Deck penetration: how deep the dealer goes

• Penetration does not change the basic house edge.
• It changes how often high counts appear.
• Continuous shufflers remove it entirely.
• Deep cuts are rarer than they used to be.

A typical shoe game.

In a six-deck shoe of 312 cards, a dealer who places the cut card one and a half decks from the end deals 234 cards, or 75% penetration. A cut two decks from the end gives about 67%.

Hand-dealt single and double deck games, called pitch games, work the same way. The dealer shuffles after a set number of rounds or when a cut card appears. Penetration there often runs from 50% to 65%.

Casinos choose penetration to balance speed and protection. Shuffling takes time, so deeper cuts mean more hands per hour. Shallow cuts protect against card counters but slow the game.

Penetration does not change the basic house edge for a player using basic strategy. It changes how far the count can drift. Late in a deep shoe, a few decks may hold far more tens and aces than normal, which is where counters gain.

With a shallow cut, those rich spots often sit behind the cut card and never get played. Many counting writers rate penetration as one of the most important game conditions, alongside the rules and the bet spread allowed.

The true count depends on decks left. At 83% penetration a counter sees spots with one deck left, where a running count of +5 is a true count of +5. At 60% the same running count is closer to +2.

1. 1

   Step 01

   Watch a shuffle

   Note the cut card.

2. 2

   Step 02

   Estimate decks behind it

   In half decks.

3. 3

   Step 03

   Divide

   Decks dealt ÷ total.

4. 4

   Step 04

   Check the rules

   3 to 2, surrender, soft 17.

5. 5

   Step 05

   Avoid shufflers

   No count is possible.

A continuous shuffling machine takes discards back after every round, so the count never builds. For counters, penetration is effectively zero. For other players, the main effect is more hands per hour, which raises the expected loss per hour.

Automatic batch shufflers are different. They shuffle one shoe while another is dealt, and the cut card still sets penetration on the shoe in play. They do not stop counting.

Casino staff may also cut a shoe shallower for a player they suspect of counting. That is legal, as is refusing to deal to a player. Counting with your own memory remains legal in the US.

Ignoring the cut card

It sets the depth.

Counting shuffler games

There is nothing to count.

Trusting old reports

Policies change.

Overlooking rules

Bad payouts beat good depth.

• Card counting →How counting works.
• True count →Dividing by decks left.
• Continuous shufflers →How they work.
• Shoe vs pitch game →Hand-held or shoe.

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. Wikipedia — Card counting Not from a registry (Reference source, not an official registry) · accessed Oct 15, 2026Running count, true count and penetration
2. Wizard of Odds — High-Low count 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 15, 2026Hi-Lo values and index plays
3. UNLV Center for Gaming Research Not from a registry (Reference source, not an official registry) · accessed Oct 15, 2026Research library on casino games and gambling
4. National Council on Problem Gambling — Help and resources Not from a registry (Reference source, not an official registry) · accessed Oct 15, 2026Free, confidential help: call or text 1-800-GAMBLER