Measuring the Health of an Economy

Growth indicators tell you how healthy an economy is right now — and for some, where it's headed next. This lesson covers the main releases and one distinction that changes how you read all of them.

GDP

Gross Domestic Product is the total value of goods and services produced over a period — the broadest single measure of economic health. Reported quarterly (quarter-over-quarter annualized and year-over-year), often in stages: an advance estimate followed by revisions as more data comes in.

PMI

Purchasing Managers' Index surveys ask business managers whether conditions (orders, output, employment, prices) improved, worsened, or held steady. Above 50 signals expansion, below 50 contraction. Published monthly, well ahead of quarterly GDP — one of the most timely growth signals available.

ISM

The US equivalent of PMI, covering manufacturing and services separately. Same 50-line reading, watched with the same urgency.

Retail sales

One of the most direct reads on consumer spending — the largest single component of GDP in most developed economies. Reported both with and without autos, since large, lumpy auto purchases can distort the headline number.

Industrial production

Output from manufacturing, mining and utilities. A narrower slice than GDP, but monthly rather than quarterly — a more frequent read on the goods-producing side of the economy.

Consumer confidence

Survey-based measures of how optimistic consumers feel about current and future conditions. Doesn't directly measure activity, but tends to lead spending — an uncertain household is more likely to delay a major purchase.

Durable goods

Orders for goods expected to last three years or more — machinery, vehicles, appliances, aircraft. Sensitive to business and consumer confidence since these purchases are easy to delay; the "core" measure (excluding volatile aircraft orders) is often watched more closely than the headline.

Housing data

Starts, permits, sales, prices — especially interest-rate sensitive, since most home purchases involve borrowing. Housing often shows the effect of a tightening or easing cycle faster than other parts of the economy.

Leading vs lagging indicators

This distinction changes how you weight everything above:

• Leading indicators (PMI, confidence, new orders, housing permits) change before the broader economy does.
• Lagging indicators (unemployment, GDP itself) confirm a trend only after it's already underway.