Exchange sign-up bonuses
The same side often costs a few cents less on one exchange than another, and Spot Angle shows you where it's cheapest. That only helps if you have an account there. These are the welcome offers right now. Last checked October 21, 2026.
Kalshi
New usersNew accounts get a bonus after their first $25 in trades. The amount depends on the link or code used ($25 through a friend's invite).
- •$10 minimum deposit
- •Trade $25 to unlock
- •Code within 72 hours of sign-up
- •Credit expires 7 days after it's issued
- •US only, ID check
Refer a friend: $25 for you and $25 for the friend who invited you.
Fees: About 7% × price × (1 − price) per contract, highest near 50¢.
Polymarket US
New usersDeposit $10 within 7 days of finishing sign-up and get $25 in trading credit. No qualifying trade needed.
- •$10 minimum first deposit
- •Enter the code or invite at sign-up
- •Credit isn't withdrawable cash
- •ID and location checks
Refer a friend: $25 each when a friend signs up with your invite and deposits $10.
Fees: Slightly under Kalshi's (about 6.95% × price × (1 − price)).
Novig
New usersDeposit $10 and get $50 in trade credits. Novig charges no fee on pre-game trades, so it's often the cheapest place to buy.
- •$10 minimum deposit
- •Credits are for trading, not withdrawal
- •Check Novig's terms for your state
Fees: No fee on pre-game trades.
ProphetX
New usersMake a first trade of $50 or more and get $75 in bonus funds, usually within a day. No rollover.
- •Minimum $50 first trade
- •Use the funds within 45 days
- •Not available in Nevada
Fees: Small fee on winnings (we assume about 2%).
Why have more than one account
A 2¢ difference on a 50¢ contract is a 4% better price, every time. Our board and alerts check all four exchanges and point you to the cheapest after fees. With accounts on two or more you can also catch the rare price gaps between exchanges.
Offers are set by each exchange, change often, and can differ by state and account. Always read the terms on the exchange before you deposit. Spot Angle may earn a referral reward when you sign up through our links, at no cost to you. Not affiliated with any exchange. Must be 18+ or 21+ depending on the exchange and your state. Trade responsibly; if gambling stops being fun, call 1-800-GAMBLER.