The 21+3 side bet in blackjack is an additional wager that combines elements of blackjack and poker. It is based on the player’s first two cards and the dealer’s upcard, forming a three-card hand.
While standard blackjack focuses on reaching a hand value close to 21, the 21+3 side bet is settled separately and depends on whether those three cards form specific poker-style combinations.
This blog explains what 21+3 blackjack is, how it works, the types of hands that qualify, and how 21+3 blackjack payouts are typically structured.
What Is 21+3 in Blackjack?
In blackjack, the term “21+3” refers to:
- The player’s two cards
- The dealer’s visible card
These three cards are combined to create a poker-style hand. The outcome of the side bet depends on whether the combination matches predefined hand rankings.
The 21+3 side bet is optional and does not affect the outcome of the main blackjack hand. The side bet is commonly available alongside other table games if you choose to play an online casino version.
How Does the 21+3 Side Bet Work?
To place a 21+3 bet:
- A separate stake is placed alongside the main blackjack bet.
- Cards are dealt as usual.
- The player’s two cards and the dealer’s upcard are evaluated together.
If the three cards form a qualifying combination, the side bet pays out according to the table rules. If no qualifying combination is formed, the side bet loses, regardless of the outcome of the main blackjack hand.
You can typically find this option in selected blackjack tables or within live casino environments, depending on availability.
21+3 Blackjack Hand Combinations
The 21+3 side bet uses poker-style hand rankings. Common qualifying combinations include:
- Flush: Three cards of the same suit.
- Straight: Three cards in consecutive order.
- Three of a Kind: Three cards of the same rank.
- Straight Flush: Three consecutive cards of the same suit.
- Suited Three of a Kind: Three identical cards in both rank and suit.
Not all tables include every variation, and available combinations may differ depending on the game provider.
21+3 Blackjack Payouts
21+3 blackjack payouts are based on the type of combination formed, with higher-ranking hands typically receiving larger returns. Rather than using fixed values across all tables, payout structures vary depending on the game provider and configuration.
In general:
- Lower-ranked combinations such as a flush tend to return smaller payouts.
- Mid-tier combinations like a straight or three of a kind offer higher returns.
- Higher-ranked hands, including straight flushes or suited three of a kind, are usually associated with the largest payouts.
It is important to review the specific rules displayed at the table before placing a bet because payout tables can differ.
How 21+3 Differs From Standard Blackjack
The 21+3 side bet operates independently from the main blackjack game.
Key differences include:
- The side bet is based on card combinations, not hand totals.
- It uses three cards, rather than two or more drawn cards.
- It follows poker-style rankings, not blackjack scoring.
- The outcome does not affect the main blackjack result.
Because of this, a player may win the main blackjack hand but lose the 21+3 bet, or vice versa.
What Affects 21+3 Outcomes?
Several factors influence how the 21+3 side bet plays out:
- The random distribution of cards
- The number of decks used
- The specific payout table applied
- Game rules set by the provider
As with all casino games, outcomes are determined by chance, and individual results can vary.
Is the 21+3 Side Bet Always Available?
The 21+3 option is not present at every blackjack table. It is more commonly available in:
- Online blackjack variants
- Live dealer blackjack games
- Tables offering additional side bets
Availability depends on the specific game and platform. In live environments, the side bet may appear alongside standard blackjack features, which are explained in more detail in this guide to what a live dealer casino is and how it works.
Understanding 21+3 Blackjack Payouts and Gameplay
The 21+3 side bet combines elements of blackjack and poker by using a three-card hand made up of the player’s cards and the dealer’s upcard. In live formats, the pace and structure of gameplay can differ slightly from standard online tables, so it’s helpful to know what to expect when joining a live dealer casino.
Outcomes are based on predefined hand rankings, with payouts varying depending on the combination achieved. Because the side bet is separate from the main blackjack game, it introduces an additional layer to how results are structured without changing the core gameplay. As with all casino games, outcomes are determined by chance, and results can vary between sessions.
Frequently Asked Questions About 21+3 Blackjack
What is 21+3 blackjack?
21+3 blackjack is a side bet based on the player’s first two cards and the dealer’s upcard, forming a three-card poker-style hand.
What does 21+3 mean in blackjack?
It refers to combining the player’s two cards with the dealer’s visible card to create a three-card combination.
Does 21+3 affect the main blackjack game?
No. The side bet is separate and does not influence the outcome of the main hand.
What are the best hands in 21+3 blackjack?
Higher-ranking combinations typically include straight flush and suited three of a kind, depending on the table rules.
Are 21+3 payouts always the same?
No. Payouts can vary depending on the game provider and table settings.
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