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 6%. Polymarket's broader version, with looser resolution language, prices 7%. Both have collapsed from the double digits they carried in June, and with four and a half months left there is very little runway for an NBER-dated 2026 recession to begin, be observed, and be declared.

The 2027 book tells a different story: 31%. That is a five-fold step up across a single calendar boundary, on a contract that settles in January 2028. The market is not saying the expansion is safe; it is saying the risk has been pushed past the horizon of the contract everyone was watching.

The quarter-of-start Categorical has effectively stopped trading—every remaining leg is a past quarter that never happened, with Q1 2026 at 8.5% as the highest surviving bid and zero volume across the whole book. Read it as a stale artifact rather than a live view.

The step change, priced directly. Kalshi's NBER-specific binaries at both horizons: 6% for a recession starting in 2026, 31% 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 one-point gap—6% against 7%—is roughly the value the market puts on resolution-language risk, and it has stayed within a point or two all year. When these two diverge meaningfully, it is usually the definition moving rather than the economy.

The quarter-of-start Categorical is the timing view in principle; in practice every leg now refers to a quarter that has already passed without a declaration, and nothing has traded 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.

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 September decision is the policy response function. Both are covered in depth in the jobs and FOMC workspaces—here they serve as the sanity check on a 6% print.

• 6% now, 31% next year. The single most informative number pair on this page. The market has not decided the cycle is over—it has decided 2026 is not the year, and it has moved the risk into a contract with four more quarters of runway.
• Open interest tells you where the conviction is. The 2026 binary holds $888,056 of standing position against $81,767 on 2027. Most of the money on this page is committed to a question that is nearly resolved.
• The one-point cross-exchange gap is the definition premium. Kalshi settles on an explicit NBER declaration; Polymarket's language is broader. A point of spread is the market's price for that difference, and it has been remarkably stable.
• The quarter Categorical is dead, not bearish. Every leg names a past quarter; nothing trades. Do not read Q1 2026 at 8.5% as a live forecast—it is an unwound book that nobody has bothered to close.
• 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 6% is not lower.