By Sadie Smith.
The game of blackjack at online casinos today would be recognizable to a player from 100 years ago. But only at the most basic level. Online casinos have played with the formula of this classic base game, sometimes making it slightly worse for unknowing players and other times adding side bets that change the dynamic of the house edge and payouts considerably.
Blackjack can, under optimal rules and play, have the lowest house edge of any casino game. So in the modern era of online gameplay, even the most long-term and confident player can benefit from understanding how games, Infinite or Free Bet blackjack, change the equations.
Know Your Basic Payouts – 3:2 is The Standard
If you’re looking for the highest payout from a blackjack game, you want an option with the standard 3:2 payout for a blackjack win. Simple. There really is no other way to put this – 6:5 blackjack games are just worse for players.
It doesn’t matter about side bets. Mathematically, they’re all worse than the main bet. There are reasons to play side bets – more on that later – but for the most part, only the main bet is important if you’re looking to make the best play.
A comparative review platform like Casino.org is often used by players to help them find casinos that fit what they want from payouts – including blackjack. From analyzing what games and tables are available at each operator, to assessing bonuses, payment options and speeds. For an example, a $10 bet winning at 3:2 blackjack pays $15. At 6:5, only $12. Over a long session that can make a big difference.
You Need to Understand House Edge
That leads neatly into house edge – the long-term advantage the casino has in a game. In blackjack, with the right game (not 6:5) and perfect play, players can get this as low as less than 1%.
Learning perfect blackjack play is actually not that hard. Far easier than in a card game like poker, where there is arguably no perfect play at all. With perfect blackjack strategy, you only need a little bit of luck to go your way to have a winning session. Of course, in the long term, it’s still against you, slightly, but that’s how casinos make money.
Other aspects that influence the house edge of a game include rules like:
- dealer hits or stands on soft 17 (you want stands)
- double after split
- The option to re-split aces
There are very few jurisdictions worldwide where online casinos are restricted to what kind of blackjack is offered. For example, in Las Vegas, it was, for a long time, getting harder and harder to find 3:2 blackjack tables. But they are on a return swing now.
How New Live Casino Blackjack Formats are Changing Things Up
That’s the overview of the basics. But in 2026, online blackjack developers are consistently changing things up when it comes to the classic game of 21.
- Infinite Blackjack
- Speed Blackjack
- Power Blackjack
- Free Bet Blackjack
These are just some of the variants that have been put out in recent years by developers like Evolution, Pragmatic Play and Playtech.
These games add more to the blackjack experience, but often add choices that increase the house edge. For one thing, these games often have hundreds of people playing at once, which increases speed and pressures players into making moves that might not fit perfect play. On the other hand they can also work well for players, with things like free doubles and splits. But then, for example, they also add rules like Push on 22 – which evens the edge back out again.
Watch out for Side Bets and Pay Attention as the Games Speed Up
For another thing these games often add side bets into the equation. Common options you’ll find at live casino blackjack tables today include:
- Perfect Pairs
- 21+3
- 777 or Blazing 7s
- Hot 3s
- Insurance
Insurance is a poor bet. You should almost never take it. It adds to the house edge and the likelihood of you losing in the long run.
All side bets similarly increase the house edge. However, they pay out far more significant sums on the rare chance they do win. This makes them perfect for a certain type of blackjack player – one more concerned with fun and potential unlikely wins than consistent mathematical play.
For example, 777 side bets can pay out as much as 100 to 1 at some casinos. But you’re very unlikely to see one come up. Even perfect pairs pays out 25 to 1 in most modern online blackjack games.
Most side bets sit at around 96% RTP, which is significantly lower than the 99% RTP of a favorable, standard blackjack game played to a perfect standard.
Because they are, in the long run, less favorable to players who don’t hit the lucky win, they are often heavily promoted by casinos. There are many live blackjack tables specifically themed around offering a wide variety of side bets. So consider what kind of game you’re playing before you choose.
IMAGE CREDIT: Casino.org