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May 6th, 2026
Side bets in blackjack (Perfect Pairs, 21+3…): how they work and when to play them for fun?
Online blackjack is no longer limited to a simple game against the dealer. Today, many variants offer blackjack side bets, which enhance the gaming experience. Among the most well-known are Perfect Pairs blackjack and 21+3 blackjack. Often seen as secondary, these options nevertheless add a different dimension to the game. They do not replace the classic strategy, but offer a more playful way to approach an online blackjack session in Belgium.
What is a side bet in blackjack?
A side bet is an additional wager that you can place before the cards are dealt. Unlike the main bet, it does not depend on the final result against the dealer. Its functioning is based on specific combinations, generally using the first cards dealt. This means that a player can lose their main hand but still win thanks to a side bet. These blackjack variants introduce more variety into the course of a game, with potential winnings different from those of the classic game.
Perfect Pairs blackjack: a matter of combination
Perfect Pairs blackjack is one of the most popular side bets. Its principle is simple: you bet that your first two cards will form a pair. Depending on the type of pair obtained, the winnings vary. A perfect pair, made up of two identical cards (same value and same suit), generally offers the highest payout. Other combinations, such as a pair with the same value but different colours, offer more modest winnings. This side bet therefore relies only on the initial deal, without any link to gameplay decisions. It fits easily into a session, especially for players who want to add an extra layer without complicating their strategy.
21+3 blackjack: a mix between blackjack and poker
21+3 blackjack works differently. Here, the winning combination is based on three cards: your first two cards and the dealer’s visible card. The goal is to form a poker-inspired hand, such as a flush, a straight or three of a kind. The rarer the combination, the higher the payout. This side bet particularly appeals to players who enjoy hybrid mechanics. It is no longer just about beating the dealer, but also about identifying patterns in the dealt cards. In the context of online blackjack in Belgium, this type of variant has become very popular because it adds a different rhythm to the game.
How do side bets work in practice?
Blackjack side bets are always played before the cards are dealt. The player freely chooses whether to activate these options or not. Once the cards are visible, the result is immediate. There is no additional decision to make. Unlike the main game, where decisions influence the outcome, side bets rely entirely on the combination obtained. This explains why these options are often used for their entertainment value rather than for strategy.
Can you win with blackjack side bets?
The question often comes up: can you really win with blackjack side bets? These bets sometimes offer high payouts for certain combinations. However, they are generally more volatile than the main card game. Wins are less frequent, but potentially higher. It is therefore more relevant to see them as a complement to the game rather than a primary lever. They add rhythm and variation, but do not replace the logic of classic blackjack.
When should you play side bets for fun?
Side bets make the most sense when used for enjoyment. They can be interesting at the beginning of a session to add energy to the first hands, during longer sessions to vary the rhythm, or when you want to test different blackjack variants. On the other hand, they are less suitable if you are looking for a purely structured approach to blackjack. The idea is not to make them a reflex, but to use them occasionally to enrich the experience.
What to remember
Blackjack side bets such as Perfect Pairs and 21+3 do not change the fundamental rules of the game. They add an extra layer, based on specific combinations and winnings independent from the main hand. Understanding how side bets work simply helps you integrate them better into a session. Their value lies above all in their entertaining aspect and their ability to renew the game.
Conclusion
Side bets are now an integral part of online blackjack in Belgium. They allow players to step away from the classic structure and explore new ways of playing without changing the basics of the game. Used in moderation, they offer a more varied and dynamic experience. More than a way to win, they are above all a different way to enjoy blackjack.
FAQ – Blackjack side bets
What is a side bet in blackjack?
It is an additional wager based on card combinations, independent from the result against the dealer.
How does Perfect Pairs blackjack work?
It consists of betting that your first two cards form a pair.
How does 21+3 blackjack work?
This side bet is based on a three-card combination inspired by poker.
Are side bets mandatory?
No, they are completely optional.
Can you win with blackjack side bets?
Yes, but wins are less frequent and often more variable.



