🏀 March Madness Odds at Kalshi Prediction Market: Duke Leads Michigan, Arizona

🏀 College Tournament odds at Kalshi: Men's college basketball champion

Duke (20%), Michigan (18%), Arizona (17%), and Florida (10%) lead the odds at Kalshi as the four No. 1 seeds in the March Madness bracket. Houston is next, as a 2-seed, with a 7% chance of winning the title game at Lucas Oil Stadium on Monday, April 6.

Two teams are at 5%, two at 4%, and seven each have 2% odds, including Gonzaga as a potential March Madness long-shot pick.

As of the time of writing on Wednesday evening, this market has drawn nearly $85.5 million.

Here are the full Kalshi percentages and the conversion to American odds, via our odds converter.

Note: Gonzaga isn't shown in the table but has a yes price of 2 cents.

💰 Kalshi Billion Dollar Bracket

Kalshi is running a Billion Dollar Bracket contest - with a deadline of Thursday's 12:15 p.m. ET first tipoff - with a grand prize of $1 BILLION for a perfect bracket. Contestants just need to create and verify an account at Kalshi. There is no deposit or trade required.

If there is no perfect bracket, a first-place prize of $1 million will be award to the highest-scoring entry following the national championship on Monday, April 6.

👉 Must be of legal age (18+) and only one entry per user. Bracket contest not available to users in NY, Fla., or outside of the U.S. College basketball players, coaches, team staff, and officials in the 2026 Men's NCAA Tournament are also excluded.

🏆 College basketball predictions: Championship & Final Four 2026

Here are our experts' March Madness predictions to help you fill out your own printable March Madness bracket:

🔢 Seed to win men's college basketball championship

A trading market at Kalshi that I'm particularly fond of is for the seed to win the tournament. The odds are heavily skewed to a one seed winning (65%), and drop all the down to 20% for a 2-seed, then 8% for a 3-seed. 

Though, again, Duke is our expert team's most common March Madness prediction, the value lies in jumping down the bracket.

For this market, I'll be trading on No. 3 seed (8%) and No. 5-8 seed (5%). I took Gonzaga, the No. 3 seed in the West Region as part our March Madness expert picks. A $10 investment in Gonzaga would return a profit of $115.

⚖️ How to trade on March Madness at Kalshi

What is Kalshi and how does it work for March Madness?

Kalshi is a U.S.-regulated prediction market exchange overseen by the Commodity Futures Trading Commission (CFTC), where users trade on real-world outcomes using simple yes/no contracts. For the 2026 NCAA Tournament, that means markets tied to questions like whether Duke wins the national championship, if Cameron Boozer wins Most Outstanding Player, or which team advances out of each region.

Each contract pays out $1 if the outcome happens and $0 if it does not. If you think Duke will win the national championship and buy a "Yes" contract at 25 cents, that implies a 25% chance. If Duke wins, the contract settles at $1, netting you 75 cents per share. If they lose, it settles at $0. Prices fluctuate in real time as users buy and sell, so the market reflects the crowd's collective expectations — and shifts with every upset, injury update, and bracket result across the tournament's three weeks.

How does Kalshi differ from sports betting on March Madness?

Sportsbooks vs. Kalshi -the key differences

If you've ever placed a bet at a sportsbook, Kalshi will feel familiar but work differently in a few important ways.

At a traditional sportsbook, you bet against the house at a fixed line. The book sets the odds, builds in a margin (the "vig"), and you either win or lose at those terms. For March Madness, that might look like Duke at +400 to win the national championship — meaning a $100 bet returns $400 profit if they cut down the nets.

On Kalshi, there is no house. You trade directly with other users in an open market. Prices are expressed in cents as implied probabilities rather than traditional American odds. A contract priced at 20 cents implies a 20% chance of winning — the same information as American odds, just presented differently. There is no vig baked into a fixed line; instead, the spread between the buy and sell price is how the market operates.

The flexibility advantage

The other major difference is flexibility. A sportsbook bet is locked in once placed. On Kalshi, you can sell your contract at any time before the tournament ends — locking in a profit if the price has moved in your favor, or cutting your loss if your team gets upset. This makes Kalshi feel less like gambling and more like trading, where strategy and timing matter as much as picking the right champion.

Why trade March Madness on Kalshi instead of a sportsbook?

Four key advantages

Kalshi offers four key advantages for March Madness prediction markets:

• Flexibility: Unlike a locked-in sportsbook futures bet, you can sell your contract at any time before the outcome is decided — especially valuable across a three-week tournament where bracket chaos can shift the market dramatically after every round
• Transparency: You trade against other users in an open market, which can surface better value than a sportsbook futures line where the house always has an edge
• Federal regulation: As a CFTC-regulated exchange, your funds are held in a secure, audited environment — a level of oversight most offshore sportsbooks don't offer
• Wider availability: Kalshi operates in many U.S. states where traditional sports betting is not yet legal, making March Madness markets accessible to a broader audience. Note: the Kalshi $1 billion bracket contest is not available in New York or Florida

How to read Kalshi March Madness odds

Cents to American odds conversion

Kalshi displays prices in cents, which represent the implied probability of an outcome. Here's a quick conversion guide:

If you're coming from sports betting, the simplest way to think about it: a lower cent price means a bigger underdog, and a higher cent price means a heavier favorite — just like long odds vs. short odds at a sportsbook.

Tips for trading the 2026 NCAA Tournament on Kalshi

Act early on favorites

Championship markets for Duke, Arizona, Michigan, and Houston will tighten as the tournament progresses and chalk survives. Getting in before the first weekend locks in better prices on the teams most likely to be standing in Indianapolis.

Watch for upset overreactions

A first-round Cinderella run can cause surviving teams' contract prices to spike. If a double-digit seed knocks off a 1-seed in your region, the remaining teams in that bracket become significantly more valuable — buy before the market fully adjusts.

Diversify across markets

With individual game, region winner, Final Four, and championship markets all available, spreading contracts across multiple outcomes is a lower-risk approach than concentrating everything on one champion pick.

Sell between rounds if you're up

If your contract has risen in price after a strong weekend, consider selling to lock in a guaranteed return rather than riding it through the next round. Three weeks is a long time in March Madness.