Fixed, Floating and Managed Exchange Rates Explained
Exchange-rate systems sit on a spectrum. Understanding pegs, floats and managed flexibility makes daily Birr rate movements easier to interpret.
An exchange rate is a price
An exchange rate tells you how much of one currency is needed to obtain another. Ethiopian bank boards normally quote the number of Birr for one unit of foreign currency. If USD/ETB rises, one dollar costs more Birr and the Birr has depreciated against the dollar.
Countries choose different frameworks for how this price is determined. In practice, the choice is a spectrum rather than a simple fixed-or-floating switch.
Fixed or pegged systems
In a fixed system, the authorities commit to a particular exchange rate or a narrow band against another currency or a basket. Maintaining the commitment can require buying and selling reserves, changing interest rates, restricting transactions or adjusting other policies.
A credible peg can provide a simple anchor for prices and trade. But it reduces monetary-policy flexibility and can become expensive to defend when inflation, trade flows or investor expectations move against the chosen rate. A peg may eventually require devaluation or tighter economic policy.
Floating systems
In a floating system, supply and demand in the foreign-exchange market play the leading role. Export earnings, imports, remittances, capital flows, interest-rate expectations and risk sentiment can all move the price.
A float lets the exchange rate absorb economic shocks and gives the central bank more room to pursue domestic monetary goals. The cost is greater day-to-day uncertainty, especially in economies with shallow financial markets or heavy dependence on imports.
Managed flexibility is common
Few systems are perfectly fixed or perfectly free-floating. Under a managed float or other flexible arrangement, market trading determines the rate while the central bank may intervene to smooth disorderly moves, build reserves or support policy objectives.
The announced legal regime and the way a currency behaves in practice can also differ. Analysts therefore look at both official commitments and actual intervention.
Where Ethiopia fits today
Since July 2024, Ethiopia has operated a market-based foreign-exchange framework. NBE says banks and authorized dealers are free to set and negotiate their own rates. Its indicative daily rate is the previous business day’s volume-weighted bank average and is not compulsory.
At the same time, the system remains regulated and NBE can make limited interventions when market conditions justify them. Ethiopia is therefore better understood as using a flexible, market-based regime—not a permanent peg and not an unregulated free float.
What the regime means for bank customers
In a market-based system, comparing banks matters because institutions can publish different buying and selling rates. The best bank-buy rate is usually preferable when you sell foreign currency; the lowest bank-sell rate is usually preferable when you buy it.
The board rate is still only part of the decision. Check the rate type, effective time, service fee, documents, transaction limit and actual currency availability before committing.