Underdog is one of the best-known names in daily fantasy sports, and it now runs its own CFTC-regulated prediction market inside the same app. Underdog Predict launched on its own exchange, UDX, on July 18, 2026, which means new users can trade yes/no contracts on NFL, college football, NBA and more without leaving the app they may already use for pick’em.
This guide covers the current Underdog Predict welcome offer, how to claim it, and the fine print that decides how much it is actually worth. For a closer look at the platform itself, read our Underdog Predict review.
Bottom line: New Underdog users who sign up through our link can claim a first-deposit match worth up to $1,000, plus entry into Underdog’s free-to-play Keep Your Million game. The size of the match and where the bonus can be used depend on your state and on whether you sign up for Predict or for the fantasy side, so confirm the exact terms for your location in the app before you deposit.
| Welcome Offer | 50% first-deposit match up to $1,000 in bonus funds, plus Keep Your Million (terms vary by state and product) |
|---|---|
| Who Is Eligible | New Underdog customers in an eligible state who complete identity verification |
| Qualifying Requirement | Create an account, complete identity verification, and make a first deposit (minimum deposit requirements vary by offer) |
| Bonus Distribution | Bonus funds are credited after the qualifying deposit; Keep Your Million is a separate free-to-play game |
| Bonus Expiration | Bonus credit is time-limited, with a 14-day window reported for the deposit match; confirm in the app |
| Minimum Age | 18+ in most states; 19+ in Alabama and Nebraska; 21+ in Arizona, Massachusetts and Virginia |
| Availability | Underdog Predict operates in roughly 35 states plus Washington, D.C.; availability changes, so use the in-app eligibility check |
How to Claim the Underdog Promo Code Offer
Tap Get Offer
Use the button on this page so the offer is tied to your new account when you register.
Download the App
Get the Underdog app from the Apple App Store or Google Play and open the sign-up flow.
Create Your Account
Enter your basic information and confirm you meet the minimum age for your state.
Verify Your Identity
Complete the identity verification step so Underdog can confirm you are eligible to trade.
Make Your First Deposit
Fund your account with a debit card, Trustly or Apple Pay to trigger the welcome offer.
Open the Predict Section
Browse the available markets, choose a position, and place your first trade.
The Underdog Welcome Offer
Underdog’s headline new-user offer is a 50% first-deposit match worth up to $1,000 in bonus funds, paired with entry into Keep Your Million. The match scales with your deposit, so a $200 first deposit earns a $100 match and a $2,000 deposit would hit the $1,000 cap.
There is an important catch. Underdog runs fantasy and prediction markets in one app, and the welcome offer can differ depending on which product you pick at sign-up and which state you live in. Some promotional coverage lists a smaller 25% match up to $250 for Predict users in certain states, and bonus entries tied to Keep Your Million may only be usable on the fantasy side. Because those details change, read the offer screen inside the app before you deposit rather than assuming the headline number applies to your account.
How Keep Your Million Works
Keep Your Million is a free-to-play survival game that comes with the new-user offer. You are given a pot of 1 million in play money, pick a question such as whether a quarterback will go over or under a passing-yards line, and split your pot between the two sides with a slider. You can go all in on one side or divide it any way you like. Whatever you put on the winning side carries into the next question, and if you survive all 20 questions you cash out what is left in Underdog bonus funds. Picks lock once you submit them, so there is no changing your mind after the fact.
Where Underdog Predict Is Available
Underdog Predict is live in roughly 35 states plus Washington, D.C., and that footprint is expected to grow now that Underdog controls its own exchange. Because prediction markets are federally regulated rather than licensed state by state, availability can shift as individual states test the CFTC’s authority in court. Underdog does not publish a fixed state list, so the in-app eligibility check is the only reliable answer for your location.
What Trading Costs on Underdog
Underdog charges fees on both the exchange and the broker side. Under the UDX fee schedule, takers pay a formula-based fee that peaks at about $1.75 per 100 contracts at a 50-cent price, while makers pay roughly a quarter of that. Underdog’s broker also lists a $0.01 per-contract commission. The fee appears as its own line on the order ticket before you confirm a trade, so check that number rather than relying on the advertised rate. Our prediction market fees guide explains how this compares across platforms.
Is the Underdog Offer Worth Claiming
A 50% match is a strong headline, and the free-to-play Keep Your Million game adds real upside for no cost. The offer makes the most sense for people who already like Underdog’s player-prop style and want to try prediction markets in the same app. It is less compelling if you only care about trading event contracts, since some of the bonus value may be restricted to the fantasy side or limited to a smaller match in Predict-only states. Treat the bonus as a bonus, deposit only what you plan to trade, and remember that trading involves risk, including the loss of your entire position.
Underdog Rips: The Card-Pack Offer
Underdog’s new-user offers are not limited to the deposit match. Underdog Rips is a separate product inside the same app, where you buy digital packs that each reveal one real sports trading card held in a vault. Underdog has been promoting a third welcome-offer option tied to it: play $5 and get five free Rips packs, advertised at a combined value of up to $750.
That $750 figure is the advertised potential value of the packs, not cash and not a guaranteed return. Each pack is random, and most pulls land well below the top end. Several affiliate pages list the offer, but the code and terms differ from page to page, so confirm the exact version on the offer screen before you select it.
You pick one. New users are shown a choice of welcome offers, which have included the 50% deposit match, a play-$5-get-$100 bonus-entries offer, and the free Rips packs, and published coverage says the selection is final. Choosing Rips means giving up the deposit match, which is the one that applies to Underdog Predict.
How Underdog Rips Works
| What You Get | Digital packs that each reveal one real sports card (NBA, NFL or MLB), authenticated or graded by PSA, BGS, CGC or SGC |
|---|---|
| Where to Find It | The Games section of the Underdog app; Rips is app-only |
| Pack Prices | Packs start at $5 and go up to $1,000 and beyond; the current lineup and prize ranges are shown on each pack’s page |
| Odds | Probabilities are shown per tier before you buy, not per individual card; a 50/50 Toss Up option is offered on some lower-priced packs |
| After You Rip | Ship the physical card, hold it in your Card Stash, or sell it back at the displayed fair market value |
| Decision Window | Three days; a card you do not claim is automatically sold back |
| Shipping | You pay the shipping fee, and delivery times vary by which vault holds the card |
| Availability | Available in the US except Nevada; not available in Canada; 18+ (19+ in Alabama and Nebraska, 21+ in Arizona, Massachusetts and Virginia) |
Is Underdog Rips Worth It
Rips is a card-collecting product, not a prediction market, and it is not a sweepstakes casino. The pitch is transparent odds and a real card behind every pull, with the option to sell back instead of waiting for shipping. It is a fun fit for card collectors who already use Underdog.
Go in with clear eyes. Underdog does not publish a buyback percentage, the help center and the terms have been reported to disagree on how long you have before an unclaimed card is auto-sold, and the product only launched in late summer 2026, so there is little track record to judge. Expected value on any random pack is a bet against the house, so treat free packs as entertainment rather than guaranteed money, and only spend what you are comfortable losing.
Underdog Promo Code FAQ
Do I need to enter an Underdog promo code?
In most cases the offer is applied when you sign up through the link on this page. If the app asks for a code and the field is empty, enter the code shown on the offer screen before you finish registering.
Is the Underdog offer available in my state?
Underdog Predict operates in roughly 35 states plus Washington, D.C., and the offer varies by state. The in-app eligibility check is the only way to confirm your location.
Can I use the bonus on prediction markets?
It depends on your state and the product you choose at sign-up. Some bonus entries from Keep Your Million may only be usable on the fantasy side, so read the terms on the offer screen.
Does the bonus expire?
Yes. Bonus credit is time-limited, with a 14-day window reported for the deposit match, so plan to use it soon after it lands.
Is Underdog Predict legal?
Underdog Predict is offered through a CFTC-registered broker and trades on Underdog’s own CFTC-regulated exchange, UDX. Our guide to whether prediction markets are legal covers the wider picture.
What is the minimum age?
You must be 18 or older in most states, 19 or older in Alabama and Nebraska, and 21 or older in Arizona, Massachusetts and Virginia.
Explore More
Compare Underdog against the rest of the field before you commit your first deposit.
- Underdog Predict Review — Our full breakdown of how the platform works.
- Best Prediction Market Apps 2026 — See how Underdog stacks up against Kalshi, Polymarket and the rest.
- Novig Promo Code — Another sports-focused prediction market offer.
- Kalshi Promo Code — The largest regulated prediction market’s welcome offer.
- Prediction Market Fees Explained — How trading fees work across major platforms.
- Prediction Market Promotions — Browse every current sign-up offer across the space.
Trading involves risk, including total loss on positions. Must be 18+ (19+ in AL and NE, 21+ in AZ, MA and VA) and located in an eligible state. See full terms in the Underdog app. Promotion issued by affiliate.
