Kalshi vs Polymarket — Which Is Better?
Both are leading prediction market platforms, but they differ in regulation, fees, market selection, and user experience. Here's an honest, side-by-side comparison.
SIDE_BY_SIDE
Quick Comparison
| Feature | Kalshi | Polymarket |
|---|---|---|
| Regulation | CFTC-regulated (US) | Unregulated (crypto-based) |
| KYC Required | Yes (full ID verification) | No (crypto wallet only) |
| US Legal Access | Yes (most states) | Restricted (geo-blocked) |
| Currency | USD (bank/card deposits) | USDC (crypto) |
| Fees | ~2% per trade + withdrawal fees | ~1-2% spread (no explicit fee) |
| Market Selection | Narrower (CFTC-approved only) | Broader (politics, crypto, sports, AI) |
| Volume / Liquidity | Lower | Higher (much more liquid) |
| Mobile App | Yes (iOS & Android) | Web-based (limited mobile) |
| Copy Trading | None | Yes (via Polycopy) |
| Max Position | $25K per market (CFTC limit) | Unlimited |
Data as of April 2026. Fees and features may change — verify on each platform.
DEEP_DIVE
Detailed Comparison
Regulation & Legal Status
Kalshi
Kalshi is a CFTC-regulated designated contract market (DCM), making it fully legal for US residents. This means your funds are held in regulated accounts, the platform undergoes regular audits, and you get built-in tax reporting (1099 forms). The trade-off: CFTC approval limits which markets Kalshi can offer, and the platform is US-only.
Polymarket
Polymarket operates as a crypto-native, globally accessible prediction market built on Polygon. It's generally geo-blocked for US users. The lack of CFTC constraints means Polymarket can list virtually any market — politics, crypto, sports, AI — but without the regulatory protections that come with a licensed exchange.
Learn more about trust and safety: Is Polymarket Legit?
Fees & Costs
Kalshi
- ~2% fee per trade (built into the spread)
- Withdrawal fees for some methods
- No crypto gas fees — USD deposits via ACH/wire
Polymarket
- No platform fees — only the bid-ask spread (~1-2%)
- Polygon gas fees are minimal (pennies per trade)
- Requires crypto onramp (USDC on Polygon)
Bottom line: For a $100 trade, Kalshi costs ~$2 in explicit fees. Polymarket costs ~$0.01 in gas but the spread is market-dependent. High-volume traders save significantly on Polymarket.
Market Selection & Liquidity
Kalshi
~100+ active markets, all CFTC-approved event contracts. Categories include economics, politics, weather, and some financial events. Monthly volume around $10-20M. New markets require regulatory approval, which slows expansion.
Polymarket
1,000+ active markets across politics, crypto, sports, AI, entertainment, and more. Monthly volume exceeds $100M+ — roughly 5-10x Kalshi's liquidity. Higher liquidity means tighter spreads, better price discovery, and easier entry/exit on positions.
User Experience
Kalshi
Polished native mobile apps for iOS and Android. Clean, traditional finance UX with USD deposits via ACH, debit card, or wire transfer. Simple onboarding for users comfortable with traditional brokerages. Tax reporting built in.
Polymarket
Primarily web-based with a growing mobile experience. More advanced trading features including limit orders, detailed order books, and portfolio analytics. Requires a crypto wallet (small learning curve for non-crypto users), but offers deeper market data and transparency via on-chain activity.
Copy Trading — Polymarket's Edge
Kalshi
No copy trading. Kalshi doesn't expose public trader data, profiles, or trade history. There's no way to see what top traders are doing or follow their strategies. You're entirely on your own.
Polymarket
Full copy trading via Polycopy. Because every Polymarket trade is recorded on-chain, Polycopy can track trader performance, surface top performers, and let you follow or copy their trades. Browse leaderboards, analyze win rates, and replicate positions with one click.
DECISION_GUIDE
Who Should Use Which?
Choose Kalshi if…
- You want a US-regulated, CFTC-approved platform
- You prefer USD deposits via bank transfer or card
- You want simple, traditional-finance UX
- You don't want to deal with crypto wallets
- You need built-in tax reporting (1099 forms)
- You only trade economics and political markets
Choose Polymarket if…
- You want more markets and deeper liquidity
- You want to copy trade top traders (via Polycopy)
- You prefer lower fees and no platform commissions
- You want unlimited position sizes (no $25K cap)
- You're comfortable with crypto (USDC on Polygon)
- You want blockchain transparency on all trades
Not sure? New to prediction markets entirely? Start with our beginner's guide to understand the basics before choosing a platform. You can also see how both compare to other platforms on our full platform comparison.
FAQ
Common Questions
Is Kalshi or Polymarket better?
Can I use both Kalshi and Polymarket?
Which has lower fees, Kalshi or Polymarket?
Is Kalshi legal in the US?
Is Polymarket legal in the US?
Can I copy trade on Kalshi?
Try Copy Trading on Polymarket
Comparing platforms? Polycopy gives you an edge on Polymarket — follow top traders, see their positions, and copy the trades that match your strategy. Free to browse.
See pricing & features · Currently supports Polymarket
Disclaimer: This page is for informational purposes only and does not constitute financial, investment, or trading advice. Polycopy is not affiliated with Polymarket or Kalshi. Information is based on publicly available data as of April 2026 and may not reflect current platform features, fees, or availability. Prediction markets carry risk — you can lose your entire investment. Always verify eligibility and terms on each platform's official website.