Gambling terms, explained straight

Advantage Play & Game Integrity

True count cards

True count cards is the running count in blackjack card counting, divided by the number of decks remaining, to measure how rich the shoe is in high cards.

Formula
Running count ÷ decks remaining12
Variant formula
TC = INT(RC / ND), where RC is running count and ND is unseen decks4
Theorem
For any balanced count, expected true count after card removal equals the true count before removal56

Key points

  • The true count normalises the running count for shoe size, allowing consistent betting and play decisions across different numbers of decks.23
  • A higher true count indicates a deck richer in high cards, which increases the player's edge and signals larger bets.23
  • The true count applies to blackjack card counting and, in a separate context, to the Panda 8 bet in baccarat.4

Not the same as

Advantage play Card counting The broader method of tracking cards to gain an advantage; true count is the normalised output of that method. Advantage play Blackjack card counting The specific application of card counting to blackjack, where the true count is used to adjust bets and strategy. Advantage play Hi-lo card counting A popular card-counting system that assigns values +1, 0, -1 to cards and uses the true count for betting decisions. Advantage play Card counting machine A device that automates the running count and true count calculation, often used covertly. Advantage play Hole card meaning The dealer's face-down card in blackjack, which is not part of the true count calculation. Advantage play Courtsiding Courtsiding is placing bets on a live sporting event using information gathered at the venue

Sources

  1. Card counting en.wikipedia.org Defines true count as running count divided by decks remaining and explains its use in blackjack card counting.
  2. Introduction to the High-Low Card Counting Strategy wizardofodds.com Provides the formula and explanation of how true count is used in the High-Low system.
  3. Card Counting in Blackjack - Introduction & Basics wizardofodds.com Covers the basics of card counting and the role of true count in betting decisions.
  4. Card Counting the Panda 8 Bet wizardofodds.com Describes the true count calculation for the Panda 8 bet in baccarat.
  5. arXiv:math/0006017v1 [math.PR] 2 Jun 2000 arxiv.org Provides the theorem that expected true count remains unchanged after card removal.
  6. [PDF] arXiv:math/0006017v1 [math.PR] 2 Jun 2000 arxiv.org Supports the same theorem from the same paper.

Sources are drawn from regulators, universities and published research, and each one is labelled with what it actually is — a preprint is not called a paper. Bookmaker and affiliate pages are never cited here, because a page that sells betting is not a neutral authority on it.

Written and maintained by Ellis Warrender, writer and maintainer.

Last updated 28 July 2026. Spotted an error? Tell me and it gets fixed and logged on the corrections page.