This market will resolve to "Yes" if the United States formally declares war on Iran through an act of Congress between market creation and the specified date, 11:59 PM ET. Otherwise, this market will resolve to "No." To qualify, Congress must pass a formal declaration of war, consistent with its constitutional authority under Article I, Section 8. Authorizations for the use of military force (AUMFs), executive orders, presidential statements, or military actions do not qualify unless accompanied by a formal declaration of war enacted by Congress and signed into law. The resolution source will be a clear consensus of credible reporting.
Trade on the latest odds for Will the US officially declare war on Iran by...? on PolyGram, a prediction market platform where you can buy and sell outcome shares. Current market prices reflect the crowd's real-time probability estimate for this event.
Market outcomes
| December 31 | 8% YES | 93% NO |
| March 31 | 0% YES | 100% NO |
| April 30 | 0% YES | 100% NO |
Polymarket settles political markets from authoritative sources — Associated Press race calls for US elections, the relevant electoral commission for national votes, and the UMA optimistic oracle for contested or ambiguous resolutions. Prices you see are probabilities derived from thousands of traders deploying real capital; they update in real time as new polls, debates, endorsements and news hit the tape. PolyGram surfaces the same order book with an email-first login and USDC settlement on Polygon.
Resolution is handled by the UMA optimistic oracle on Polygon. A proposer submits the outcome, a two-hour dispute window opens, and if no one stakes a counter-claim the payout is final. Contested outcomes escalate to UMA token-holder voting. Payouts clear in USDC to the winning side.
Resolution is handled by the UMA optimistic oracle on Polygon. A proposer submits the outcome, a 2-hour dispute window opens, and if uncontested the payout is final. Contested outcomes escalate to UMA token holders.
This prediction market is scheduled to close on 31 December 2026. After the resolving event occurs, settlement typically clears within 24 hours once the UMA optimistic oracle confirms the outcome. All payouts are in USDC on the Polygon network.
To trade on this prediction market, create a free PolyGram account at polygram.ink, deposit USDC via Polygon, and place a YES or NO order on the outcome you believe in. You can learn more on our how-it-works page. Your maximum loss is limited to your stake — there is no leverage or margin.
When the outcome is determined, winning YES shares pay out $1.00 each in USDC, while losing shares pay $0. Settlement is handled by the UMA optimistic oracle on Polygon — a proposer submits the result, a two-hour dispute window opens, and if uncontested, payouts are distributed automatically. You can withdraw your winnings to any Polygon wallet.
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