What is a recession? Meaning, indicators and how to check if we are in one

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A recession is a significant decline in economic activity that spreads across the economy and lasts more than a few months. In the United States the official dates come from the National Bureau of Economic Research (NBER), and as of October 6, 2026 its chronology shows no business-cycle peak after the April 2020 trough, which means no new US recession has been dated since the COVID recession.

That short answer hides a lot. The popular definition (two quarters of falling GDP) is not the one the NBER uses, the UK talks about recessions differently, and recessions are only confirmed months after they begin. This guide covers the definitions, the indicators people watch, and where to find the official numbers yourself.

What does recession mean, officially?

The NBER's Business Cycle Dating Committee defines a recession this way: "a significant decline in economic activity that is spread across the economy and lasts more than a few months." The committee keeps a chronology of US business cycles. It does not declare recessions in real time. It picks two months: the peak, when activity tops out, and the trough, when it bottoms. The recession is the period between them, and the expansion is the period from a trough to the next peak.

The definition has three parts, and the committee's FAQ names them depth, diffusion and duration. A decline has to be large, it has to reach many industries, and it has to last. The committee says that "extreme conditions revealed by one criterion may partially offset weaker indications from another." That is why the 2020 downturn counted. It lasted only two months, from February to April 2020, but the NBER judged that the drop in activity was so great and so widely diffused that it should be classified as a recession even if brief.

The NBER is a private, nonprofit research organization. Its dates are the standard reference for US recessions, and there is no separate government announcement that a recession has started.

What does the NBER look at to date a recession?

The committee does not use a fixed formula or fixed weights. According to its FAQ, the monthly measures it looks at include:

• real personal income less transfers (income from work and investments, adjusted for prices);
• nonfarm payroll employment, from the BLS survey of employers;
• employment measured by the household survey;
• real personal consumption expenditures;
• manufacturing and trade sales, adjusted for price changes;
• industrial production.

For quarterly data it looks at real GDP and gives equal weight to real gross domestic income (GDI), which measures the same economy from the income side. The FAQ notes that the gap between the two mattered in the recessions of 2001 and 2007-09.

Because the committee waits until the data leave little doubt, announcements come late. The fastest it has moved was four months: the February 2020 peak was announced on June 8, 2020. The slowest was 21 months: the March 1991 trough was announced on December 22, 1992. By the time a US recession is official, it has sometimes already ended.

Is a recession two quarters of negative GDP?

Only as a rule of thumb. Two consecutive quarters of falling real GDP is the shorthand used by many news reports, and it is easy to check. The NBER explicitly does not use it. Its FAQ says: "Most of the recessions identified by our procedures do consist of two or more consecutive quarters of declining real GDP, but not all of them."

The rule can miss in both directions. A recession can show up in jobs and income before GDP has fallen twice, and GDP can dip for two quarters while employment keeps growing. GDP figures are also revised, sometimes by enough to turn a small fall into a small rise.

How is a recession defined in the UK?

In the UK, the two-quarter rule is the common usage. The Office for National Statistics (ONS) describes it as the concept of a "technical" recession: "two or more consecutive quarters of contracting output." The ONS adds that most experts also weigh the depth, diffusion and duration of the fall, the same three tests the NBER uses.

The most recent example came in the second half of 2023. In its first estimate, published February 15, 2024, the ONS reported that UK GDP fell 0.3% in the fourth quarter of 2023 after a fall of 0.1% in the third quarter. In the current ONS data (release of September 30, 2026), those two quarters stand at -0.2% and -0.3%, so the two-quarter fall is still there after revisions.

So when people search "is the UK in recession", the usual test is simple: has quarterly GDP fallen twice in a row? On the latest ONS figures it has not. GDP grew 0.6% in the first quarter of 2026 and 0.5% in the second quarter.

How long do recessions usually last?

The NBER table of US business cycles shows that contractions since 1945 have averaged 10.3 months, against 17.0 months over the whole record since 1854. Expansions have been far longer.

The expansion that began in April 2020 had run 78 months by October 2026 without a peak being named. The contraction of 1929-33 lasted 43 months (the longest in the NBER record is 1873-79, at 65 months); our page on recession vs depression explains why that one is called a depression.

Which recession indicators do economists watch?

No single indicator calls recessions reliably. These four are the ones most often quoted, and each has an official public source.

The yield curve

When short-term Treasury yields rise above long-term yields, the yield curve is said to be inverted. Inversions came before each of the US recessions since the late 1970s, but the longest inversion on record, from July 2022 to August 2024, has not been followed by an NBER-dated recession as of October 2026. Our guide to the inverted yield curve covers the full record.

Unemployment and the Sahm rule

Unemployment tends to rise quickly once a recession starts. The Sahm rule, published by the St. Louis Fed on FRED as the series SAHMREALTIME, turns that pattern into a signal. FRED describes it as signaling the start of a recession "when the three-month moving average of the national unemployment rate (U3) rises by 0.50 percentage points or more relative to the minimum of the three-month averages from the previous 12 months."

The rule has its own miss to explain. The real-time indicator reached 0.53 in July 2024 and 0.57 in August 2024, above the threshold, yet the NBER has not dated a recession in that period. By September 2026 the indicator stood at 0.00, with unemployment at 4.2%.

Initial jobless claims

Each week the Labor Department's Employment and Training Administration publishes the number of new claims for unemployment insurance. Because it arrives weekly, it is one of the fastest signs of layoffs. FRED's series ICSA showed 197,000 seasonally adjusted initial claims in the week ending September 26, 2026. A sustained climb matters more than a single week's number.

GDP

GDP is the broadest measure but also one of the slowest. The Bureau of Economic Analysis (BEA) publishes several estimates for each quarter and revises them again later. The third estimate for the second quarter of 2026, released September 30, 2026, showed real GDP growing at an annual rate of 2.2%.

How can I check whether we are in a recession?

You can look at the same releases the forecasters use. All of them are free.

1. US jobs (BLS, Employment Situation). Released monthly. The September 2026 report, released October 2, 2026, showed nonfarm payrolls up 29,000 and the unemployment rate at 4.2%; the BLS said both "changed little."
2. US GDP (BEA). The next release is scheduled for October 29, 2026. Watch whether real GDP and real GDI are both falling, and whether the fall is broad.
3. UK GDP (ONS). The ONS publishes monthly GDP estimates and quarterly figures. Two negative quarters in a row is the UK test most people use.
4. The NBER business cycle page. If the committee names a new peak, it appears there and in its announcements list. As of October 6, 2026 the latest peak listed is February 2020.
5. The Sahm rule on FRED. It updates on the day of the jobs report.

None of these tells you what will happen next, and this site does not forecast. They tell you what the economy did in the last month or quarter, and the NBER's judgment arrives after that. If you are asking what a recession would mean for your own savings or investments, the answer depends on your situation; the SEC's investor education site, Investor.gov, in the US and MoneyHelper in the UK are neutral places to start.

How do recessions affect the stock market?

Stock prices usually fall before or during recessions, because investors price in lower profits. In 2020 the S&P 500 fell 33.9% from February 19 to March 23, while the NBER recession ran from February to April. In 2022 the S&P 500 fell 25.4% from its January peak without any NBER-dated recession, which shows that a bear market and a recession are separate things. Our list of stock market crashes shows how each major fall lined up with the business cycle, and the 2008 financial crisis page covers the longest postwar recession.

Questions readers ask