Guide
How does Kalshi work? Contracts, payouts and fees explained
What a Kalshi contract is, how prices become probabilities, how a $1 payout works, what the fees are and how Kalshi makes money, with worked examples.
4 min read
Blog
Guides
Step-by-step explainers for reading odds, choosing a platform and managing risk.
Guide
How does Polymarket work (and how does it make money)?
Shares, prices, payouts and the order book on Polymarket, the difference between the US app and the global site, and where Polymarket’s revenue comes from.
4 min read
Guide
Is Kalshi legal in your state? Sports contracts, lawsuits and age rules (2026)
Kalshi is federally regulated and available across the US, but its sports contracts are fighting state gaming regulators in court. Here is where things stand and how to check your state.
4 min read
Guide
Polymarket fees vs Kalshi fees: what you actually pay (2026)
Both platforms now charge taker fees shaped by price × (1 − price). Worked examples at 10¢, 50¢ and 90¢, maker rebates, deposit and withdrawal costs, and how to pay less.
4 min read
Guide
How do prediction markets work? A plain-English guide
Prediction markets turn questions about the future into prices you can trade. How the prices work, how markets resolve, why they are often accurate, and how to start.
4 min read