CIR animation

We compare crypto platforms and may earn a commission at no extra cost to you. Learn more

Coin Interest RateCoin Interest Rate
Email Alerts

CIR Rankings · Promo Codes & Bonuses

Best Prediction Market Promo Codes & Bonuses

Compare CIR-listed prediction market referral codes, sign-up bonuses and sports offers, with qualifying deposits, trading requirements and terms to check.

5 ranked picksCIR editorial researchData: CIR-listed offers · Confirm current terms before signing up
Why trust Coin Interest Rate?

Our team independently tracks and reviews crypto rates, rewards and product features to help readers compare more than the advertised rate. We use official provider websites, product documentation and other relevant sources when evaluating products.

  • 80+ crypto platforms tracked across staking, lending, cards and other digital asset products.
  • Hundreds of rates tracked alongside features, availability and key risk factors.
  • Independent comparisons. Compensation does not guarantee favorable coverage. Editorial control remains ours.
Read our full methodology

Compare event-market bonuses and separately identified sports offers from CIR’s existing promo listings. Start with the qualifying deposit or trading requirement, then check your location and the reward’s restrictions. Polymarket US is a separate product from international Polymarket.

Risk note: Event and sports trading can result in losses. A bonus does not protect your deposit or guarantee a profit. Eligibility and product rules vary by location. Must be 21+. Gambling problem? Call 1-800-GAMBLER. Disclosure: Rates and terms change. Some outbound links may compensate Coin Interest Rate. Affiliate terms do not impact our editorial reviews.

The short list

Compare the listed offers

1Event market bonus

Polymarket US

CIR-listed offer

$25 bonus with $10 deposit

2Event market bonus
Kalshi

Kalshi

CIR-listed offer

$25 bonus when you trade $25

3Event market bonus
OG.com

OG.com

CIR-listed offer

$10 bonus

4Sports offer
Novig

Novig

CIR-listed offer

$50 bonus with $10 deposit

5Sports offer
ProphetX

ProphetX

CIR-listed offer

Trade $40 Get $40

Compare the picks

Compare the listed benefits and requirements. Missing conditions are marked for confirmation rather than treated as no requirement.

PickCategoryCIR-listed offerListed qualificationCode / activation
Polymarket USEvent market bonus$25 bonus with $10 deposit$10 deposit listedCOIN
KalshiEvent market bonus$25 bonus when you trade $25$25 trading listedCOIN1
OG.comEvent market bonus$10 bonusConfirm qualifying activitygpttyf5q
NovigSports offer$50 bonus with $10 deposit$10 deposit listedCOIN
ProphetXSports offerTrade $40 Get $40$40 trading listedCOIN

Detailed review

How each offer works

Polymarket US logo

#1 · Event market bonus

Polymarket US

CIR-listed offer

$25 bonus with $10 deposit

Reward category
Event market bonus
Listed qualification
$10 deposit listed
Code / activation
COIN

Use the separate Polymarket US product. The listed deposit requirement does not establish withdrawal eligibility or every campaign condition.

Why consider it

  • +A copyable code is available alongside the offer link.
  • +Open the dedicated CIR offer page for additional context.

Tradeoffs to check

  • !Listed amounts come from CIR promo data; complete current campaign terms are not independently confirmed here.
  • !Confirm new-user eligibility, location, expiry, reward type and withdrawal conditions before committing funds.
Offer detailsCheck offer
Kalshi

#2 · Event market bonus

Kalshi

CIR-listed offer

$25 bonus when you trade $25

Reward category
Event market bonus
Listed qualification
$25 trading listed
Code / activation
COIN1

Qualifying trading is different from depositing. Trading fees and losses can reduce or exceed the value of a reward.

Why consider it

  • +A copyable code is available alongside the offer link.
  • +Open the dedicated CIR offer page for additional context.

Tradeoffs to check

  • !Listed amounts come from CIR promo data; complete current campaign terms are not independently confirmed here.
  • !Confirm new-user eligibility, location, expiry, reward type and withdrawal conditions before committing funds.
Offer detailsCheck offer
OG.com

#3 · Event market bonus

OG.com

CIR-listed offer

$10 bonus

Reward category
Event market bonus
Listed qualification
Confirm qualifying activity
Code / activation
gpttyf5q

The stored offer lists a reward but does not specify the complete deposit, trading or payout conditions.

Why consider it

  • +A copyable code is available alongside the offer link.
  • +Open the dedicated CIR offer page for additional context.

Tradeoffs to check

  • !Listed amounts come from CIR promo data; complete current campaign terms are not independently confirmed here.
  • !Confirm new-user eligibility, location, expiry, reward type and withdrawal conditions before committing funds.
Offer detailsCheck offer
Novig

#4 · Sports offer

Novig

CIR-listed offer

$50 bonus with $10 deposit

Reward category
Sports offer
Listed qualification
$10 deposit listed
Code / activation
COIN

This is a sports-focused offer. Check the current product structure, eligible states and whether the reward is cash or restricted credit.

Why consider it

  • +A copyable code is available alongside the offer link.
  • +Open the dedicated CIR offer page for additional context.

Tradeoffs to check

  • !Listed amounts come from CIR promo data; complete current campaign terms are not independently confirmed here.
  • !Confirm new-user eligibility, location, expiry, reward type and withdrawal conditions before committing funds.
Offer detailsCheck offer
ProphetX

#5 · Sports offer

ProphetX

CIR-listed offer

Trade $40 Get $40

Reward category
Sports offer
Listed qualification
$40 trading listed
Code / activation
COIN

This is a sports-focused offer with a trading condition. Confirm the reward type, eligible states and any withdrawal restrictions.

Why consider it

  • +A copyable code is available alongside the offer link.
  • +Open the dedicated CIR offer page for additional context.

Tradeoffs to check

  • !Listed amounts come from CIR promo data; complete current campaign terms are not independently confirmed here.
  • !Confirm new-user eligibility, location, expiry, reward type and withdrawal conditions before committing funds.
Offer detailsCheck offer
How we chose these picks
  1. 1.We select specific offers from existing CIR promo data and exclude hidden platforms, retired offers and entries marked expired or excluded from listings.
  2. 2.The order groups offers by understandable qualification details and reward category. It is not a verified ranking of net dollar value or platform safety.
  3. 3.Generic invite codes with no documented benefit are excluded. Missing deposit, deadline or payout terms must be confirmed with the provider.
  4. 4.Sign-up rewards, fee discounts and sports offers are identified separately. An advertised maximum is not a guaranteed reward.
Read the full Coin Interest Rate methodology

Check these terms before claiming a bonus

Open the offer link before registering and confirm that the code or referral benefit appears. Save the applicable campaign terms and check whether the reward is cash, crypto, fee cashback or restricted trading credit.

  • Confirm country or state eligibility and identity verification requirements.
  • Check minimum deposits, qualifying trading volume, deadlines and holding periods.
  • Include trading fees and withdrawal charges when assessing the reward.
  • Do not increase trading or take leverage solely to unlock a bonus.

Frequently asked questions

Are these bonuses guaranteed?

No. These are CIR-listed offers, subject to the provider’s current campaign terms. Eligibility, qualifying activity, expiry and reward restrictions must be confirmed before signing up.

Do I need to enter a promo code?

Some offers use a code and others use a referral link. Where a code is listed, copy it and confirm it is accepted during registration. A referral link may still be required.

Is a fee discount the same as a cash bonus?

No. A fee discount reduces eligible trading fees. A bonus may be cash, crypto or restricted credit and can require deposits or trading activity.