Government Shutdown Odds: The Markets on October 1, 2026

Government shutdown odds used to mean a pundit's gut. Now they mean a price. Kalshi and Polymarket both run real-money markets on whether the federal government is shut down on October 1, the first day of the fiscal year, and the price of those contracts is the closest thing to a live probability that exists. Here is where they stand, what they mean, and why the number is so low this year.

What are the government shutdown odds right now?

As of September 12, 2026: Kalshi's contract on a shutdown on October 1 last traded at 2¢, with about $300,000 of open interest. Polymarket's 'government shutdown by October 1' market sits at about 1¢ on far less volume ($15,000 over the life of the market), and its 'appropriations lapse on October 1' market at about 1¢. A contract at 2¢ pays $1 if the government shuts down, so $1 buys 50 contracts and returns $50 on a shutdown. These prices move every hour; the live versions, both exchanges side by side with 90 days of history, are on our sister site's government shutdown odds tracker.

Why so low?

We do not know, and the honest answer is that nobody does: a price is a summary of what traders believe, not an explanation. What the price says is that the people risking money expect appropriations or a continuing resolution to pass before midnight on September 30. It is worth noticing what it does not say. It does not say there will be no shutdown in 2026. Kalshi's separate market on how many distinct shutdowns happen before January 1, 2027 prices two or more at 62%, three or more at 31%, four or more at 6%. Read together: the market thinks October 1 is safe and a later deadline is not.

What counts as a shutdown?

Kalshi's rules are specific: the market resolves Yes if the federal government is at least partially shut down due to a lapse in appropriations at 10:00 AM ET on October 1, 2026. The examples in the rules are an OMB directive telling agencies to execute orderly shutdown plans, or OPM posting a partial-lapse operating status. A technical lapse that is cured before the morning does not count, and a stopgap passed at 11:58 PM counts as no shutdown. If you are trading it, that timestamp is the whole contract.

How last year's shutdown traded

The 2025 shutdown is why these markets exist at their current size. Polymarket's market on whether the government would shut down that Saturday did about $157 million in volume, and its markets on when the shutdown would end did another $70 million. Kalshi ran the same book in dollars. Both exchanges now open a new October 1 market every summer, and both open new deadline markets whenever Congress passes a short-term continuing resolution, which is why the tracker follows the deadline rather than a date.

How to read the price

• 2¢ is not zero. Markets price near-certain outcomes at 1¢ to 3¢ because someone always wants the lottery ticket and the fee structure makes the last penny expensive to sell.
• Open interest matters. $300,000 on Kalshi means a real crowd. $15,000 on Polymarket's version means a small one; a single large order could move it.
• Watch the gap. When Kalshi and Polymarket disagree by more than a few points on the same deadline, one of them is about to be right. They agree today.
• Watch the deadline markets, not the date. A continuing resolution moves the risk to a new date, and the exchanges list a new contract for it within days.

Where to bet on a government shutdown

Kalshi (CFTC-regulated, US, age-gated, not available in every state) lists the October 1 contract, the number-of-shutdowns market, and a shutdown-length market when one is under way. Polymarket US lists shutdown markets on its app; the larger Polymarket global exchange does not serve US residents. Robinhood and Coinbase carry Kalshi's contracts inside their own apps. Our guide to apps where you can bet on anything has the ages, states and fees for each.

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