First Deposit Welcome Bonus
100% bonus on your first deposit, available to new members. Minimum deposit of ৳500 required.
Weekly Cashback Offer
Get 5% to 18% cashback on losing bets each week, credited directly to your account based on your VIP tier.
IPL Free Bet Challenge
Place a bet on every IPL match this season and win up to 500 BDT in free bets daily.
Refer a Friend, Earn ৳300
Earn a 300 BDT bonus for every friend you refer who makes their first deposit. More friends, more rewards.
VIP Reload Bonus
A weekly exclusive reload bonus for Gold members and above. Fewer conditions, more value.
Eid Mega Bonus Package
This Eid ul-Adha, 40 KS is bringing a special Mega Bonus Package — deposit bonuses, free bets, and cashback all in one.
Side-by-Side Comparison of All Promotions
Browse all offers at a glance and pick the one that suits you best
| Promotions | Bonus Type | Amount | Wagering | Status |
|---|---|---|---|---|
| Welcome Bonus | Deposit Match | 100% / ৳5,000 | X5 | Active |
| Weekly Cashback | Cashback | 5–18% | No Conditions | Active |
| IPL Free Bet | Free Bet | ৳500/day | X3 | Hot |
| Referral Bonus | Referral | ৳300/referral | No Conditions | Active |
| VIP Reload | Reload Bonus | 50% | X4 | Gold+ |
| Eid Mega Package | Seasonal | Soon | — | Coming Soon |
| Birthday Bonus | Special Gift | Personal | X2 | Silver+ |
| Second Deposit Bonus | Reload | 50% / ৳2,500 | X6 | Hot |
What makes 40 KS promotions stand out?
The number of online betting platforms in Bangladesh is growing, but not all of them deliver on their promises. 40 KS takes a different approach — straightforward terms, no complicated withdrawal rules, and fresh offers every day.
On many platforms, the wagering requirements are so steep that bonuses rarely translate into real value. 40 KS doesn't work that way. Our cashback offers come with no wagering conditions — straightforward terms, real money.
Please Note: Always read the terms before claiming a bonus. Each 40 KS offer lists its validity period, wagering requirements, and eligible games in full on the promotions page.
How does the welcome bonus work?
The 40 KS welcome bonus is a real opportunity for new players. Deposit ৳1,000 and you'll instantly receive another ৳1,000 as a bonus — giving you ৳2,000 to start betting with.
To withdraw bonus funds, you need to place bets totaling five times the bonus amount. So for a ৳1,000 bonus, you'd need to wager ৳5,000. It's more straightforward than it sounds — a few weeks of regular play and you'll get there easily.
Weekly Cashback — Your Best Companion as a Regular Bettor
The weekly cashback offer is the top pick for regular bettors. Get back 5% to 18% of losing bets every week, depending on your VIP tier.
The best part? No separate application needed. Cashback is calculated every Monday morning and credited to your account by the afternoon. No wagering requirements — every penny you receive is yours to use or withdraw instantly.
"I used to think cashback meant a lot of hassle. But at 40 KS, it couldn't be simpler. Every Monday morning I check my balance and the cashback is already there. No application, no conditions."
— Abu Bakr Siddique, Gold VIP Member, BandarbanRefer & Earn — Bring Friends and Win More
The 40 KS referral program is simple. Get your unique referral link from your account dashboard. When a friend registers through your link and makes their first deposit, 300 BDT is instantly credited to your account.
There's no limit — the more friends you refer, the more you earn. And your referred friend gets a welcome bonus too, so it's a win for both of you.
Exclusive Promotions for VIP Members
40 KS's VIP program and promotions work hand in hand — the higher your tier, the better the offers. Gold members get a 50% reload bonus, Platinum members get a personal account manager and custom offers, and Diamond members enjoy a whole range of exclusive deals.
The birthday bonus is a fan favorite. Every Silver-tier member and above receives a special bonus credited directly to their account on their birthday — no code required, no application needed.
Second Deposit Bonus
The perks don't stop at your first deposit. 40 KS also gives you a 50% bonus on your second deposit — up to 2,500 BDT. Don't miss out on the extra boost when you come back for more.
Tournament & Event Bonuses
During major tournaments — cricket, football, or any other big competition — 40 KS launches special event offers. IPL, World Cup, Champions League: expect extra free bets, boosted odds, and leaderboard prizes. These offers are usually time-limited, so keeping your notifications on is a must.
How do I claim a bonus?
Activate your bonus in just a few simple steps
Register
Sign up at 40 KS — creating an account takes just a minute with your mobile number and a password.
View Promotions Page
After logging in, head to the Promotions section. You'll see all active offers — just pick the one that applies to you.
Deposit
Deposit easily with bKash, Nagad, or Rocket. The welcome bonus applies from a minimum deposit of 500 BDT.
Bonus Auto-Activated
The bonus is automatically credited to your account once your deposit is complete. No code or separate request needed.
Bet & Win
Bet using your bonus balance. Once the wagering requirement is met, you can withdraw at any time.
Welcome Bonus Offer Ending Soon
Frequently Asked Questions
Answers to Common Questions About Promotions