While Blackjack Insurance is never a good idea - there are plenty of more entertaining Blackjack side bets you can accept. And some of these can really increase the tension of a game. Extra payout opportunities or even jackpots - there are a number of options you can choose to enhance your gameplay. You will win an insurance bet if the dealer’s second card is a ten or a picture card, thus giving him a blackjack. If it is any other card you will lose the bet. It pays out at odds of 2:1.

When playing blackjack, insurance is offered by the house to the player as a side bet away from the main game.

If the dealer is showing an ace face up then players will have the chance to take insurance. This is a bet on the dealer making blackjack by hitting a card worth 10 next. You can typically place up to half your stake on insurance and it pays at odds of 2/1.

If you take insurance and the dealer hits their natural, you will lose your original stake (assuming you didn’t also have blackjack) but you will win your side bet. This will lead to the following outcome:

• Main stake £10 loses – minus £10
• Insurance side bet £5 wins at 2/1 – plus £10
• Overall outcome of hand – break even

If the dealer does not draw a face card or 10 and thus does not have blackjack, they win your £5 bet on insurance and the rest of the hand plays out naturally. The last option is that you decline their seemingly kind offer of insurance and hope for the best, sticking to your existing £10 stake and seeing how the hand pans out. Odds of 2/1 for them to hit any 10, Jack, Queen or King certainly sounds like a good deal, but is it? Is insurance worth taking?

Insurance Is A Shocking Bet

Blackjack is a game where players rely on luck, but skill and maths are also required to give yourself the best chance of success. Optimal play is a method of play that tells you the “right” decision to make in any given situation you will face at the blackjack table. Unless you are card counting, this technique, also known as basic strategy, is irrefutable, mathematically proven and entirely flawless and minimises the house edge, which is the casino’s inbuilt advantage over the player. And the theory of optimal play is very clear about insurance: do not take it.

The overall house edge in blackjack is around 0.7%, with the precise figure varying according to rule and game differences such as the number of decks used, whether the dealer must stand on soft 17 and so on. That is a very low advantage and makes blackjack one of the most player-friendly games around. In theory, that means that on average a blackjack fan staking £10,000 over the course of 1,000 hands would expect to lose just £70.

So what is the house edge when it comes to a standalone bet on insurance? Well, rather than 0.7%, it is a whopping, wallet-walloping 7.4%, more than 10 times the standard advantage. The exact number depends on how many decks are being used, whether you take into account the cards that you can see elsewhere on the table (including your own) and a few other factors but in general a figure of 7% or more can be assumed for multi-deck games.

That means that for the vast majority of players taking insurance really is a very bad option. It increases the casino’s advantage and in the long term will yield significantly worse results than if you politely decline the dealer’s offer. We say “the vast majority” because, as already mentioned, those who are card counting may know that it is actually a good bet.

Blackjack is more or less unique among casino games in that what has gone before has an impact on what will happen next. If a roulette wheel lands on black 10 times in a row the odds for the next spin landing on black are still the same. However, in blackjack, if there has been a huge number of low cards dealt, someone who is counting cards or even just someone who is paying attention, will know that the remaining deck is heavily stacked with higher cards, including those that will complete a natural blackjack.

In such a situation an insurance bet would potentially be excellent value but this would only be the case if you know there are sufficient 10s remaining in the pack to make the numbers work. The average player won’t, and therefore insurance remains an option that should be disregarded.

Proof That Insurance Doesn’t Pay

We can illustrate with some relatively simple maths that insurance is bad value by considering the equation with just a single 52-card deck in play. Insurance is not as bad in single deck games but the house edge is still seriously big at just under 6%.

Let us assume you have two cards showing, neither of which are worth 10 and the dealer has their shiny ace. There are 49 unknown cards in the deck, of which 16 (four 10s, four jacks, four queens and four kings) will complete the dealer’s natural and land an insurance bet, should you be foolish enough to have made one.

That means that you would expect to win the bet on insurance around 33% of the time, just under in fact at 32.65%. You would win 16 games out of 49 and lose 33. Each win would yield a profit of £2 (based on a flat £1 stake) whilst each loss would lose £1, meaning an overall loss of £1 as below.

• 16 wins at 2/1 = £32 profit
• 33 losses = £33 loss
• Overall result = £1 loss

Should You Take Insurance In Blackjack

Although only losing £1, or one unit (of whatever your stake was) may not seem a lot, it is still a loss. Had you not made those bets, you would have more money in your pocket and would therefore have put less in the casino’s coffers. And remember, these are side bets, entirely separate from your own individual hand which would play out the same way whether you accept insurance or not.

What’s more, the situation we are describing above is the most favourable starting point for an insurance bet. It was a single-hand game where all 16 available 10s remained in the pack. A cruel irony of betting on insurance is that people often feel most compelled to accept it when they least should.

Why Never Take Insurance In Blackjack

For example, a player who has 20 with two cards, showing two kings for example, may feel insurance is a good bet because they really don’t want to lose with 20. 21, or a natural, is the only way they can lose and so they accept the insurance. However the very presence in their hand of two cards worth 10 means there are two less in the pack for the dealer to hit. That means they are betting on something with just a 14/49 chance of winning, their chances of success having dropped from 32.65% down to just 28.57%!

Odds of 2/1 imply a probability of success of 33.33% so if the probability of the event occurring is less than that, the bet is a bad one. Therefore, unless you are confident that more than a third of the remaining cards in the deck are 10s or face cards, insurance is absolutely not worth taking and is a bad bet.

Insurance in blackjack should be classified as a sucker bet. It is also classified as a side bet, available in most games of 21. It is offered when the dealer holds an Ace as their up-card. The bet is only open before the dealer checks or draws the hole card. For players not holding a natural blackjack, if insurance is taken, they must place an additional wager equal to half of their original wager. If the dealer goes on to draw a card valued at 10 to make blackjack, the insurance bet is paid out at 2:1.

Take Insurance In Blackjack

For players who are holding a natural blackjack, they may also take insurance (called maximum insurance). Here the player forfeits the 3:2 payout for a winning blackjack hand in place for a guaranteed even-money (1:1) payout, regardless of what the dealer has.

The reasoning behind insurance bets is when dealers have a visible Ace card, chances of them drawing a ten-valued card is just less than one in three, so this side bet ‘insures’ against the possibility of such an outcome, to make up for the inevitable loss/push.

Insurance Is A Bad Wager

Picture this: the dealer is showing an Ace. Your hand, in comparison, is terrible. You’ve already had a few hard losses and don’t fancy losing another round. Suddenly, the dealer asks you if you’d like to insure your bet. You already have a good hunch he/she is going to draw a 10 or face-card to make blackjack, so this sounds like a good way out. Or this: the dealer has a face-up Ace but you have a two-card natural blackjack. The 3:2 payout for your blackjack is mighty tempting, but if the dealer also draws a 10 and makes blackjack as well, taking a guaranteed win with maximum insurance, rather than risking a push, sounds like the best move.

Wrong and wrong.

At first glance, insurance bets do seem like good side wagers. They sound like a safe back-up plan in an intense game of blackjack, where a dealer two-card natural seems likely. And the way many blackjack dealers describe the bet makes it seem the best and most logical move you can make in the dreaded situation of a dealer face-up Ace. Unfortunately, this is an illusion and the casino is the only party who will ever make money from such a bet in the long run.

Don’t let yourself be fooled by the way casinos word it or how other players may recommend it, whatever reason they try to offer: place your bets elsewhere. “Insuring weak hands is necessary,” or “it is only half of your original bet;” such rationale is based on the wrong sort of game-play logic. If you are relying too heavily on intuition or superstition to govern your hands, it’s likely you won’t be winning in the long-term.

From one blackjack enthusiast to another, steer clear of insurance bets: it’s almost always a wasteful bet. We are going to explain to you what insurance bets really are, show you the odds behind the bet, and analyse a typical game of 21 to illustrate why it is a sucker’s bet.

How Insurance Bets Work

As a side bet, insurance bets have nothing to do with the cards we have. While an insurance bet is commonly thought of as a wager which ‘protects’ us in the case of a dealer blackjack, in actuality, it is simply a side wager on the dealer having/drawing a natural blackjack, and nothing more. Taking insurance while your own hand is a two-card natural (maximum insurance), or a crappy 15, makes no difference, because it has no bearing on it.

Let us assume we put down a $10 bet, are not dealt blackjack, and the dealer shows an Ace. If we take insurance, half of our original bet ($5) is put on the table to be used as insurance. Now we can’t win both bets, so already we know one of them is going to be a loss. If the dealer’s shows/draws a King as his/her second card, they have blackjack. This means we win $10 (get back a total of $15) from our insurance bet. But we’ve also lost our original wager of $10 because the dealer beats us with blackjack. So we have broken even in the end.

Examining the alternate outcome of the dealer’s hand, let’s say the dealer does not hit blackjack. This means we lose our insurance bet of $5, and play out our initial hand of $10. If we win, we make a $5 profit, is we lose, we lose $15 for the round. but it is essentially a wasteful side-bet in the long-run.

So the possible outcomes when taking insurance, using the above as an example, are as follows:

• A $5 win.
• Break even
• A $15 loss.

The possible outcomes when not taking insurance, using the above as an example, are as follows:

Do You Take Insurance In Blackjack

• A $10 win.
• A $10 loss.

Looking at the outcomes this way, you’d rather opt for a $10 win or $10 loss when the dealer holds an Ace, as opposed to a maximum win of $5 and a potential loss of $15, not just in the long run, but in the short-term too.

Additionally, in every full 52-deck of cards, four out of every 13 cards are worth 10 points (in blackjack); the cards which would lead to a dealer blackjack after showing an Ace. If you hypothetically wagered $10 as an insurance bet every time the dealer showed an Ace to ‘insure’ yourself against the worst possible outcome (let’s say 13 times), on average, you would win four of the bets (a profit of $80 with a 2:1 payout), and lose the other nine bets (loss of $90). The house gains $10, and you lose more money in the long-run.

This demonstrates the basic explanation as to why, in the long run, insurance is wasteful and you’d be much better served not taking it. The following sections drill further to explain the high house edge of insurance bets.

Insurance Bet Payout, Odds & House Edge

While no casino bets have payouts which are true reflections of their exact winning odds, as that would eliminate the house edge, it is important to note the differential between the payout and the actual winning odds (which is the number of ways of winning against the number of ways of losing), as this accounts for the house’s advantage.

The payout of a regular insurance bet (when the player is not holding blackjack) is 2:1. A typical 52-card deck on an insurance bet play (only one player v dealer) has 49 unseen cards and three seen cards at the start of the game (dealer’s Ace, and player’s two cards). If we begin with the assumption our hand does not contain a 10-value card, then there are 16 cards worth 10 points in the deck, and 33 other cards.

Let us examine three possible scenarios, with an original initial wager of $20, and an insurance side bet of $10, to determine the true odds of the dealer hitting blackjack by drawing a 10-valued card:

1/ We have no 10-value cards in our hand: there are 16 ten-value cards in the deck, and 33 other cards. So to get the actual odds of winning the insurance bet, we divide 33 by 16, which equates to 2.0625 to 1. So if all was fair in the casino world, we’d actually receive a 2.0625 to 1 payout, or approximately $20.60 from our $10 bet. But as the house needs to profit, this is not possible.

2/ We have one 10-value card and a card that is not worth 10: there are only 15 ten-valued cards remaining, and 34 others. 34/15 works out to be actual winning odds (chances) of around 2.2666/1; so ideally we’d like a 2.2666 to 1 payout, or approximately $22.60 from our $10 bet.

3/ We have two ten value cards in our hand: This means there are only 14 ten-value cards remaining and 35 others. Divide 35 by 14, and we get odds of 2.5 to 1; so ideally, $25 we would like to receive from our $10 bet. This is thus the worst possible hand to take the insurance bet (even though you should not take it at all), because the odds are so out of our favour.

Only with one deck and when the player is holding no 10s, is the house edge for insurance below 3%. It sky-rockets after that.

Insurance May Seem Ideal, But It Isn’t

Many players argue on other sites, books and forums that when the shoe has more ten-valued cards than usual, insurance is a great way to make sure you cover potential loses and quite possibly earn a healthy payout. Yes, ultimately this would make sense if we knew when to take it, but the only way any player can know when such an ideal situation occurs is if you know how to count cards.

Essentially, while many players fall for insurance bets, they aren’t profitable or wise, and have no bearing on our hand. Many players will also take maximum insurance with a two-card natural hand, rather than risk a push, but this is more disadvantageous in the long run, since the Ten in the player’s blackjack means it is less likely the dealer has blackjack.

Insurance is taken far too often. Remain informed about its lack of tactical advantage or logic before playing. And besides, if you take insurance every now and then just because you have a hunch, you are playing on instinct, which is a dangerous method of play in blackjack, as you are abandoning basic blackjack strategy. We can play our hand based on the assumption the dealer has blackjack, but don’t insure, as the odds are very much against us.