Side bets in blackjack are tempting. Perfect Pairs, 21+3, Lucky Ladies — they look exciting and offer huge payouts. But there's a reason casinos push them: the house edge is 5-25%, compared to just 0.5% for the main game. This guide breaks down every popular side bet, the real odds, and why you should avoid them.
📋 In this guide
🎲 What Are Side Bets in Blackjack?
Side bets are optional wagers placed alongside your main blackjack bet. They're based on specific combinations of your first two cards, the dealer's upcard, or both. They're completely independent of the main game — you can win a side bet even if you lose the hand.
Why Casinos Love Them
Side bets have massive house edges. While the main game gives the casino just 0.5%, side bets give them 5-25%. They're designed to look exciting with big payouts, but the math is heavily stacked against you.
⚠️ Critical Warning
Side bets can drain your bankroll 10-50 times faster than the main game. A $10 side bet with 10% house edge loses you $1 per bet on average — the same as $200 in main game bets at 0.5% edge.
🃏 Perfect Pairs Side Bet
Perfect Pairs pays if your first two cards form a pair. The payout depends on the type of pair.
Payout Structure
| Pair Type | Description | Typical Payout | Probability (6 decks) |
|---|---|---|---|
| Mixed Pair | Different colors (e.g., 5♠ and 5♥) | 5:1 | 1.9% |
| Colored Pair | Same color, different suit (e.g., 5♠ and 5♣) | 10:1 | 0.9% |
| Perfect Pair | Same suit (e.g., 5♠ and 5♠) | 30:1 | 0.5% |
House Edge
- Single deck: ~5%
- Six decks: ~7-8%
- Eight decks: ~8-10%
True Odds vs Payout
The true odds of any pair are about 1 in 17 hands. But the average payout is around 7:1, meaning you're getting significantly less than fair value.
📊 Example: In a 6-deck game, you'll hit a pair about 5.9% of the time. Average payout ~7:1 means expected value of -8%.
🃏 21+3 Side Bet
21+3 combines blackjack with three-card poker. It pays based on your first two cards and the dealer's upcard forming a poker hand.
Payout Structure
| Hand Type | Description | Typical Payout |
|---|---|---|
| Flush | All same suit | 5:1 or 9:1 |
| Straight | 3 consecutive ranks | 10:1 |
| Three of a Kind | All same rank | 30:1 |
| Straight Flush | Consecutive same suit | 40:1 |
| Suited Three of Kind | Three of kind same suit | 100:1 |
House Edge
- Typical range: 6-11%
- Best versions: ~6% with favorable payouts
- Worst versions: >11% with low flush payouts
Variations
Different casinos have different pay tables. Always check the payout before playing — a 9:1 flush payout is much better than 5:1.
📊 Tool: Use our Odds Calculator to compare different 21+3 pay tables.
💃 Lucky Ladies Side Bet
Lucky Ladies pays if your first two cards total 20. The better the 20, the higher the payout.
Payout Structure
| Hand Type | Description | Typical Payout |
|---|---|---|
| Any 20 | Any two cards totaling 20 | 4:1 |
| Suited 20 | 20 with both cards same suit | 10:1 |
| Matched 20 | Same rank (e.g., 10♠ and 10♥) | 25:1 |
| Queen of Hearts Pair | Both cards Queen of Hearts | 200:1 |
House Edge
- Typical: 15-25%
- One of the worst bets in blackjack
⚠️ Avoid Lucky Ladies
With 15-25% house edge, Lucky Ladies is mathematically terrible. For every $100 you bet, you lose $15-25 on average. This is worse than most slot machines.
🛡️ Insurance Side Bet
Insurance is offered when the dealer shows an Ace. You bet up to half your original bet that the dealer has blackjack. It pays 2:1.
Why Insurance Is a Bad Bet
The dealer will have blackjack about 4 out of 13 times (30.8%) when showing an Ace. Fair odds would be about 2.2:1, but insurance pays only 2:1.
House Edge
- Basic strategy players: 5-7% house edge
- Card counters: Can gain edge at high counts (+3 or higher)
The "Even Money" Trap
When you have a blackjack and the dealer shows an Ace, casinos offer "even money" — you take a guaranteed 1:1 payout instead of playing for 3:2. This is just insurance in disguise and is equally bad.
🎯 Pro Tip: Never take insurance unless you're counting cards and the true count is +3 or higher. Learn card counting to profit from insurance.
👑 Royal Match Side Bet
Royal Match pays if your first two cards are the same suit. A "royal match" (King and Queen of the same suit) pays extra.
Payout Structure
| Hand Type | Description | Typical Payout |
|---|---|---|
| Same Suit | Any two cards same suit | 2.5:1 or 3:1 |
| Royal Match | K♠ and Q♠ (or any royal pair) | 25:1 |
House Edge
- 2.5:1 payout: 10-12% house edge
- 3:1 payout: 5-7% house edge
Look for the 3:1 version — it's still bad, but less terrible.
📊 Over/Under 13 Side Bet
This bet pays if your first two cards total over or under 13. It's simpler but still has a high house edge.
Payout Structure
- Over 13: Pays 1:1
- Under 13: Pays 1:1
- Exactly 13: Usually loses both
House Edge
- Over 13: ~10%
- Under 13: ~10%
The push on 13 creates the house edge. In a 6-deck game, about 7% of hands total exactly 13.
❓ Should You Play Side Bets?
The Mathematical Truth
Here's the comparison:
| Bet Type | House Edge | Loss per $100 |
|---|---|---|
| Main Game (perfect play) | 0.5% | $0.50 |
| Perfect Pairs | 5-10% | $5-10 |
| 21+3 | 6-11% | $6-11 |
| Insurance | 5-7% | $5-7 |
| Royal Match | 5-12% | $5-12 |
| Lucky Ladies | 15-25% | $15-25 |
When Side Bets Make Sense
- Never for profit: No side bet is profitable for basic strategy players
- Card counting exceptions: Insurance and sometimes 21+3 can become profitable at extremely high counts
- Entertainment only: If you understand you're paying for excitement, treat it like a slot machine
The "Fun Money" Rule
If you must play side bets, limit them to small amounts you're willing to lose entirely. Set a budget: e.g., "I'll spend $20 on side bets this session, and when it's gone, I stop."
⚠️ Final Warning
Side bets are designed to look exciting while quietly draining your bankroll. A $10 side bet every hand adds up fast — after 100 hands, you've risked $1000 with a 10% expected loss of $100. Stick to the main game.
🧮 Calculate Side Bet Odds Yourself
Use our free odds calculator to see the true probability and house edge for any side bet variation.
💰 Stick to the Main Game
These casinos offer 3:2 blackjack with player-friendly rules and the lowest house edge. Avoid side bets here too.