In this guide
Kalshi in the UK: The Problem
Kalshi operates under CFTC regulation as a US-based prediction market, restricting access exclusively to American residents through geographical blocking. British and other international users cannot establish accounts on the platform. For those in the UK seeking a comparable alternative, PolyGram delivers equivalent functionality alongside an expanded catalogue of available markets.
PolyGram vs Kalshi: Direct Comparison
| Feature | Kalshi | PolyGram (via Polymarket) |
|---|---|---|
| UK availability | ❌ US only | ✅ Full UK access |
| Regulation | CFTC-licensed | On-chain / UMA oracle |
| Settlement | USD | USDC (Polygon) |
| Trading fee | Up to 2.5% | 0% on PolyGram |
| Market volume | Moderate | $10B+ lifetime (Polymarket) |
| Market types | Politics, economics | Politics, sports, crypto, world events |
| API access | Yes (US) | Yes (CLOB API) |
| Mobile app | iOS/Android | PWA (iOS/Android) |
Other Kalshi Alternatives
- Manifold Markets — Prediction market using play money, devoid of genuine financial risk
- Metaculus — Forecasting site without real-money trading capabilities
- Betfair Exchange — Licensed UK betting exchange featuring political prediction markets
Among genuine money prediction markets accessible to UK residents, PolyGram and Polymarket stand out for their exceptional market depth and comprehensive range of available trading opportunities.
Verdict
For British users in 2026, PolyGram represents the superior Kalshi substitute — offering richer market selections, no trading charges, and unrestricted geographical access.