Part I: Games & Gaming · Slot Machines & Electronic Gaming

Actual Hold

Slot Operations

The realized hold percentage over a specific period of time, calculated as: Actual Win divided by Coin-In. Actual hold fluctuates around the theoretical hold due to random variance, with the magnitude of expected fluctuation inversely proportional to the volume of play. For a machine with low play volume, actual hold may deviate dramatically from theoretical hold; for high-volume machines, deviations should be smaller. Slot analysts compare actual hold to theoretical hold using statistical methods (often the chi-square test or Z-score analysis) to determine whether a machine is performing within expected parameters.

In practice

An actual hold significantly below theoretical may indicate a loose machine, malfunction, or player advantage play. An actual hold significantly above theoretical may indicate a tight configuration or may trigger player complaints.

One entry from the Casino Industry Glossary — 1,157 terms written for surveillance, compliance and operations professionals rather than for players. Definitions describe industry usage; where a term carries a regulatory meaning, verify against the instrument that governs your jurisdiction.