Betting Frenzy: 2025's Best Sports Betting Bonuses & Promotions in Japan

Last Updated on 06/07/2025
Fact checked by: Ethan Blackwood

Sports betting sites regularly thrill players with bonuses and promotions. These offers are available in different types, but you must opt for the best betting bonus in Japan for an optimal experience.

As a Japanese bettor, you receive a welcome bonus the first time you sign up on a gambling site. Beyond that, other promos like reloads, cashback, bonus bets, and enhanced odds are usually available. There’s a huge choice, but to make it easier, you’ll find some of the best bonuses currently available displayed in the banners of this page.

šŸŽ Redeem the best betting bonuses in Japan for 2025

Bet365
We recommend
Wagering (WR): 1x Bonus
Min. Deposit: $10
Min. Odds: -500
Bet365 Promo
Get $150 in Bonus Bets Win or Lose when you bet $5!
USA
USA Players Welcome
T&Cs and 21+ apply
Best Alternative
Deposit Methods
Find out more on Bet365.
Withdrawal
0 – 10 Days
Apps
License
Virginia (US) Lottery Board
Award
EGR – Operator of the year (2017)
GAMBLING PROBLEM? CALL OR TEXT 1-800-GAMBLER (AZ/CO/IL/IN/KY/LA/NC/NJ/OH/PA/TN/VA) or 1-800-BETS OFF (IA). 21+ only (18+ in KY). Must be present in AZ/CO/IA/IL/IN/KY/LA(select parishes)/NC/NJ/OH/PA/TN/VA. *This Referral Code is used for marketing/tracking purposes only. Minimum wager $5. Minimum odds -500 or greater. $10 minimum deposit. Paid in Bonus Bets. Bonus Bets wager excluded from returns. New customers only. Available in app only. Max. prize, game restrictions, time limits and T&Cs apply.
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šŸ’” Should you claim the best betting offers in Japan?Ā 

Before I go any further, there’s an important question to answer. Most bettors usually ponder whether claiming bonuses on online betting sites is ideal. Well, the way I see it, there can be plenty to leverage when you claim a bonus, but it depends entirely on the gambling platform’s T&Cs.

Bonus offers vary from one betting site to another and each comes with unique features, so ensure you read and understand the terms and conditions first. While one platform may offer impressive rewards with reasonable T&Cs, another may make things super complicated. That’s why you should only target the best betting bonus in Japan and the offers shown in the banners of this page make a great starting point.

šŸŖ™ Top betting bonues not to be missed

Bet365
1.
Get $150 in Bonus Bets Win or Lose when you bet $5!
USA
USA Players Welcome
Wagering (WR): 1x Bonus, Min. Deposit: $10
Best Alternative
GAMBLING PROBLEM? CALL OR TEXT 1-800-GAMBLER (AZ/CO/IL/IN/KY/LA/NC/NJ/OH/PA/TN/VA) or 1-800-BETS OFF (IA). 21+ only (18+ in KY). Must be present in AZ/CO/IA/IL/IN/KY/LA(select parishes)/NC/NJ/OH/PA/TN/VA. *This Referral Code is used for marketing/tracking purposes only. Minimum wager $5. Minimum odds -500 or greater. $10 minimum deposit. Paid in Bonus Bets. Bonus Bets wager excluded from returns. New customers only. Available in app only. Max. prize, game restrictions, time limits and T&Cs apply.

šŸŽ The best betting bonus in Japan — an assortment of options

Lots of different promotions are available for bettors at the sportsbooks you’ll find featured in the banners of this page, and I’ve listed the most prevalent types of online betting bonus in Japan in the table below:

Bonus typeDetails
Welcome bonusExclusively for new bettors
CashbackApplied to losses as a percentage
Bonus betsApplied to your account as a bet credit
No deposit bonusDoesn’t require an initial deposit to claim it
Enhanced oddsBoosts the odds for a specific selection or sports event
Acca insuranceUsually applies if one leg of an accumulator bet loses
Mobile promotionsExclusive offers for mobile bettors

🄳 Welcome bonus – Exclusive to new bettorsĀ 

As the name implies, a welcome bonus is a promotion that ā€œwelcomesā€ you to a new betting platform. All of the best new sign up offers available for your location can be found in the banners of this page.

Many welcome bonuses I’ve encountered are matched deposit offers. For example, a sportsbook may present a 100% matched deposit bonus, worth up to 1,000 JPY. So, when you make your first deposit to your account as a new bettor, it will be matched, up to the 1,000 JPY specified.

You will find that some welcome bonuses require sports betting promo codes in Japan. If that’s the case, then you’ll see that I’ve displayed them in the banners of this page, alongside the relevant offer.

šŸ’µ Cashback – Best betting bonus in Japan to minimize lossesĀ 

Betting is not always favorable – I’m sure you know that. Sometimes, your slip won’t show green at the end of the day. Thankfully, some bookmakers in Japan offer cashback deals to help soften the blow.

How it works is simple, and I’ll use my experience as an example. One time, I placed a bet of 50 JPY on a baseball game and lost. Fortunately for me, the betting site I was using had an active 10% cashback deal, which I was eligible for. So, I got 5 JPY (10% of 50 JPY)Ā  as compensation. Although cashback is usually only a small percentage, every little helps when things are not going so well.

šŸ§‘ā€šŸ’¼ Bonus bets – Available to new and existing bettors

From my experience, I agree most free bet offers come with a prior condition. For instance, to qualify, you may need to deposit and wager up to a particular amount on a minimum odds value to qualify. Once you satisfy the condition, the bookmaker will release the free reward.

The free bet will come with a fixed value. Depending on the bookmaker, it can be 5 JPY, 10 JPY, or more. You may need to spend the entire amount at a go, or the terms and conditions will allow you to spread it across multiple bet slips.

Furthermore, the betting site will typically specify particular sports events where you can use the bonus. The free bets will work on popular games with relatively favorable odds. You can find such quality offers with the bookmakers recommended to you via the banners on this page.

šŸ—’ļø No deposit bonus – Best betting bonus in Japan without paymentĀ 

Many sports betting promotions will require you to make a deposit before claiming rewards, but I’ve also found no deposit offers available for betting sites in Japan. With such promotions, you don’t have to make a deposit before making use of the bonus, but you may have to make a deposit before you can withdraw any winnings you make from it.

No deposit bonuses are sometimes made available to existing bettors too. In such cases, you may need to complete a certain action to release the bonus, or to use it for a specific event. Keep in mind that no deposit promotions are available in different forms, with the majority I’ve seen being bonus bets.

šŸ’° Enhanced odds – A boost in potential winningsĀ 

The betting sites in Japan often have enhanced odds promos, also known as boosted odds. This widely-available type of bonus increases the odds for a specific selection, or sometimes for an entire sports event.

Let me explain how this works. A football match may have 2.0 as the odds for a home win in the 1×2 market on a betting site. For example, if you were to wager 10 JPY, your potential winnings would be 20 JPY (10 x 2.0).

Now, with an enhanced odds bonus, the value you find on the site may increase from 2.0 to 5.0. That means betting 10 JPY will give you 50 JPY — a plus of 30 JPY. I’m sure you’ll agree that such a promo can easily qualify as the best betting bonus in Japan.

šŸ”’ Acca insurance – Another bonus to minimize riskĀ Ā 

To use this promo, you must place an accumulator bet, most often for a specific number of selections from different events. Usually, all the picks in your accumulator must win for your bet to be successful.

However, when a sports betting site offers acca insurance, the bookmaker will still payout if one leg of your accumulator bet loses. Most often this will be as a bonus bet, or bonus funds, rather than as withdrawable funds.

To qualify for an acca insurance bonus, there are typically pre-conditions to meet. For instance, the bookmaker may set a minimum number of selections to make, minimum odds, and minimum or maximum stake requirements. However, for most acca insurance promos I’ve used, the requirements have been modest.

šŸ“± Mobile promotions – Best betting bonus in Japan for mobile bettorsĀ Ā Ā 

Do you prefer betting on the go? I do because it allows me much more freedom. But beyond that, I enjoy mobile betting because it sometimes comes with exclusive rewards.

Many of the sportsbooks you’ll find recommended in the banners of this page have mobile betting apps for Japan available for Android and iOS devices, which they encourage bettors to install. As an incentive, it’s quite common for betting sites to offer mobile-specific promotions. For instance, you may get a mobile welcome bonus that rewards you the first time you make a deposit using the mobile app.

I’ve received mobile welcome bonuses, free bets, reloads, and cashback. So, it shouldn’t come as a surprise that I rate mobile promotions among some of the best betting bonuses in Japan, especially as I prefer to bet from my phone anyway.

šŸ“¶ Pros and cons of betting bonuses

Claiming the best betting bonus in Japan comes with advantages. Since there are many different types ofĀ  offers you can easily find one to suit your betting style by checking out the offers in the banners of this page, But meanwhile, here are some of the pros and cons of sportsbook bonuses.

Betting sites with low minimum deposito
  • Bonuses increase your betting bankroll
  • No deposit bonuses let you try out a new platform
  • There are plenty of different options to suit your style
  • Some wagering requirements may be challenging to satisfy

šŸ† Conclusion – Go for the bestĀ 

If you are a Japanese sports bettor, seeking out the best betting bonus in Japan, then I can confirm that there is plenty of scope for finding a sportsbook bonus with fair and reasonable bonus terms and conditions. Don’t forget to check out the banners of this page to see all of the top sports betting bonuses that are available in your location right now.

You can find my overview of the gambling in Japan here.

šŸ„Ž Our top-rated online bookmakers in 2025

Bet365
1.
Get $150 in Bonus Bets Win or Lose when you bet $5!
USA
USA Players Welcome
Virginia (US) Lottery Board
Best Alternative
GAMBLING PROBLEM? CALL OR TEXT 1-800-GAMBLER (AZ/CO/IL/IN/KY/LA/NC/NJ/OH/PA/TN/VA) or 1-800-BETS OFF (IA). 21+ only (18+ in KY). Must be present in AZ/CO/IA/IL/IN/KY/LA(select parishes)/NC/NJ/OH/PA/TN/VA. *This Referral Code is used for marketing/tracking purposes only. Minimum wager $5. Minimum odds -500 or greater. $10 minimum deposit. Paid in Bonus Bets. Bonus Bets wager excluded from returns. New customers only. Available in app only. Max. prize, game restrictions, time limits and T&Cs apply.

ā“ Best betting bonus Japan FAQsĀ 

šŸŽ° Can I play at online casinos in Japan?

Yes, it’s also possible to play at online casinos in Japan. So, if you’re looking for the casino bonus in Japan, you’ll be pleased to hear that I’ve displayed the top online casino platforms that are available for your location in the banners of this page, along with their current welcome offers.Ā Ā 

šŸ’µ Can I withdraw bonus money?

Each sports betting bonus comes with its own unique set of T&Cs, but in cases where a bonus is withdrawable, you’ll first need to satisfy a wagering requirement. That means you’ll need to wager the bonus amount a specific number of times before it becomes eligible for withdrawal.Ā 

šŸ—» What is the best betting bonus in Japan?

You’ll find all of the best sports betting offers for Japanese bettors displayed in the banners of this page. Among the top offers you’ll find generous welcome bonuses, cashback deals and bonus bets. I’ve also added a link to my full reviews for each brand, so it’s easy to find out more about any that interest you.Ā 

⚾ Is there a baseball betting bonus in Japan?

Baseball is an incredibly popular sport in Japan, so you’ll find that some online sportsbooks regularly offer promotions for baseball events. You may find offers like boosted odds, bonus bets, acca insurance and more, Check out the banners of this page to see the very best bonuses for your location.Ā 

Top Betting Sites
Top Betting Bonuses
Bet365 Promo
Get $150 in Bonus Bets Win or Lose when you bet $5!
T&Cs apply
4.1/5
GAMBLING PROBLEM? CALL OR TEXT 1-800-GAMBLER (AZ/CO/IL/IN/KY/LA/NC/NJ/OH/PA/TN/VA) or 1-800-BETS OFF (IA). 21+ only (18+ in KY). Must be present in AZ/CO/IA/IL/IN/KY/LA(select parishes)/NC/NJ/OH/PA/TN/VA. *This Referral Code is used for marketing/tracking purposes only. Minimum wager $5. Minimum odds -500 or greater. $10 minimum deposit. Paid in Bonus Bets. Bonus Bets wager excluded from returns. New customers only. Available in app only. Max. prize, game restrictions, time limits and T&Cs apply.
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