The moment a blackjack table offers you a second bet
You sit down, place your main wager, and the dealer points to a small printed circle or box on the felt with a name like Flush Plus. The pitch is simple: a small extra stake that pays based on the first two cards you receive and the dealer's upcard. The bet settles before the hand plays out, so you win or lose it independently of whether your blackjack hand beats the dealer. That independence is the first thing to understand, because it means Flush Plus is not an improved version of your main bet. It is a separate wager with its own probabilities, its own paytable, and its own house edge.
Flush Plus belongs to a family of blackjack side bets built around card combinations. Some side bets pay for pairs, some for suited cards, some for a specific total. Flush Plus is the flush-flavoured member: the value of your hand comes from having cards of the same suit, with the dealer's upcard able to complete or strengthen the flush. The exact payouts differ from one table to the next, which is why the only reliable way to evaluate a specific game is to read the paytable printed on that table's layout or shown on the screen. What follows is the structure that stays the same across versions.
What the bet looks at
Flush Plus uses three cards: your first two cards and the dealer's upcard. The bet is resolved at the moment those three cards are known, before anyone hits, stands, splits or doubles. If the three cards form a qualifying flush, the side bet pays. If they do not, the side bet is collected, regardless of what happens to the main hand afterwards.
Because the side bet settles on the initial deal, a player who later busts can still win the Flush Plus wager, and a player who later draws to 21 can still lose it. The two bets share a table and a shoe but not a fate. That separation is what makes side bets attractive to some players and expensive to others: they create more frequent decisions and more frequent settlements, but each settlement carries the mathematical edge built into the side bet's own paytable.
The key mechanical detail is that the dealer's upcard counts toward your flush. In a standard poker-style flush, you need five cards of one suit. Here, three cards can qualify, and one of them is not even yours. That changes the frequency of winning combinations substantially compared with a bet that looked only at your own two cards. A three-card flush is far more common than a five-card flush, which is why the payouts are correspondingly smaller.
Qualifying hands and how payouts are tiered
Flush Plus paytables are usually tiered, meaning different three-card combinations pay different multiples of your side stake. The base qualifying hand is typically any three cards of the same suit. From there, the paytable may add higher tiers for stronger combinations: a three-card straight flush, a suited three-of-a-kind, or a specific premium hand. Each tier pays a fixed multiple of the side bet, printed on the layout.
The table below shows how the tiers tend to be structured, using placeholder multiples because the actual numbers are set per table and per operator. Read the column on the right as the kind of information you will find printed at your own table, not as a universal payout schedule.
| Hand tier | What it means | Where the payout is stated |
|---|---|---|
| Base flush | Your two cards and the dealer's upcard share one suit | Printed as the lowest tier on the table's side-bet paytable |
| Straight flush | Three suited cards in sequence | Printed as a higher tier on the same paytable |
| Premium combinations | Hands such as suited three-of-a-kind, where offered | Printed as the top tier, if the table version includes one |
| Non-qualifying hand | Any three cards not meeting a printed tier | Side bet is collected |
The number of tiers and the multiple attached to each tier are the two variables that most affect the bet's house edge. A table with a generous top tier but a stingy base tier can carry a different edge from a table with a flat payout for all flushes, even though both are labelled Flush Plus. This is why two players describing the same side bet can report different payouts without either being wrong: they were playing different paytables.
Where the house edge comes from
Every side bet, Flush Plus included, is a negative-expectation wager. The operator prices the bet by setting the payout multiples below what the true frequency of each hand would require for the bet to break even. The gap between the true odds of a qualifying hand and the payout offered is the house edge, expressed as a percentage of each side stake.
House edge and Return to Player (RTP) are complements: they sum to 100% for the same bet under the same rule set. If a given Flush Plus paytable carries a house edge that is only a small fraction of coin-in, the corresponding RTP is the remainder returned to players. Those figures are not published here because they are not universal; they are set by the paytable in front of you. What is universal is the direction: the edge is built into the payout multiples, and no decision you make after placing the side bet changes it.
A useful way to see the pricing is to think about how often a three-card flush appears. With three cards drawn from a shoe, same-suit combinations are common enough that the base tier must pay modestly, or the bet would cost the operator money. The higher tiers are rarer, so they can pay more without changing the overall arithmetic much. The operator's margin lives in the difference between how often each tier really occurs and what the paytable pays for it.
How Flush Plus compares with the main blackjack bet
The main blackjack bet and the Flush Plus side bet are priced differently and played differently. The table below lays out the structural differences that matter when you decide whether to put money on the side circle.
| Feature | Main blackjack bet | Flush Plus side bet |
|---|---|---|
| What it depends on | The full hand against the dealer's hand | Only the first two player cards and the dealer's upcard |
| When it settles | After all hitting, standing, splitting and doubling | Immediately after the initial deal |
| Player decisions involved | Hit, stand, double, split, surrender where offered | None after the stake is placed |
| House edge source | The rules of the specific table | The specific side-bet paytable |
| Typical edge level | Generally lower than most side bets under common rules | Generally higher than the main bet on the same table |
The last row is the one that matters most. Side bets exist because they carry a higher house edge than the main game. That does not make them forbidden or foolish; it makes them a faster way to lose the side stake on average. A player who enjoys the extra decision point and understands the pricing can still choose to play it. The honest framing is that the side bet is a separate, more expensive wager bolted onto a game whose main bet is already priced in the operator's favour.
Reading the paytable before you place the bet
Because Flush Plus paytables vary, the correct first move is to read the printed layout or the on-screen information panel before putting any money on the side circle. Three pieces of information matter. First, the minimum and maximum side stake, which are usually printed next to the bet circle. Second, the tier list, which tells you which three-card combinations pay and which do not. Third, the payout multiple attached to each tier, usually written as a ratio such as a number followed by "to 1".
If any of those three pieces of information is missing or unclear, ask the dealer. A dealer can point to the paytable and explain the tiers without giving advice. The information is public, printed on the table, and asking about it is normal. What the dealer cannot tell you is whether the bet is worth taking, because that is a personal decision about how much you are willing to pay for the extra action.
One structural point worth knowing: the side bet is usually optional, and it does not affect the main hand. You can play the main bet without the side bet, and the side bet does not change the rules of the main game. The two bets share a shoe but not a strategy. Basic strategy for the main hand is computed from the main game's rule set, and the presence of a Flush Plus circle does not alter it.
What the side bet does not do
Flush Plus does not improve your main blackjack hand, does not change the dealer's behaviour, and does not reduce the house edge on the main bet. It is a parallel wager with its own arithmetic. A common misreading is that the side bet somehow "protects" the main bet or gives you a second chance when the main hand loses. It does neither. A losing main hand and a winning side bet are two separate outcomes that happened to occur on the same deal.
Another misreading is that a higher tier on the paytable makes the whole bet better. A top tier that pays a large multiple is rare, and its rarity is exactly what allows the operator to print that large number. The overall price of the bet is set by the full distribution of outcomes, not by the most exciting line on the paytable. A paytable with a flashy top tier can still carry a worse edge than a plainer paytable with a stronger base tier.
The only way to compare two Flush Plus paytables is to see both printed schedules side by side and understand that the edge comes from the whole schedule. Without a published edge figure for the specific table, the printed tiers and multiples are the raw material, and the arithmetic is not something most players can compute at the table. The practical approach is to treat the side bet as a priced extra, not as a hidden opportunity.
FAQ
Does Flush Plus use the dealer's upcard?
Yes. The bet is evaluated on three cards: your first two cards and the dealer's upcard. If those three cards form a qualifying flush or a higher printed tier, the side bet pays according to the table's paytable. The dealer's upcard is part of the combination, which makes qualifying flushes more frequent than they would be with only your own two cards.
Can I win Flush Plus even if I bust my main hand?
Yes. The side bet settles immediately after the initial deal, before any hitting, standing, doubling or splitting. A player who later busts the main hand can still collect a winning Flush Plus payout, and a player who later makes a strong main hand can still lose the side bet if the three initial cards did not qualify.
Is the Flush Plus paytable the same at every blackjack table?
No. The name Flush Plus describes a type of side bet, not a single fixed payout schedule. Different operators and different tables can print different tiers and different payout multiples. The only reliable way to know what a specific table pays is to read the side-bet paytable printed on that table's layout or shown on its screen before you place the bet.
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This article is general information about how these mechanics work. It is not legal advice and not a recommendation to gamble or to use any particular operator. Availability and legality differ by jurisdiction — check the rules that apply where you are.