Flawless Poker
THE NUMBERS BEHIND THE GAME · INTERMEDIATE

What Is Average Buy-In in Poker?

Total tournament entry investment divided by the selected count of entries or tournaments, as explicitly defined.

Common abbreviation: ABI

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What it means

Re-entries and fees can change the denominator and numerator.

AT THE TABLE

A practical example

A player spends 30 across three entries for a 10 average cost per entry.

The calculation

Average cost per entry = total tournament investment ÷ number of entries.

The example above shows the idea with stated assumptions. Actual decisions also depend on ranges, future action, and the game format.

Where you will hear it

Texas Hold’em, Omaha where applicable. The exact usage can vary with rules and context.

Also called: ABI

Related concepts

Return on InvestmentTournament profit divided by tournament cost over a defined sample.Explore ↗In-the-Money PercentageThe share of tournaments that produced an in-the-money finish.Explore ↗In the MoneyFinishing in a position that receives a prize.Explore ↗Multi-Table TournamentA tournament that begins with players spread across multiple tables.Explore ↗Win RateA result measured per unit of play, such as big blinds per 100 hands or money per hour.Explore ↗

Keep learning

Study this idea in a wider poker context, then return to the dictionary whenever a term needs a closer look.

Explore Mathematics Nebula in Poker Galaxy ↗Read The Flawless Poker Odds Bible (PDF) ↗

Published 2026-10-15 · Updated 2026-10-15 · Flawless Poker Cosmic Codex