You are looking at a table-specific label, not a universal rule
Blackjack has a shared core: beat the dealer's total without going over 21. But the moment you sit at a real table, the felt in front of you carries a layer of local information that no general guide can replace. A phrase like "side 23" belongs to that layer. It is not one of the standard bets that appear on every blackjack layout, and no widely published rulebook defines it as a fixed term. What it almost certainly refers to is one of two things: a side bet printed in a specific position on the layout, or a rule variant that the house has numbered on its own table sign.
The important move is not to memorise what some website says side 23 means. The important move is to learn how to read the table in front of you, because that is where the number is defined. Every blackjack table carries the same set of information in roughly the same places, and once you know where to look, a label like this resolves itself in under a minute.
Where a label like side 23 appears
Blackjack layouts are dense with markings. The main betting circle sits directly in front of each seat. Around it, often printed in smaller text or in a contrasting colour, are additional circles, boxes or zones. Those are side bet areas. A house that runs several side bets may number them so the dealer and the floor supervisor can refer to them quickly. "Side 23" could be a printed identifier on one of those zones, or it could be shorthand used by staff for the twenty-third side bet in that venue's internal menu.
Rule variants get the same treatment. A table sign, usually a small plastic stand on the felt or a card clipped to the shoe, lists the specific rules in force at that table: whether the dealer stands or hits on soft 17, how many decks are in the shoe, whether surrender is offered, what blackjack pays, and any local twists. Some venues number those rule lines. A player who glances at the sign and sees "23" next to a line about a side bet or a payout rule has found their answer.
The reliable method is to ask the dealer to point at the rule or the bet area and explain it. Dealers are trained to answer exactly this kind of question, and asking before you put chips down is normal, not an interruption. The floor supervisor can also confirm what a numbered label means if the dealer is mid-hand.
How to read a blackjack table before you buy in
Buy-in is the moment you convert cash into chips, and it is the wrong moment to discover a rule you do not like. Spend thirty seconds on the rail before you sit. Look for the table sign, the printed side bet areas, and the payout text. The sequence that follows is the same at every table.
You place a cash buy-in on the felt rather than handing it to the dealer. The dealer spreads it, calls out the amount, and the floor confirms it. Chips come back to you. You then place a wager in the main betting circle before the first card is dealt. Side bets, if you choose them, go in their own marked zones at the same time. Once the first card leaves the shoe, the hand is live and your decisions are limited to the options the rules allow.
Each decision point in the hand is a choice with a cost. Hitting means taking another card. Standing means keeping your total. Doubling lets you add a second wager equal to your first in exchange for exactly one more card. Splitting separates a paired starting hand into two hands, each with its own wager. Surrender, where offered, lets you forfeit half your wager and end the hand before playing it out. None of these options changes the house edge on the original bet; they change the expected rate of loss on the specific decision in front of you.
| Decision | What you do | What it changes | What it does not change |
|---|---|---|---|
| Hit | Take another card | Your hand total | The house edge on the wager |
| Stand | Keep your total and end your turn | Nothing further in the hand | The house edge on the wager |
| Double | Add a second wager, receive exactly one card | Total amount at risk | The house edge on the wager |
| Split | Separate a pair into two hands, each with its own wager | Number of hands in play | The house edge on each wager |
| Surrender | Forfeit half the wager and end the hand | Amount lost on the hand | The house edge on the wager |
Side bets sit outside this decision tree. They are separate wagers with their own payouts and their own edges, resolved independently of the main hand. A side bet can win while the main hand loses, and vice versa. The house edge on a side bet is typically higher than the edge on the main game, because the payout structure is built around rare events.
Side bets and why their edges differ from the main game
The main blackjack wager has a house edge that depends on the exact rule set in force. A side bet has a different edge entirely, because it is a different game bolted onto the same shoe. The cards are dealt from the same deck, but the bet pays on a different event: a specific combination of your first two cards and the dealer's upcard, a total of exactly 23 across some set of cards, or a hand that matches a printed pattern.
This is where a label like side 23 becomes dangerous to guess at. If side 23 is a side bet that pays when a hand or a set of cards totals 23, the payout will be printed on the layout, and the house edge will be whatever that payout implies for the deck composition in use. You cannot derive that edge from the name. You can only read it from the published payout and the number of decks, or from a strategy source that names the exact rule set.
| Wager type | What it pays on | Where the edge comes from | Where the number is printed |
|---|---|---|---|
| Main blackjack bet | Beating the dealer without busting | The rule set: deck count, dealer stand rules, doubling and splitting rules, blackjack payout | Table sign and layout |
| Side bet | A specific card combination or total | The payout odds versus the true probability of the event | Side bet zone on the layout |
| Rule variant | Changes how the main hand resolves | The altered rule's effect on expected loss | Table sign |
The reason strategy charts exist is that the correct play changes when the rules change. A chart built for a six-deck shoe where the dealer stands on soft 17 will not be exactly right for a double-deck game where the dealer hits soft 17. The chart is a lookup table for the rule set, not a universal law. If a table sign shows a rule you have not seen before, the chart for that table is the one that includes that rule.
The procedural mistakes that cost new players before the first card
The most expensive mistakes at a blackjack table are not about hitting or standing. They happen before or around the hand, and they are procedural.
The first is buying in mid-shoe and betting before reading the sign. A player who sits, throws chips into the circle, and only then notices a side bet zone or a rule line has already committed money to a game they did not fully read. The fix is simple: read first, buy in second, bet third.
The second is touching the cards or the chips after the hand starts. In most shoe-dealt games the cards are dealt face up and players never touch them. In pitch games, where cards are dealt face down, the rule is to handle them with one hand and keep them above the table. Chips already wagered stay in the circle until the hand resolves. Reaching into the circle mid-hand reads as an attempt to alter the wager, and the dealer will stop it.
The third is placing a side bet without knowing what it pays on. A side bet zone with a number next to it is an invitation to read, not an instruction to bet. The layout prints the event and the payout. If either is unclear, the dealer will explain it. Betting on a label you do not understand is the one mistake that turns a curiosity like side 23 into a real loss.
What to do when the label is still unclear
If the sign is worn, the print is small, or the dealer's explanation does not match what you see, step back from the table and ask the floor supervisor. Every venue has a duty to make its table rules available to players before they wager, and the floor is the person who can point to the exact line or the exact zone and confirm what it means. You can also ask to see the printed rule sheet for that table, which some venues keep at the podium.
What you should not do is assume that a numbered label from one venue means the same thing at another. Side bet numbering is not standardised across the industry. A "side 23" at one house could be a card-total side bet, while at another it could be a progressive jackpot qualifier or a rule line about payout odds. The only version that matters is the one printed on the table in front of you.
FAQ
Is side 23 a standard blackjack side bet?
No. Blackjack side bets have names like Perfect Pairs or 21+3 in many venues, but numbering is a house-specific practice. A numbered side bet label means whatever that venue's layout and rule sheet say it means. There is no industry-wide definition of side 23.
Where do I find the rules for a specific blackjack table?
Look for the table sign, usually a plastic stand on the felt near the shoe or a card clipped to the dealer's side. It lists the deck count, dealer standing rules, doubling and splitting rules, blackjack payout, and any local variants. The side bet zones on the felt carry their own payout text.
Can I ask the dealer what a side bet means before I play?
Yes, and you should. Dealers expect questions about the layout and the rules, and they will point to the exact zone or sign line you are asking about. If the dealer is mid-hand, wait for the hand to finish, then ask before you place the wager.
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