Inflation and Exchange Rates as Yield-Curve Leading Indicators
Summary
The note considers which economic variables may move before changes in government yield curves. It argues that, in developed markets with credible monetary control, rising inflation tends to precede yield-curve flattening, while increases in overnight rates occur later as central banks respond. The proposed mechanism is that rate hikes intended to contain inflation flatten the curve.
For emerging markets, the note suggests watching a falling exchange rate when policymakers prioritize currency stability and use higher interest rates to defend it. It cites the US, Hong Kong, Europe, Japan, the US in the 1970s, and East Asia in 1997 as contextual examples, but provides no systematic data or quantitative tests. Currency management and institutional conditions can disrupt the pattern, and the author reports finding no correlation in severely underdeveloped, corrupt markets. These are qualitative observations, so the suggested lead relationships should not be treated as universal or precisely established.
Key ideas
- Rising inflation is proposed as an early signal of later yield-curve flattening in developed markets.
- Central-bank increases in overnight rates are described as a later response to inflation.
- A falling exchange rate may signal pressure toward higher rates in economies defending their currencies.
- Weak monetary control and poorly managed currencies can make these relationships less reliable.
- The note offers qualitative observations rather than a measured forecasting model.
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Full text
# Economic indicators leading the yield curve # Economic indicators leading the yield curve There is a lot of research on how the government yield curve can be used to predict the economy. The government yield curve is often seen as a leading indicator. But for which variables is the curve a lagging indicator? In other words, which economic indicators lead the government yield curve? ## Answer by user6500 (score 1, accepted) https://quant.stackexchange.com/a/10141 In the United States, the Federal Reserve is always late to adjust to rising inflation with an extreme outlier in the mid-1990s. Inflation always leads the flattening of the yield curve since the Fed raising interest rates which flattens the yield curve is usually in response to rising inflation. Poorly managed currencies or even the US in the 1970s will distort this phenomenon. In the absence of a clear monetary control such as the Fed or Hong Kong using the overnight rate to control inflation, the next best criteria is a falling exchange rate like the present situation or East Asia in 1997 as the affected countries place a much higher value on exchange rates than inflation so will only indirectly respond to inflation by trying to maintain a high exchange rate with high interest rates causing an inverted yield curve. This can help with emerging markets, but they seldom "play by the rules", so that criteria will be less accurate yet still best. For developed markets such as the US, Europe, Hong Kong, and to a much lesser extent Japan, rising inflation is the early leading indicator, and rising overnight rates is the later indicator. For completely undeveloped corrupt markets, I have found no correlation.
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