WagerMintsCalculators
Free prediction market and gambling tax calculators
Every calculator on WagerMints. All free, no account, and nothing you enter is stored.
Last reviewed October 27, 2026
- Full report from your trades: Upload a Kalshi export or paste a polymarket.com wallet. Every trade, all four methods, the forms filled in.
- Prediction market tax calculator: A quick estimate from two numbers: what your winning and losing trades added up to.
- Kalshi tax calculator: The quick estimate for Kalshi, with all four methods available.
- Polymarket tax calculator: The quick estimate for polymarket.com or Polymarket US.
- Gambling loss calculator (2026): What the new 90% rule and the standard deduction do to a gambler's losses.
- Won money?: What you keep from a winning year under each method.
- Lost money?: What a losing year is worth: this year, carried forward, or carried back.