The promo code field in Mostbet's registration form is easy to miss if you're clicking quickly — but skipping it costs you 25 percentage points on your welcome bonus. Enter MOST888 before confirming your account and you get 125% up to $400 instead of the standard 100%. This guide explains where the field is, how the bonus works, and what to do after registration.
Where Is the Promo Code Field?
The promo code field appears in the lower portion of the Mostbet registration form, typically just above the "Register" or "Create Account" button. It is labelled "Promo Code," "Bonus Code," or "Referral Code" depending on the platform version. On mobile, you may need to scroll down to see it. On some interfaces it is collapsed by default under a "Have a promo code?" link — tap that to expand the field.
Registration Promo Code for Mostbet 2027: MOST888
Type MOST888 in the promo code field exactly as shown. The code is active for the full 2027 promotional year and unlocks:
Sports: 125% first-deposit bonus up to $400, wager 5× on accumulators within 30 days.
Casino: 125% first-deposit bonus up to $400 + 250 free spins across 4 deposits, wager 35× on slots.
Full Registration Steps
Open Mostbet on web or app and click Register.
Choose your sign-up method: email, phone number, or social account.
Fill in personal details — name, date of birth, country, preferred currency.
Scroll to the promo code field and enter MOST888.
Select your welcome bonus: Sports or Casino.
Agree to the terms and submit the form.
Verify via SMS or email link.
Deposit from $1 — bonus credited automatically within minutes.
Bonus Value by Deposit Amount
Deposit | Bonus (125%) | Total Balance |
$100 | $125 | $225 |
$200 | $250 | $450 |
$300 | $375 | $675 |
$320+ | $400 (cap) | $720+ |
After Registration — Ongoing Rewards
Weekly cashback: up to 10% of losses returned every Monday, no wagering required.
Reload bonus: 50% up to $200 on future qualifying deposits.
Bonus shop: points from every bet redeemable for free bets, spins, and odds boosts.
VIP program: escalating cashback 5%–30% based on betting activity.
FAQ
Can I enter the code after I've already registered?
No — the promo code field is only available during sign-up. Once registration is complete, the field is locked.
Does the code work on the mobile app?
Yes — iOS and Android apps have the same promo code field at the same point in registration.
What if I made a typo in the code?
If the form accepted the code without an error, check your bonus balance after depositing. If no bonus appeared within 24 hours, contact support with your registration details.