Polymarket vs Kalshi
Crypto-native vs CFTC-regulated. Which prediction market fits your trading needs? Compare markets, fees, access, and safety.
Who this is for: Polymarket suits international users who want high-volume, no-KYC prediction markets; Kalshi suits US residents who want CFTC-regulated markets with segregated accounts.
The Core Difference: Regulation vs Freedom
Choose Polymarket If You Want:
- 500+ markets (highest liquidity)
- No KYC or identity verification
- Crypto-native (USDC on Polygon)
- Only pay fees on winning trades
- Available internationally
Choose Kalshi If You Want:
- CFTC regulation (legal in US)
- Segregated bank accounts
- Traditional finance integration
- Transparent contract resolution
- US regulatory protection
Two Fundamentally Different Models
Polymarket and Kalshi represent opposite ends of the prediction market spectrum. Understanding this distinction matters more than comparing features head-to-head.
Polymarket: The Crypto-Native Approach
Built on blockchain infrastructure with no central authority. Non-custodial (your funds stay in your wallet), no KYC required, global access. Markets are community-driven and resolve using UMA's decentralized oracle. The trade-off: no regulatory protection and US residents are geo-blocked.
Kalshi: The Traditional Finance Model
CFTC-regulated exchange operating under Designated Contract Market (DCM) status. Requires KYC, customer funds held in segregated US bank accounts, all contracts must be CFTC-approved before listing. The trade-off: only available to US residents and slower market creation.
Your Location Decides
If you're in the US, Kalshi is your only legal option. If you're international, Polymarket is your only option. The geographic restrictions are mutually exclusive - neither platform competes directly for the same user base.
Platform Comparison
Comparison Table
Compare features, pricing, or specifications
| Feature | Polymarket | Kalshi | Winner |
|---|---|---|---|
| Founded | 2020 | 2021 | Polymarket |
| Monthly Volume | $500M+ | $200M+ | Polymarket |
| Markets Available | 500+ | 200+ | Polymarket |
| Regulation | Unregulated (Decentralized) | CFTC (DCM Status) | Kalshi |
| US Residents | Geo-blocked | Legal | Kalshi |
| KYC Required | No | Yes | Polymarket |
| Min Deposit | $1 | $1 | Draw |
| Our Rating | 4.5/5 | 4.3/5 | Polymarket |
Fees & Costs Comparison
Comparison Table
Compare features, pricing, or specifications
| Fee Type | Polymarket | Kalshi | Winner |
|---|---|---|---|
| Trading Fee | ~2% on net winnings | $0.01–$0.07 per contract | Depends |
| Fee on Losing Trades | $0 | Yes (upfront) | Polymarket |
| Deposit Fee | $0 (USDC) | $0 (ACH) | Draw |
| Withdrawal Fee | $0 (gas only) | $0 | Draw |
| Network Gas | < $0.01 per tx | N/A | Polymarket |
| Card Deposit | ~3.5% (MoonPay) | Supported (fees vary) | Kalshi |
Different Models, Different Winners
Polymarket and Kalshi use opposite fee models. Which is cheaper depends entirely on your trading behavior.
Polymarket: Pay on Winnings Only (~2%)
Polymarket charges approximately 2% on net winnings. If you buy a "Yes" share for $0.60 and it resolves to $1.00, you pay ~2% of your $0.40 profit (~$0.008). If the trade loses, you pay $0 in fees. This model favors traders with mixed win rates or those experimenting with many small positions.
Kalshi: Upfront Per-Contract Fee ($0.01–$0.07)
Kalshi charges when you buy or sell, regardless of outcome. A $0.60 contract costs $0.03–$0.04 in fees. If you trade 100 contracts daily at $0.50 average, that's $3–$4/day in fees. For high-volume traders with strong win rates, Kalshi can be cheaper - you're not paying a percentage of large wins.
Example: $1,000 in Winning Trades
Polymarket: Pay ~$20 (2% of $1,000 winnings).
Kalshi: Depends on contract count. If you made $1,000 across 500 contracts, you paid $15–$35 in upfront fees - potentially cheaper if you also had losing trades (which cost you nothing on Polymarket but charged fees on Kalshi).
The Bottom Line
Polymarket is cheaper for casual traders, experimenters, and those with <50% win rates. Kalshi is cheaper for high-volume traders with strong win rates who trade hundreds of contracts daily.
Regulation & Access
Polymarket
Regulation: Unregulated (decentralized). Smart contracts audited but no regulatory oversight. Non-custodial - your USDC stays in your wallet.
Kalshi
Regulation: Designated Contract Market (DCM) by the CFTC. Segregated customer accounts at US banks. All contracts CFTC-approved. Full KYC required.
Polymarket Pros & Cons
Crypto-native prediction market with global access
- Pro: Highest liquidity - $500M+ monthly volume dominates the market
- Pro: No KYC required - just connect a wallet and start trading
- Pro: 500+ markets across politics, sports, crypto, culture, and economics
- Pro: Non-custodial - your USDC stays in your wallet, not on the platform
- Pro: Only pay fees on winning trades (~2% on net winnings)
- Pro: Polygon network = near-instant trades with <$0.01 gas fees
- Pro: Global access - available internationally with no geographic restrictions
- Pro: Proven track record - correctly predicted 2024 election better than traditional polls
- Con: Geo-blocked in the US - not available to US residents following CFTC settlement
- Con: Unregulated - no government oversight or investor protection guarantees
- Con: Requires crypto knowledge - must understand wallets, USDC, and Polygon
- Con: Market resolution disputes - community-driven oracle can be contentious
- Con: Card deposits expensive - MoonPay charges ~3.5% for credit card onramps
- Con: Limited recourse - if your wallet gets compromised, funds are gone
- Con: Market manipulation risk - large whales can move prices on thin markets
Kalshi Pros & Cons
CFTC-regulated prediction market for US residents
- Pro: CFTC-regulated with Designated Contract Market (DCM) status
- Pro: Legal for US residents - the only compliant prediction market in the US
- Pro: Segregated customer accounts at US banks - traditional financial protection
- Pro: Transparent resolution - every contract uses predetermined, verifiable data sources
- Pro: Traditional finance integration - ACH, wire, card deposits with no crypto needed
- Pro: No crypto knowledge required - works like a normal trading account
- Pro: Tax reporting - automatic 1099 forms for US tax compliance
- Pro: Growing market selection - 200+ contracts and expanding regularly
- Con: US residents only - international users cannot access the platform
- Con: Full KYC required - government ID and proof of residency mandatory
- Con: Upfront per-contract fees - pay $0.01–$0.07 per contract even on losing trades
- Con: Lower liquidity - smaller market volume means wider spreads
- Con: Slower market creation - all contracts must receive CFTC approval first
- Con: Fewer markets - 200+ contracts vs Polymarket's 500+
- Con: No crypto withdrawal - funds must stay in traditional banking system
- Con: Limited international expansion - regulatory model doesn't scale globally
The Decision Tree Is Simple
This isn't like choosing between two similar products where you weigh features. Your location and preferences create a clear decision path.
Start Here: Where Do You Live?
US Resident: Kalshi is your only legal option. Polymarket geo-blocks US IPs following a 2022 CFTC settlement. Using a VPN to access Polymarket from the US violates their terms of service and exposes you to legal risk. Don't try to circumvent the restrictions - just use Kalshi.
International User: Polymarket is your best choice. Kalshi only accepts US residents who pass KYC verification. You cannot access Kalshi outside the US, period.
If You Could Choose (Hypothetically)
For users who theoretically had access to both platforms (ignoring geographic restrictions), here's how to decide:
Choose Polymarket If You Value:
- Privacy: No KYC, no identity verification, pseudonymous trading via wallet address
- Liquidity: 2.5x higher monthly volume = tighter spreads and easier fills
- Market variety: 500+ markets vs 200+ on Kalshi
- Crypto-native infrastructure: Non-custodial, on-chain settlements, composable with DeFi
- Fee structure: Only pay on winners (~2% of profits). Lose a trade, pay $0 in fees.
Choose Kalshi If You Value:
- Regulatory protection: CFTC oversight, segregated accounts, legal certainty
- Traditional finance: ACH transfers, bank accounts, 1099 tax forms
- No crypto learning curve: Works like a brokerage account, no wallets required
- Transparent resolution: Every contract uses predetermined, verifiable data sources
- High-volume trading: Per-contract fees can be cheaper than percentage-based if you trade 100+ contracts daily
The Bottom Line
For most people, geography decides everything. If you're in the US, use Kalshi - it's the only legal option and it's a solid platform. If you're international, use Polymarket - it's the world's largest prediction market by volume and offers unmatched liquidity.
The "feature comparison" only matters if you had a choice. In reality, regulatory restrictions create mutually exclusive markets. Pick the platform you can legally access, then trade.
Frequently Asked Questions
Is Polymarket legal in the US?
No. Polymarket geo-blocks US residents following a 2022 CFTC settlement. Using a VPN to access from the US violates terms of service. US residents should use Kalshi, which is CFTC-regulated and legally available nationwide.
Is Kalshi legal for international users?
No. Kalshi currently only accepts US residents who pass KYC verification. International users looking for prediction markets should use Polymarket, which operates globally without geographic restrictions.
Which has lower fees, Polymarket or Kalshi?
It depends on your trading style. Polymarket charges ~2% on winnings only - if you lose a trade, you pay $0 in fees. Kalshi charges $0.01–$0.07 per contract upfront when you buy. For high-volume traders who win often, Kalshi can be cheaper. For cautious traders with mixed results, Polymarket's "only pay on wins" model is better.
Which has more markets?
Polymarket offers 500+ markets across politics, sports, crypto, economics, and culture. Kalshi offers 200+ event contracts, but every contract is CFTC-approved and resolved using predetermined data sources. Polymarket has more breadth; Kalshi has more regulatory certainty.
Do I need KYC to use Polymarket?
No. Polymarket is non-custodial and requires no identity verification for most markets. Just connect a crypto wallet and deposit USDC on Polygon. Kalshi requires full KYC for all users, including government ID and proof of US residency.
Which is safer?
Different types of safety. Kalshi is CFTC-regulated with segregated customer accounts at US banks - traditional financial protection. Polymarket is unregulated but uses audited smart contracts and non-custodial wallets - your funds stay in your control. Kalshi wins on regulatory protection; Polymarket wins on custody control.
Can I use both platforms?
Only if you're a non-US resident. US residents can only access Kalshi. International users can access Polymarket but not Kalshi. The geographic restrictions are mutually exclusive due to regulatory requirements.
Which has better sports betting markets?
Polymarket has far more sports markets and liquidity. Kalshi offers some sports contracts (awards shows, major events) but is primarily focused on politics and economics. For sports prediction markets, Polymarket is the clear winner.
Final Verdict
Polymarket Wins If:
- You're an international user
- Privacy and no KYC matter to you
- You want maximum market variety
- You prefer crypto-native infrastructure
- You want highest trading volume
Kalshi Wins If:
- You're a US resident
- Regulatory protection is important
- You prefer traditional finance
- You want transparent resolution
- You need legal certainty
Your Location Decides Everything
For US Residents
Kalshi is your only legal option. Polymarket geo-blocks US IPs, and using a VPN violates terms of service. Kalshi offers CFTC protection, segregated accounts, and growing market variety. It's a solid platform with regulatory legitimacy.
For International Users
Polymarket is your best choice. You cannot access Kalshi outside the US. Polymarket offers 2.5x more markets, higher liquidity, no KYC, and a proven track record as the world's largest prediction market by volume.
Feature Comparison Doesn't Matter
This isn't like choosing between two brokers where you can pick based on features. Polymarket and Kalshi serve mutually exclusive geographic markets. Choose based on where you live, not which platform sounds better on paper.