NBER recession
Updated November 10, 2026
An NBER recession is a significant, broad, sustained decline in US economic activity, dated retrospectively by the NBER Business Cycle Dating Committee. NBER does not use the popular “two consecutive quarters of GDP decline” rule.
Headlines in Q2 say “GDP fell two quarters in a row—recession.”
- After the headlinesThe contract stays open
The NBER recession contract stays open: the committee weighs payroll employment, industrial production, income, and spending together: depth, diffusion, and duration are “somewhat interchangeable.”
- Months later, or neverNBER makes the call
A recession call might arrive months later, or never, if the decline is shallow or narrow.
Price the definition the contract names: for example, the NBER declaration, or two consecutive negative quarters of real GDP.
Recession contracts define a recession in their own rules, for example NBER’s dating or two consecutive negative quarters of real GDP, and the contract’s definition is the one that decides it.
NBER’s process is qualitative judgment on official data, not a fixed formula you can set once and ignore.
Peaks, troughs and the announcement date
NBER dates turning points in the business cycle. A peak is the month activity tops out, and a trough is the month it bottoms. The recession is the period from the peak to the trough.
Because the committee works retrospectively, it tends to identify a peak a number of months after it has occurred. That leaves two dates that a contract can key on:
- The dated peak. The month NBER eventually names as the start of the recession, which is often well in the past by the time it is announced.
- The announcement. The day the committee publishes its determination.
A contract that asks whether NBER declares a recession by December 31 resolves on the announcement. If the committee later dates a peak to a month inside that window but announces it in the following year, that contract resolves no. A contract keyed to the dated peak could resolve yes on the same facts. Reading which date the rule text uses is part of reading the resolution source.
How NBER differs from the two-quarter rule
The two-quarter rule uses one series, quarterly GDP, and applies a fixed test. NBER looks at monthly indicators across the economy and weighs how deep, how widespread and how long the decline is.
That difference runs both ways. NBER can date a recession without two straight quarters of falling GDP, if the decline in employment, income and spending is deep enough. It can also decline to call one after two negative GDP quarters, if the drop is shallow or confined to a narrow part of the economy. For a contract that names NBER, the GDP headline is one input traders watch, and the committee's determination is what settles it. Economic data markets covers how this sits alongside CPI, jobs and Fed contracts.
FAQ
Who officially declares a US recession?
The Business Cycle Dating Committee of the National Bureau of Economic Research, a private nonprofit research organization. Its determinations are the standard reference for US recession dates.
Is two quarters of negative GDP a recession?
It is a popular rule of thumb, and a contract’s rules can use it as the definition. NBER does not use it, and a recession contract that names NBER settles on the committee's call, whatever the GDP figures show.
How long does NBER take to declare a recession?
There is no fixed schedule. The committee waits until the data make the turning point clear, which typically means a number of months after the peak it identifies.