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Forex: Balance of Payments
Buy when the coloured
lines are at the low end of their range, sell when they are high
This is a
"what-if" tool that is intended to highlight currency cycles that are ultimately
self-correcting owing to lagged effects on the balance of payments. It is designed to show
the risk to the exchange rate based on the payments deficit on current account, including
a Best Guess as to future developments. For comparability, exchange rates have been
rebased to set year-end 1994 at 100.
In each chart the currency
index is shown as the thick
white line on the right hand
axis. The main explanatory variable, the balance of payments on current account, shown as the thin yellow line, uses the left hand axis. A Best Guess as to
the future development of the valuation ratio is also shown on the left hand axis, as the thin orange line.
Best Guesses suggest what is
widely expected to happen to the ratio of the balance of payments on current account to
GDP, assuming constant exchange rates. Forecasts are based on consensus estimates the
current account and GDP.
Please note this is a
lagging indicator, where forecasts of the balance of payments are likely to be
self-defeating, through pre-emptive changes in exchange rates. Such "what-if"
analysis should be interpreted for its usefulness in predicting the likelihood of currency
movements. Owing to its lagging nature, this indicator is not a component of the
econometric forecasting model. Comparisons between countries are of limited usefulness,
owing to differing long-term trends in capital flows.
See also the relevant Valuation chart to
study in greater depth the cyclical patterns that frequently arise through the J-curve
effect on the balance of payments, whereby initial price effects may "justify"
and serve to exaggerate movements in the real effective exchange rate before
countervailing volume effects create offsetting movements up to two years later.
Owing to the conversion of
legacy currencies into Euros, analysis is provided on the common currency, rather than for
individual countries. Historical data is provided by creating synthetic GDP-weighted
time-series for the component currencies, expressed in the European Currency Unit.
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