The Kalshi promo code BEST gets new users a $55 bonus. Sign up, verify your identity, and trade at least $25 in your first 7 days. The $55 lands in your account whether your trades win or lose.
The timing works well for fight fans. UFC 333 on October 24 has two title fights, Alexander Volkanovski vs. Movsar Evloev and Merab Dvalishvili vs. Petr Yan, and Kalshi already has fight-winner contracts on the whole card. Trade $25 across a few UFC 333 fights and your bonus is ready before UFC 334 on November 14. You can compare Kalshi's prices with the sportsbooks on our Kalshi UFC odds page.
Unlike a sportsbook bonus, this is trading credit on a CFTC-regulated exchange. You buy Yes or No contracts on outcomes, and the bonus works the same way. It is good on any market, but this page focuses on what it is worth to an MMA bettor: where Kalshi prices beat the sportsbooks, which UFC markets you can trade, and the fine print.
Every Kalshi promo code you will see advertised right now unlocks the same $55. BEST is ours, and using it supports BestFightOdds at no cost to you.
Is Kalshi legal?
Kalshi is a Designated Contract Market regulated by the Commodity Futures Trading Commission (CFTC). That lets it operate nationwide, including in states without legal sports betting such as California and Texas. You only need to be 18.
Sports contracts are another matter. As of October 2026, court orders or state action have limited Kalshi's sports markets in Michigan, Nevada, Washington, and Massachusetts. Other markets like economics and politics remain available there. Several other states are in active litigation with Kalshi, so the list can change quickly. The Kalshi app shows exactly what is available where you are.
Want to compare Kalshi with Polymarket US, FanDuel Predicts, DraftKings Predictions and the rest? See our guide to the best prediction markets, with current bonuses, fees and state availability for each app.
Promo code terms & conditions
These are the key points from Kalshi's official promo code terms:
- Bonus: $55 in bonus credit, a fixed amount for every qualifying new user.
- Who qualifies: New Kalshi members only. You must be a US person, 18 or older, pass Kalshi's identity verification (KYC), and not have held a Kalshi account before.
- What you have to do: Trade at least $25 on Kalshi's Predictions contracts within 7 days of opening your account. A winning trade is not required.
- Using the bonus: The credit must be used to trade within 7 days of being granted, or it expires.
- Withdrawing: The credit itself cannot be withdrawn. Once you have traded an amount equal to the bonus, it can be withdrawn under Kalshi's standard account terms.
- One per person: One promo code per account, and it cannot be combined with another referral link at sign-up.
Kalshi can change or end the offer at any time. Read the full terms at kalshi.com/tc/55 before you sign up.
How to claim the Kalshi bonus
Follow these steps to activate your sign-up bonus:
Sign-up bonus breakdown
Here is what the Kalshi welcome offer includes:
Is there a Kalshi bonus for existing users?
The welcome bonus is a one-time perk, but Kalshi has a few ongoing extras. The refer-a-friend program pays $25 to you and your friend when they sign up and trade $25, up to a cap. Kalshi also pays a variable 3.50% APY on cash balances that average $250 or more, which no traditional sportsbook offers.
For MMA bettors, the bigger long-term value is pricing. On the UFC 333 card we tracked, Kalshi's built-in margin averaged about 4%, against roughly 6% at FanDuel. That saves you money on every trade, not just the first one.
Kalshi review
Kalshi is a CFTC-regulated prediction market that lets you trade on the outcome of real-world events, including MMA fights, elections, inflation data, and much more. It is a New York-based company regulated at the federal level by the Commodity Futures Trading Commission, making it available nationwide.
Functionally, Kalshi is similar to a sportsbook: you can earn a profit by making predictions on upcoming fights. However, it is completely different from a legal standpoint. You do not place wagers against the house. Instead, you trade contracts with other users, and Kalshi takes a small fee for hosting the trades.
If you think a fighter will win, you buy yes contracts. If not, buy no contracts. It is similar to making yes/no predictions on a futures exchange, just applied to sporting events instead of commodities.
Kalshi vs. DraftKings
Here is a snapshot of how Kalshi compares to DraftKings Sportsbook in a range of important areas:
| Feature | Kalshi | DraftKings |
|---|---|---|
| Fight winner markets | Yes | Yes |
| Props (round, method, over/under) | Select fights only | Yes |
| Parlays | Combos (all legs must win) | Yes |
| Live position trading | Yes (buy/sell anytime) | Limited (cash out at sportsbook discretion) |
| House edge | No built-in vig; bid/ask spread plus a fee of up to 1.75% | Built-in vig (often 4%-5% on MMA) |
| Availability | Nationwide (some state restrictions on sports) | 26 states |
| Age | 18+ | 21+ (most states) |
| Position limits | No limits on winners | Limits common for sharp bettors |
| Interest on balance | 3.50% APY | No |
| Bonuses | $55 welcome bonus (code BEST), refer-a-friend | Large welcome bonus, odds boosts, rewards program |
User experience & mobile app
Kalshi offers a clean, intuitive interface for trading event contracts. The platform is available on web and mobile, with a straightforward layout that displays contract prices, order books, and your portfolio at a glance. The trading slip is simple to use. Tap the Yes or No button on any contract, enter your dollar amount, and the slip calculates your potential payout instantly. You can also set limit orders to buy or sell at specific prices.Key features
Kalshi contracts are priced in probabilities. If a fighter wins, each contract settles at $1. If they lose, it settles at $0. For example, if a fighter is priced at $0.67, traders give them a 67% chance of winning.
To trade, tap the green Yes button at the displayed price. Enter your dollar amount and the slip shows how many contracts you are buying and your potential payout.
This chart shows you how some of the most common Kalshi prices translate to traditional odds:
| Kalshi price | Implied probability | Moneyline equivalent |
|---|---|---|
| $0.80 | 80% | -400 |
| $0.67 | 67% | -203 |
| $0.60 | 60% | -150 |
| $0.50 | 50% | +100 |
| $0.40 | 40% | +150 |
| $0.30 | 30% | +233 |
| $0.20 | 20% | +400 |
How Kalshi prices compare to sportsbook odds
These are Kalshi prices on the UFC 333 card, converted to moneyline odds, next to FanDuel and Caesars. Data comes from the BestFightOdds odds feed on October 19, 2026. “Margin” is the built-in edge on both sides combined; lower is better for you.
| Fight | Kalshi | FanDuel | Caesars |
|---|---|---|---|
| Dvalishvili to beat Yan | +140 | +142 | +145 |
| Yan to beat Dvalishvili | -168 | -184 | -175 |
| Margin: | 4.4% | 6.1% | 4.5% |
| Volkanovski to beat Evloev | -112 | -113 | -115 |
| Evloev to beat Volkanovski | -103 | -113 | -105 |
| Margin: | 3.6% | 6.1% | 4.7% |
| Murzakanov to beat Reyes | -209 | -220 | -230 |
| Reyes to beat Murzakanov | +173 | +168 | +190 |
| Margin: | 4.3% | 6.1% | 4.2% |
| Yakhyaev to beat Krylov | -431 | -500 | -450 |
| Krylov to beat Yakhyaev | +372 | +340 | +350 |
| Margin: | 2.4% | 6.1% | 4.0% |
| Dawson to beat Aliev | -126 | -132 | -130 |
| Aliev to beat Dawson | +109 | +104 | +110 |
| Margin: | 3.6% | 5.9% | 4.1% |
Kalshi had the lowest or near-lowest margin on every fight, and it beat FanDuel on all of them. It is not “zero juice”: the gap between the Yes and No prices works like a spread. Kalshi’s trading fee comes on top, but the prices are usually still better than the sportsbooks’. Lines move, so check the current numbers on our live Kalshi UFC odds page before you trade.
Pros & cons
Pros
- Lower margins than most sportsbooks on UFC fights (about 4% vs 6% at FanDuel on UFC 333)
- CFTC-regulated exchange available nationwide
- 18+ age requirement (vs 21+ at most sportsbooks)
- Buy and sell contracts anytime to lock in profits or cut losses
- Fight-winner contracts on every UFC card, plus Combos
- Variable 3.50% APY on cash balances of $250+
- $55 welcome bonus with no winning trade required
Cons
- Method, round, and distance props only on select fights
- Sports contracts restricted in Michigan, Nevada, Washington, and Massachusetts
- Bonus is trading credit that expires 7 days after it is granted
- Fees of up to 2% on card and mobile wallet deposits
- Legal landscape is still changing state by state
MMA/UFC betting markets
Kalshi lists fight-winner contracts on every UFC card, numbered events and Fight Nights alike. As of October 19, the whole UFC 333 card is open for trading. Kalshi has also listed method of victory, round of finish, and go-the-distance markets for select fights, along with title-holder futures for most UFC divisions. Those are less consistent than fight-winner markets, so do not count on them for every bout.
Combos let you bundle several contracts into one position, similar to a parlay. Combos pay only if every leg wins, and once filled they cannot be cancelled.
Kalshi has also offered contracts on Dana White’s Contender Series and on major boxing fights. If you want deep MMA props such as rounds over/under or exact round, a traditional sportsbook still has more options. You can compare both on our Kalshi UFC odds page, which shows live Kalshi prices next to the best sportsbook line for every upcoming fight.
Live betting & bet limits
One key advantage of Kalshi over sportsbooks is the ability to sell your contracts before an event finishes. For example, if you buy yes contracts at $0.55 on a fighter and they dominate the first round, you might be able to sell your contracts at $0.78, locking in a 41.8% profit without waiting for the final result.
This is similar to cashing out at a sportsbook, but you will generally get much better terms when selling contracts on an exchange compared to sportsbook cash-out offers.
Payment methods
Kalshi supports the following deposit and withdrawal methods:
| Method | Deposit | Withdrawal |
|---|---|---|
| Visa / Mastercard | Yes (up to 2% fee) | Yes ($2 fee per transaction) |
| Apple Pay / Google Pay | Yes (up to 2% fee) | No |
| Bank transfer (ACH) | Yes | Yes |
| Crypto (USDC, BTC, SOL, WLD) | Yes | Yes |
| eWallets (PayPal, Venmo) | Yes | Yes |
| Wire transfer | Yes | Yes |
Withdrawals at Kalshi
Contracts will settle after a fight ends, and your payout should then be available within two hours. These are the options:| Method | Fee | Average Speed | Minimum | Maximum |
|---|---|---|---|---|
| Debit card | $2 per transaction | Up to 30 minutes | $10 | $2,500 |
| Bank transfer (ACH) | None | 3-5 days | $10 | None |
| Wire transfer | None (providers charge fees) | 3-5 days | $1,000 | None |
| Crypto | No Kalshi fees (network fees apply) | Up to 30 minutes | $10 | None |
| eWallets (PayPal, Venmo) | None | Up to 30 minutes | $10 | $5,000-$30,000 |
Customer support
Kalshi is a Designated Contract Market with SOC 2 Type II compliance for data security. Full KYC checks are required, and traders receive 1099 tax documents for U.S. tax reporting. Security features include:- Compliance with NIST security guidelines
- Cloud-native infrastructure on Amazon Web Services
- High-level encryption, data masking, and anonymization
- Multi-factor authentication
Frequently asked questions
<p>The Kalshi promo code is <strong>BEST</strong>. New users who sign up with it and trade $25 within their first 7 days get a $55 bonus.</p>
<p>Yes, as long as you qualify. You must be a new user, 18 or older, pass identity verification, and trade $25 within 7 days of opening your account. Your trades do not have to win.</p>
<p>No. The codes advertised on other sites unlock the same $55 offer under the same terms. Pick one code, because only one can be used per account.</p>
<p>Yes. The bonus works on any Kalshi market, including fight-winner contracts on every UFC card. You can use it on UFC 333 on October 24; see current prices on our <a href="/kalshi/odds/">Kalshi UFC odds</a> page.</p>
<p>Not right away. The bonus credit must be used within 7 days. Once you have traded an amount equal to the bonus, it can be withdrawn under Kalshi’s standard terms. Profits from your trades are cash.</p>
<p>Yes. Kalshi calls them Combos. You bundle several contracts into one position, and it pays only if every leg wins.</p>
<p>Kalshi operates nationwide for anyone 18 or older. As of October 2026, sports contracts are restricted in Michigan, Nevada, Washington, and Massachusetts. Other markets are still available there.</p>
<p>No. It works in a similar way, but legally Kalshi is a CFTC-regulated exchange. You trade contracts with other users rather than betting against a house.</p>
<p>Yes. You can sell at any time before the contract settles, either to lock in a profit or to cut a loss.</p>
<p>You must be 18 or older and complete Kalshi’s identity verification with a government-issued photo ID.</p>
How we rate sportsbooks
Our 4/5 rating for Kalshi is based on the following criteria:
About the author
Editorial disclosure: Best Fight Odds maintains strict editorial independence. Our reviews are based on thorough testing and analysis. This page may contain affiliate links. When you sign up through these links, we may earn a commission at no extra cost to you.
21+ only. Gambling involves risk. Please bet responsibly. If you or someone you know has a gambling problem, call 1-800-GAMBLER or visit ncpgambling.org. All information is accurate as of October 19, 2026. Terms and conditions apply.