National governors vote on a rotating basis.
• Mandate: price stability, defined since the 2021 strategy review as 2% inflation over the medium term, with deviations above and below treated as equally undesirable. Inflation is measured by the Harmonised Index of Consumer Prices (HICP).
• Meetings: monetary policy meetings roughly every six weeks, eight a year. Decisions are published at 14:15 Frankfurt time, followed by a press conference at 14:45. Our guide to ECB and BoE meetings covers the day itself.

The three policy rates

The ECB sets three rates: the deposit facility rate (what banks earn on overnight deposits with the Eurosystem), the main refinancing operations rate, and the marginal lending facility rate. Because the euro area has had abundant excess liquidity since the large asset purchase programmes, the deposit facility rate is the one that effectively anchors short-term market rates, and the ECB has said it steers its stance through it. When you read "the ECB cut rates to X%", the figure quoted is usually the deposit rate.

The deposit rate was below zero from June 2014 until July 2022, when the ECB began raising rates in response to the highest inflation since the euro was created. Negative rates made the euro a cheap currency to borrow, which affected flows and swap rates on euro positions for years. The general mechanics of how rates move currencies are in our guide to central banks and interest rates.

Other tools

Besides rates, the ECB has used large-scale asset purchases (quantitative easing), long-term lending operations to banks, and forward guidance about the likely path of rates. Two tools are specific to the euro's structure:

• Outright Monetary Transactions (OMT), announced in 2012 after Mario Draghi's statement that the ECB would do "whatever it takes" to preserve the euro, allowing purchases of a country's bonds under conditions.
• The Transmission Protection Instrument (TPI), introduced in July 2022, intended to counter disorderly widening of bond yields in individual countries that is not justified by fundamentals.

Both exist because the euro has a problem no single-country currency has, which is the next section.

One currency, 21 budgets: the fragmentation question

Each euro country sets its own taxes and spending and issues its own government bonds. Investors therefore demand different yields from Germany, France, Italy or Greece. The gap between, say, Italian and German 10-year yields (often called the BTP-Bund spread) is a running measure of how comfortable markets are with the euro's weaker members.

When those spreads widen sharply, it raises the question of whether a single ECB rate suits everyone, and in the most severe case, whether the currency union holds together. During the 2010 to 2012 debt crisis, that fear weighed heavily on the euro. Since then, OMT and TPI have been designed to stop spreads widening in a disorderly way, and markets have generally treated them as a backstop.

For a forex trader, bond spreads are a background indicator rather than a trading signal. A sudden widening, for example after an Italian or French budget dispute, can weigh on the euro even when nothing has changed at the ECB. Our guide to bonds and yields explains how government bond yields work.

What moves the euro

ECB policy relative to other central banks

Exchange rates are relative prices, so what matters is not the ECB's rate in isolation but how it compares with the Fed, the Bank of England or the Bank of Japan, and above all how expectations for those rates change. If markets begin pricing more ECB cuts than Fed cuts, the expected yield advantage shifts towards the dollar, which tends to weigh on EUR/USD. The guide to interest rate differentials and currencies explains the mechanism.

Inflation and growth data

The euro area publishes a flash estimate of HICP inflation near the end of each month or the start of the next, and national figures from Germany, France, Italy and Spain often arrive a day or two earlier. Business surveys, especially the HCOB purchasing managers' indices and Germany's Ifo index, give an early read on activity, and GDP flash estimates come quarterly. Each matters to the extent it changes what the ECB is expected to do. The guide to how economic data moves forex explains why the surprise against forecasts matters more than the number itself.

Energy prices

The euro area imports most of its oil and gas, so a large rise in energy prices worsens its trade balance and hits growth. The clearest example came in 2022, when gas prices surged after Russia's invasion of Ukraine. Combined with a Fed that was raising rates faster than the ECB, EUR/USD fell below parity (one euro worth less than one dollar) that year for the first time in about two decades.

Global risk appetite and the dollar

Many EUR/USD moves are really dollar moves. A strong US jobs report, a hawkish Fed statement or a flight to safety in markets can move EUR/USD sharply without anything happening in Europe. The US Dollar Index is weighted more than half towards the euro, which is why EUR/USD and DXY tend to move in opposite directions.

Politics

National elections, budget disputes and EU-level negotiations can move the euro when they raise questions about fiscal sustainability or the union's cohesion. Trade policy matters too: the euro area is a large exporter, so tariffs and trade disputes affect its growth outlook.

Capital flows

The euro is the second largest reserve currency, well behind the dollar, according to the IMF's data on the composition of official reserves. Shifts in how reserve managers, pension funds and corporations allocate between euro and dollar assets can matter over long periods, though they rarely explain a single day's move.

Separating euro moves from dollar moves

EUR/USD is two stories on one chart. To tell whether a move is about the euro or about the dollar, compare it with euro crosses that do not include the dollar, such as EUR/GBP, EUR/JPY and EUR/CHF.

Worked example: whose news is it?

Illustrative prices. EUR/USD is 1.1000 and GBP/USD is 1.3000, so EUR/GBP is 1.1000 ÷ 1.3000 = about 0.8462.

1. A euro story. An ECB press conference is more hawkish than expected and the euro rises 0.5% against everything. EUR/USD goes to about 1.1055 (up 55 pips) and EUR/GBP to about 0.8504 (up 42 pips). Both euro pairs move together.
2. A dollar story. A weak US jobs report knocks the dollar 0.5% lower against everything. EUR/USD again goes to about 1.1055, and GBP/USD to about 1.3065, but EUR/GBP stays at about 0.8462. The euro has not changed against the pound.

On the EUR/USD chart, both days look the same. The crosses tell you which story you are trading. That matters for risk: if you bought EUR/USD for euro-specific reasons, a US data release can still decide the outcome. The guide to currency correlation covers how pairs that share a currency move together.

Worked example: sizing in a euro account

Many EU traders hold accounts in euros, so it helps to know how a EUR/USD trade converts. Illustrative numbers: a 3,000 EUR account risks 1%, or 30 EUR, with a 25-pip stop on EUR/USD at 1.1000.

1. One pip on one standard lot of EUR/USD is 10 USD, which is 10 ÷ 1.10 = about 9.09 EUR.
2. The money per pip needed is 30 ÷ 25 = 1.20 EUR.
3. The position is 1.20 ÷ 9.09 = 0.132 lots, rounded down to 0.13 lots.
4. Loss at the stop: 0.13 × 9.09 × 25 = about 29.55 EUR, plus costs.
5. Margin at the 30:1 retail limit: 0.13 lots is 13,000 EUR of exposure, so 13,000 ÷ 30 = 433.33 EUR.

Note the margin is easy to calculate when the euro is the base currency and your account is in euros: the position's value in euros is simply its size. The pip value calculator and position size calculator handle any account currency, and the guide to currency conversion and account base currency explains the conversion costs.

The euro's main pairs

• EUR/USD: the deepest pair, driven by ECB versus Fed. See the EUR/USD profile.
• EUR/GBP: two neighbouring economies with closely linked cycles, so it tends to move in a narrower range than EUR/USD; it reacts to differences between the ECB and the Bank of England. See the EUR/GBP profile and our guide to the British pound.
• EUR/JPY: combines the euro with the yen's sensitivity to risk appetite and Japanese policy. See the EUR/JPY profile.
• EUR/CHF: heavily influenced by the Swiss National Bank's attitude to the franc, which was capped against the euro from 2011 to 2015. See the EUR/CHF profile.

Under the ESMA retail rules, all four count as major pairs and carry the 30:1 leverage cap, because the euro, dollar, pound, yen and franc are all on ESMA's list. EUR/AUD and EUR/NZD do not, so they are capped at 20:1; see the major currency pairs guide for the full rule.

Common mistakes

• Reading every EUR/USD move as euro news. Often it is the dollar. Check a euro cross before drawing conclusions.
• Focusing on the ECB decision rather than the guidance. A rate change that markets fully expected often moves the euro less than a change in tone at the press conference about future meetings.
• Ignoring national data. German and French inflation figures can move the euro before the euro-area flash is published.
• Treating bond spreads as a timing signal. A widening BTP-Bund spread is a sign of stress, not an entry point; spreads can widen and narrow for weeks.
• Holding through the ECB press conference without a plan. Spreads can widen and the price can swing both ways while the President answers questions. Know the time and decide in advance whether you want to be in the market.

Frequently asked questions

How many countries use the euro?

Twenty-one EU countries use the euro as of 2026, after Bulgaria joined on 1 January 2026. A few non-EU territories and small states also use it, some under formal agreements with the EU.

Who controls the euro?

The European Central Bank, together with the national central banks of the euro countries, sets monetary policy for the euro area. Its Governing Council decides interest rates. Exchange-rate policy is formally shared with EU finance ministers, but the euro floats freely and the ECB does not target a level for it.

What is the ECB's inflation target?

Two per cent over the medium term, symmetric, measured by the Harmonised Index of Consumer Prices. The ECB treats inflation persistently above or below 2% as equally undesirable.

What makes the euro go up or down?

Mainly the expected path of ECB rates compared with other central banks, euro-area inflation and growth data, energy prices, global risk appetite and, at times, political and bond-market stress in member countries. On EUR/USD, US news often matters as much as European news.

What time does the ECB announce rate decisions?

The monetary policy decision is published at 14:15 Central European Time on meeting days, and the press conference starts at 14:45. Check the ECB's published calendar for meeting dates, which are set well in advance.

Why did EUR/USD fall below parity in 2022?

A combination of a sharp rise in energy prices, which hit the euro area's growth and trade balance after Russia's invasion of Ukraine, and the Federal Reserve raising rates earlier and faster than the ECB. Both pushed money towards the dollar.