Inflation’s Permutations

Hi, I'm Ryan Boyle, Chief US Economist for Northern Trust. Would you believe me if I said inflation is almost back to normal? I'll understand if that raises skepticism. The costs of both major purchases and everyday items still don't feel right. But let me see if I can put prices into proper perspective.

Let's start with a basic definition. Inflation is the rate at which prices change. When someone says that inflation is improving, that does not mean prices are falling. It merely means that prices are not escalating as fast as they did a year or two ago. This is a common point of confusion between economists and normal people.

A healthy economy will feature moderate inflation. Those hoping that prices will decline should be careful what they wish for. Falling prices, or deflation, can be ruinous. Japan suffered three decades of deflation, and its markets have only recently returned to their 1990 levels.

Next, let's consider how inflation is measured. The two primary gauges are the Consumer Price Index, or CPI, and the Price Index on Personal Consumption Expenditures, or PCE. The two series are produced by two different statistical agencies using different methods and different weights on various items. These variances can lead them to show different trends. The distance between them is currently fairly wide.