Markets Prediction
Get Promotion Codes
Jump toBest PlatformsLive Odds
Glossary/Resolution & Settlement/Resolution Criteria

Resolution Criteria

Resolution criteria are the precise rules written into a prediction market contract that define exactly what outcome must occur, what source will confirm it, and how edge cases will be handled.

Updated June 24, 2026Resolution & Settlement
TL;DR
Resolution criteria are the rulebook for a market. They define exactly what YES means, what NO means, and what happens when reality does not fit neatly into either box.

Key Points

Resolution criteria specify the resolution source, the exact condition for YES and NO, and fallback rules for ambiguous situations.
Poorly written criteria are the leading cause of [[dispute-resolution]] escalations and [[invalid-market]] declarations.
On Kalshi, criteria are reviewed by the markets team before launch to ensure enforceability.
On Polymarket, criteria are described in plain English and interpreted by the [[uma-optimistic-oracle]] and its disputers.
Traders should always read the resolution criteria before buying shares, as contract wording can differ from intuitive expectations.

What Good Resolution Criteria Include

Robust resolution criteria answer three questions: what event defines YES, what Resolution Source will confirm it, and what happens in ambiguous scenarios. For example, a market asking whether the Federal Reserve will raise rates at a specific meeting would specify: YES resolves if the FOMC announces a rate increase of any amount at that meeting; NO resolves if rates are held or cut; the source is the official FOMC statement published on the Federal Reserve website; if the meeting is postponed past Market Expiry, the market resolves as Invalid Market. Each of these clauses removes a potential ambiguity that could otherwise trigger a Dispute Resolution proceeding. The more precisely the criteria define edge cases, the smoother Market Resolution will be.

How Criteria Affect Trading Decisions

Differences in resolution criteria between platforms covering the same event can produce entirely different outcomes. A market asking whether a candidate will win an election could differ between platforms based on whether it resolves on the night of the vote, on official certification, or on Electoral College confirmation. Traders who read criteria carefully can identify Mispricing when the market is being priced against the wrong probability. Resolution criteria also determine how a contract handles a tie, a postponement, or a technicality. Understanding criteria is particularly important when the Contract Price is near 50 cents, since that level often reflects genuine uncertainty about whether the criteria will be met, rather than uncertainty about the underlying event itself.

Related Terms

More in Resolution & Settlement

Find the best odds on every market

Compare live prices across Kalshi, Polymarket, and more — spot arbitrage and trade the sharpest line on any event.

Compare Markets