Kalshi vs Rebet
Published 2026-08-07 · Last reviewed 2026-08-07
TL;DR
- Kalshi: The CFTC-regulated exchange — the safest on-ramp for US traders.
- Rebet: Mobile-first social app — peer-to-peer picks with a friends layer.
- For college markets specifically, Kalshi is the one most readers should open first — us traders who want a regulated venue and a real mobile app.
| KalshiGet $10! | Rebet100% purchase match up to $100! | |
|---|---|---|
| Regulation | CFTC-regulated designated contract market (DCM) | Sweepstakes/social model; not a CFTC exchange |
| Trading fees | ≈1–7% per trade (0.07 × contracts × price × (1 − price)); 0% at settlement | No per-trade commission; house margin is built into the lines |
| College markets | College football, March Madness, Heisman, admissions-adjacent policy markets | College football and basketball game lines and props |
| Apps | Web, iOS, Android | iOS, Android (mobile only) |
| Deposit methods | ACH, debit card, wire ($10), crypto | Card, Apple Pay, bank |
| Minimum deposit | $1 | $10 |
| Withdrawals | ACH free, 1–3 business days; wire $30 | 1–5 business days depending on method |
| US availability | Available in most US states and DC | Available in most US states and DC |
| Best for | US traders who want a regulated venue and a real mobile app | Students who want a social, game-shaped experience on a phone |
| Watch out for | Fees peak near 50¢ — the closer to a coin flip, the more you pay | Not an exchange — you are not trading against an order book |
| Sign up | Open Kalshi | Open Rebet |
Fees: what a round trip actually costs
Kalshi charges ≈1–7% per trade (0.07 × contracts × price × (1 − price)); 0% at settlement. Rebet charges no per-trade commission; house margin is built into the lines. Headline rates mislead on small balances: on a $20 stake, a deposit or withdrawal fee usually outweighs the per-trade commission, so count the whole round trip before deciding.
College market depth
Kalshi lists college football, march madness, heisman, admissions-adjacent policy markets. Rebet lists college football and basketball game lines and props. If you are here for college football or March Madness, depth matters more than a few basis points of fee difference — a market that does not exist cannot be traded at any price.
Access and apps
Kalshi runs on web, ios, android and is available in most us states and dc. Rebet runs on ios, android (mobile only) and is available in most us states and dc.
The verdict
Pick Kalshi if: us traders who want a regulated venue and a real mobile app. Pick Rebet if: students who want a social, game-shaped experience on a phone. The honest answer for most students is to open the one that lists the markets you actually want and keep the other as a price check.
Frequently asked questions
Is Kalshi or Rebet cheaper?
Kalshi: ≈1–7% per trade (0.07 × contracts × price × (1 − price)); 0% at settlement. Rebet: No per-trade commission; house margin is built into the lines. Compare on total round-trip cost — deposit fee, trading fee, and withdrawal fee together — not the headline rate.
Which has more college markets, Kalshi or Rebet?
Kalshi lists college football, march madness, heisman, admissions-adjacent policy markets. Rebet lists college football and basketball game lines and props.
Can I use both Kalshi and Rebet?
Yes. Many traders keep accounts on both and route each trade to whichever venue prices that market better. Nothing stops you from claiming both sign-up offers if you qualify in your state.
Is Kalshi legal in my state?
Available in most US states and DC. Rebet: available in most us states and dc. Check the state pages on this site for the current list before depositing.
Sources & further reading
- CFTC — Designated Contract Markets (DCMs)U.S. Commodity Futures Trading Commission
- Kalshi Rulebook and exchange rulesKalshi (KalshiEX LLC)
- Polymarket Terms of Use — eligibility and restrictionsPolymarket
Related
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