Despite the publicity surrounding the external debts of the less devel
oped countries (LDCs), the effects of those debts on the exchange rate
s has not received much attention in the literature. This paper propos
es a structural model that is a synthesis of an asset and a monetary m
odel of exchange rates along the line of Frankel (1983), and modified
to include external debt. Estimating this model for a sample of 18 LDC
s shows that debt, in addition to the usual variables such as money su
pply and interest rates, has a largely significant and negative impact
on the external values of most of the countries' currencies.