The Final Four lineup is set for Saturday, April 4, 2026, featuring two matchups beginning with Illinois vs. UConn at 6:09 p.m. ET on TBS. Before diving into the college basketball action, take a look at the top Final Four prediction markets highlighted below.
We break down current welcome offers from leading prediction markets in 2026, including Polymarket, Kalshi, Novig, and ProphetX. Altogether, these promos offer up to $180 in bonus value that can be used right away on Saturday’s Final Four markets from the best prediction market apps.
Use the sign-up modules below to join these Final Four prediction markets and start trading on which teams will advance to the NCAAB National Championship Game on Monday, April 6. The action tips off with Illinois vs. UConn live from Lucas Oil Stadium in Indianapolis at 6:09 p.m. ET.
Best March Madness Final Four Prediction Markets Today
| Prediction Market Offers | Promo Code |
| Polymarket – Skip the waitlist and deposit $20 to get a $20 bonus | LABS |
| Kalshi – Trade $10, Get a $10 Bonus | LABS |
| Novig – Spend $5, Get $50 in Novig Coins | BCLABS |
| ProphetX – Get a 20% Purchase Match, up to $100 in Bonus Funds | LABS100 |
Top Final Four Prediction Market Promos for Saturday, April 4
Claim one of the offers below and access up to $180 in bonus value from leading Final Four prediction markets. These bonuses are available for either Saturday matchup. The slate begins with Illinois vs. UConn at 6:09 p.m. ET on TBS, and concludes with Michigan vs. Arizona at 8:49 p.m. ET on TBS.
Polymarket Leads the Way for Final Four Prediction Markets
If you’re not located in a traditional sports betting state and want to stack bonuses for picks on Final Four prediction markets, consider using the Polymarket promo code LABS. This invite code lets you skip the waitlist and begin immediately. Just deposit $20 on Polymarket to receive a $20 bonus.
Kalshi Promo Code LABS Unlocks $10 Bonus for Illinois vs. UConn
Kalshi stands out among Final Four prediction markets with a simple welcome offer. Sign up with the Kalshi promo code LABS, complete a $10 trade, and receive a $10 bonus to use across college basketball markets.
Novig Promo Code BCLABS Offers $50 in Coins for Final Four Markets
Novig is another option within Final Four prediction markets, operating on a sweepstakes model with Novig Cash and Coins. Use the Novig promo code BCLABS, spend $5, and receive $50 in Novig Coins to use on March Madness markets.
ProphetX Promo Targets Michigan vs. Arizona Final Four Matchup
Rounding out the Final Four prediction markets list is ProphetX, which is offering a deposit-style bonus ahead of Saturday’s games. Use the ProphetX promo code LABS100 to receive a 20% match on your first purchase, up to $100 in bonus funds when you spend $500 or more.
