Blackjack Surrender

Late surrender comes after the peek. A dealer showing a 10 or an ace first checks the face-down card, and a blackjack there settles the round at once, taking the full original bet. Only when the check comes back clean may a player give up half. This is the version found on most tables that offer surrender at all.

Early surrender comes before the peek. The player may give up half the bet even when the dealer turns out to hold blackjack, so the option rescues half a stake from hands that were already lost. That single difference in timing makes it far more valuable, and it is why the rule is so rarely offered.

No-hole-card surrender belongs to tables where the dealer draws a second card once every player has finished, the European style of deal. A player may surrender, but if the dealer then completes a blackjack, the full bet is lost anyway. In value it sits close to late surrender, with a different set of hands, because a hidden blackjack still threatens every decision. The deal itself is covered on the European blackjack page.

Six decks, dealer peeks. Every figure is an expected result per 100 units bet, counted once the peek has found no blackjack, and surrender always returns −50.0 on that scale. The gain is how far surrender beats the best play that keeps the hand. With S17, 4 hands are surrendered; with H17 the list grows to 7.

Surrender has a fixed price: half the bet, every time. It is therefore correct only where playing on loses more than half a bet on average, and that happens in a narrow band, a stiff total of 15 or 16 facing a 9, 10 or ace. Against a 10, a hit on 16 averages −53.5 per 100 units bet, a few units worse than surrendering. A hit on 15 against the same card averages −50.3, so the advantage there is a fraction of a unit, right but barely.

A dealer who hits soft 17 finishes stronger behind an ace, which pushes three more hands over the line: 15 and a standing 17 against the ace, and even a pair of eights, whose split there trails the half bet by 1.5 units. Against a 10 the eights are still split under either rule, because two hands that start from 8 average −47.5, ahead of surrender's −50.0.

The rule: Give up a hand only when playing it would lose more than half the stake on average. That narrow test is why the late surrender list holds just four hands on a standard table.

A six-deck S17 shoe, 19 surrender cells in all. Here every round counts, dealer blackjacks included: surrender returns exactly −50.0 per 100 units bet, because the half stake comes back even when the dealer holds blackjack, while the best play that keeps the hand loses the whole bet each time one turns up. The gain is the gap between those two results.

An ace hides a blackjack far more often than a 10 does, and under early surrender that risk is still in play when the decision is made. Kept and played, hard 16 facing an ace returns −66.5 for each 100 units staked once those blackjacks count as full losses, against a flat −50.0 for giving it up. Surrender therefore beats almost any weak hand against an ace: hard 16 gains 16.5 units per 100 bet, hard 15 gains 14.2, and even a standing 17 gains 13.7. Small totals such as 5, 6 and 7, which a late surrender player would never abandon, join the list for the same reason.

Against a 10 the blackjack threat is smaller, and the list stays close to the late one, adding 14 and the pairs of sevens and eights. A pair of eights shows the shift clearly: late surrender keeps splitting it against a 10, while early surrender gives it up and comes out 1.6 units ahead of the split.

The same six-deck S17 shoe, where a later dealer blackjack takes every bet, a surrendered hand included. With no peek, the figures count every round, blackjacks too, which is why surrender against a 10 or an ace costs more than half a bet. Pairs of eights join the list because splitting them is no longer the alternative: without a hole card the extra stake of a split is exposed to the hidden blackjack, so the eights would be hit.

Worth is what the surrendered hands save across the whole game, each hand's gain weighted by how often it is dealt, in percentage points of the initial bet. Every other rule is the standard six-deck game's.

Following the late surrender chart, a player gives up 4.48% of rounds, about one in 22. Each of those saves only a few units per 100 bet, and the most valuable single cell, 16 against a 10, saves 3.5. Rare use times a small gain is why the whole rule takes only 0.07 points off the standard house edge, and why the same rule is worth 0.08 points in the eight-deck shoe that Atlantic City blackjack deals from. An eight-deck S17 game with late surrender, every other rule standard, runs at 0.36% with basic strategy.

A player who ignores the button forfeits that saving in full. Never surrendering on a late surrender table leaves the edge at 0.41%, the price of the same game without the rule, a habit cost of 0.07 points. Every other habit and play mistake is ranked on the blackjack tips page.

Figures assume the six-deck game with late surrender unless a rule is named.

Two tables here put the option in the name: Blackjack Surrender from Platipus and Surrender Multihand Blackjack from BGaming. Before relying on the lists above, open the rules screen and find out when the option is offered, before or after the dealer checks for blackjack, and whether the dealer hits soft 17, which the soft 17 page explains.