math

Stop-loss

A pre-set balance floor that ends a session before further losses accumulate — the discipline lever that keeps a bad session from becoming a broken bankroll.

Also known as: session stop-lossloss limitstop-loss rule

A pre-committed balance level that ends a session the moment it is touched, regardless of what “one more spin” seems to promise. Unlike a wagering-requirement or a max-bet cap, a stop-loss is self-imposed: the operator does not enforce it, and there is no button that grays out when you cross it. Its entire value is that you decide the number before the session, when your judgment is intact.

Three sizing conventions actually work in practice:

Fraction of session bankroll — set the stop-loss at 40–60% of what you sat down with. On a €200 session, walk at €80–€120 remaining. This is the default we recommend in the bankroll management guide because it survives normal high-volatility variance without triggering on the first cold streak.
Absolute drawdown — a fixed number of units, typically 100× base bet. A €0.40 spinner sets a €40 stop-loss floor. Works better than a percentage when session bankrolls vary heavily.
Time-boxed — end the session at a clock time regardless of balance. Not strictly a stop-loss, but it caps risk-of-ruin by capping exposure.

Pair the stop-loss with a stop-win (target-cashout level) to lock in wins the same way. Without both edges, the session drifts back toward the house edge no matter how well it started.

Operational levers that make a stop-loss stick:

Autoplay balance floor — most compliant clients let you set “stop if balance drops below Y”. This enforces the rule mechanically for the length of the auto-run.
Separate wallet — deposit only the session bankroll, not the total. When it hits the floor, there is nothing left to keep spinning with.
Written rule — the session stop-loss is decided before the deposit hits and written next to the device. Post-hoc renegotiation (“I’ll go one more €50 in”) is the failure mode this term exists to name.

Stop-loss discipline is the practical answer to loss-chasing: it converts an abstract risk-management principle into a single number that either holds or does not. Bonus play makes it more important, not less — wagering requirements can push sessions well past the point where a fresh deposit would have made sense.