Blackjack Side Bets Explained: Are They Worth Your Money?

If you have played online blackjack Australia for any length of time, you have almost certainly encountered side bets. Those little extra wagering circles on the table — Perfect Pairs, 21+3, Insurance, Lucky Ladies — promising big payouts for a small additional stake. They are colourful, tempting, and available at virtually every blackjack table, both online and in Australian land-based casinos.

But are blackjack side bets actually worth your money? In this comprehensive guide, we analyse every major side bet in detail: how they work, what the odds are, what the house edge is, and whether you should be spending your hard-earned dollars on them. Spoiler alert: the mathematics are not kind to most side bets. But understanding them is essential for making informed decisions at the table.

What Are Side Bets in Blackjack

A side bet is an optional wager placed in addition to your main blackjack bet, typically before the cards are dealt. Side bets have their own payouts and odds, which are completely independent of the main blackjack hand. You can win your side bet and lose the main hand, or vice versa.

Most side bets are based on the initial cards dealt — your first two cards, the dealer’s upcard, or some combination thereof. They pay out for specific card combinations like pairs, suited cards, poker hands, or particular totals. The appeal is straightforward: for a small additional wager (often $1-$25), you can potentially win a large payout (sometimes 100:1 or more) independent of whether you win the actual blackjack hand.

Side bets are available at virtually every blackjack table, both in live dealer and RNG online games, as well as at Australian land-based casinos. The most common side bets you will encounter are Perfect Pairs and 21+3, but many others exist.

Why Casinos Offer Side Bets (Higher House Edge)

The answer is simple: money. Standard blackjack with basic strategy has a house edge of approximately 0.5%, which is one of the lowest of any casino game. This is great for players but means relatively thin margins for the casino. Side bets have significantly higher house edges — typically 2-11%, and sometimes much more — which makes them far more profitable for the house.

From the casino’s perspective, side bets are an elegant solution to a fundamental problem: how do you increase revenue from a game where skilled players can nearly eliminate your edge? The answer is to offer optional bets with much higher margins that feel exciting and optional, so players do not feel forced into a bad deal but voluntarily choose it for the entertainment value.

Consider the mathematics: if a table has six players, each betting $10 on the main game and $5 on a side bet, the casino’s expected revenue per hand is: $60 × 0.5% = $0.30 from the main game, plus $30 × 6% = $1.80 from the side bet. The side bet, which represents only 33% of the total wagered, generates six times more revenue for the casino than the main game. That is why casinos promote side bets so enthusiastically.

Perfect Pairs

Perfect Pairs is one of the most popular and widely available blackjack side bets. It pays out if your first two cards form a pair.

How It Works

Before the hand is dealt, you place a Perfect Pairs bet alongside your main wager. If your first two cards are of the same rank (e.g., two 8s, two Kings), you win. The payout depends on the type of pair:

Pair Types and Typical Payouts

Probabilities (8-Deck Shoe)

In an 8-deck shoe (416 cards), the probabilities are:

• Perfect Pair: 1.44% (approximately 1 in 69 hands)
• Coloured Pair: 2.88% (approximately 1 in 35 hands)
• Mixed Pair: 2.88% (approximately 1 in 35 hands)
• Any pair: 7.20% (approximately 1 in 14 hands)
• No pair: 92.80%

House Edge

With the standard paytable above (25:1, 12:1, 5:1) and an 8-deck shoe, the house edge on Perfect Pairs is approximately 4.10%. This is one of the lower side bet house edges but still eight times higher than the base blackjack game. The house edge increases with fewer decks because the probability of a perfect pair (same suit) decreases.

Verdict

Perfect Pairs is one of the more reasonable side bets from a house edge perspective, but it is still a significant drain on your bankroll compared to the main game. If you enjoy the occasional pair bet, keep it to a small proportion of your main wager.

21+3

The 21+3 side bet combines your first two cards with the dealer’s upcard to form a three-card poker hand. It is named “21+3” because it merges 21 (blackjack) with 3-card poker.

How It Works

Your two cards plus the dealer’s upcard are evaluated as a three-card poker hand. The better the poker hand, the higher the payout.

Payouts and Probabilities (8-Deck Shoe)

House Edge

With the standard paytable above and an 8-deck shoe, the house edge on 21+3 is approximately 3.24%. This is one of the lowest side bet house edges available, though still significantly worse than the base game. Some paytables offer slightly different payouts which can push the edge higher or lower.

Verdict

21+3 is arguably the best mainstream side bet from a mathematical standpoint. Its house edge is the lowest of any commonly available side bet, and the poker hand element adds genuine entertainment value. If you are going to play any side bet, this is the most reasonable choice — but it is still six times worse than playing the base game alone.

Insurance: A Detailed Mathematical Analysis

Insurance deserves special attention because it is the most commonly offered and most commonly misunderstood side bet in blackjack. It is also one of the worst bets on the table.

How Insurance Works

When the dealer’s upcard is an ace, you are offered “insurance” — a separate bet of up to half your original wager that the dealer has blackjack (i.e., the dealer’s hole card is a ten-value card). Insurance pays 2:1 if the dealer has blackjack. If the dealer does not have blackjack, you lose the insurance bet and the hand continues normally.

The Mathematics: Why Insurance Is Always Wrong

Let us work through the mathematics with an 8-deck shoe (416 cards):

After the dealer shows an ace and you have two cards, 413 cards remain unknown. Of these, 128 are ten-value cards (10, J, Q, K × 4 suits × 8 decks = 128, minus any tens in your hand). Let us assume you hold two non-ten cards, leaving 128 tens among 413 unknown cards.

• Probability dealer has blackjack: 128/413 = 30.99%
• Probability dealer does NOT have blackjack: 285/413 = 69.01%

For a $10 insurance bet:

• Win scenario (30.99%): Win $20 (2:1 payout) = +$20
• Lose scenario (69.01%): Lose $10 = -$10

Expected value: (0.3099 × $20) + (0.6901 × -$10) = $6.20 - $6.90 = -$0.70

For every $10 insurance bet, you lose an average of $0.70. That is a house edge of approximately 7.40%. For context, this is worse than most pokies.

What About “Even Money”?

When you have a blackjack and the dealer shows an ace, you are offered “even money” — a guaranteed 1:1 payout instead of the standard 3:2. This is mathematically identical to taking insurance (the outcomes net to the same expected value) and is equally wrong. You should decline even money and take your chances with the full 3:2 payout.

Without insurance: 69.01% of the time you win 3:2 ($15 on a $10 bet), 30.99% you push (dealer also has blackjack, $0). Expected value = 0.6901 × $15 = $10.35.

With even money: 100% of the time you win $10. Expected value = $10.00.

Declining even money gives you $0.35 more per $10 bet on average. Over hundreds of hands where this situation arises, that adds up substantially.

The Only Exception: Card Counting

Insurance becomes a profitable bet only when you know the remaining deck is unusually rich in ten-value cards. Using the Hi-Lo card counting system, insurance becomes mathematically favourable at a true count of approximately +3 or higher. This is a niche situation that applies only to skilled card counters in live shoe games — it has no relevance for the vast majority of players.

Lucky Ladies

Lucky Ladies pays out if your first two cards total 20. The top payout, for two Queen of Hearts with a dealer blackjack, is typically 1000:1.

Paytable (Standard, 6-Deck)

House Edge

The house edge on Lucky Ladies is approximately 17-25%, depending on the specific paytable. This is one of the highest house edges of any standard side bet. The appeal of the 1000:1 top payout masks the reality that you will lose money far faster on this bet than almost any other wager in the casino.

Verdict

Avoid Lucky Ladies. The house edge is extreme, and the probability of hitting the top payout (QH+QH with dealer blackjack) is roughly 1 in 1.4 million. You are statistically more likely to be struck by lightning than to hit this payout in a typical playing career.

Royal Match

Royal Match pays out if your first two cards are of the same suit. If they are specifically a King and Queen of the same suit (a “Royal Match”), the payout is much higher.

Standard Payouts

• Royal Match (suited K+Q): 25:1
• Suited pair (any two cards of the same suit): 2.5:1 or 3:1
• No match: Loss

House Edge

Approximately 3.7-6.7%, depending on the number of decks and specific paytable. The single-deck version has the lowest house edge, while multi-deck versions are worse because the Royal Match probability remains roughly constant but the suited pair probability changes.

Verdict

Royal Match is a middle-of-the-road side bet. The house edge is moderate, and the simplicity of the bet (same suit = win) is easy to understand. It is not the worst side bet available, but there is no compelling reason to play it regularly.

Super Sevens

Super Sevens pays out when your initial cards include sevens, with escalating payouts for each additional seven dealt.

Standard Payouts

• First card is a 7: 3:1
• First two cards are unsuited 7s: 50:1
• First two cards are suited 7s: 100:1
• First three cards are unsuited 7s: 500:1
• First three cards are suited 7s: 5000:1

House Edge

Approximately 11-12%. The allure of the 5000:1 top payout disguises an extremely unfavourable mathematical proposition. The probability of three suited sevens is roughly 1 in 550,000 in a 6-deck game.

Verdict

Super Sevens has one of the highest house edges of any common side bet. The lottery-like top payout is essentially unreachable in normal play. Avoid.

Bust It

Bust It pays out based on how many cards it takes the dealer to bust. You win if the dealer busts; you lose if the dealer makes a standing hand (17-21).

Standard Payouts

House Edge

Approximately 6-8%, depending on the exact paytable and rules. The dealer busts approximately 28-29% of the time in a standard shoe game, so you are losing this bet more than 70% of the time.

Verdict

Bust It is moderately entertaining — rooting for the dealer to bust adds an extra layer of engagement to the hand. However, the house edge is substantial, and the most common outcome (dealer busts with 3 cards) only pays 1:1. Not recommended for regular play.

Lucky Lucky

Lucky Lucky is based on your first two cards plus the dealer’s upcard totalling specific values, with the best payouts for totals of 19, 20, and 21.

Standard Payouts

House Edge

Approximately 2.6-3.9%, making it one of the lower-edge side bets available. The relatively frequent payouts for totals of 19 and 20 keep the hit rate reasonable.

Verdict

Lucky Lucky has one of the better house edges among side bets, comparable to 21+3. The structure with multiple payout levels creates frequent small wins and occasional large ones. If you must play a side bet, Lucky Lucky (where available) is a reasonable choice alongside 21+3 and Perfect Pairs.

Hot 3

Hot 3 is similar to Lucky Lucky, paying out based on the three-card total of your first two cards plus the dealer’s upcard.

Standard Payouts

• Suited 7-7-7: 100:1
• Unsuited 7-7-7: 25:1
• Total of 21 (3 cards): 4:1
• Total of 20: 2:1
• Total of 19: 1:1
• Anything else: Loss

House Edge

Approximately 2.5-6%, depending on the paytable. Some versions are quite favourable (around 2.5%), while others with reduced payouts can push above 6%.

Verdict

Hot 3 is a decent side bet when the paytable is generous, with a house edge in the same ballpark as 21+3 and Lucky Lucky. Check the specific paytable — the presence or absence of the 19 pays 1:1 tier makes a significant difference to the overall edge.

Over/Under 13

This simple side bet pays out if the total of your first two cards is over 13 (Over 13) or under 13 (Under 13). A total of exactly 13 loses both bets.

Details

• Over 13: First two cards total more than 13. Pays 1:1
• Under 13: First two cards total less than 13. Pays 1:1
• Exactly 13: Both bets lose

House Edge

Over 13: Approximately 6.5%. Under 13: Approximately 10%. The Under 13 bet has a higher edge because aces count as 1 in this bet, making low totals less common than you might intuitively expect.

Verdict

Over/Under 13 is one of the simpler side bets but offers poor value. The house edges are high, and the 1:1 payout provides no excitement factor to compensate. This bet is particularly popular in land-based casinos in some jurisdictions but is rarely found online. Skip it.

Side Bet House Edge Comparison Table

Here is every common blackjack side bet ranked by house edge, from best to worst:

The comparison is illuminating. Even the best side bet (Lucky Lucky at 2.6%) has a house edge five times higher than the base blackjack game. The worst (Lucky Ladies at 25%) has a house edge fifty times higher. Every dollar you redirect from your main bet to a side bet dramatically increases the casino’s mathematical advantage.

When Side Bets Might Be Acceptable

We have been quite critical of side bets from a mathematical standpoint, and rightly so. But gambling is not purely a mathematical exercise — it is also entertainment. Here are the limited circumstances where side bets might be acceptable:

For Fun, at Small Stakes

If you genuinely enjoy the excitement of side bets and treat them as an entertainment expense (like buying a movie ticket), small side bets can add enjoyment to your session. The key word is “small” — your side bet should be no more than 5-10% of your main bet. If your main bet is $20, a $1-$2 side bet adds a bit of excitement without significantly impacting your overall expected losses.

When the Paytable Is Unusually Generous

Paytables vary between casinos and platforms. Occasionally, you may encounter a version of 21+3 or Perfect Pairs with a more generous paytable that reduces the house edge below 3%. While still worse than the base game, this is more tolerable than the standard versions.

During Low-Stakes Sessions

If you are playing at the absolute minimum stakes purely for entertainment ($1 hands), adding a $1 side bet doubles your action but the actual dollar cost is trivial. At these stakes, the entertainment value may outweigh the mathematical cost.

When They Are NOT Acceptable

• When your side bet is a significant proportion (20%+) of your main bet
• When you are chasing losses on side bets hoping for a big payout to get even
• When you are playing with a limited bankroll and need to maximise longevity
• When side bet losses are causing you stress or financial harm
• When you are taking insurance (always a losing proposition)

Side Bet Strategy

Is there a “strategy” for side bets? In the traditional sense, no — you cannot influence the outcome of any side bet through your decisions. However, there are strategic principles for managing side bets intelligently:

Rule 1: Never Let Side Bets Affect Your Main Game

Your basic strategy decisions on the main hand should be entirely independent of any side bets. Do not stand on a hand you should hit just because you have a promising side bet situation. The main game is where the real value lies.

Rule 2: Choose the Lowest-Edge Options

If you are going to play side bets, stick to 21+3, Lucky Lucky, or well-paytabled Perfect Pairs. Avoid Lucky Ladies, Super Sevens, and Insurance. The house edge difference between the best and worst side bets is enormous.

Rule 3: Set a Separate Side Bet Budget

Allocate a specific, small portion of your session bankroll to side bets, and stop playing them when that allocation is exhausted. This prevents side bets from draining your main game bankroll.

Rule 4: Never Increase Side Bet Size to Chase

The temptation to increase your side bet after a near-miss (e.g., two cards of the same suit when you needed a pair) is strong but irrational. Each deal is independent, and increasing your bet does not increase your chances of winning.

Progressive Side Bets

Some blackjack tables feature progressive side bets, where a portion of each wager contributes to a growing jackpot. The jackpot is typically won by a rare hand combination, such as four suited aces or a specific sequence of cards.

How They Work

A small portion of each progressive bet (typically $0.25-$1.00) is added to the jackpot pool. The jackpot grows until someone hits the qualifying hand, at which point it resets to a seed value. The qualifying hand is usually extremely rare — odds of 1 in 100,000 to 1 in several million.

House Edge

Progressive side bets typically have very high base house edges — 15-30% or more when the jackpot is at its seed value. As the jackpot grows, the effective house edge decreases. At a sufficiently high jackpot level (the “breakeven point”), the bet can theoretically become +EV (positive expected value) for the player. However, reaching this breakeven point is rare, and the variance is astronomical — you would need to play millions of hands to have a reasonable probability of hitting the jackpot.

Verdict

Progressive side bets are essentially a lottery ticket attached to a blackjack table. They are not a sound use of bankroll for any player concerned with expected value. The allure of a five- or six-figure jackpot is understandable, but the mathematics are firmly against you in the vast majority of situations.

Side Bets in Live Dealer Games

Live dealer blackjack tables typically offer side bets, with Perfect Pairs and 21+3 being the most common. Some live games feature unique side bet mechanics:

Evolution Lightning Blackjack

Lightning Blackjack applies random multipliers (2x-25x) to certain card values each round. If your winning hand includes a card with a multiplier, the payout is boosted accordingly. The base game pays a reduced 1:1 (instead of the standard 1:1 for wins and 3:2 for blackjacks in the original version), with the multipliers compensating. The house edge is approximately 0.78-1.25%, higher than standard blackjack but lower than most side bets because the multiplier mechanic is integrated into the base game rather than being a separate bet.

Evolution Infinite Blackjack Side Bets

Infinite Blackjack (unlimited players per table) offers four side bets: Any Pair, 21+3, Hot 3, and Bust It. These function identically to their standard versions, with the same house edges. The one-to-many format means all players receive the same initial two cards, so all side bet outcomes are identical for everyone at the table.

Playtech Quantum Blackjack

Similar to Lightning Blackjack, Quantum Blackjack applies random multipliers to certain card values. The maximum multiplier can reach 10x, potentially turning a standard win into a significant payout. The modified base game has a slightly higher house edge than standard blackjack, but the multiplier mechanic adds entertainment value for players who enjoy variable outcomes.

Should You Play Side Bets in Live Dealer?

The same mathematical principles apply in live dealer as in RNG games. Side bets have higher house edges than the base game. The live dealer format does not change the mathematics — the cards still follow the same probability distributions. If you enjoy side bets as entertainment at small stakes, they are fine in live dealer games. If you are playing for optimal expected value, skip them and focus on the main game with perfect live dealer strategy.

Frequently Asked Questions