Here’s the honest deal, friend: blackjack is the best-value game in the casino — a house edge as low as 0.5% (99.5% RTP) — but only if you memorize basic strategy. Walk up to the table and play on gut feel, and you hand most of that edge straight back; suddenly you’re playing a 2%+ game and wondering why you’re losing like it’s slots. The way you lower the house edge in blackjack is simple to state and the whole game: learn one chart, and follow it every hand.
And let’s kill a fantasy up front: card counting does not work on online RNG blackjack. Every hand is reshuffled from a full virtual deck, so there’s no count to track — counting is theoretically alive only on live single-shoe tables, and impractical even there. Anyone selling you an online counting system is selling a lie. What actually works online is unglamorous: the chart, the right table rules, and skipping the sucker bets. That’s the guide.
Basic Strategy — the Chart That Runs the Game
Basic strategy is the mathematically optimal decision — hit, stand, double or split — for every possible hand against every dealer upcard. It’s been solved by computers running billions of hands; there’s no opinion in it, just the play that loses least over time. You read it as a grid: your hand down the side, the dealer’s upcard across the top, and the cell where they meet tells you exactly what to do. Here are the decisions that matter most:
| Your hand | Rule of thumb |
|---|---|
| Hard 8 or less | Always hit |
| Hard 11 | Double (else hit) |
| Hard 12–16 | Stand vs dealer 2–6; hit vs 7–Ace |
| Hard 17+ | Always stand |
| Soft 13–17 (Ace+small) | Hit (double vs dealer 5–6) |
| Soft 18 | Stand vs 2/7/8; double vs 3–6; hit vs 9–Ace |
| Aces & 8s | Always split |
| 10s & 5s | Never split (stand / double) |
Memorize the full chart (it fits on a card), and practice it free in a regulated casino’s demo mode before you bet real money. This one chart is the difference between blackjack’s headline 0.5% and the 2%+ most players actually give up.
Table Rules That Help You — and the 6:5 Trap
Not all blackjack tables are equal — the rules printed on the felt move the edge before you play a hand. Look for the ones that favour you, and run from the one that doesn’t:
- 3:2 blackjack payout — non-negotiable. A natural pays 1.5× your bet.
- AVOID 6:5 tables — the single biggest edge-killer. Paying 1.2× instead of 1.5× on blackjacks adds roughly 1.4% to the house edge, gutting the whole point of the game.
- Dealer stands on soft 17 (S17) — better for you than a dealer who hits it (H17).
- Fewer decks — single- and double-deck lower the edge versus six- or eight-deck shoes.
- Double after split allowed (DAS) — a small but real edge in your favour.
The rule of thumb: a 3:2, S17, few-deck table with DAS is a good game; a 6:5 table is a tourist trap no matter how nice it looks. Online, regulated US casinos publish the rules and RTP in the game info screen — check before you sit.
Insurance and Side Bets — Skip Them
Insurance is offered when the dealer shows an Ace: a side wager that they have blackjack. It sounds prudent; it’s a sucker bet. The payout doesn’t cover the true odds, so taking insurance raises your effective house edge over time. Basic strategy’s answer is permanent: never take insurance (the same goes for “even money” on your own blackjack).
The flashy side bets — 21+3, Perfect Pairs, Lucky Ladies — are the same story dressed up: fun-looking, big-paying, and carrying house edges many times higher than the main game. They’re entertainment, not value. If you’re here for the lowest edge on the floor, the main game is the whole point; leave the side bets alone.
Card Counting: Reality vs the Movies
Card counting is legal — it’s just tracking the ratio of high to low cards to bet bigger when the deck favours you. But two hard truths. Online, RNG blackjack reshuffles a full deck every single hand, so there is nothing to count; the count resets before it can mean anything. And live-dealer online tables typically use continuous shufflers or frequent reshuffles that kill it too. Counting is theoretically alive only at a physical single-shoe table dealt deep — and casinos there will simply bar you if you’re good.
So for anyone playing online: forget counting entirely. It is dead on arrival against RNG. Your edge comes from the chart and the table rules, full stop. For where these games run with published RTP, see our best online casinos USA guide, and for how blackjack ranks against the rest of the floor, our casino games best odds guide.
Blackjack Strategy — FAQ
Does basic strategy guarantee you’ll win?
No. Basic strategy lowers the house edge to about 0.5% — the lowest on the floor — but it doesn’t remove it. You still lose over the long run, just far slower than playing on feel. It’s about maximizing value, not guaranteeing wins.
Is card counting legal, and does it work online?
Counting is legal, but it does not work on online RNG blackjack — every hand is reshuffled from a full deck, so there’s no running count. It’s theoretically possible only at deep-dealt live single-shoe tables, and impractical even there. Online, forget it.
Should I take insurance?
No. Insurance is a sucker bet: the payout doesn’t match the true odds, so it raises your effective house edge. Basic strategy says never take insurance, and never take “even money” on your own blackjack either.
What’s the difference between 3:2 and 6:5 blackjack?
The blackjack payout. 3:2 pays 1.5× your bet on a natural; 6:5 pays only 1.2×. That downgrade adds roughly 1.4% to the house edge — enough to wreck blackjack’s value. Always play 3:2 and avoid 6:5 tables.
What is the best blackjack RTP?
Up to about 99.5% (0.5% house edge) on a favourable table — 3:2 payout, dealer stands on soft 17, fewer decks, double after split — played with perfect basic strategy. Poor rules or off-chart play push the RTP down fast.
The Monkey’s Take
Blackjack is the best bet in the house, but it’s a conditional one: it rewards the small effort of learning a chart and punishes everyone who won’t. Memorize basic strategy, play only 3:2 tables with dealer-stands-on-17, never touch insurance or side bets, and ignore every online counting “system” — that’s the entire winning approach, and it gets you the lowest edge in the casino. Skip the homework and you’re playing a worse game than the slots you were trying to beat. Learn the one chart; it’s the highest-return hour of study in gambling. And it’s still, honestly, a slow loss — just the slowest one on the floor.
Playing at a real table online? See our live dealer casino USA guide — the chart works identically on live blackjack.
18+ (21+ where required) · Play responsibly. Basic strategy lowers the edge; it never removes it. Problem gambling? Call 1-800-GAMBLER, or the National Council on Problem Gambling helpline at 1-800-522-4700.