When
it comes to boosting exports, inflation matters at least as much as the
exchange rate.
The decision by the
Central Bank of Egypt (CBE) to let
the Egyptian pound depreciate was applauded by some
commentators. They argued that a weaker pound can boost exports by making
them cheaper relative to their competitors. However, even in theory, this
argument is incomplete and misses important ingredients. Careful analysis shows
that when it comes to boosting exports, inflation matters at least as much as
the exchange rate.
Let’s take an example.
Consider a situation in which Egypt and the US produce an identical good, which
they export to the rest of the world. Suppose that the price of the Egyptian
good is 100 pounds, and the price of the US-produced good is $100. Now, assume
that the exchange rate is such that 1 pound = $1. This means the price of the
Egyptian good in dollars is $100, exactly the same as the price of its American
counterpart. Consumers will therefore be indifferent between buying either.
Suppose that the
CBE then decides to let the pound depreciate by 10%, so that $1 = 1.1 pound. The
price of the Egyptian good is still 100 pounds, but its price in dollars is now
$91 (=100/1.1). Because the Egyptian good costs less than the American one
(which is sold at $100), consumers will choose to buy more of the Egyptian good
at the expense of the American one. This is exactly the argument that proponents
of the recent depreciation of the pound make.
Assume then that inflation
in Egypt is 20% but it is zero in the US. This level of inflation implies that
the Egyptian good now costs 120 pounds. This
is equivalent to $109 (=120/1.1). The Egyptian good is now more expensive than
the American one, which still costs $100. Inflation has basically wiped out all
the competitiveness gains from the currency depreciation.
What are the
lessons of this simple example?
1. Inflation is at
least as important as the exchange rate when it comes to making exports more
competitive in international markets. In other words, it is real exchange rate
(which also takes inflation into account) not nominal exchange rate that
matters for exports.
2. With Egypt
running double-digit inflation and most of the rest of the world operating at
below 2% inflation rates, the CBE has room to improve the appeal of Egyptian
exports by reducing inflation, not just the value of the currency.
Of course, these
conclusions are under the assumption that Egyptian exports respond to
improvements in price competitiveness (equivalently, a fall in the real
exchange rate)—an assumption that is not uncontroversial. But this is another story.