Calculate the expectation
Multiply total stakes by the edge as a decimal. For a fictional $750 of turnover and a 3% edge, the expected loss is $22.50. Use turnover rather than the opening balance: the same funds can be staked repeatedly.
Keep the assumptions visible
The edge must apply to the game's actual rules and choices. A generic blackjack percentage, for example, cannot be assumed to apply to every table and decision. If the underlying figure is uncertain, show the uncertainty rather than giving a precise-looking result.
Do not turn the model into a target
Actual loss can be smaller, larger or the full available balance. A calculator cannot tell someone that an amount is safe to risk. It is an explanation of averages under stated assumptions, not a betting system or profit forecast.
Expected-loss calculator
Use total stakes, including replayed funds. Actual losses can be the full amount available.
Quick checklist
- Total turnover
- Applicable edge
- Rules and assumptions
- Actual results can differ
Sources & scope
Primary documents are linked below. Operator statements and independently checked records are different kinds of evidence.
Source review: 5 November 2026. Links can change. No transaction or customer-support test is implied.
About this explanation
Numerical examples are hypothetical unless a source is expressly identified. This page does not recommend an operator or promise an outcome. The UK regulator references explain technical terms; they are not Australian legal guidance.
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