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Inflation Expectations Increase Price Forecast Accuracy

RBNZ

The RBNZ has released research on the importance of inflation expectations when forecasting the CPI. It finds that its headline inflation projections are more accurate when expectations are included and that the 1-year mean household inflation expectations have the best forecasting power. But the difference between it and other measures is small, as the charts below show.

  • Consumer inflation expectations have been stuck above 7% since Q2 2022 and ticked up again to 7.4% in Q2 2023, close to the 7.5% recent peak. This is likely to concern the RBNZ given the predictive power for inflation and will be monitored closely.
  • Simple correlations show that while 1-year business and consumer inflation expectations are very similar with headline inflation, consumer has a better fit with underlying inflation.
  • See analysis here.
NZ CPI y/y% vs inflation expectations

Source: MNI - Market News/Refinitiv

NZ core CPI y/y% vs inflation expectations

Source: MNI - Market News/Refinitiv

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