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Casino 02 June 2025

What Is the 21+3 Side Bet in Blackjack?

Level Up Your Blackjack Game with the 21+3 Bet

The 21+3 side bet in blackjack combines poker-style hands with classic blackjack, adding excitement to your gaming experience. Whether you’re an experienced player or new to the game, understanding this side bet can enhance your gameplay.

A hand showing 2 cards on a poker table

Table of contents:

  • WHAT IS THE 21+3 SIDE BET?
  • HOW TO PLAY BLACKJACK 21+3 SIDE BET?
  • PAYOUTS AND PROBABILITIES
  • BLACKJACK STRATEGY AND THE 21+3 SIDE BET
  • WHY PLAY THE 21+3 SIDE BET?
  • PLAY BLACKJACK ONLINE
  • BOOST YOUR BLACKJACK EXPERIENCE TODAY

What Is the 21+3 Side Bet?

The 21+3 side bet is an exciting addition to the classic game of blackjack, combining elements of poker to enhance your gameplay. It allows you to bet on the first two cards you’re dealt and the dealer’s upcard, aiming to form a winning poker hand.

Popular combinations include a flush, straight, or three of a kind. This side bet adds a layer of strategy and thrill to your blackjack experience, offering higher payouts compared to traditional bets.

If you’re a fan of blackjack and poker, the 21+3 side bet is the perfect blend of both worlds, spicing up each hand with the chance to land a big win!

How to Play Blackjack 21+3 Side Bet

Playing blackjack with the 21+3 bet is as easy as adding a dash of poker flair to the classic game. Here’s a quick guide to get started:

1. Place Your Main Bet and Side Bet

Start by placing your main blackjack bet, then add your 21+3 side bet.

2. Receive Your Cards

You’ll be dealt two cards, and the dealer gets one card face-up and one face-down.

3. Check for Poker Hands

Combine your two cards with the dealer’s upcard to see if you’ve formed a winning poker hand. Winning combinations include straights, flushes, and three of a kind.

4. Play Blackjack as Usual

Continue playing your blackjack hand, hitting, standing, or doubling down to beat the dealer’s hand without exceeding 21.

This combination of classic blackjack and the 21+3 bet adds an extra layer of excitement and the chance for bigger wins!

Payouts and Probabilities

Understanding the payouts and probabilities for the 21+3 side bet can help you make the most of your gameplay. Here’s what you can expect:

21+3 Side Bet Payouts
Hand Type Description Payout
Flush  Three cards of the same suit 5 to 1
Straight  Three consecutive cards 10 to 1
Three of a kind  Three cards of the same rank 30 to 1
Straight Flush Three consecutive cards of the same suit 40 to 1
Suited Trips Three identical cards of the same suit 100 to 1

Blackjack Strategy and the 21+3 Bet

While this side bet is a gamble, it works best when you’re already comfortable with the base game. Focus on tables with favourable payouts and understand the odds for each winning poker hand. The 21+3 bet is not about consistent wins but adding excitement and the potential for big payouts to your game.

Incorporating the 21+3 bet into your blackjack strategy requires careful consideration. While the payouts are enticing, this side bet has a higher house edge than the main blackjack game.

To optimise your play:

  • Stick to basic blackjack strategies to minimise the house edge.
  • If you’re curious about how to count cards in blackjack, note that card counting can occasionally help assess the likelihood of favourable hands for the 21+3 bet. However, this technique is less effective in online games where decks are frequently reshuffled.
  • Use the 21+3 bet as a fun addition rather than a primary focus.

Why Play the 21+3 Side Bet?

The 21+3 side bet is perfect for players looking to elevate their blackjack experience. Here’s why it’s worth a try:

Bigger Payouts: With odds like 100:1 for a suited three of a kind, the potential rewards are huge.

Added Excitement: It brings a fresh twist to standard blackjack, keeping the game dynamic.

Poker Fans Rejoice: Love poker? This bet blends blackjack with your favourite card game.

Low Stakes, High Rewards: Many tables let you place side bets for as little as €1, making it a fun, low-risk addition.

Whether you’re a casual player or a seasoned pro, the 21+3 side bet is a thrilling way to mix things up.

Play Blackjack Online 

Ready to give it a go? Online blackjack offers the perfect opportunity to try out the 21+3 side bet from the comfort of your home. With a variety of tables, bet sizes, and live dealer options, Irish players can find the perfect game to suit their style at Lottoland's Online Casino

So why wait? Try the 21+3 side bet today and see how it can boost your blackjack game! Check out the top Blackjack games at Lottoland today:

Top Blackjack games
Blackjack Game RTP
Perfect Pairs 21+3 Blackjack
94.21% - 95.38%
5 Hand Blackjack
99.59%
5 Hand Blackjack HiLo
97.92% - 99.59%
Blackjack
99.75%
Lottoland Blackjack
99.42%

Boost Your Blackjack Experience Today

Take your blackjack skills to the next level by exploring the 21+3 side bet. Whether you’re looking for higher payouts, an added layer of excitement, or a new way to enjoy a classic casino game, this side bet has something to offer.

Irish players can enjoy the thrill of blackjack online, complete with the 21+3 side bet at Lottoland Casino. With games offering impressive RTPs and a variety of betting options, now is the perfect time to dive in and experience the action for yourself.

Remember to gamble responsibly and enjoy the game!

A
by Amber
Amber
» Read all stories from Amber

What I Cover: I love diving into the exciting world of international lotteries and keeping you in the loop with the freshest updates, the juiciest jackpot wins, and any cool changes happening with the draws. I'm also your go-to person for honest reviews of all the latest casino games. I'll let you know which games are packing the biggest jackpots and the most fun, giving you the lowdown on the themes, special features, and what the gameplay is like.

When it comes to sports, I've got your back. I break down all the ins and outs of different sports and show you how to make smart bets online. And hey, if you're into bingo, I've got tips and tricks to make your online bingo experience a total blast.

My Background: I have been deeply immersed in the realms of lotteries, casinos, and sports since 2021, capturing the ever-evolving landscape of these dynamic industries. With an astute focus on the pulse of the gaming world, I have closely monitored the shifts, trends, and innovations shaping the experiences of enthusiasts worldwide.

Prior to my venture into the world of content creation, I pursued a degree in marketing, harnessing its insights to infuse creativity into my work and ensure my readers remain thoroughly engaged and informed.

Journalistic Ethics: My primary aim as a content writer is to ensure my readers are equipped with the most accurate and timely information concerning the gaming, sports and lottery landscape. I emphasize the significance of responsible betting, stressing the need for individuals to engage in these activities as a source of entertainment and only within their means. While acknowledging the role of chance in winning the lottery, I actively promote the importance of responsible gaming practices and readily provide information about the various support resources.

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