Recession Risk — 2026 and 2027

The probability of an NBER-declared US recession by year-end 2026 was the defining macro contract of the spring. It is now close to settled, and the interesting book has moved out a year.

Kalshi's 2026 binary trades at 3.5%, down from 6%, on $1,732 of 24-hour volume against $954,501 of open interest—almost all of the conviction on this page is committed to a question that is nearly resolved. With under three months left in the year there is very little runway for an NBER-dated 2026 recession to begin, be observed and be declared.

The 2027 book prices 18.5%, down from 25% but still more than five times the 2026 number, on a contract that settles in January 2028. It is also the busiest recession book on the page, at $39,041 in a day. The market is not saying the expansion is safe; it is saying the risk sits past the horizon of the contract everyone was watching.

The policy backdrop has settled too. The Fed raised rates 25bp to 3.75–4.00% on September 16, and Kalshi's October meeting, a coin flip on a second move three weeks ago, now prices a hold at 83.5% against a hike at 15.5%. Both recession books have priced lower since.

The step change, priced directly. Kalshi's NBER-specific binaries at both horizons: 3.5% for a recession starting in 2026, 18.5% for one starting in 2027. Same resolution source, same methodology, twelve months apart.

Kalshi's NBER-specific 2026 binary next to Polymarket's broader US-recession binary. The gap is 3.5% against 6.5%—three points, from four at the last review, with both legs lower. Polymarket's looser resolution language is worth more when the definition matters, and that is still the cleanest explanation for the spread. Beside it, Kalshi's IMF global-recession contract sits at 5% on $10 of daily volume.

The quarter-of-start Categorical is the timing view in principle; in practice its leading legs name quarters that have already passed without a declaration. The top leg, Q1 2026 at 5.95%, took the board's only trading: $21 in twenty-four hours. Beside it, Kalshi's multi-country book on which economies enter recession before 2027—the cleanest read on whether US risk is idiosyncratic or global. United Kingdom leads at 14.05%, ahead of Japan at 6.5%, and nothing traded on it in a day.

Recession odds do not move in isolation. The initial-claims and unemployment books reprice weekly and are the highest-frequency inputs into this question; the Fed's October meeting is the policy response function, and Kalshi now prices a hold at 83.5% against a 25bp hike at 15.5%, on $226,962 in a day. Both are covered in depth in the jobs and FOMC workspaces—here they serve as the sanity check on a 3.5% print.

• 3.5% now, 18.5% next year. The most informative number pair on this page, both lower than the 6% and 25% of three weeks ago. The market has not decided the cycle is over; it has decided 2026 is not the year and moved the risk into a contract with four more quarters of runway.
• The cross-exchange gap is three points. 3.5% on Kalshi against 6.5% on Polymarket, from four. That spread is the price of resolution language, and it moves when the macro path does.
• Open interest is where the conviction is; the trading has moved on. The 2026 binary holds $954,501 of standing position against $348,219 on 2027, but the day's volume ran the other way: $39,041 on 2027 against $1,732 on 2026.
• The quarter Categorical is dead, not bearish. Its leading legs name past quarters and it turned $21 in a day. Read it as an unwound book, not a forecast.
• The declaration lag is the mechanical constraint. NBER dates recessions retrospectively, often a year or more after the trough. A 2026 recession would essentially have to have already started for the 2026 contract to pay, which is most of why 3.5% is not lower.