Online blackjack for US players

How online blackjack works

In online blackjack you play one hand (or a few) against the dealer. Both sides start with two cards, you see one of the dealer's cards, and you try to finish closer to 21 than the dealer without going over. Number cards count face value, jacks, queens and kings count 10, and an ace counts 1 or 11.

An ace that can still count as 11 makes a soft hand, such as ace-6 (soft 17). A hand with no flexible ace is a hard hand. This matters for strategy and for the dealer's rules, because some tables make the dealer hit soft 17 and others make the dealer stand.

The software version sold by RealTime Gaming is simply called Blackjack. SlotCatalog lists a July 10, 2017 release, a bet range of 13 to 3,100 and a top win of 9,300, without naming the currency or unit. No RTP for it appears in the sources available to us, so its exact rule set (deck count, soft 17, doubling and splitting limits) should be read in the game's own help screen before you play for real money.

For the full step-by-step on a first session, our how to play blackjack guide walks through the table layout. This page focuses on the money: what each decision and rule is worth.

Your options at an online blackjack table

Every round gives you a small menu of decisions. Each one changes how much money is on the table and how the hand plays out.

Whether a particular RTG table allows surrender or doubling after a split isn't listed in our sources, so check the rules panel.

Blackjack payouts: 3:2 vs 6:5 in real money

A natural blackjack (an ace plus a 10-value card as your first two cards) traditionally pays 3:2. Some tables pay 6:5 instead. The difference sounds tiny but adds up quickly.

How often do you get a natural? Using a simple infinite-deck approximation, the chance of an ace is 1/13 and a 10-value card is 4/13. There are two orders (ace first or ten first), so 2 × 1/13 × 4/13 = 8/169, or about 4.7% of hands. Over 200 hands at $10, that is roughly 9.5 naturals, and a 6:5 table would pay about 9.5 × $3 = $28.50 less than a 3:2 table for the same play.

House edge in online blackjack: what it costs per session

The house edge is the share of each dollar wagered that the casino expects to keep over the long run. The formula for any game is the same: expected loss = total amount wagered × house edge. Our house edge explainer covers the idea in more depth.

RTG doesn't publish an RTP for its plain Blackjack table in any source we could use, so we can't give you its edge. What we can show is how much the edge matters. RTG blackjack variants with published figures give a sense of the range: GamesHub and SlotCatalog list Suit 'Em Up Blackjack at up to 99.51% RTP (an edge of 0.49%), and GamesHub lists Blackjack + Perfect Pairs at 95.9% to 99.59%.

The edges in that table are examples for the arithmetic, not claims about any specific game. The point: mistakes in strategy, a 6:5 payout or regular insurance bets can easily double or triple your expected cost, and short sessions can swing far above or below these averages.

Why blackjack insurance loses money

When the dealer shows an ace, the game offers insurance: a side bet of up to half your stake that pays 2:1 if the dealer has blackjack. It sounds protective, but the math works against you.

With the infinite-deck approximation, 4 of every 13 cards are worth 10. So the dealer completes a blackjack about 4/13 of the time and misses 9/13 of the time. On a $5 insurance bet you win $10 with probability 4/13 and lose $5 with probability 9/13: (4/13 × $10) − (9/13 × $5) = $40/13 − $45/13 = −$5/13, or about −$0.38. That is a loss of roughly 7.7% of every insurance dollar, far worse than the main game.

"Even money" on your own blackjack against a dealer ace is the same insurance bet in a different form, and the same arithmetic applies.

Basic strategy for real money blackjack online

Basic strategy is the mathematically best play for every combination of your hand and the dealer's up card. It reduces the house edge compared with guessing or copying the dealer, but it doesn't turn the game in your favor. Our full blackjack basic strategy chart covers every hand; the steps below show how to use it.

1. Open the game's help or rules panel and note the deck count, whether the dealer hits or stands on soft 17, the blackjack payout and the doubling and splitting rules.
2. Use a strategy chart built for those rules. Charts differ slightly between hit-soft-17 and stand-soft-17 games.
3. Decide pairs first (split or not), then soft hands, then hard hands.
4. Turn down insurance and even money.
5. Set your stake so a long losing run won't hurt: a bankroll of 30 to 50 bets is a common rule of thumb for budgeting, not a promise it will last.
6. Stop at your planned time or loss limit, win or lose.

Our bankroll management guide helps you size bets.

Card counting and betting systems online

Card counting works in theory only when cards are dealt from a shoe that isn't reshuffled after each round. It tracks whether the remaining cards are rich in 10s and aces. In software blackjack the random number generator effectively reshuffles every hand, so there is nothing to track. Our guide to card counting online covers the history.

Betting systems don't change the edge either. The Martingale doubles your bet after every loss to recover it with one win. Here is what a $5 starting bet looks like after a losing run:

Each win in that system only nets the original $5, while a streak of losses can run into a table maximum or your budget. The house edge applies to every dollar along the way. See is Martingale a good strategy for the full answer.

RTG blackjack variants you'll see in the lobby

RealTime Gaming, which Wikipedia says was founded in Atlanta in 1998, offers several blackjack-style games, and PokerListings reports that it adopted the SpinLogic Gaming brand for its US operations in 2022. Each variant changes the rules or adds a side bet.

• Suit 'Em Up Blackjack: adds a suited bonus side bet; GamesHub lists a dealer who hits soft 17.
• Blackjack + Perfect Pairs: adds a side bet on your first two cards forming a pair.
• Super 21, Face Up 21 and Match Play 21: rule twists on the classic game.
• Pontoon and Caribbean 21: related games with their own terms and payouts.

Which of these a given casino carries changes over time, so check its lobby. The games hub lists every table game we cover.

Online blackjack bonuses and wagering rules

Most offshore welcome bonuses are built for slots. Blackjack is often excluded from bonus play or counted at a heavier rate, because its edge is low. Our page on the best bonus for blackjack and the bonus game weighting explainer go further.

A worked example shows why. Say you take a $100 deposit with a $200 bonus and the wagering is 60x (bonus + deposit), as LCB reports for blackjack at Royal Ace. That is 60 × $300 = $18,000 of bets. At a 1% sample edge, the expected cost of clearing it is $180, more than the bonus itself. At 30x on slots the turnover would be $9,000, but slots usually carry a higher edge.

SlotoCash's own terms go further: only slots, Real-Series slots, keno and scratch cards count, and play on other games voids promotion winnings. So playing blackjack with an active SlotoCash welcome bonus can cost you the bonus winnings.

Is online blackjack legal in the USA?

Real-money online blackjack is licensed by the state only in New Jersey, Pennsylvania, Michigan, West Virginia, Delaware, Connecticut and Rhode Island. Maine passed a law for tribal online casinos in January 2026, but nothing had launched by October 2026. Elsewhere, no state licenses online casinos; our states with legal online casinos page has the detail.

The casinos that offer RTG blackjack to most Americans are offshore. No US state licenses or regulates them, so there's no state regulator to complain to and no state protection of your balance. Michigan's regulator has named several of them in cease-and-desist letters, including Planet 7 and Silver Oak in its April 9, 2025 release (opens in a new tab). State law decides what applies to you, so read our guide to offshore casino legality and your state's page before you play.

Keeping blackjack a game

Blackjack's low edge can make sessions last a long time, which means more total money wagered. Set a time limit and a loss limit before you start, and treat the cost as entertainment spending. If it stops being fun, our responsible gambling hub lists tools and help.

The National Problem Gambling Helpline, run by NCPG, is 1-800-MY-RESET (1-800-697-3738), with call, text and chat; see the NCPG helpline page (opens in a new tab).

Where to play online blackjack: offers via our links

These partners run RTG software and are listed for blackjack in our best blackjack casinos ranking, which follows a commercial order: we earn commission when you sign up. They are offshore casinos, not licensed by any US state. Check your state's law before depositing, and expect bonuses to be slot-focused, with blackjack often excluded or weighted more heavily.

• Royal Ace Casino: $2,500 Welcome Bonus + 35 Free Spins, via our link (new players, 21+ or 18+ where allowed, terms apply).
• Slot Madness Casino: $2,500 Welcome Bonus + 50 Free Spins, via our link (new players, 21+ or 18+ where allowed, terms apply).
• SlotoCash Casino: $6,000 Welcome Bonus + 60 Free Spins, via our link (new players, 21+ or 18+ where allowed, terms apply).

Royal Ace's own terms couldn't be checked, and third-party listings disagree: LCB's Royal Ace listing (opens in a new tab) reports 200% up to $4,000 with 30x (bonus + deposit) wagering on slots and parlor games, 60x on blackjack and video poker, and a max cashout of 10x the deposit, while Casino Guru reports 250% up to $2,500 plus 35 extra spins with no wagering figure shown. Treat these as third-party reports and go by the terms shown at sign-up.

Slot Madness's own terms couldn't be checked either. Third-party reviews report a 275% match with code MAD275 and a $30 minimum deposit; LCB's Slot Madness listing (opens in a new tab) gives 30x (bonus + deposit) wagering on slots and no max cashout, esports.gg names slots and keno as the eligible games, and the reported cap differs ($2,750 per LCB, unlimited per Casino Guru).

SlotoCash publishes its terms. Its bonus terms page (opens in a new tab) lists 25x (deposit + bonus) wagering, a $20 minimum deposit per bonus, a $10 maximum bet while a bonus is active and no max cashout on the welcome package. Only slots, Real-Series slots (not progressives), keno and scratch cards are eligible, and the terms say play on other games voids promotion winnings. The casino's own site advertises a different package ($7,777 + 300 spins over five deposits) from the offer via our link.

Read the full reviews of Royal Ace, Slot Madness and SlotoCash for banking, payout reports and complaints before you sign up.

21+ (18+ where allowed). Every casino game has a built-in house edge, so over time you should expect to lose what you stake. Set a budget before you play and stop when it’s gone: responsible gambling tools and free help. Gambling problem? Call or text 1-800-MY-RESET (1-800-697-3738).