Blackjack Side Bets Explained

Blackjack side bets are optional extra wagers you can place alongside your main blackjack hand, paying out on specific card combinations such as a pair or a three-card poker hand. They are marketed as a chance at a big multiplier for a small stake, but they are mathematically separate from the game itself and carry a much larger house edge than the base game. This guide explains the most common side bets — insurance, 21+3 and Perfect Pairs — plus a few others, how each one works, what it pays, and the real cost of playing them.

What are blackjack side bets?

A side bet is a separate wager, placed before the cards are dealt, that is settled on its own rules and does not affect how your main blackjack hand plays out. You put chips in a marked circle on the felt (or tap an extra betting spot online), and the bet wins or loses based only on the cards it names — regardless of whether you win, lose or push the main hand.

Side bets exist because they are profitable for the casino and entertaining for players: they add volatility and the occasional large payout. Because they are optional, you never have to place one. Understanding them matters mainly so you can make an informed choice rather than treat them as a routine part of the game. If you are still learning the core rules, start with our guide on how to play blackjack before adding any extra wagers.

How are side bets different from the main game?

The key difference is the house edge — the average share of each bet the casino keeps over time. Played with correct basic strategy, the main blackjack game has a house edge of roughly 0.5%. Common side bets carry edges several times higher, often in the 4–10% range and sometimes above 20%. In plain terms, for every $100 wagered on the base game you would expect to lose about 50 cents on average, but on a typical side bet you could expect to lose several dollars. If you want the fuller picture of how this number is calculated, see our explainer on how casino games work.

Insurance: the most common side bet

Insurance is a side bet that the dealer has a blackjack, offered whenever the dealer’s up card is an ace. Despite the reassuring name, it is not protection — it is a separate wager, usually for up to half your original bet, that pays 2:1 if the dealer’s hole card is a ten-value card (completing a blackjack).

Here is how it resolves: if the dealer does have blackjack, your main hand loses (unless you also have blackjack) but the insurance bet pays 2:1, roughly cancelling the loss. If the dealer does not have blackjack, you lose the insurance stake and play the hand normally. A related offer, “even money,” is simply insurance taken when you already hold a blackjack.

The math is unfavourable. In a standard six-deck shoe, insurance carries a house edge of about 7.4% for a player who is not counting cards, because the dealer completes a blackjack well under the one-in-three rate the 2:1 payout would need to break even. For this reason, basic strategy says to decline insurance every time.

21+3: a three-card poker side bet

The 21+3 side bet combines your first two cards with the dealer’s face-up card to make a three-card poker hand. It is settled before you make any playing decisions and is completely independent of your main hand — hitting, splitting or doubling later does not change it, and the side bet can win even if your main hand loses.

You win if those three cards form one of these hands:

• Flush — all three cards share the same suit.
• Straight — three cards in consecutive rank, any suits.
• Three of a kind — three cards of the same rank.
• Straight flush — three consecutive cards of the same suit.
• Suited three of a kind — same rank and same suit (possible because several decks are in play); the top payout, but only on tables that list it.

Payouts vary a lot by casino and software. The original version paid a flat 9:1 on any winning hand. Many modern tables use a “top-heavy” schedule such as 100:1 suited trips, 40:1 straight flush, 30:1 three of a kind, 10:1 straight and 5:1 flush. The house edge depends heavily on that paytable: a flat 9:1 game runs about 3.2% on six decks (and a little lower on eight), while the common top-heavy table is also around 3.2% — but weaker-paying versions can climb past 7%. Among popular side bets, 21+3 is one of the lower-edge options, yet it is still many times more expensive than the base game. Always check the posted paytable before betting.

Perfect Pairs: betting on a matching pair

The Perfect Pairs side bet wins when your first two cards form a pair, with bigger payouts for closer matches. It ignores the dealer entirely and is decided the moment your two cards are dealt.

There are three winning tiers, from smallest to largest payout:

• Mixed pair (also called red/black pair) — same rank, different colours (for example 7♥ and 7♣). Typically pays 5:1 or 6:1.
• Coloured pair — same rank and same colour but different suits (for example 7♥ and 7♦). Typically pays 10:1 or 12:1.
• Perfect pair — same rank and same suit (for example two 7♥). Typically pays 25:1 or 30:1.

A counter-intuitive quirk sets Perfect Pairs apart: its house edge falls as more decks are added, the opposite of the base game. With more decks there are more matching cards available to complete a pair. Using the Wizard of Odds analysis of the common 30:10:5 table, the edge is about 5.79% on six decks and about 3.37% on eight decks; on the 25:12:6 table it is about 6.11% (six decks) and 4.10% (eight decks). Two-deck versions are brutal, running past 20%. Across typical casino tables the edge sits roughly in the 4–11% band, far above the base game.

Other popular blackjack side bets

Casinos offer dozens of proprietary side bets; names and paytables differ by venue and game studio. A few you may encounter:

Lucky Ladies

Lucky Ladies pays when your first two cards total 20, with escalating payouts for a suited 20, a matched 20 (two identical cards) and the premium queen-of-hearts pair. It is one of the most expensive bets on the felt: depending on the paytable and deck count, the Wizard of Odds puts the six-deck edge between roughly 17.6% and 24.7%. It is widely described as a “sucker bet.”

Buster Blackjack

Buster Blackjack pays when the dealer busts (goes over 21), with larger payouts the more cards the dealer busts with. Its house edge typically runs about 6–9% depending on the paytable and number of decks.

Royal Match

Royal Match pays when your first two cards are the same suit, with a jackpot-style payout for a suited king and queen (a “royal match”). The edge varies widely with the rules but usually falls around 4–7%.

Whatever the name, the pattern holds: the rarer the winning combination and the flashier the top payout, the larger the edge you are paying for the chance at it. For a wider look at how these games are built, browse our overview of casino table games.

Side bet house edge comparison

The table below compares the main side bets with the base game. Figures are approximate and depend on the exact paytable and number of decks — always read the posted rules.

Common mistakes with side bets

The most common mistake is treating side bets as part of basic strategy. They are not — no side bet improves your odds on the main hand, and no amount of skilful play on the main hand changes a side bet’s outcome. A few other pitfalls to avoid:

• Taking insurance “to protect” a good hand. Insurance is a standalone bet on the dealer, not protection; basic strategy declines it every time for non-counters.
• Assuming all paytables are equal. The same side bet can carry very different edges from table to table. A single step down in a payout can add several percentage points to the house edge.
• Ignoring deck count. Perfect Pairs is cheaper on eight decks than two; 21+3 shifts with deck count too. The placard matters.
• Chasing losses with bigger side bets. Because side bets are high-variance, a losing streak can escalate quickly. Set a limit before you sit down and stop when you reach it.
• Believing a “system” beats them. Side bet outcomes are independent random events; betting patterns do not change the long-run edge.

Are blackjack side bets worth it, and who do they suit?

Side bets are worth it only as paid entertainment, not as a way to win more over time. Every one of them costs more per dollar wagered than the base game, so a player whose goal is to make their bankroll last should skip them and stick to the main hand played with basic strategy.

They may suit a player who understands the trade-off and simply enjoys the extra chance at a large multiplier, treats the stake as the price of entertainment, and keeps the amounts small relative to their main bet. If you do choose to play one, pick the lowest-edge option available (21+3 or an eight-deck Perfect Pairs table tends to be less costly than Lucky Ladies), bet the minimum, and treat any win as a bonus rather than a plan.

Responsible gambling

This article is for information only. It is not betting advice, and nothing here improves your chances of winning — side bets carry a significantly higher house edge than the base blackjack game and, like all casino games, favour the house over time. You must be of legal gambling age in your province (18 or 19 in Canada, depending on where you live) to play. Set a budget before you start, never bet money you cannot afford to lose, and never chase losses. If gambling is causing harm, free, confidential help is available in Canada — for example, ConnexOntario at 1-866-531-2600. See our responsible gambling resources for Canada for limits, self-exclusion tools and provincial help lines.

Frequently asked questions (FAQ)

Do blackjack side bets improve my chances of winning?

No. Side bets are separate wagers with their own, higher house edge, and they do not change the odds of your main hand. They add volatility and the chance of a large payout, but over time they cost more per dollar than the base game.

Should I ever take insurance?

For a player using basic strategy and not counting cards, no. Insurance carries a house edge of about 7.4% in a six-deck game because the dealer completes a blackjack less often than the 2:1 payout would require to break even.

Which blackjack side bet has the lowest house edge?

Among the common ones, 21+3 and Perfect Pairs on tables with more decks tend to have the lowest edges, often around 3–6% depending on the paytable. That is still many times higher than the roughly 0.5% edge on the base game played correctly.

What is the difference between a perfect pair, a coloured pair and a mixed pair?

A mixed (red/black) pair is the same rank in different colours and pays the least. A coloured pair is the same rank and colour but different suits. A perfect pair is the same rank and the same suit, and pays the most — usually 25:1 or 30:1.

Can I win a side bet while losing the main hand?

Yes. Side bets are settled independently, so a bet like 21+3 or Perfect Pairs can pay out even if your main blackjack hand loses, and vice versa.