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Underdog Referral Program 2026: How to Earn Rewards for Each Invite

Updated: Jun 15, 2026, 8:30 AM ET

If your friend signs up using your unique Underdog referral code and deposits at least $10, you will get a bonus in the form of Program Credits. You can use these in-app credits to trade prediction markets.

The amount of Program Credits that you get is $10 or $25, depending on what is advertised in your region at the time. To refer friends, you must be an active Underdog user who is aged 18+ and in a state where prediction markets and other Underdog products are legal. You can find out everything you need to know below.

Underdog Referral Program - Up to $25 Program Credits

The referral program at Underdog allows you to share your unique link with friends to get a bonus. If your friends register using your link, a promo code with your username should automatically be populated in the form.

Once they have fully signed up, verified their account, and deposited at least $10 in cash, you’ll get a Program Credit bonus of $10 - $25. You can check out the banners on this page for details of the exact bonus.

You can use your Program Credits on any of the Underdog products that are legally available where you are. This includes purchasing the Yes or No event contracts covered in our Underdog Prediction Markets review.

Not yet signed up? You can get a $50 welcome bonus when you register via the banners on this page and play or trade $5. Here’s all the basic info that you need:

Disclaimer: Trading derivatives involves risk and may not be appropriate for all. For more information visit: https://www.nadex.com/rules and https://underdogfantasy.com/rules. For Crypto.com Predictions, the term "pick" refers to a product traded on CDNA.  

Pros and Cons of the Underdog Refer-A-Friend Bonus

Before we look at this offer in more detail, let’s summarize the pros and cons:

How to Use the Underdog Referral Code - Step-By-Step

Here is what you and your friend must do for you to get the referral bonus:

What You Need to Do

First of all, here’s how you can find your unique referral link:

  1. Open the Underdog app

  2. Log in to your existing account.

  3. Tap the “Invite Friends” tab

  4. Copy your unique link

  5. Share your link with friends

  6. Have your friend follow the steps outlined below

What Your Friend Must Do

Once you’ve shared your link with friends, here are the steps they must take for you to get those Program Credits:

  1. Download the Underdog app

  2. Open your referral link

  3. The code (your username) should automatically be applied

  4. Sign up for Underdog with your personal details

  5. Read and accept the T&Cs

  6. Verify account with SSN and photo ID or proof of address

  7. Deposit a minimum of $10

  8. You should now get your Program Credits

There are a couple of scenarios to address here, both of which have a simple fix:

  • Your friend doesn’t register via your link - They simply must put your username manually into the “Promo Code” box in the signup form. If they register via your link, this will be done automatically.
  • Your friend forgets to use the link and the code - If your friend doesn’t register via your link and signs up without applying your user name, all is not lost. You and they should contact customer service, who should be able to resolve the issue for you. However, you must do this within 12 hours of your friend's registration, or the referral bonus will not be applied. Your friend will still get their welcome offer, though.

Is There a Limit to the Maximum Number of Referrals You Can Make?

According to the bonus T&Cs, there isn’t a limit to the number of referral bonuses that you can claim. It’s therefore in your interest to share your link with as many friends as possible.

Who Can Claim the Referral Bonus?

The welcome offer and referral bonuses are available to all eligible Underdog players. Speaking in general terms, the app can be downloaded and used in 46 states plus Washington, D.C. However, prediction markets are only accessible to users aged 18+ in the following locations:

Alabama, Alaska, Arkansas, California, Florida, Georgia, Hawaii, Idaho, Indiana, Kansas, Maine, Minnesota, Mississippi, Missouri, Montana, Nebraska, New Mexico, North Carolina, North Dakota, Oklahoma, Oregon, Rhode Island, South Carolina, South Dakota, Texas, Utah, Vermont, Virginia, Washington, Washington DC, West Virginia, Wisconsin, and Wyoming.

Using Your Underdog Referral Bonus on Prediction Markets

If you are located in any of the 32 states mentioned above (plus DC), you can use your bonus on Underdog Predict. Similar to other prediction market sites, this is a CFTC-regulated exchange where you can make predictions by purchasing Yes or No event contracts.

These contracts are priced between $0.01 and $1.00 based roughly on the percentage chance of the outcome happening. If your prediction is correct, the contracts pay out at $1.00 each.

Example of How Underdog Prediction Markets Work

Let’s say you want to take the Rockets on a -4.5 spread vs the Hawks, and they had a 55% chance of winning. This is how it might look:

If you thought the Rockets would beat the spread, you would purchase “Yes” contracts. Let’s say you buy 10:

  • Initial investment: 10 x $0.55 = $5.50
  • Payout if contract resolves as a “Yes”: 10 x $1.00 = $10.00
  • Profit if your prediction  is correct: $10.00 - $5.50 = $4.50

Remember that you can just as easily lose your full outlay as win a profit. 

Underdog Predict Referral Bonus - Summary and Conclusion

In conclusion, you can get between $10 and $25 in Program Credits for every successful referral that you make to the Underdog app. For your referrals to be successful, a friend must register using your link or promo code and deposit at least $10.

When your friend signs up, they are still eligible for the play for $5 and get a $50 welcome bonus. If you have taken your time to read our full Underdog Prediction markets review and would like to give it a try, you can register via the banners on this page.

Underdog Predict is a registered FCM offering event contracts. Trades may be placed on CDNA, a registered DCM, powered by UDM Services, LLC. Trading involves significant risk and is not appropriate for all. Must be a U.S. resident. Terms apply: underdogpredict.com. Content is promotional and is not a recommendation to trade.
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Underdog Predict is a registered FCM offering event contracts. Trades may be placed on CDNA, a registered DCM, powered by UDM Services, LLC. Trading involves significant risk and is not appropriate for all. Must be a U.S. resident. Terms apply: underdogpredict.com. Content is promotional and is not a recommendation to trade.

Underdog Referral Code FAQ

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