Making a deposit at b399 is now easier than ever. Simply choose your preferred payment method, follow a few quick steps, and start playing instantly.
All the most popular payment options in Bangladesh, plus international methods supported
Bangladesh's number one mobile banking. Deposit in just seconds.
Deposit quickly and hassle-free via Nagad, the postal department's mobile banking service.
Send money securely to your b399 account via Rocket by Dutch-Bangla Bank.
The best option for large deposits straight from your bank account.
Deposit quickly and anonymously using Bitcoin, USDT, or Ethereum.
Deposit easily using Visa or Mastercard.
Add funds to your b399 account in a few simple steps and enjoy your favorite games.
Log in to b399.onl with your username and password. If you're new, complete your registration first.
Click "Deposit" from the top menu or select "My Wallet" on your dashboard.
BKash, Nagad, Rocket, Bank Transfer, or Crypto — pick whichever works best for you.
Enter the amount you wish to deposit and send the payment to the provided number.
Once payment is complete, submit your transaction ID or reference number on the b399 site.
Once verified, your balance will typically appear in your account within 3–5 minutes.
Depositing at b399 is a seamless experience — every step is designed with the user in mind. Since most people in Bangladesh rely on mobile banking, b399 supports bKash, Nagad, and Rocket as primary payment methods, making it possible to complete a deposit in just a few minutes from anywhere in the country, whether you're in a city or a rural area.
Many players wonder how safe it is to send money online. b399 takes no shortcuts on security. The platform uses SSL encryption, meaning every transaction is fully encrypted and invisible to third parties. There is also a two-factor authentication system in place to protect your account from unauthorized access.
One of the biggest advantages of depositing at b399 is zero processing fees. Many platforms deduct charges on deposits, but b399 doesn't — every amount you deposit goes directly into your wallet. This is especially beneficial for players who prefer to bet in smaller amounts.
Every deposit at b399 comes with the chance to earn great rewards. New members receive a 100% match bonus on their first deposit — deposit BDT 1,000 and you'll have BDT 2,000 to play with. The bonus can be used on slots, Live Casino, or Sports Betting.
The weekly reload bonus is another popular offer. Deposit at b399 every Monday and get an extra 20% to 30% bonus. VIP members enjoy exclusive deposit bonuses and personalized offers that give them even greater value. Keep checking b399's promotions page so you never miss a new deal.
The cashback program is also very popular at b399. If you have a net loss in any given week, b399 refunds a portion of that amount. This is especially encouraging for new players, as it lets you gain experience without taking on full risk.
| Method | Processing Time | Minimum | Fee | 24/7 |
|---|---|---|---|---|
| bKash | 1–3 Minutes | BDT 100 | Free | |
| Nagad | 1–3 Minutes | BDT 100 | Free | |
| Rocket | 1–5 Minutes | BDT 100 | Free | |
| Bank | 10–30 Minutes | BDT 500 | Free | |
| Crypto | 5–15 Minutes | $5 | Network Fee | |
| Card | 5–10 Minutes | BDT 500 | Free |
A few things to keep in mind for a smooth deposit experience at b399. First, always use a mobile banking number registered in your own name — using someone else's number may cause verification issues. Second, save your transaction ID after depositing, as it will come in handy if you ever need to resolve a problem.
Sometimes bank or mobile banking servers may experience temporary downtime. If this happens, please wait and avoid attempting multiple payments — doing so may result in duplicate charges. If your balance hasn't appeared within 15 minutes, contact b399's live chat support. Our 24/7 support team is ready to resolve any issue quickly.
Before making a large deposit, check b399's promotions page — deposit bonuses can double on special days. Timing your deposit right can get you significantly more value. b399 is always looking to give its players the best deals, so it's worth keeping an eye on those promotional offers.
Every transaction is secured with 256-bit SSL encryption. Your financial information remains completely private.
In most cases, your balance is credited within 3 minutes of a completed payment.
Our support team is always on hand to help with any deposit-related issues.
Enjoy a 100% bonus on your first deposit plus weekly reload bonuses.
Warning: b399 is for users aged 18 and above only. Please gamble responsibly and only deposit what you can afford.