A fixed exchange rate (or pegged rate) is when a country's central bank maintains a currency's value at a constant level against another currency or commodity, typically gold or the US dollar. Unlike floating rates that move freely with market supply and demand, a fixed rate is artificially held steady.
How Central Banks Maintain Fixed Rates
The central bank intervenes directly in the foreign exchange market to prevent deviation. If the market pushes the exchange rate above the peg, the bank sells its own currency and buys the reference currency to push the rate back down. Conversely, if the market pushes it below the peg, the bank buys its own currency. This requires the central bank to hold large foreign exchange reserves.
Example
If Country A pegs its currency to the US dollar at 1:1, and market forces try to push it to 1:1.2, the central bank would sell its domestic currency and buy dollars to restore the 1:1 peg.
Implications for Forex Traders
Fixed exchange rates create predictability in currency prices, which can reduce volatility and make hedging decisions more straightforward. However, they also create risks: if a currency becomes overvalued or undervalued relative to economic fundamentals, speculators may attack the peg, potentially forcing a sudden revaluation. Traders should also be aware that central banks defending a peg can run down their reserves, signaling potential future policy changes.
Challenges of Fixed Rates
Fixed rates limit a country's monetary policy flexibility and may not accommodate inflation or deflation, creating economic imbalances.
