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Interest Rates
Central banks set interest rates that directly affect currency values. Higher rates attract foreign investment, increasing demand for the currency. The US Federal Reserve, European Central Bank, and Bank of England rate decisions are among the most watched events in forex markets.
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Inflation Differentials
Countries with lower inflation typically see their currencies appreciate over time. Purchasing Power Parity (PPP) theory suggests that exchange rates should adjust to equalize the price of identical goods across countries. When inflation diverges, exchange rates follow.
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Trade Balances
A country that exports more than it imports creates demand for its currency from foreign buyers. Persistent trade surpluses tend to strengthen a currency, while deficits can weaken it. China's trade surplus has been a key factor in the yuan's long-term trajectory.
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Economic Growth (GDP)
Strong economic growth attracts foreign investment and boosts confidence in a currency. GDP reports, employment data, and manufacturing indices are closely watched by traders. A country with robust growth typically sees its currency strengthen against slower-growing economies.
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Political Stability
Political uncertainty drives investors toward safe-haven currencies like the US dollar, Swiss franc, and Japanese yen. Elections, policy changes, geopolitical conflicts, and trade disputes can cause sudden and significant currency movements that no model can fully predict.
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Market Sentiment & Speculation
The forex market processes over $7 trillion daily, and much of that volume is speculative. Trader sentiment, algorithmic trading, and herd behavior can push rates away from fundamentals in the short term. This is why technical analysis remains popular alongside fundamental analysis.