Kalshi vs PredictIt (2026): Which Political Prediction Market Wins?

The Fee Gap: Why It Matters More Than Anything Else

The most important fact in this comparison is also the most dramatic: PredictIt charges 10% of net profits plus a 5% withdrawal fee. Kalshi charges up to 2% per trade, capped at approximately $1.74 per $100 traded, with free ACH withdrawals.

Run the math on a simple scenario: you trade $1,000 positions on political events ten times per year, winning six and losing four, with an average winning profit of $200 and an average losing loss of $150.

• Gross P&L: (6 × $200) − (4 × $150) = $1,200 − $600 = $600 profit
• PredictIt fees: 10% on each profitable market = $120 in platform fees, plus 5% withdrawal on net proceeds = significant additional friction on the $1,080 you attempt to withdraw
• Kalshi fees (taker, worst case): $1.74 per $100 traded × 10 trades × ~$10 per trade = roughly $17.40 total fees across all positions

This is not a close comparison. PredictIt's fee structure is designed for an era when it had no serious regulated competition. Following Kalshi's 2021 launch, PredictIt's pricing model became a significant competitive disadvantage for active traders.

Political Data Depth: PredictIt's Enduring Advantage

PredictIt has one genuine, difficult-to-replicate advantage: ten years of continuous US political market data. It has priced every major US political event from 2014 through 2026 — three presidential elections, six congressional cycles, Supreme Court nominations, major legislation, and ongoing approval rating markets.

This data matters for:

• Academic research. Political scientists, economists, and policy researchers who cite market-based political forecasting in published work often need the PredictIt dataset because it predates Kalshi by seven years. Victoria University's research partnership has produced peer-reviewed work that references PredictIt markets specifically.
• Historical calibration. Traders who want to understand how prediction markets have priced similar events in the past (e.g., a Senate runoff election in Georgia, a Supreme Court vacancy in an election year) can use PredictIt's historical data to calibrate their priors. Kalshi lacks this historical context for events before 2021.
• Comparative pricing. When both platforms price the same political event, historical comparison of how each platform's price evolved toward resolution can reveal systematic differences in participant composition or information processing.

For traders — as opposed to researchers — this historical advantage translates into marginal value at best. What matters for trading is current liquidity and accurate pricing, and Kalshi's lower fees remain a structural advantage for active political event traders.

Economic Markets: The Comparison That Isn't

If you want to trade economic indicator markets — CPI, FOMC rate decisions, GDP, unemployment — this comparison ends immediately. Kalshi has them; PredictIt does not.

This is not a gap that PredictIt can easily close. Offering CFTC-approved economic indicator contracts requires DCM registration and separate approval for each contract type. Kalshi obtained this through a multi-year regulatory process. PredictIt, which operates under no-action relief rather than DCM registration, has no path to economic indicator contracts under its current framework.

For investors who want to use prediction markets as macroeconomic forecasting tools — the use case validated by Federal Reserve research in January 2026 — Kalshi is the only regulated option.

Regulatory Status: Not Equivalent (Corrected July 2026)

Correction: an earlier version of this comparison — echoing widespread trade-press reports — stated that PredictIt became a full CFTC DCM on January 26, 2026, putting it on equal regulatory footing with Kalshi. That was wrong. The CFTC DCM/DCO registries list Aristotle Exchange (a separate exchange under PredictIt's parent company, designated September 2025 and acquired by Underdog in March 2026), not PredictIt.

The actual regulatory picture:

• Kalshi is a full CFTC Designated Contract Market with an established multi-year regulatory track record.
• PredictIt operates under a 2014 CFTC no-action letter — regulatory tolerance, not registration — reaffirmed by the CFTC in December 2025. Its $850 per-contract limit remains in force.
• Kalshi's reported $263.5M in 2025 fee revenue is a research-pipeline figure that remains unverified; PredictIt's financials are not publicly disclosed.

For investors who require CFTC regulatory oversight as a baseline criterion, only Kalshi qualifies as a designated exchange.