Build a rule card
Record the number of decks, blackjack payout, dealer behaviour on soft 17, doubling restrictions, split rules and whether surrender exists. Keep side bets separate from the main hand.
Do not assign a universal RTP
Theoretical performance depends on the rules and the decisions made. A figure calculated for one rule set and strategy should not be advertised for every table carrying the same name.
Bonus contribution
A casino may count table-game stakes differently from slot stakes, or exclude them. The game’s payout rules and the bonus contribution rules are separate documents. Check both before modelling wagering.
Build a rules checklist for the table
Record the number of decks, whether the dealer hits or stands on soft 17, the permitted double-down situations and the rules for splitting and surrender. The same blackjack label can cover different choices, so one generic return figure is insufficient for every table.
For example, a winning natural blackjack on an ordinary stake of 10 has a profit of 15 under a 3:2 payout, compared with 12 under 6:5. That compares only this payout event; it is not a complete house-edge calculation. The table’s exact rules and the player’s decisions affect the broader comparison.