Leading Indicators and Recession Signals

Why this matters

As Business Cycles and Recessions explained, recessions are officially dated months after they begin. Investors, businesses, and central banks want to know sooner, so they watch indicators that have tended to turn before the economy does. Each one has a record of hits, and each has misses. This lesson goes through the main ones and what their records show, so that the next headline announcing a recession signal can be read for what it is.

Leading, coincident, and lagging

• Leading indicators tend to turn before the economy as a whole: orders, permits, jobless claims, financial conditions, expectations.
• Coincident indicators move with it: employment, income, sales, and output.
• Lagging indicators turn after it, confirming what has already happened.

The Conference Board, a business research group, combines ten leading series into its Leading Economic Index, which it describes as anticipating turning points in the business cycle by around seven months.¹

The Conference Board.¹ The coincident components are among the data used to date US recessions. In August 2026 the leading index fell 0.1% to 99.5, its six-month change was −0.1%, and the Conference Board said no recession signal had been triggered.¹

The yield curve

An inverted yield curve, with short-term rates above long-term ones, is the most famous signal. The Yield Curve in Depth went through every case since 1989: each of the four longer inversions before 2022 was followed by a recession, after a wait of 11 to 23 months. The inversion that began in October 2022 was the longest and deepest in that record, and no recession had been dated by October 2026. One reading is that the signal failed this time; another is that its record was always built on a handful of cases.

Housing permits

A study of postwar US recessions found residential investment to be the best early warning among the parts of GDP.² Building permits, the first step in construction, turned early before the 2008 recession.

Census Bureau figures.³ Permits peaked more than two years before the 2008 recession began. Their fall since 2022 has been smaller, and so far it has come with slower building rather than a recession.

The Sahm rule

Economist Claudia Sahm proposed a rule based on the unemployment rate. It signals the start of a recession when the three-month average of the unemployment rate rises 0.50 percentage point or more above its lowest three-month average of the previous 12 months.⁴

Unemployment rate, last three months	4.0%, 4.1%, 4.3%
Current three-month average	4.13%
Lowest three-month average in the prior 12 months	3.60%
Rise	0.53 point: the rule is triggered

Averaging over three months keeps a single noisy month from setting it off, and comparing with the recent low catches a turn in the job market early.

Using the unemployment data that were available at the time, the rule's record looks like this:

Real-time Sahm rule indicator; recession start dates are the National Bureau of Economic Research's business cycle peaks.⁴⁵ The rule caught every recession, but almost always after it had begun. It's best read as a fast confirmation, months ahead of the official dating, rather than a forecast. In July 2024 it reached 0.53, peaked at 0.57 in August, and was back below 0.50 by October, and no recession has been dated around it.

Credit spreads

When lenders grow worried, the extra yield they demand on corporate bonds over Treasuries widens. The gap between Moody's Baa corporate yields and the 10-year Treasury yield has averaged 2.26 percentage points since 1986.⁶

Federal Reserve Bank of St. Louis, from Moody's data.⁶ Six months before the 2008 recession began, spreads were well below average. They widened sharply once the trouble was under way. Spreads show stress clearly when it arrives; as an early warning, their record is mixed.

Consumer sentiment

The University of Michigan's index of consumer sentiment reached 55.3 in November 2008, in the middle of the financial crisis. It fell lower in June 2022, to 50.0, and to 44.8 in May 2026, its lowest reading on record, without a recession being dated in either case so far.⁷ Both recent lows came during bursts of inflation, in 2022 and during the 2026 energy price jump, which suggests sentiment reflects prices as much as jobs. That makes it a noisy guide to recessions.

Professional forecasters

The Philadelphia Fed's Survey of Professional Forecasters asks economists each quarter for the probability that real GDP will fall in the following quarter. The average is known as the anxious index.⁸

Federal Reserve Bank of Philadelphia figures; each probability comes from the survey taken in the quarter before.⁸⁵ On the eve of these three recessions, the professionals put the odds well under even. In early 2023, they put them close to even, and real GDP grew 2.9% that year.⁹ The 2020 case shows the limit of any forecast: a pandemic isn't in the economic data until it arrives.

2022 to 2026: the signals that flashed

No recession had been dated as of October 2026.¹⁰ The National Bureau of Economic Research dates recessions well after the fact, so that could change. Either way, the period shows how several respected signals can point the same way at once and still be early, or wrong.

Key takeaways

• Leading indicators tend to turn before the economy. The Conference Board's index combines ten of them, from jobless claims and permits to stock prices and expectations.
• Building permits peaked more than two years before the 2008 recession, in line with housing's record as an early warning.
• The Sahm rule has caught every recession since 1960, usually within four months of the start, with false signals in 1976 and 2024.
• Credit spreads and consumer sentiment show stress but have mixed records as early warnings.
• Forecasters put the odds well under even on the eve of several recessions, and near even in 2023, when none followed.
• From 2022 to 2026, several signals flashed and no recession had been dated by October 2026.

Check your understanding

The unemployment rate's three-month average is 4.3%. Its lowest three-month average in the past year was 3.9%. Has the Sahm rule been triggered?

1. No: the rise is 0.4 point, below the 0.5 trigger.
2. Yes: any rise in unemployment triggers the rule.
3. Yes: an unemployment rate above 4% triggers it.

Why is the Sahm rule better described as a fast confirmation than a forecast?

1. It has never once triggered in an actual recession.
2. It's based on stock prices, which are too noisy.
3. It usually triggers a few months into a recession.

What's next

That completes the lessons of the Macroeconomics module. Practice: Macroeconomics puts them to work with problems on GDP, money, inflation, jobs, the Fed's tools, and the signals in this lesson.