Skip to main content
  • Gambling 101

    70 free guides across 10 categories

  • Getting Started

    New to gambling? Start here

  • Learning Paths

    6 guided curricula, beginner to pro

  • Sports Betting

    Odds, lines, arbs & value betting

  • Casino Table Games

    Blackjack, roulette, craps & baccarat

  • Gambling Math

    EV, house edge, probability & Kelly

  • Glossary

    78 gambling terms explained

  • All Practice Games

    All 25 games

  • Blackjack Trainer

    Basic strategy practice

  • Roulette Practice

    European & American

  • Video Poker

    Jacks or Better & more

  • Craps Simulator

    Dice rules practice

  • Baccarat

    The elegant card game

  • Betting Tools Hub

    Free tools plus clearly staged Pro previews

  • Universal Bet Calculator

    Arbs, modeled value, holds, price comparison, and parlays across supported books

  • Parlay Inspector

    Fair odds, hidden vig, cashout checks, and saved slips

  • Cashout Calculator

    Check whether a cashout offer is fair before accepting

  • Boost EV Calculator

    Check odds boosts, promo boosts, stake caps, and promo terms

  • Playthrough Planner

    Plan rollover, contribution rates, expiry pace, and caps

  • Calculators

    10 free betting & casino calculators

  • Hold & Vig Calculator

    Find the hidden cost inside a market

  • Free Bet Converter

    Estimate free-bet value

  • RNG Strategy Lab

    Build & test any betting strategy

  • Provably Fair Verifier

    Verify crypto casino game fairness

  • Live Odds Staged

    Sign up for access when cached odds coverage is reliable

  • All Platforms

    Browse the full platform directory

  • Sportsbooks

    Licensed sports betting

  • Casinos

    Online, sweepstakes & crypto

  • Daily Fantasy Sports

    DraftKings, FanDuel & more

  • Poker Rooms

    Online poker sites

  • Pick'ems

    PrizePicks, Underdog & more

  • Prediction Markets

    Kalshi, Polymarket & more

  • State Platform Guides

    State-aware platform context

  • Canada Platform Guides

    Province-aware Canada hub

Join Free
BonusBell

Explore gambling tools, platform reviews, bonus tracking, practice games, and calculators across 10 market categories and 407 tracked platforms with state-aware availability.

X

One email per week. Unsubscribe anytime.

Explore

  • Learning Guides
  • Practice Games
  • Tools
  • Calculators
  • Explore Platforms
More
  • Universal Bet Analyzer
  • Compare Platforms
  • State Platform Guides
  • Canada Platform Guides
  • RNG Strategy Lab
  • Provably Fair Verifier

Company

  • About Us
  • Editorial Standards
  • Review Methodology
  • Why BonusBell
  • Business Inquiries
  • Responsible Gaming
  • Contact
  • Help Center
  • Changelog

Legal

  • Terms of Service
  • Privacy Policy
  • Data Policy
  • Disclaimer
  • Sitemap

21+ Play Responsibly | BonusBell is not a gambling operator and does not offer financial advice. Everything offered is for entertainment purposes only.

Have a gambling problem? Call 1-800-MY-RESET or visit ncpgambling.org/chat

Home/Glossary/Event Contract
All terms
General
beginner

Event Contract

What is Event Contract?

A binary contract that pays $1 if a specific event occurs and $0 if it does not.

Last updated:February 22, 2026

Event contracts are the building blocks of prediction markets. Each contract is tied to a specific, verifiable outcome — "Will Team X win the championship?" or "Will candidate Y win the election?" Contracts are binary: they settle at exactly $1.00 (Yes) or $0.00 (No). On platforms like Kalshi and Polymarket, you can trade these contracts before settlement, creating a dynamic market where prices fluctuate based on new information. The CFTC regulates event contracts on US platforms.

In practice

A Kalshi event contract on CPI coming in above 3.2% for December 2025 trades at $0.38 YES. A trader modeling inflation at 45% buys 1,000 contracts for $380. If December CPI prints 3.3%, YES resolves at $1, paying $1,000 — a $620 profit (163% ROI). If CPI prints 3.1%, the position is a $380 loss.

Event contracts are binary, cash-settled, and regulated by the CFTC on Kalshi. Unlike sports betting, they cover economics, politics, weather, and cultural events. They are legal nationwide in the US (as commodities contracts) and attract hedge funds, traders, and political forecasters. The key risk is resolution ambiguity — always read the fine-print resolution criteria before buying. A contract on "Will GDP exceed 2.5%" may use advance, second, or third estimates, and each reading can resolve differently.

Example

<p>A Kalshi <strong>event contract on CPI coming in above 3.2% for December 2025</strong> trades at <strong>$0.38 YES</strong>. A trader modeling inflation at 45% buys 1,000 contracts for $380. If December CPI prints 3.3%, YES resolves at $1, paying $1,000 — a $620 profit (163% ROI). If CPI prints 3.1%, the position is a $380 loss.</p><p>Event contracts are binary, cash-settled, and regulated by the <strong>CFTC</strong> on Kalshi. Unlike sports betting, they cover economics, politics, weather, and cultural events. They are legal nationwide in the US (as commodities contracts) and attract hedge funds, traders, and political forecasters. The key risk is <strong>resolution ambiguity</strong> — always read the fine-print resolution criteria before buying. A contract on "Will GDP exceed 2.5%" may use advance, second, or third estimates, and each reading can resolve differently.</p>

Related Terms

Prediction Market

A market where you trade contracts on real-world event outcomes, with prices reflecting crowd probability estimates.

Contract Price

The current trading price of a prediction market contract, reflecting the crowd's probability estimate.

Implied Probability

The probability of an outcome as implied by the betting odds, including the bookmaker's margin.

Frequently Asked Questions

What does Event Contract mean in gambling?

A binary contract that pays $1 if a specific event occurs and $0 if it does not.

What is an example of Event Contract?

<p>A Kalshi <strong>event contract on CPI coming in above 3.2% for December 2025</strong> trades at <strong>$0.38 YES</strong>. A trader modeling inflation at 45% buys 1,000 contracts for $380. If December CPI prints 3.3%, YES resolves at $1, paying $1,000 — a $620 profit (163% ROI). If CPI prints 3.1%, the position is a $380 loss.</p><p>Event contracts are binary, cash-settled, and regulated by the <strong>CFTC</strong> on Kalshi. Unlike sports betting, they cover economics, politics, weather, and cultural events. They are legal nationwide in the US (as commodities contracts) and attract hedge funds, traders, and political forecasters. The key risk is <strong>resolution ambiguity</strong> — always read the fine-print resolution criteria before buying. A contract on "Will GDP exceed 2.5%" may use advance, second, or third estimates, and each reading can resolve differently.</p>

Top Sportsbooks

Editorial platform cards with source-backed notes. Verify current terms on the operator site before acting.

FanDuel Sportsbook

Best Overall Sportsbook

9.6

Best for: overall experience and ease of use

View details

DraftKings Sportsbook

Best for Promotions & Odds Boosts

9.5

Best for: daily promotions and prop betting

View details

BetMGM Sportsbook

Best for Odds Quality

9.2

Best for: sharp odds and casino crossover

View details

Save the result and come back to it

Use the manual tools now, then save slips, bonuses, bets, strategies, and reminders with a free account. Cached-odds automation is staged.

Sign Up Free
Back to Glossary