To tip a Blackjack dealer, you can give cash or chips directly to the dealer during or after your game, typically around 1-5% of your winnings or a flat amount like $1 to $5. If you're using chips, place them on the edge of the table or in a separate pile designated for the dealer. Some players also choose to place a bet for the dealer, which is treated like a regular hand. Tipping can be done at any time, but it’s common to do so after a good session or a win. While tipping is not mandatory, it's a thoughtful way to show appreciation for the dealer's service.