What Moves a Currency
Interest rates, inflation, growth and investor fear all move currencies. Here are the main forces, with a real example of how far a major currency can swing in a single year.
Interest rates lead
Money tends to flow toward higher interest rates. When a central bank raises rates, or markets expect it to, its currency often strengthens because investors earn more holding it. When rates are cut, the currency often weakens.
| Surprise | Typical effect on the currency |
|---|---|
| Central bank raises rates more than expected | Strengthens |
| Central bank cuts rates more than expected | Weakens |
| Inflation runs hotter than expected | Mixed: rate hikes may follow, but buying power erodes |
| Economy grows faster than expected | Often strengthens |
| Global panic | Safe havens like the dollar and yen often strengthen |
General tendencies, not rules. Markets react to surprises, not to what was already expected.
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