21+3 Blackjack Guide: How the Side Bet Works
21+3 blackjack is not a separate blackjack game. It is a side bet added to regular blackjack, and that distinction matters.
You still play the main hand against the dealer in the usual way: hit, stand, double, split, and try to beat the dealer without going over 21. The 21+3 part sits next to that game. It uses your first two cards plus the dealer’s face-up card to form a three-card poker hand.
That sounds simple because it is. The catch, as usual with side bets, is in the maths. 21+3 can be fun, especially when a big-looking poker hand lands, but it should not be treated as a serious blackjack strategy tool. It is more like adding spice to the hand. Sometimes nice, sometimes expensive.What Is the 21+3 Blackjack Side Bet?
The 21+3 side bet checks whether three cards make a poker-style combination:
your first card, your second card, and the dealer’s upcard.
If those three cards form a qualifying hand, the side bet wins. If they do not, the side bet loses, even if your main blackjack hand later wins.
This is why 21+3 feels different from normal blackjack. A player can lose the main hand but win the side bet. Or win the blackjack hand and still lose the side bet. They are connected by the same cards, but paid separately.
How 21+3 Blackjack Works Step by Step
Before the cards are dealt, you place your regular blackjack bet. If the table offers 21+3, you can also place a separate side bet in the marked 21+3 betting area.
Then the dealer gives you two cards and takes one face-up card. At that point, the side bet result is already decided. The casino checks whether your two cards plus the dealer’s upcard create one of the listed poker hands.
After that, the blackjack hand continues as normal. The 21+3 result does not change whether you should hit, stand, double, or split.
That last point is important. Do not let a side bet win or loss distract you from basic blackjack decisions.
Common 21+3 Winning Hands
Exact hands and payouts can vary depending on the casino, software provider, and table rules. Still, most 21+3 blackjack versions are built around combinations like these:
|
Hand Type |
What It Means |
|
Flush |
Three cards of the same suit |
|
Straight |
Three cards in sequence |
|
Three of a Kind |
Three cards of the same rank |
|
Straight Flush |
Three cards in sequence and same suit |
|
Suited Trips |
Three identical ranked cards in the same suit, possible in multi-deck games |
Some versions use different names or slightly different hand rankings. Before betting real money, open the game rules and payout table. It takes less than a minute and saves you from guessing, which is rarely a profitable casino habit.
21+3 Blackjack Payouts
There is no single universal payout table for 21+3 blackjack. One casino may pay more for suited trips, another may use a flatter structure, and live dealer tables can differ from RNG blackjack versions.
A typical payout table may reward stronger hands more heavily, with suited trips or straight flushes paying the most. Lower-value hands like flushes and straights usually pay less. But the exact numbers are operator-dependent.
This is where many players make a small but costly mistake. They see “21+3” and assume all versions are the same. They are not. Even small payout differences can affect the house edge.
Is 21+3 a Good Bet?
It depends what you mean by “good”.
If you mean “fun and easy to understand,” yes, 21+3 can be a good side bet. It gives each round another layer, and the result is quick. You know almost immediately whether the side wager has hit.
If you mean “strong from a mathematical point of view,” usually no. Side bets in blackjack tend to carry a higher house edge than the main game when blackjack is played with correct basic strategy. 21+3 is no exception in many versions.
That does not mean you should never play it. It means you should size it properly. A small occasional side bet is one thing. Betting the same amount on 21+3 as on your main blackjack hand is a very different decision.
Basic Strategy Still Comes First
The best way to play blackjack is still to make correct decisions on the main hand. That means using basic strategy based on your cards and the dealer’s upcard.
21+3 does not change that.
For example, if your side bet loses instantly, you should not start chasing by taking risky hits. If your side bet wins, that also does not mean the main hand should suddenly be played more aggressively. The blackjack hand has its own odds.
A boring rule, but a useful one: treat the side bet as already finished once the first cards are dealt. Then play blackjack properly.
Tips for Playing 21+3 Blackjack
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Keep the side bet smaller than your main blackjack wager. This helps protect your balance from the higher volatility that side bets usually bring.
Check the payout table before playing. Two games with the same name may not pay the same way.
Avoid chasing rare hands. Suited trips and straight flushes are attractive because the payouts look good, but they do not appear often.
Set a limit for side bets. For example, you might decide to use 21+3 only for a few rounds, or only when playing lower stakes.
And, most importantly, do not confuse entertainment with advantage. 21+3 adds action. It does not magically make blackjack easier to beat.
Playing 21+3 Blackjack Online in Canada
Canadian players can find blackjack games with side bets at many online casinos, though availability depends on the operator, province, platform, and game provider. Ontario players should also pay attention to whether they are using a locally regulated site, while players in other provinces may see a different mix of international casino brands.
If you are comparing casino options, you can review platforms such as Rolling Slots and LuckyHills. Do not choose a casino only because it has blackjack. Check the payment methods, CAD support, withdrawal conditions, bonus terms, and the actual rules inside the blackjack game before depositing.
Verdict
21+3 blackjack is a simple and entertaining side bet, not a shortcut to better blackjack results. Play the main hand with proper basic strategy, keep the side wager modest, and always check the payout table before you assume the game is worth your money.
Amanda Shimmer is the Chief Editor at CasinosInCanada and an experienced casino expert who ensures all guides, reviews, and industry investigations remain accurate, transparent, and helpful for players.
