21 + 3 Side Bet: How Does it Work
21 + 3 is two games in one: you play a standard game of blackjack while playing a small game of Three Card Poker. The player uses their original two cards and a dealer’s up card to make a ranking three card poker hand. Thus, you can stand to win a sizeable amount of money if fortune falls in your favour.
How to Make the 21 Plus 3 Blackjack Side Bet
Before the cards are laid out, when you are placing your wager, you have two choices. The first is on your blackjack bet and how much you want to stake. Making this bet is not optional if you want to continue with the Three Card Poker wager. Once the minimum amount is staked on blackjack, you have the option of making the Three Card Poker side bet.
The side bet is played before the hand of blackjack. Once the player has received 2 cards the dealer will lay down a 1 up card. These are the 3 cards used in the bet. If they total a straight flush, 3 of a kind, straight or flush then the side bet gets paid out and the hand continues as a standard game of blackjack.
How to Play Blackjack 21+3
When you make a wager on a standard hand of blackjack, you can make a small side wager. The caveat being that the small side wager is based on 3-card poker rather than the hand of blackjack.
The side wager is that the original two cards, plus the dealer’s up card, will combine to create a winning hand of poker. If they make a straight, flush, three of a kind, or straight flush, the player wins. Side wagers pay out at 9-to-1 no matter what.
The game itself is dealt as it would be for a standard hand of blackjack. Before the cards are dealt, a side bet is paid and the first cards are dealt. When the 3-card wagers have been settled, the hand of blackjack continues as it would normally.
Variations on the 21 + 3 Side Bet
There are variations to the game, depending on the casino you play at. A standard version will pay out with a 9 to 1 ratio for each winning hand. This is irrespective of its ranking, so a straight flush would pay out the same as 3 of a kind. If you want one that uses a sliding pay scale based on the hand, then you need to look for a game of 21 + 3 extreme.
When playing a standard game of 21 + 3, you can expect a house edge of around 13.39% This may contain variations depending on the casino you are in, which can shift the house edge from anywhere between 1.60% to 33.44%.
It has many ways in which the player can win and has a return to player of over 95% depending on which version is played.
21 + 3: Winning Odds and Payouts
Flush – A flush contains 3 cards all in the same suit. It has 292,896 combinations with odds of 73:117. A flush will give a payout of 5 to 1.
Straight – A straight occurs when the two cards dealt to the player and the dealer’s up card run in consecutive order. For example, this may be a 5-6-7. This is irrespective of the suit. A flush has 155520 combinations with odds of 31:969. It gives a payout of 10 to 1.
3 of a Kind – These are 3 cards of the same value or face cards. When they all belong to the same suit, it becomes a suited 3 of a kind in version 7, which pays the maximum on a live dealer game of 100 to 1. A 3 of a kind on 21+3 Xtreme has 26,312 combinations with odds of 1:199. It provides a payout of 20 to 1.
Straight flush – A straight flush is the same as a flush, being that the 2 cards of the players and 1-up card of the dealer must be in consecutive order. However, for a straight flush, they must be of the same suit. A straight flush has 10,368 combinations with odds of 1:499. It also has a payout of 30 to 1.
How Much Can I win on a Blackjack 21+3 side bet?
Though the payout odds can differ depending on the casino, they are largely similar. Most casinos round up the side bet to 9-5to-1 odds no matter what kind of hand you have. The probability of each possible hand occurring might vary but the payouts remain the same.
Remember that there are just a few ways to win the side bet in Blackjack 21+3. Players can combine their two cards and the dealer’s face up card to form a straight, flush, straight flush, three-of-a-kind, or suited three-of-a-kind.
You generally aren’t going to win big making a ton on any winning side bet hand, but it is still a nice way to gain a chunk on your bankroll. Check with the establishment in which you wish to play to find out the odds before sitting down at the table.
21+3 Blackjack with Top 3
The top 3 is another propositional bet some casinos offer used in conjunction with the 21 + 3 game. You can find it on blackjack tables offering 21 + 3 that have a 4, 6 or 8 deck shoe.
Bets of this kind can only take place if both the blackjack wager and the 21 + 3 poker wager are made. It is based on a 3-card hand using the dealer’s 1-up card and the player’s 2 initial cards to form a 3-card poker hand. 3 of kind, straight flush and 3 of a kind suited get paid according to the pay table.
Winning occurs when the player’s original 2 cards with the dealer’s card combine for a winning hand. The odds are 3 of a kind suited at 270 to 1, a straight flush at 180 to 1, and 3 of a kind at 90 to 1.
Tips for Winning at Blackjack 21+3 Side Bet Game
Just like winning at blackjack, it helps to be very good with math before sitting down and attempting side bets. It helps to know the mathematical odds of winning, the payout odds, and a little bit of card-counting before sitting down.
Targeting flushes is the best bet. Since there are 10 of each suit, the odds of making a three-card flush is roughly 1:480. Depending on distribution and the number of shoes used in a casino deck, that can change. There is no sure way to win in this game but you can give yourself a means of cutting down on the house edge.
Advantages of 21 + 3 Bets
For a basic strategy when playing the game, you don’t need to deviate too much from normal Three Card Poker and blackjack strategy. As decks get shuffled after each round, it does make it hard to predict what cards may come up in the side bet. The only way you can tip the odds in your favour is by utilising any casino bonuses.
One of its advantages is that it is an easy game to get to grips with, excellent for beginners who have a rudimentary knowledge of blackjack and poker. However, not all casinos will offer the game, even online, so you may need to search around for it.
FAQ
What is the 21+3 side bet?
The “21 + 3” blackjack side bet looks at the player’s two cards and the dealer’s up-card. If these three cards make a flush, straight, three-of-a-kind, or straight flush, the player wins. Originally, the payout for each of these hands was 9-to-1.
Is 21+3 a good bet?
In some single-deck games, the house edge for the 21+3 side bet can be as high as 13.39%. Given that the house edge for standard blackjack with optimal strategy is about 0.5%, the 21+3 bet is not worth it.
What is the 21+3 in blackjack?
21 + 3 is an exciting twist on regular blackjack. After placing your main bet, you can make a side bet on a three-card poker hand. This side bet is based on whether your two cards and the dealer’s up card will make a winning poker hand.
Are side bets in blackjack worth it?
Are side bets in blackjack worth it? Side bets can be fun and might pay out more than the main game, but they also have a higher house edge, making them riskier over time.
What is the house edge for 21+3 blackjack?
The house edge for 21+3 blackjack decreases when more decks are used. In a six-deck game where different hands like Flush, Straight, Three of a Kind, Straight Flush, and Three of a Kind Flush have varying payouts (instead of a flat 9:1 rate), the house edge is 4.14%.
More Blackjack Guides

Blackjack Insurance: Always a Bad Bet
When playing blackjack, what is insurance? We discuss this side bet and why it is not always the best decision to make. The term “Insurance” is used to define a form of protection from financial loss. It is a very safe thing to.

Do Blackjack Betting Systems Work?
Our experts provide a guide to blackjack betting systems and explain why they cannot guarantee a profit. Blackjack, as one of the world’s most popular casino games, has been the subject of a great deal of exploratory work over the decades.

Blackjack Card Values: Soft vs Hard Hands
Simple and easy explanation of starting blackjack card values, plus the difference between soft and hard hands. For casual players, blackjack might appear as one of the simpler casino games out there. In reality, there’s a lot for a player to understand at a glance so they can maximize their.

Learn About Blackjack Payouts & the House Edge
Discover the size of blackjack payouts and odds, and the overall blackjack house edge based on which variant you play! If you are a total novice when it comes to playing blackjack, you will almost certainly be unfamiliar with the blackjack payouts available to.

Blackjack Etiquette Guidelines & Advice
Our guide to correct blackjack etiquette tells you what to do and what to avoid while playing at the casino. Blackjack is a staple card game that is played in casinos all over the world. While the rules are simple, there are some important aspects of blackjack etiquette for.

Different Online Blackjack Variations Explained
There are many different blackjack variations to play online, including Spanish 22, Switch and Perfect Blackjack. +18 Play Responsibly. Blackjack is one of the most authentic casino table games of all time. Blackjack games have been enjoyed through the generations, with people more recently venturing online to enjoy classic blackjack.

Top 7 Blackjack Legends
Edward O Thorp, Roger Baldwin and Wilbert Cantey are just a few of the world’s Blackjack Legends whose stories we share. Blackjack is one of the simplest table games you’ll find in a casino. The origins of “21” may still be something of a mystery, but there’s no doubt.

How Many Decks In Blackjack
Learn about how many decks in blackjack and how card counters made single-deck games go extinct in Atlantic City. Blackjack is one of the most popular casino games in the world. No matter where you sit down, in-person or online, players are attempting to best the dealer in a number.

The Origins and History of Blackjack
Discover the history of blackjack and how it became one of the most popular card games in the world at Casino.com. The History of Blackjack: From France to the US and Beyond The history of blackjack is fragmented. Like most things from centuries past, it’s a composite of different ideas.

Guide to Blackjack Hand Signals
Blackjack can be a relatively simple game. When you know how to properly use hand signals, you can play the game it was meant to be played. Blackjack is one of the oldest games around. Get as close to 21 as possible and best the dealer in the process.

Crucial Differences Between Online & Offline Blackjack
Our blackjack strategy expert Angela Wyman shares tips on how to play online blackjack versus offline blackjack. Online vs Traditional Blackjack: What’s the Difference? For all its ability to evolve and adapt to new mediums, blackjack’s recent history, including its success on the internet and mobile phones, is barely.

Double Deck Blackjack: What You Need to Know
Learn all about Double Deck Blackjack, including the rules for doubling, splitting, and other key moves. Double Deck Blackjack is a popular variation of the classic card game that balances single-deck and multi-deck versions. The number of decks in play significantly affects the house edge and strategies you can.

What Is Single-Deck Blackjack? Rules, Odds & Why It’s Better
Learn what single-deck blackjack is, how it works, and why it gives better odds than other versions. See the rules, odds, and where to find them today. If you’re new to blackjack, you’ve probably heard about “single deck” games and wondered what makes them different.

What is Blackjack Surrender?
Blackjack is a relatively simple game but it can get complicated when you include things like splitting pairs, doubling down, and surrender. Being an expert blackjack player takes practice and time. It also takes a solid understanding of the game, its rules, and the various moves that can be executed.

What is Card Counting and is it Legal
Read our helpful guide to card counting, a common strategy amongst blackjack players, and find out if it's legal. Whether in a local brick-and-mortar casino or playing at a preferred online casino, every player is trying to find an advantage over the house.

How Does Edge Sorting Work in Casinos
Edge sorting is a crafty way to beat the casino by identifying the best cards before they're dealt. Everyone wants to beat the house — and this is one method players have used to tilt the balance in their favour. Learn how it works and why casinos definitely don't approve.

Spanish 21 vs. Traditional Blackjack
Compare classic blackjack and Spanish 21, including their rules and the best strategies to boost your chances of winning. Spanish 21 follows the same basic principles as blackjack — getting close to 21 without busting — but key rule changes impact strategy and house edge in some notable ways.

