Splitting aces in blackjack: always split, but know the limits

• A pair of aces played as one hand is only a soft 12; split, each ace starts a hand worth 11.
• The one-card rule limits the value of splitting, but splitting is still far better.
• A split ace that catches a ten is 21 but pays even money and can lose nothing but tie the dealer 21.
• Resplitting aces, when offered, adds a little value to the game.

Each split ace gets one card. You cannot hit or double after.

An ace is the strongest card in blackjack. If players could hit and double freely after splitting aces, the house edge would fall noticeably.

So most games give one card per ace and stop. A few allow resplitting if another ace lands.

1. 1

   Step 01

   Place a matching bet

   Next to your first bet.

2. 2

   Step 02

   Signal the split

   Two fingers in a V, or say "split".

3. 3

   Step 03

   Receive one card per ace

   The dealer moves on after each.

4. 4

   Step 04

   Wait for the dealer

   No more choices on these hands.

A natural must be the first two cards of a hand. Once you split, the hands are new, so an ace and ten is just 21.

It still beats every dealer total except 21, which pushes.

Even against a dealer ace, splitting is right. In games with the dealer peeking for blackjack, you lose only your original bet if the dealer has it.

In no-peek games, you can lose both bets, but splitting is still the better play.

A split ace catches a 10-value card about 31% of the time, making 21. Many other draws land on 17 to 20, which are strong hands too.

Even against a dealer 10, each split ace hand is worth more than a soft 12 played once. That is why the chart never varies.

Not splitting aces

Playing A-A as soft 12 throws away two chances at strong hands.

Expecting 3 to 2 on split 21

A split 21 pays even money. It is not a natural.

Asking for a third card

At most tables you cannot hit split aces. The dealer will stop after one card each.

Fearing a dealer ace

Splitting is still best against an ace in standard games.

Counters value aces highly because they make blackjacks and strong split hands. When many aces remain, bets go up.

Basic strategy players do not need to track aces; just always split them.

• When to split in blackjack →Every pair decision.
• Blackjack hard 16 →Another key decision.
• Blackjack rules variations →How rules move the edge.
• Basic strategy chart →The full chart.

Tap a resort — each row opens that casino’s White Gambling page (hours, game mix, floor facts). Venues with this game in official counts, sorted high to low.

Browse all Las Vegas casinos →

A 90-second guide cannot cover every table moment. Tap a group, then a question — answers are short paragraphs, not one-liners.

1. Wizard of Odds — Blackjack rules Not from a registry (Reference source, not an official registry)?The gaming industry’s standard reference for casino-game math, by actuary Michael Shackleford. Not an official registry; our calculators compute these numbers independently. · accessed Oct 14, 2026Rules, odds and house edge
2. Wizard of Odds — Blackjack Not from a registry (Reference source, not an official registry)?The gaming industry’s standard reference for casino-game math, by actuary Michael Shackleford. Not an official registry; our calculators compute these numbers independently. · accessed Oct 14, 2026Rules, odds and house edge
3. Nevada Gaming Control Board · accessed Oct 14, 2026Approved games and gaming revenue reports
4. National Council on Problem Gambling — Help and resources Not from a registry (Reference source, not an official registry) · accessed Oct 14, 2026Free, confidential help: call or text 1-800-GAMBLER