Prediction market promos and sign-up offers, checked against official terms

Offers we could verify

Three platforms publish sign-up or referral programs in official terms. They are listed by how completely those terms set out the amount and conditions, not by offer size. Offers play no part in our separate best prediction markets ranking, where Kalshi is first.

Polymarket US: three official programs

Polymarket US documents three incentive programs on its user-programs page.

• Deposit Incentive. Deposit $10 or more and receive a $25 trading credit. No code is required in the terms we read.
• Refer-a-Friend. When someone you refer deposits $10 or more, you and they each receive $25. You can refer up to 50 people.
• Deposit and trading campaigns. Larger deposits earn daily credits for five days: $50 a day for a $500 deposit, $20 a day for $250, $10 a day for $100 and $5 a day for $50. Total credits from these campaigns are capped at $2,000 over the life of the account.

In all three, the credit cannot be withdrawn, but proceeds from contracts that settle in your favor can be. Polymarket US is a different product from the offshore polymarket.com; these terms apply only to the US app.

Polymarket US

The CFTC-regulated US version of Polymarket, with official published fees and maker rebates.

Best for: Low-cost limit-order traders

Why it ranks here

The most fully documented offer in this group: three official programs, published amounts and clear withdrawal rules.

Strengths

• Fee schedule is official and public, with a worked formula
• Makers earn a rebate instead of paying a fee
• Official, documented new-user credit ($25 for a $10 deposit)
• Wide range of funding methods, including PayPal and Venmo

Limitations

• Different product from the global polymarket.com, which confuses many users
• Sued by New York (Sep 2026) and several other states
• No official state availability list in its documentation
• Promotional credits cannot be withdrawn

Sign-up offer

$25 trading credit when you deposit $10 or more

Deposit Incentive program. Credits cannot be withdrawn, but settlement proceeds from trades made with them can. Deposit-and-trade campaigns may add more credits, up to a $2,000 lifetime cap. Confirmed on Polymarket US's site October 4, 2026. Eligibility rules and terms apply. Official terms. Not available in: NV.

Visit Polymarket US (opens the operator's site in a new tab) Read full review

FanDuel Predicts: up to $100 over five days

FanDuel’s official terms describe a stepped offer. You receive $20 in Predicts Bonus after your first deposit and first trade, then $20 on each of four further days on which you trade at least $1, for a maximum of $100. The promotion period runs from August 24, 2026, 1 PM ET, to October 20, 2026, 11:59 AM ET.

Eligibility is narrow. You must be 18 or older and located in one of the 18 states where FanDuel Predicts offers sports contracts: AK, AL, CA, DE, FL, GA, HI, ID, MN, NE, NM, ND, OK, RI, SC, SD, TX and UT. Only the winnings portion of a bonus trade can be withdrawn.

FanDuel Predicts

FanDuel's prediction-market app on CME Group contracts, with sports in states without a FanDuel sportsbook.

Best for: Sports fans in eligible states

Why it ranks here

A clearly dated official offer with a simple structure, limited to 18 sports-eligible states.

Strengths

• Official, clearly dated new-customer offer
• Simple fee model: 2% of potential payout
• Familiar FanDuel app experience
• Backed by CME Group, a major US exchange

Limitations

• Sports contracts limited to 18 states
• A flat 2% of payout costs more than formula-based fees except near 50¢ (e.g. $2.00 vs Kalshi's $0.63 per 100 contracts at 90¢)
• The current offer expires Oct 20, 2026
• Fees also apply on early cash-out

Sign-up offer

Up to $100 in Predicts Bonus: trade $1 a day for 5 days

You get $20 after your first deposit and trade, then $20 a day on 4 more trade days. Open to 18+ users in the 18 sports-eligible states. Only the winnings from bonus trades can be withdrawn. Confirmed on FanDuel Predicts' site October 4, 2026. Eligibility rules and terms apply. Official terms. 18+.

Visit FanDuel Predicts (opens the operator's site in a new tab) Read full review

Kalshi: referral program, amount varies

Kalshi does not publish a fixed sign-up bonus. Its official referral program FAQ says the amount depends on the program shown in your account’s Rewards section, and it is open to US users only. The referral code must be entered at signup or within 72 hours, before your first deposit. Credits must be used within 7 days, only profits from them can be withdrawn, and there is a lifetime cap.

Many affiliate sites advertise fixed Kalshi amounts or “up to” figures. Those are the publishers’ claims; we could not match them to Kalshi’s own terms, so we do not repeat them.

Kalshi

The longest-running CFTC-regulated exchange built for event contracts, with one of the broadest market menus.

Best for: Market variety

Why it ranks here

An official referral program with clear rules, but no fixed published amount — check your account's Rewards section.

Strengths

• Federally regulated exchange operating since 2021
• Broad market menu: sports, politics, economics, weather and culture
• Many funding options, including PayPal, Venmo and bank transfer
• Fees are published and fall to near zero at extreme prices

Limitations

• Sports contracts blocked or limited by court order in several states
• Taker fees are highest on contracts priced near 50¢
• The referral credit amount varies by account and expires in 7 days
• Subject of active state lawsuits, so availability can change quickly

Sign-up offer

Referral credits for new users (amount shown in your account)

The referral code must be entered at signup or within 72 hours, before your first deposit. Credits must be used within 7 days, and only the profits from them can be withdrawn. Confirmed on Kalshi's site October 4, 2026. Eligibility rules and terms apply. Official terms. Not available in: MA, MI, NV, UT, WA. 18+.

Visit Kalshi (opens the operator's site in a new tab) Read full review

Platforms with no verified offer

We looked for official offer terms on the other ranked platforms and on DraftKings Predictions. As of October 4, 2026:

• Robinhood. We found no official prediction-market sign-up offer in Robinhood’s help center or event-contract documentation.
• Novig. Novig’s promotion page title advertises a trade-credit offer, but the page did not load for us and we could not read its terms. We will list it once we can.
• DraftKings Predictions. DraftKings’ own terms include an archived promotion that ran from March 3 to April 6, 2026 and gave $50 in Predictions Dollars for a $5 qualifying trade in sports-eligible states. That offer has ended. Third-party sites advertise a newer offer, but we have not confirmed it in DraftKings’ terms.

We also found no current, official sign-up offer for Interactive Brokers, Coinbase, Crypto.com or Webull. Interactive Brokers reportedly pays an interest-style incentive on ForecastEx collateral; we have not confirmed the current rate, so it is not listed.

How promo credits work

A promotional credit is money you can trade with but not withdraw. When you use it to buy contracts, one of two things happens at settlement: the contracts expire worthless and the credit is gone, or they pay $1 each and the proceeds become withdrawable cash. In practice, a $25 credit is worth less than $25 in cash, because its value depends on the trades you place with it.

Read three conditions before you claim anything:

1. The trigger. A minimum deposit, a minimum trade, a referral code entered before a deadline, or a set number of trading days.
2. The expiry. Kalshi’s referral credits must be used within 7 days; FanDuel’s offer has a fixed end date.
3. What is withdrawable. In every program above, it is only the profits or settlement proceeds, never the credit itself.

Trading fees also reduce what a credit is worth in practice. For what a typical trade costs on each platform, see our guide to prediction market fees.

The CFTC’s view on incentive programs

On August 12, 2026, CFTC staff issued an advisory on how exchanges self-certify incentive programs, covering market-maker, liquidity and trading incentives (Staff Letter 26-23). Self-certification is the process by which an exchange files a rule or program with the CFTC, so the advisory is addressed to exchanges, not to traders. Its practical meaning for you is that trading incentives on a CFTC-registered exchange sit inside a regulated process, and they can change when the exchange files an amendment.

This is also why we link only to operator terms. A promotion described on an affiliate site may be outdated or may never have appeared in the operator’s filed program.

Trade responsibly

A sign-up credit is not a reason to open an account. Prediction-market contracts can expire worthless, and no offer changes that. Set a budget before you deposit, and see our responsible play resources if trading stops feeling like a choice.