~52–55% · $520K liquidity
Will there be a US government shutdown in 2026?
Any funding-lapse shutdown in 2026 — Polymarket + Kalshi
Politics Prediction Markets
Will Washington shut down again in 2026? With the fiscal-year-2027 funding deadline looming on October 1 and the midterms in play, prediction markets price both the likelihood and the duration of a shutdown on Polymarket and Kalshi — often points apart. Mantis shows the sharpest line in one search.
Live cross-venue odds for shutdown likelihood, timing, and duration. Probability ranges reflect the cross-venue spread as of June 2026 — click any market for real-time quotes.
~52–55% · $520K liquidity
Any funding-lapse shutdown in 2026 — Polymarket + Kalshi
~27–30% · $280K liquidity
Begins before Election Day, Nov 3 2026
~22–25% · $220K liquidity
Duration market — extended standoff
Funding deadlines — chiefly October 1, 2026 for fiscal year 2027 — are the flashpoints. Shutdown probability climbs as a deadline nears without a deal and falls when a continuing resolution passes.
A narrow or divided Congress raises brinkmanship risk. With control of the House and Senate on the ballot in November 2026, both parties’ incentives around a shutdown shift — moving the markets.
Whether a shutdown happens and how long it lasts are separate bets. A brief lapse over a weekend is very different from a multi-week standoff — the duration market prices that tail directly.
Politics
House & Senate control — the backdrop to every shutdown fight
Macro
Debt ceiling & fiscal fights — closely tied to shutdown risk
Politics
Elections, geopolitics, policy — full politics prediction market index
As of June 2026, prediction markets put the probability of a US government shutdown at some point in 2026 around 52–55% on Polymarket, with Kalshi a few points lower. The next major funding deadline is the start of fiscal year 2027 (October 1, 2026), so shutdown risk tends to concentrate in the autumn. Mantis shows the live cross-venue spread.
Polymarket and Kalshi both list US government shutdown contracts as binary YES/NO markets. Kalshi is CFTC-regulated and US-legal for these event contracts; Polymarket offers global access. The same shutdown question often trades 2–4 points apart between the two — Mantis surfaces both prices and routes you to the better side.
A shutdown market resolves YES if a federal funding lapse forces a shutdown of non-essential government operations during the covered window. Duration markets (e.g. "lasts more than 10 days") resolve on the number of consecutive days the shutdown remains in effect, per official confirmation. Boundary definitions can differ slightly between venues, which is exactly where cross-venue gaps appear.
Shutdown probability is driven by appropriations negotiations, the partisan balance in Congress, and proximity to funding deadlines. Headlines from budget talks can move the market several points in a day, and with the 2026 midterms in play the politics are especially fluid. Mantis lets you watch the shutdown markets alongside the midterms hub to see how the two interact.