The full guide
Work through the numbers first
Learn why an estimated advantage, a bet spread and available money are different inputs—and why none guarantees survival.
An estimate is not a guaranteed profit
A count can inform a model of the remaining shoe under specific conditions. That model does not make the next result certain. Incorrect observations, mismatched rules and poor deck estimates can undermine the assumed advantage before bankroll calculations even begin.
Bankroll is a finite resource
Any model needs a defined amount available, the stake policy and the treatment of additional split and double wagers. Money needed for ordinary expenses should not be treated as replenishable gambling capital. A calculation that assumes unlimited replenishment answers a different question from one using a fixed amount.
A spread describes stake sizes
A minimum-to-maximum opening-bet spread says how much wagers may change. It is not a probability of success or a proof that those changes are justified. A complete model also needs when each stake is used, table limits, game rules and how often the relevant conditions occur.
Risk of ruin needs a real model
You cannot infer a reliable ruin probability from a single average edge or a few winning sessions. Outcomes, variance, changing stakes, dependencies, limits and stopping conditions matter. This page does not prescribe a bankroll multiple or offer a personalised betting schedule. The bonus calculator’s average-cost arithmetic is not a replacement for such modelling.
Keep educational comparisons bounded
Use virtual examples to see how doubles and splits affect funding. State every assumption and examine losing paths as well as average results. An apparently favourable count is not a reason to break a spending limit or continue when observations are unreliable.
Try this next
- Verify the count and rule assumptions.
- Define a finite amount and spending limit.
- Include splits, doubles and table limits.
- Treat average return and survival as separate questions.
Common questions
Does doubling the bankroll guarantee survival?
No. It changes a model’s resources, not the certainty of future outcomes.
Can I use the bonus calculator as a risk-of-ruin tool?
No. It illustrates wagering and conditional cashout arithmetic using stated inputs; it does not simulate all bankroll paths.
Keep learning
References and scope. Rules and strategy depend on the game. Worked examples on this page illustrate their stated assumptions; they are not forecasts or claims of casino testing.
Can you explain the difference between a running count and a true count?