Guides

Plain-English, fact-checked answers about trading prediction markets.

Kalshi vs Polymarket (2026): fees, markets, availability, and which is cheaper

Kalshi vs Polymarket in 2026: fee formulas side by side, who can use each platform in the US, how funding works, and which is cheaper at common prices.

Kalshi fees explained: the exact formula, table, and worked examples

Kalshi's trading fee formula, maker vs taker fees, series multipliers, rounding, and deposit fees, with worked examples at common prices.

Polymarket fees explained (Polymarket US and international)

Polymarket US vs Polymarket.com fees: taker formula, category rates, maker and taker rebates, combos, and funding costs, with worked examples.

How prediction markets work: prices, contracts, and settlement

Beginner's guide to prediction markets: what a $1 event contract is, how prices map to probability, and how fees and settlement work, with an example.

Is Kalshi legal? State-by-state status and the court fight

Is Kalshi legal in your state? Kalshi's federal status, the circuit split over sports contracts, CFTC suits against states, and the Supreme Court path.