What you'll learn
- List the main forces that move exchange rates
- Explain why interest rates matter more than almost anything else
- Recognise that expectations move prices before events do
Interest rates
Money flows towards yield. If a country's central bank raises interest rates, holding that currency pays more, so investors buy it and it strengthens. If rates are cut, or are expected to be cut, the currency tends to weaken. This single relationship explains more currency moves than any other, and it is why traders watch central banks so closely. Course 7 covers it in depth.
Economic performance
A growing economy attracts investment, pulls in foreign money and usually leads to higher interest rates later, all of which support its currency. Weak growth, rising unemployment or a widening trade deficit do the opposite. Economic data releases matter because they update the market's picture of where an economy is heading.
Inflation
High inflation erodes what a currency buys, which tends to weaken it over time. But in the short run, rising inflation often strengthens a currency, because it makes the central bank more likely to raise rates. Which effect wins depends on what the market expects the central bank to do about it.
Risk appetite and safety
When markets are nervous, money moves into currencies seen as safe: the US dollar, the Swiss franc and the Japanese yen. When confidence returns it moves back into higher-yielding or commodity-linked currencies such as the Australian dollar. Whole days can be driven by this alone, regardless of any single country's data.
Expectations move first
The market trades on what it expects, not on what has happened. A rate rise that everyone predicted moves the currency very little on the day, because the move happened over the weeks when the expectation formed. A surprise moves it a lot. This is why the same headline can produce opposite reactions on different days, and why the phrase priced in matters so much.
Key takeaways
- Demand for a currency, not the currency itself, is what changes.
- Interest rates and expectations about them are the strongest driver.
- Growth, inflation, politics and risk appetite all feed into demand.
- Prices move on the gap between what happens and what was expected.
Knowledge check
Trading forex, CFDs and other leveraged products carries a high risk of losing money. This lesson is general education, not advice. Risk disclosure.