If you're betting sports on DraftKings, FanDuel, or any traditional sportsbook, you're paying a hidden tax on every bet — the vig. On Kalshi, you're trading on an exchange with no bookmaker margin. Here's why that matters and how to make the switch.
The Vig Problem
Every sportsbook builds a margin (vig) into their odds. On a standard -110/-110 line, you're paying about 4.5% in vig. On props and parlays, it's even worse — sometimes 10-20%.
On Kalshi, there's no vig. You're trading against other market participants, and the only cost is a small per-contract fee. For most trades, this is significantly less than sportsbook vig.
Key Differences for Sports Bettors
| Feature | Sportsbooks | Kalshi |
|---|---|---|
| Odds format | American (-110, +150) | Probability (0-99¢) |
| Who sets the line? | The bookmaker | The market (other traders) |
| Cashing out early? | Poor terms if available | Sell at market price anytime |
| Winning too much? | Account limited/banned | Never — exchange wants active traders |
| Bot/API trading? | Prohibited | Encouraged, full API available |
| Promos/bonuses? | Yes (with strings) | No |
The Biggest Advantage: No Account Limits
This is the game-changer that sharp bettors immediately understand. If you're winning consistently on DraftKings, they limit your account — smaller max bets, worse odds, eventually restricted access. They don't want winning customers.
Kalshi can't and doesn't limit winners. As an exchange, they make money on trading fees regardless of who wins. The more you trade, the more they earn. Your success is their success.
Reading Kalshi Prices as a Sports Bettor
The conversion is simple:
- A YES contract at 50¢ = even money (equivalent to +100 or -100)
- A YES contract at 70¢ = roughly -233 (70% implied probability)
- A YES contract at 30¢ = roughly +233 (30% implied probability)
Formula: American odds from Kalshi price:
If price > 50¢: Odds = -(price / (100 - price)) × 100
If price < 50¢: Odds = +((100 - price) / price) × 100
Getting Started
- Create a Kalshi account and verify your identity
- Fund your account via bank transfer
- Browse sports markets — they're organized by sport, date, and event
- Start small — $5-10 trades until you're comfortable with the interface
- Consider automation — explore our bot guide to scale what works
Automate Your Sports Trading
Stop clicking buttons. Build bots that execute your sports strategies automatically.
Free office hours with the founders
Drop in Mon, Tue & Wed at 9 AM Pacific — we'll help you build and run your Kalshi bots, live. Everyone welcome, no registration.
See office hours →Can't make 9 AM? Book a free 1:1 instead.