KALSHI Rules: How the Platform Works for Traders
Kalshi rules govern every binary event contract on the Kalshi platform. As a federally regulated DCM (Designated Contract Market) under the CFTC, Kalshi defines how YES and NO contracts settle to $1.00 or $0.00 and how each market’s resolution source determines outcomes. This article breaks down the core Kalshi rules traders need to know, from contract structure to settlement and eligibility, and it highlights how KalshiArb’s tools can help you identify edge opportunities within those rules. If you’re evaluating Kalshi for arbitrage, understanding these rules is essential to assess risk, timing, and potential spreads.
What are Kalshi rules and where do they come from?
Kalshi rules are the framework that defines how every event contract operates on the Kalshi exchange. They specify that each market is binary with a YES and a NO side, and that settlements are in USD, at $1.00 for the winning side and $0.00 for the losing side. The rules are under the oversight of Kalshi as a CFTC-regulated DCM, with settlement rules tied to published data sources such as official tallies or authoritative releases. Traders should also note that the platform enforces order types, price ticks, and position limits per market, all designed to keep trading fair and transparent.
How YES/NO contracts settle under Kalshi rules
Under Kalshi rules, a YES contract pays out $1.00 if the stated condition is true at resolution, otherwise $0.00. The NO contract behaves symmetrically. The sum of YES and NO prices in a fair-value market is anchored near $1.00, with each side priced in cents between $0.01 and $0.99. Settlement is determined by Kalshi’s resolution rule and designated source, not by an external oracle, and all payouts are made in USD through Kalshi Klear. This settlement framework creates defined edge opportunities when both sides are priced under $1.00.
Trading mechanics you should know under the rules
Trading on Kalshi uses a centralized order book with standard limit and market orders. Prices move in 1-cent ticks, and minors like self-trade prevention and post-only/IOC flags help manage execution. A common arbitrage edge arises when best-ask YES plus best-ask NO is less than $1.00, allowing you to buy both legs and lock in a risk-defined profit after fees. Remember that per-contract fees apply to both sides, and there are per-market limits on position sizes you should verify in the market data before placing orders.
Regulatory and geographic considerations under Kalshi rules
Kalshi operates as a US-based, CFTC-regulated platform, and its rules reflect compliance with US law and market regulations. Eligibility is limited to U.S. residents who meet state requirements and KYC standards, with certain sports contracts facing state-level restrictions that change over time. The platform settles in USD and does not use on-chain transactions or crypto settlements. If you’re outside a supported jurisdiction, or your state blocks certain event types, KalshiArb still promotes compliance-first trading within Kalshi’s published rules.
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FAQ
- What exactly are Kalshi rules?
- Kalshi rules define the operation of binary event contracts on Kalshi, including YES and NO sides, USD settlement, and how resolution sources determine outcomes. They cover pricing, order behavior, and eligibility to trade.
- How does settlement work on Kalshi?
- Settlement is based on the market’s written resolution rule and a designated source. If YES resolves true, YES payouts are $1.00 per contract; NO payouts, if true, are $1.00 for NO. Payouts are in USD and determined by Kalshi Klear.
- Are there geographic or regulatory restrictions I should know?
- Yes. Kalshi is US-based and CFTC-regulated, with eligibility rules by state and jurisdiction. Some regions restrict certain sports or event contracts, and users must comply with KYC and funding requirements.
- What edge opportunities do Kalshi rules enable for arbitrage?
- Edge opportunities arise when the best-ask YES and best-ask NO prices sum to less than $1.00, allowing you to buy both sides for a near-certain profit after fees. Edge also exists in combinatorial markets and endgame scenarios near settlement, but always within the defined Kalshi rules.