What is an Exchange Rate?
An exchange rate is the financial ratio at which one national currency can be exchanged for another. It acts as the relative price of money across international borders. For example, an exchange rate of 1 USD = 0.85 EUR means that one US Dollar buys 0.85 Euros on the foreign exchange (forex) market.
Floating vs. Fixed (Pegged) Exchange Rates
Floating Exchange Rates
Most major global currencies (such as USD, EUR, GBP, JPY, and INR) operate under a floating regime. Their values change continuously 24/5 based on foreign exchange market demand and supply.
Fixed / Pegged Exchange Rates
Some national currencies maintain a fixed value pegged to a major currency. For instance, the United Arab Emirates Dirham (AED) is fixed at 3.6725 AED per 1 US Dollar.
Understanding Mid-Market Exchange Rates (The Interbank Rate)
The mid-market rate—also known as the interbank rate or spot rate—is the midpoint between the buy ("bid") and sell ("ask") prices quoted by international banks trading large volumes of currency. When commercial retail banks or airport kiosks convert money, they typically add hidden markup margins to this rate. ToolZeno displays fair mid-market benchmark rates to provide accurate valuation.
Key Factors That Drive Exchange Rate Changes
- Central Bank Interest Rates: Higher interest rates attract foreign capital investment, strengthening national currency value.
- Inflation Differential: Countries with consistently lower inflation rates experience appreciating purchasing power and currency strength.
- Trade Balance (Exports vs Imports): A trade surplus increases global demand for a country's currency.
- Economic & Political Stability: Strong GDP growth, fiscal discipline, and political stability bolster investor confidence.