Blackjack tips: what works and what's a myth

Millions of people around the world pick blackjack precisely because here the player has at least some influence on the result, rather than being entirely at the mercy of chance. But you have to look at blackjack soberly: there are no guaranteed wins, and some of the “facts” that push people toward the game turn out in practice to be myths. Gambling can’t be treated as a source of income, and minors shouldn’t even try it. Below are the objective blackjack tips you can trust, and a breakdown of the stereotypes that cost players money.

Core principles before you play

Let’s start with the most basic — some of these tips apply to other gambling games too, not just blackjack.

• Learn basic strategy. It tells you the right play for every situation so as to maximise your chances (without any guarantees). To play at an online casino you don’t have to memorise the whole chart — just keep a clear basic-strategy chart to hand. Bear in mind that the chart has to be chosen to match your specific table rules.
• Choose a table to suit your bankroll. Your session bankroll should be enough for at least 20 hands, so you can ride out a possible losing streak and not crash out too quickly. Blackjack often involves doubling (sometimes several times in a hand) — that has to be built into your maths too. The table minimum should let you split your bankroll across a decent number of hands.
• Play only at licensed casinos. A reputable licence (MGA, UKGC, Gibraltar) protects the player: your winnings can be withdrawn in full and within the agreed timeframe.

These may seem obvious, but even experienced players sometimes overlook them — and quite wrongly.

Tips for beginners

A great deal of instructional material has been written about blackjack, but not all of it is equally useful, and an inexperienced beginner can’t always tell a sound tip from a made-up one on the spot. The table below debunks common mistakes and points to how to act so you at least don’t get in your own way.

We’ll break down every mistake in the right-hand column in detail below.

Bankroll management

Gambling never guarantees a win under any circumstances, so a player should stick to strict bankroll-management rules.

1. Set the session limit in advance and never go past it. Lost it all — stop immediately, however quickly it happened and however galling it feels.
2. Match your bet to your budget so the bankroll lasts at least 20 hands — allowing for possible doubles. Betting it all is an unjustified risk: if you lose, the session ends before you’ve even had a taste of it.
3. Write off losses straight away and don’t try to win them back at any cost. Rushing to recoup on emotion usually leads only to rash moves and even bigger losses, including blowing past your planned budget.

You can use one of the betting systems (bankroll-management strategies) too, but remember: they don’t improve your chances of winning, and some are downright risky for a small bankroll.

Important: a spent session limit is a signal to stop playing, not a reason to top up and “win it back”.

The top money tip: 3:2 versus 6:5

Setting side bets¹ aside, the player’s main goal is to draw a natural blackjack: it’s the most rewarding payout. Different tables pay this at either 3:2 or 6:5, and the first is dramatically better while the second is to be avoided. Take a $100 bet as an example: at 3:2 you win $150, at 6:5 only $120. The $30 difference may seem trivial, but the player loses that amount every time they draw a natural blackjack, which is why experienced players consider choosing a 6:5 table close to the biggest blunder there is — no other perk of that same table makes up for it. On average the long-run RTP of a 6:5 table is lower than that of a table with the same rules paying 3:2 by roughly 1.5% — meaning the bankroll drains noticeably faster.

Important: a 6:5 table isn’t worth playing if there’s a 3:2 table open next to it — that wording on the felt matters more than all the other rules combined.

Myths about blackjack

The common stereotypes that give an inexperienced player a knowingly false picture deserve a breakdown of their own. Let’s dispel the popular blackjack myths that can leave you disappointed or out of pocket.

Myth: betting systems raise your chances of winning

Not true. So-called betting systems, or bankroll-management strategies (Martingale, Paroli, 1-3-2-6 and the rest), exist only to systematise how you place bets: some help you bet economically without burning through your bankroll too fast, others tell you how to raise your bet after a losing streak so you recoup at the first win². But not one of them affects blackjack’s long-run RTP. Take Martingale as an example:

• the bet doubles after every loss and resets to the base minimum after every win;
• as long as you have enough money to survive a drawn-out losing streak, a win covers all the previous losses in the streak and even turns a small profit;
• but at some point you’ll hit the ceiling and won’t be able to double again — losing a huge sum in one go cancels out many earlier small wins, since under Martingale a player never really comes out substantially ahead.

You can use betting systems, but believing they help you win is a mistake. The answer to the popular question of whether Martingale works in the sense of raising your odds is no.

Important: no betting system changes the house edge — it only redistributes your bets over time.

Myth: the dealer “has to” lose after a winning streak

There’s a stereotype that a bad run can’t last forever and that after a certain number of losses the dealer is simply bound to lose. And yes, sooner or later the dealer will lose — every streak ends. But it’s a gross error to believe the player is bound to win after exactly so many losses in a row, and worse still to bet bigger in the hope of clawing back all the losses in one swing. Cards have no memory: the result of the next hand is completely independent of the previous ones. This is especially true for a random number generator, where every hand starts with a full set of cards. Mathematically, the probability of winning a hand is 42–43% — always, with no bearing on what came before.

Myth: other players ruin your game

Some are convinced that their tablemates ruin their game, and sometimes it looks that way — for example in single- or double-deck blackjack, when the one card you need out of the shoe goes to a fellow player. But that’s nothing more than chance: this time “your” card went to someone else, next time the card your neighbour needs will go to you. Mathematically, the number of players at the table has no effect on blackjack’s long-run RTP — the probability of the right card falling at the right moment is always the same.

Myth: insurance saves you

The phrase “insurance against a dealer blackjack” sounds tempting: it turns out the dealer won’t win even with the strongest hand. But professionals answer the question of whether to take insurance with a firm no³, and over the long run using it regularly pushes the house edge to 1.97% — against roughly 0.5% for typical basic-strategy blackjack.

The reason is that insurance is a side bet worth half your main bet. You can only insure when the dealer’s first card is an ace. If you insure and the dealer really does have a natural blackjack, your main bet loses, but the 2:1 insurance payout is equivalent to getting your main bet back. The devil is in the details: the probability of a dealer blackjack with an ace is only 31%, and in 69% of cases you simply lose the insurance bet.

Common beginner mistakes

Some mistakes are typical of beginners in particular — they look like a “secret” to winning at blackjack but actually do the player a disservice. Here they are:

• taking insurance — covered above: it never brings a win under any circumstances (breaking even at best), and in 69% of cases you lose the insurance bet for nothing;
• splitting tens — you should never split them: the odds of winning with a 20 are higher than the chance of assembling even one natural blackjack after the split;
• standing on soft 18 against a strong dealer card — it’s smarter to take another: if the dealer has a 9, 10 or ace, a second card will very likely make their hand stronger than yours, and the “soft” nature of your hand means there’s no risk of busting anyway;
• copying other players — pointless: a beginner often can’t tell who’s playing well deliberately from who’s just running lucky; besides, the “right” plays don’t guarantee success anyway, just as you can win with the “wrong” ones.

Spotted your own habits in this list — time to fix them.

Blackjack tips for playing online

If you’re planning to play online specifically, stick to a few simple pointers:

• always pick a casino with an eye on its licence — ideally MGA, UKGC or Gibraltar — and always check it’s current (not expired or revoked, which is visible on the regulator’s site);
• before playing for real money, practise in demo mode — random number generator versions offer this option, just make sure the rules match exactly;
• use responsible-gambling features — if needed, ask the casino to freeze your account or even delete it if you can’t manage the symptoms of a gambling problem on your own;
• set limits using the casino’s tools — that stops you exceeding your budget even in the heat of the moment.

The other tips in this article remain just as relevant to playing online.

Important: before playing for real money, run your strategy in through the demo and make sure the table rules match the ones your chart is built for.

A quick glossary

Below are the basic terms that come up in the article. The full list is in the glossary.