By Sarah Mitchell | Last updated: April 2, 2026
Sarah Mitchell is a casino strategist with 8+ years of experience in live dealer games and applied probability analysis in casino environments.
Affiliate disclosure: We earn commissions from casinos we recommend. This does not affect our editorial independence.
Insurance in Blackjack: Is It Ever Worth Taking?
“Insurance?” the dealer asks. The Ace stares up at you. Your first instinct is protection — cover the bet, avoid the pain of a dealer blackjack. It sounds reasonable. It is one of the worst bets in blackjack.
The insurance bet carries a house edge of 7.7% in standard 6-deck play. That’s approximately 30 times worse than perfect basic strategy blackjack. This guide explains exactly why insurance is almost always the wrong choice, when the one exception applies, and how “even money” traps players into the same bad bet with a friendlier name.
What Is Insurance in Blackjack?
Insurance is a side bet offered when the dealer’s up card is an Ace. Before the dealer checks their hole card for blackjack, you can place an insurance bet of up to half your original wager.
- If the dealer has blackjack: Insurance pays 2:1. You lose your original bet but win the insurance bet — net result is breaking even.
- If the dealer does not have blackjack: You lose the insurance bet and continue playing your original hand.
The bet is framed as “protection” against a dealer blackjack. The framing is designed to appeal to loss aversion. The mathematics don’t support it.
The Math on Insurance
For insurance to be a break-even bet, the dealer would need blackjack exactly 1-in-3 times (33.3%) when showing an Ace.
In a 6-deck shoe, the distribution of 10-value cards is:
- Total cards per deck: 52
- 10-value cards per deck: 16 (10, J, Q, K)
- Total 10-value cards in 6 decks: 96
- Total cards in 6 decks: 312
Probability of dealer hole card being a 10-value: 96 ÷ (312 - 1) = 96 ÷ 311 = 30.87%
The dealer has blackjack approximately 30.87% of the time when showing an Ace — not the 33.3% required for insurance to break even.
House edge on insurance: = (2 × 0.3087) - (1 × 0.6913) = 0.6174 - 0.6913 = -0.074 = 7.4%
Some analyses produce 7.7% depending on remaining deck composition. Either way: the insurance bet loses approximately 7-8 cents per dollar wagered over the long run.
House Edge Comparison
| Bet | House Edge |
|---|---|
| Basic strategy blackjack | 0.28% |
| European roulette | 2.7% |
| Insurance | 7.7% |
| Lucky Ladies side bet | 17-25% |
Insurance is a poor bet by any measure, sandwiched between roulette and slot-level house edges.
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What Is “Even Money”?
Even money is insurance repackaged for players who hold a blackjack when the dealer shows an Ace.
Instead of risking the possibility of a push (dealer also has blackjack, paying nothing), the casino offers to pay your blackjack at 1:1 immediately — “even money” — instead of the usual 3:2.
The dealer’s pitch: “You’re guaranteed to win something. Take even money.”
The mathematics: Taking even money is mathematically identical to taking insurance on your blackjack hand. The expected value of declining even money is:
- P(dealer not blackjack) × 3:2 payout = 0.6913 × 1.5 = 1.037
- P(dealer blackjack) × push = 0.3087 × 0 = 0
Expected payout per $1 bet: $1.037 — above the $1.00 you get from even money.
Declining even money returns more expected value than accepting. The “guarantee” of 1:1 costs you 3.7 cents per dollar of blackjack bet over time.
When Should You Take Insurance?
Almost never. The exception: card counting.
When the true count reaches +3 or higher (in Hi-Lo counting), the deck has become significantly 10-rich. At true count +3, the probability of the dealer’s hole card being a 10-value approaches and exceeds the 33.3% breakeven threshold for insurance.
Specific threshold calculation (Hi-Lo):
- True Count +3: Insurance edge turns approximately neutral
- True Count +4 or higher: Insurance becomes a positive expected value bet
For non-counters: True count +3 essentially never occurs at typical live online tables, and reaching it reliably requires deep shoe penetration. Insurance remains a losing bet for all practical purposes.
Practical rule: If you’re not actively counting cards and tracking the true count, never take insurance. Ever.
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The Emotional Case for Insurance (and Why It’s Wrong)
Players take insurance for understandable psychological reasons:
“I just want to make sure I don’t lose to a blackjack.” Protecting against a specific outcome feels rational. But insurance doesn’t protect you — it pays even money on a bet you would have won 3:2 at the cost of 30 cents per dollar when no blackjack occurs.
“It gives me peace of mind.” Peace of mind at a 7.7% premium is expensive. Over 500 hands where you take insurance every time an Ace appears, you’ll see the Ace roughly 25-30 times. Each insurance bet costs you expected value.
“The dealer always seems to have blackjack when I don’t take it.” This is confirmation bias — you remember the painful times the dealer had blackjack without coverage and forget the majority of times they didn’t. The dealer has blackjack 30.87% of the time regardless of whether you take insurance.
Insurance Across Different Blackjack Variants
Single-deck blackjack: The probability of dealer blackjack when showing an Ace is slightly different because the deck is smaller. In single-deck, it’s approximately 31.4% — still below the 33.3% break-even threshold. Insurance is still negative EV in single deck without card counting.
European Blackjack (No Hole Card): Insurance is typically not offered since the dealer’s second card is dealt after player decisions. The question is moot.
Blackjack Switch: Insurance may have slightly different odds depending on the variant’s specific rule structure.
Live dealer blackjack (standard): The math above applies directly. Avoid insurance.
Insurance vs. Side Bets: The Same Trap
Insurance belongs to the same category of bets as blackjack side bets like Perfect Pairs and 21+3 — high house edge bets designed to generate extra casino revenue. They’re offered because:
- They sound reasonable (protection, bonus opportunity)
- They appeal to loss aversion or greed
- They carry 5-25x the house edge of basic strategy play
The correct response to all of them is the same: decline and focus your bankroll on decisions with meaningful strategic impact.
Common Insurance Mistakes
Taking insurance “just in case” with a strong hand: Your hand strength doesn’t affect the probability of the dealer’s hole card. Insurance is never correct based on your own hand value.
Always taking insurance when holding a blackjack (even money): Even money costs expected value. Decline unless you’re counting and the true count confirms it.
Taking insurance because the dealer “feels” lucky: Streaks and feelings don’t change the mathematics of deck composition. The dealer has a 10 in the hole 30.87% of the time, always.
Taking insurance after a losing streak: The temptation to “protect” a bet is highest after losses. This is exactly backwards — loss aversion shouldn’t override mathematical logic.
FAQ: Insurance in Blackjack
What is the house edge on insurance in blackjack? Approximately 7.4–7.7% in a standard 6-deck game. This is among the worst bets available at any live table.
Should I ever take insurance in blackjack? Only if you’re actively counting cards and the true count is +3 or higher. For all other players in all other situations: no.
What is “even money” in blackjack? Even money is offered when you hold a blackjack and the dealer shows an Ace. It pays your blackjack at 1:1 immediately instead of waiting to see if the dealer has blackjack. It’s mathematically equivalent to insurance and costs expected value — decline it.
Does the number of decks affect insurance odds? Slightly. More decks make the 10-value probability more stable near 30.87%. In single deck, the probability varies more but remains below the break-even threshold without a favorable count.
Is insurance profitable for card counters? At true count +3 or higher (Hi-Lo system), insurance becomes a break-even or positive EV bet. This is one of the most important count-based deviations from basic strategy.
If the dealer always seems to have blackjack, should I take insurance? No. Perceived streaks are confirmation bias — you remember the blackjacks more vividly than the non-blackjacks. The statistical frequency of dealer blackjack when showing an Ace is approximately 31%, regardless of recent history.
Does insurance protect my original bet? Not meaningfully. If you take insurance and the dealer has blackjack, you break even (insurance pays 2:1, you lose your original bet). If the dealer doesn’t have blackjack (69% of the time), you lose the insurance bet and continue. Over time, you lose more on insurance than you gain from the “protection.”
Can I take insurance for less than the maximum? Yes. The insurance bet can be any amount up to half your original wager. Some players take less than maximum “just in case” — this is still a negative EV bet, just a smaller one.
Summary: The Insurance Rule
One sentence: Never take insurance unless you are counting cards and the true count is +3 or higher.
For the vast majority of live blackjack players, insurance is money given to the casino at a rate 30 times worse than optimal play. The framing as “protection” is marketing, not strategy.
For the full strategic picture including when side bets are and aren’t appropriate, see the complete live blackjack strategy guide. For surrender — another protective option, but one that actually makes mathematical sense in specific situations — see our blackjack surrender guide.
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