Both charge a trading fee that is highest on contracts priced near 50 cents. Kalshi charges it on every executed trade and shows it in the order ticket. Polymarket US has charged a taker fee since October 2026, about $1.74 per 100 contracts at 50 cents. Orders that rest on the book pay no fee; rebates on them are limited to very high-volume traders since October 19, 2026. Last checked October 3, 2026.
Yes, your Kalshi and Polymarket profits are taxable, federally and in California. The IRS hasn't said how event contracts are classified yet. Here's what's settled, what isn't and what to keep.
California's water year runs October through September. The first major storms typically arrive in November. Here's how prediction markets cover LA and SF monthly rainfall, and what to actually do with that.
Camps are open and Week 1 is a month away. Win-total markets are at their most liquid right now. Here's how California fans can trade the Rams and Chargers' 2026 seasons before kickoff.
Memorial Day through Labor Day is the highest-stakes window in Hollywood. Kalshi and Polymarket cover opening weekend grosses for major releases. Here's how to trade the summer movie season from California.
The 78th Primetime Emmy Awards air Monday, September 14 on NBC: five weeks out, with FYC voting underway. Kalshi and Polymarket cover the major categories. Here's the California viewer's guide to trading TV's biggest night.
The Kings, Sharks, and Ducks define California hockey. The Stanley Cup Final runs late May into June. Here's how California fans can take a position on the entire NHL postseason through prediction markets.
Wildfire season runs roughly May through October. Kalshi and Polymarket both list climate event contracts: including some that touch California fire activity. Here's the honest read on what's tradable and what isn't.
The Federal Open Market Committee meets June 16-17. Kalshi's Fed contracts have become the cleanest read on rate expectations available to retail traders. Here's how to trade the meeting from California.
The Dodgers entered 2026 as defending champions and World Series favorites. The regular season runs through September; October is where prediction markets light up. That run ended in a 4-0 NLCS sweep by the Brewers.
Game 1 of the NBA Finals is June 3. Whether the Lakers, Warriors, or neither make it through, California fans have one legal path to take a real position, federally regulated prediction markets. Here's the playbook.
Gavin Newsom is termed out. The June 2 primary narrows a crowded field to two; the November general decides who runs one of the world's largest economies. Here's how California traders can take a position on the race.
