WAC 230-15-140
WAC 230-15-140. Wagering limits for house-banked card games
(1) A single wager must not exceed $400.
(2) A player may make a single wager for each decision before the dealer deals or reveals additional cards. Wagers must be placed on the table layout on an approved betting spot, except for:
(a) In Blackjack games, players may place an additional wager next to their original wager when doubling down or splitting pairs; or
(b) Tip wagers made on behalf of a dealer; or
(c) As authorized in approved card games rules.