Prediction Market Promos – Over $300 in Bonuses for March

With March Madness and US elections, every major prediction market is competing for your first trade with promo codes and welcome offers. The prediction market bonuses range from $10 to $25 in free money to $75 in matched credits depending on the site you choose.

We pulled everything into one place, including every active promo code, step-by-step claim instructions, and breakdowns of what each site is offering. Promo codes are required on sign up, so use the click to copy button where listed.

Best prediction market bonuses and promo codes

(Bonus codes last used March 17, 2026)

Here’s who has the best offer and why

As you can see from above, there are multiple offers on the table this weekend for March Madness. Here’s how we ranked the top promos:

1. FanDuel Predicts: Best promo offer if you’re trying prediction markets for the first time. This is the only prediction markets site with a no deposit, no trade requirement. Simply complete a KYC check and the $25 lands in your account. It’s the only offer on this page where you risk literally nothing to get started and no promo code required.
2. Kalshi: Best promo offer for anyone ready to trade today. Place $10 in contracts on any market — March Madness, NBA, politics, anything — and the $10 hits your account automatically. You will be required to use the promo code DEFI on sign up.
3. OG Predictions: Best offer if you’re planning to trade volume this weekend. The more you trade, the more you earn, up to $100 across five days. If you’re going deep on bracket markets, this one pays you back for it. Note, this site has significantly less volume than Kalshi or Polymarket, but it does run through Crypto.com. No promo code required.

Related: World Cup Odds – Odds on March Madness – Election betting odds

Kalshi free $10 promo

Get $10 free with $10 in trades with promo code DEFI

Kalshi is the most complete prediction market site. You get access to game outcome markets, player props, and live in-game trading where prices shift as the game progresses. The site recently rolled out over 20 prop markets, plus the ability to trade on totals. The $10 bonus is the most straightforward. Join Kalshi and use the code DEFI at signup, place $10 in trades, and the bonus hits your account.

The exchange pays ~4% APY on uninvested cash. All markets usually settle within 2 hours of market resolution. For your bonus, stick to high-volume markets where there’s enough activity to match your trades quickly. We cover the full terms and conditions on our Kalshi promo code page.

FanDuel free $25 no deposit promo

Get $25 free, no-deposit required

FanDuel Predicts is offering a free $25 for new accounts. The Fanduel predictions app launched in late 2025 through a partnership with CME Group and allows you to trade on the Oscars, March Madness, NBA, S&P 500 futures, Nasdaq, gold, natural gas, Bitcoin, and EUR/USD — all live in the app now. Sports event contracts are only available in states where sports betting isn’t legal, but financials and commodities are open everywhere.

Getting the $25 requires completing an eligibility check through FanDuel Prediction Markets LLC — you’ll answer a short series of financial background questions covering employment, estimated income, net worth, and source of funds. This is the difference from traditional sports betting and prediction markets. You are essentially opening a brokerage account, but it does move quickly and the $25 is there when you’re done. Deposits go in via debit card or online banking only. Sports trading is legally avalable in

If you’re in a state with legal sports betting, you qualify for the FanDuel Sportsbook promo instead. Bonus bets credit within 72 hours and expire after 7 days. See everything you need to know in our FanDuel promo code page.

OG Predictions

Get up to $100 Big Game Bonus with volume milestones

OG is a new prediction market by Crypto.com, covering sports, crypto, politics, economics and culture. The site offers game winner, MVP, player props, total touchdowns, first timeout, overtime and parlay markets. The app offers more markets than the original Crypto.com and is built similar to what you see coming from Kalshi and Polymarket. OG launched with an exclusive VIP program, referral bonuses and welcome bonuses.

New users who sign up now can earn up to $100 in bonuses by hitting volume milestones during the trading period. Bonuses are credited immediately as you reach each tier and can be used to offset trading costs and fees. You do not need a promo or bonus code for this offer. Full details and terms and conditions in our OG.com bonus review.

Polymarket welcome offer

$10 bonus with invite code

Polymarket is the world’s largest prediction market by volume. New US users can skip the waitlist and get $10 credited to their account by entering the promo code TWITTER at signup. You’ll need to register with a phone number to qualify—the promotion originated from the X/Twitter community but is open to everyone.

The platform runs on the Polygon blockchain with all trading denominated in USDC. You can deposit via crypto transfer or purchase USDC through MoonPay. Settlement is instant once markets resolve, and withdrawals process within minutes depending on network conditions.

For Super Bowl, Polymarket offers broader mention market rules than Kalshi in addition to more prop markets. Compare Super Bowl odds for Kalshi and Polymarket here. Polymarket also pays Liquidity Rewards daily to traders who place limit orders that keep markets balanced.

DraftKings welcome offer

Up to $75 in Prediction Dollars

DraftKings Predictions matches your first trade dollar-for-dollar up to $75 in Predictions Dollars. You need to opt into the promo through the app before placing your trade, and the trade must come from deposited cash—not existing bonus funds. The bonus typically credits immediately, though delays up to 72 hours can happen.

The key limitation is that Predictions Dollars can’t be withdrawn directly. However, any profits you make trading with them go to your cash balance and can be withdrawn. The bonus expires after one year if unused, and each reward must be used on its own trade—you can’t combine multiple Predictions Dollars on a single position.

The promo is only available in states where DraftKings offers sports event contracts. Market selection is thinner than Kalshi or Polymarket. Expect to see game winner and basic player props, but no mention markets or granular props. DraftKings is also running a $1 million sweepstakes tied to the launch of markets.

Fanatics welcome offer

Up to $75 in match credits

Fanatics Markets IB is the newest CFTC-regulated prediction market, launched in December 2025 through a partnership with Crypto.com. The platform covers sports, finance, economics, and politics, with crypto, pop culture, and tech markets coming in early 2026. For the Super Bowl, you can trade on game outcomes.

One thing to note on the bonus: if you deposit via debit card or Apple Pay, those funds must be traded through before your matched credit applies. For other deposit methods, your credit is used first. Credits cannot be withdrawn until traded. Credits are added within 72 hours of your first eligible trade.

Coinbase welcome offer

$5 BTC + Spin the Wheel (up to $200)

Coinbase added prediction markets through its Coinbase Financial Markets division in Jan. You can trade event contracts on sports, politics, economics, and more directly alongside your crypto holdings. The funds flow between your main account and prediction markets seamlessly. Super Bowl and all sports markets are routed through Kalshi’s exchange.

New users get a guaranteed $5 in Bitcoin after creating an account and verifying identity. After your first crypto purchase, you spin a promotional wheel with rewards between $3 and $200 in BTC. Most users land on the lower end—only about 11% win more than $6—but the upside is there if you get lucky.

If you already have a Coinbase account, you can access prediction markets without any additional signup. Just open a Coinbase Financial Markets futures account through the app. The prediction markets interface is integrated into the main Coinbase experience, making it the easiest on-ramp for anyone already holding crypto.

How to claim your trading bonus

Using Kalshi as an example, here’s how to claim your sign-up bonus:

1. Download the app or visit kalshi.com – Kalshi is available on iOS, Android, and web. Click “Sign Up” to start.
2. Create your account – You can register with email or sign in with Apple/Google. You’ll need to provide your full legal name, email address, phone number, date of birth, home address (no P.O. boxes or commercial addresses), and Social Security Number. The SSN is required for tax reporting—EINs and ITINs are not accepted.
3. Enter your promo code – Input code DEFI when prompted during registration. If you forget, you can still add it when you attempt to deposit funds—just make sure it’s entered before completing identity verification.
4. Verify your email and phone – Kalshi sends a 6-digit code to each. Check your spam folder if the email code doesn’t arrive within 20 minutes.
5. Complete identity verification – Upload a government-issued ID (driver’s license or passport). Kalshi uses Verify.com for KYC. Verification typically completes within minutes but can take up to 48 hours.
6. Fund your account – Minimum deposit is $1. Bank transfers (ACH) are free but take 1-3 business days. Debit cards are instant with a 2% fee and $2,500 daily limit. Wire transfers have a $1,000 minimum and clear same or next business day with no Kalshi fee. Crypto deposits (USDC, BTC, SOL, WLD) support up to $500,000 daily and process in about 30 minutes with standard network fees. Apple Pay is also available.
7. Place $10 in trades – You have 90 days to hit the threshold. Trades can be spread across multiple markets—no need to place $10 in a single position. Your trades don’t need to win.
8. Receive your bonus – Once you cross $10 in trading volume, Kalshi automatically credits $10 to your account. The bonus expires after 30 days if unused and must be rolled over once (traded) before you can withdraw it. The promo is not available in AZ, IL, MA, MD, MI, MT, NJ, NV, and OH. You must be 18+ and physically located in an eligible state.

The claim process for welcome offers will vary by app and exchange. Polymarket requires a crypto wallet and USDC deposit, while DraftKings Predictions requires new traders to opt into the promo through the app before the first trade. Remember to always enter the promo codes during registration. Welcome offers cannot be applied retroactively.

Types of bonuses and rewards

Prediction markets use several types of sign-up incentives and ongoing rewards to attract new traders. It’s good to take advantage of at least two so you can use them to shop for pricing. Here’s how each type works:

Trade bonuses

Trade bonuses are the most common prediction market promos available. When you sign up, you receive bonus funds after completing a certain volume of trades. This is typically $100 within 30-90 days. Kalshi’s $10 bonus is a perfect example of a trade bonus: place $10 in trades (win or lose), and the bonus credits automatically. Trade bonuses usually require a single rollover before withdrawal, meaning you need to trade the bonus amount once before cashing out.

Deposit matches

Some platforms match a percentage of your first deposit or trade. DraftKings Predictions offers a 100% match up to $75—deposit and trade $75, get $75 in Predictions Dollars. Unlike trade bonuses, deposit matches typically come as platform credits that can’t be withdrawn directly. You keep the profits from trades made with matched funds, but the bonus itself stays on the platform.

Referral bonuses

Most platforms offer bonuses for bringing in new users. Kalshi’s referral program gives both you and your friend $10 when they complete $100 in trades. Polymarket has run similar referral campaigns. These stack with sign-up bonuses—a referred user can claim both the referral bonus and enter a promo code.

Crypto rewards and staking bonuses

Crypto.com ties its bonuses to staking CRO, their native token. You’ll get $10 if you stake 1,000-4,999 CRO, or $50 for 5,000 or more, which means you need to hold CRO to qualify. Coinbase keeps it simpler and lets you spin a wheel after any crypto purchase, with rewards ranging from $3 to $200 in Bitcoin.

Liquidity and volume rewards

Both Kalshi and Polymarket pay traders for market-making activity—placing limit orders that keep spreads tight and markets liquid. These aren’t sign-up bonuses, but they’re ways to earn beyond betting on outcomes.

Polymarket pays liquidity rewards daily at midnight UTC. Each eligible market displays three parameters: total daily rewards (the USDC pool), max spread (how close to midpoint your orders must be), and minimum shares (smallest qualifying order size). 

If you place limit orders on both sides of a market that fall within the max spread threshold, you earn a share of that day’s pool based on your order size and how long it stays open. Two-sided liquidity earns nearly 3x the rewards of single-sided orders. 

Polymarket also pays 4% APY on positions held in eligible longer-term markets like 2028 election futures. Check polymarket.com/rewards to see which markets currently offer incentives.

Kalshi is running two incentive programs, valid through September 1, 2026:

• Volume Incentive Program: Cashback rewards based on trading volume. Eligible trades are buys/sells between $0.03 and $0.97 per contract. Reward pools range from $300 to $10,000 per market, with payouts capped at $0.005 per contract traded. Markets with active volume incentives show a green diamond icon.
• Liquidity Incentive Program: Rewards for resting orders that improve market depth. Kalshi takes snapshots every second during trading hours and scores your orders based on size and proximity to best prices. Orders don’t need to fill to earn rewards—you’re paid for maintaining liquidity. Markets with liquidity incentives show a blue diamond icon.

Both apps also pay interest on idle funds. Kalshi currently offers ~3.25% APY on cash and open positions (minimum $250 balance, paid monthly). Polymarket’s 4% holding rewards apply only to select long-dated markets like 2028 presidential election futures.

What to look for in prediction market promos

Before claiming a bonus, check these key terms:

Minimum deposit

Most prediction market bonuses require a deposit to activate. Kalshi’s minimum is just $1, though you’ll need to trade $100 to unlock the bonus. DraftKings Predictions has no stated minimum but requires deposited funds (not existing credits) for the first trade.

Trading requirements

This is the volume of trades you need to place to unlock or withdraw your bonus. Kalshi requires $100 in trades within 90 days—a low bar for active traders, but something to track if you’re just testing the platform. DraftKings matches your first trade immediately with no additional requirements. Always check whether the requirement is based on trade volume (total amount wagered) or net deposits.

Bonus restrictions

Most promos are limited to new users with one account per person, and platforms verify this during signup. Creating a second account to double-dip will get both accounts flagged for bonus abuse. You’ll need to complete identity verification before withdrawing, which means uploading documents and waiting for approval, so factor that into your timeline if you’re trying to cash out.

 Bonuses typically come with time limits on both claiming them and meeting any trading requirements, and some bonus funds can’t be withdrawn directly until you’ve traded with them first. It’s important to read the terms and conditions beforehand as winnings can count as taxable income whether you withdraw them or not.

Promo code timing

Enter codes during registration when possible. Kalshi lets you add a code before identity verification if you forget, but most platforms won’t apply codes retroactively. DraftKings Predictions requires opting into the promo through the app before your first trade—place the trade first, and you lose the match.

Where to go from here

If you’re new to prediction markets, Kalshi is the easiest on-ramp. You can fund with a debit card or bank transfer and the app feels like a stock trading platform.

If you already have crypto sitting in a wallet, Polymarket makes more sense. You can deposit USDC directly, so there’s no trading requirement for the $10 bonus. The app also lists markets you won’t find anywhere else, including mention markets where you’re betting on whether someone will say a specific phrase during airtime.

If you’re a DraftKings user who wants to stick with familiarity, their Predictions product works well enough, though limited in scope to the other two. The $75 match is the largest raw bonus value available. The downside is fewer markets and bonus credits that can’t be withdrawn directly.

If you want all of the bonuses, claim them. Nothing stops you from taking advantage of Kalshi’s $10, Polymarket’s $10, and DraftKings’ $75 on the same day. They’re independent platforms with separate promos, and having accounts at multiple exchanges lets you shop for better prices on the same markets.

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