What Moves Forex Prices? 8 Key Factors Explained

Updated October 2026. First published January 2013.

Forex prices move mainly because of interest rate expectations, inflation, economic data, central bank action, politics and risk sentiment. News is simply how these forces reach your chart. This post first went up in 2013, and I've rewritten it so you can see what each factor does and how to check it before you trade.

Key Takeaways

• Markets react to expectations and surprises, not just to good or bad news.
• Interest rates and central bank signals are usually the strongest drivers over time.
• Most big spikes are scheduled, so check the economic calendar before every trade.

1. Interest rates and central bank policy

Higher interest rates tend to attract investors looking for better returns, which can strengthen a currency. Lower rates can do the opposite. What matters most is expectations. If everyone already expects a rate hike, the hike itself may barely move price, but a surprise can move it fast.

Central banks such as the Federal Reserve, the ECB, the Bank of England and the Bank of Japan also guide the market through their statements. Sometimes a government or central bank steps in directly to buy or sell its own currency. This is called intervention. It can cause sharp moves, but it doesn't always change the longer trend.

Read more: How interest rates affect forex prices

2. Inflation

Rising inflation can weaken a currency because each unit buys less. But it also pushes central banks to raise rates, which can strengthen it. So, the reaction depends on what traders think the central bank will do next, not on the inflation number alone.

3. Jobs and growth data

Reports such as US Non-Farm Payrolls, unemployment, GDP, retail sales and PMI surveys show how healthy an economy is. Strong data often supports a currency, because it suggests higher rates or stronger demand. Weak data can pull it down. Again, the surprise matters: a good number that was expected can do very little.

4. Political stability and geopolitics

Elections, policy changes, conflicts and sanctions create uncertainty. When uncertainty rises, money often moves toward perceived safe havens such as the US dollar, the Swiss franc and the Japanese yen. That isn't guaranteed every time, but it is a pattern traders watch.

5. Risk sentiment

Traders often describe the market mood as risk-on or risk-off.

• Risk-on: investors feel confident. Currencies linked to growth, such as the Australian and New Zealand dollars, often do better.
• Risk-off: investors get nervous. Money tends to flow into the dollar, yen and franc.

6. Commodity prices

Some currencies follow the goods their countries export. The Canadian dollar is often linked to oil, and the Australian dollar to metals such as iron ore and gold. These links change over time, so treat them as clues, not rules.

7. News and data releases

News is how most of the factors above hit the chart. Scheduled releases can move price in seconds, and spreads often widen at the same moment. That's why checking the calendar first is one of the simplest ways to avoid being caught by a spike.

Read more: How to read a forex economic calendar

8. Liquidity and timing

Volume isn't spread evenly across the day. Activity is usually higher during the London and New York sessions, especially when they overlap, and thinner outside them. Thin markets can move oddly, and spreads can be wider. See our guide to forex trading hours and sessions and why timing matters in the killzones.

Quick reference

Factor	Typical effect	Often watched
Interest rates	Higher expected rates can support a currency	USD, EUR, GBP, JPY
Inflation	Depends on the central bank's response	All majors
Jobs and growth data	Strong data often supports a currency	USD, EUR, GBP
Politics	Uncertainty can drive safe-haven flows	USD, CHF, JPY
Risk sentiment	Risk-on vs risk-off flows	AUD, NZD, JPY
Commodities	Export prices can influence a currency	CAD, AUD
News releases	Short, sharp moves and wider spreads	Any pair
Liquidity	Bigger moves in busy sessions	Any pair

A simple example (illustrative numbers)

Tell US inflation comes in higher than analysts expected. Traders may decide the Federal Reserve will keep rates higher for longer. Demand for dollars can rise, and EUR/USD may fall. If inflation had matched the forecast instead, the move would often be small. The same number can produce very different reactions, depending on what the market expected.

How to use this before you trade

1. Check the economic calendar for high-impact news on your pair in the next 60 minutes.
2. Ask what the market expects, not only what the number is.
3. Note the session you're trading in and how busy it is.
4. Set your stop-loss before you enter.
5. Practice the routine first on our demo trading simulator.

FAQ

What is the biggest factor that moves forex prices? No single factor always wins. Over longer periods, interest rate expectations and central bank policy usually matter most. Data releases and news drive the short-term spikes.

Does good news always strengthen a currency? No. If the market expected even better news, a good number could still lead to a fall. It depends on expectations.

Can one trader or institution move the forex market? A single trader can't. Central banks and very large institutions can influence prices for a time, but no one controls the market over the long run.

Where can I follow currency news? Use an economic calendar, central bank websites, and reputable financial news sources.

Trading forex on margin carries a high level of risk and may not suit every investor. This post is for education only and is not financial advice.