Understanding House Edge Across Popular Casino Games

A €20 lesson I did not forget

Red did not hit. We laughed, played two more spins, and walked away down €40. It felt like bad luck. Later I learned it was not only luck. It was the house edge doing quiet work in the background. You do not feel it in one spin. You feel it over time. This guide shows how and why.

A 60‑second definition that will not bore you

House edge is the casino’s built‑in cut on each bet. It is the long‑run share of each dollar wagered that the game keeps. If a game has a 2% house edge, the house keeps about €2 for every €100 bet in the long run. In the short run, you can win or lose a lot. Over many bets, the math pulls results toward that edge.

This idea links to expected value. Expected value is the average result of a bet if you could repeat it a very large number of times. House edge is the expected loss, as a percent of your bet, for the player side.

Quick math check: when 2% becomes real

Say you make 500 bets at €5 per bet. That is €2,500 in total action. If the house edge is 2%, the long‑run cost is about €50. You may finish up or down on one night. But after many sessions, that 2% is like a toll on the road. The longer you drive, the more you pay. Also note: two games with the same edge can feel very different. Fast, high‑variance games can drain you quicker than slow, push‑heavy games.

Where the numbers come from

House edge comes from the rules and the payouts. In card games, math looks at all possible hands and results. In wheel and dice games, math looks at each outcome and its true odds. In slots and online games, the number comes from the pay table and the random number generator (RNG). Regulators set test rules and ask labs to check the math and the code. See the UKGC Remote Technical Standards for how online games must be tested and listed.

Some regulators also post public win and hold data. This lets you see the long‑term share that casinos keep by game type and by month. A good place to look is the New Jersey payout and hold reports. These reports do not tell you what will happen to you next trip. But they do show how the math behaves over time in a real market.

The snapshot you came for

Use this table as a map, not as law. Rules change by table, site, or state. Slots and video poker change by title and pay table. Side bets often raise the edge a lot. Skill matters in a few games, but not in most.

Blackjack (6–8 decks, H17, no DAS)	0.6%–1.2%	~0.3%–0.5% (S17, DAS, fewer decks, basic strategy)	Dealer hits/stands on soft 17, decks, double after split, surrender, your skill	Medium	High	21+3, Insurance (unless counting)
Roulette (European, single zero)	~2.70%	~1.35% with La Partage on even‑money bets	Wheel type, la partage/en prison rules	Medium	None	Five‑number bet on American wheel
Roulette (American, double zero)	~5.26%	—	Extra zero	Medium	None	Top‑line (00‑0‑1‑2‑3)
Baccarat (Banker)	~1.06%	—	Commission and drawing rules	Low	None	Pair, Dragon, Tie props
Baccarat (Player)	~1.24%	—	—	Low	None	—
Baccarat (Tie)	14%+ (by payout)	—	Payout schedule	Low	None	—
Craps (Pass / Don’t Pass)	~1.41% / ~1.36%	0% on Odds (true odds, no house edge on that part)	How much free Odds you can take/lay	Low–Medium	Low	Any 7, Hardways, Yo, Horn, Field traps
Pai Gow Poker	~1.5%–2.5%	—	Banking rules, commission, push rate	Low	Moderate	Fortune/Bonus side bets
Video Poker (9/6 Jacks or Better)	~0.46% vs player (99.54% RTP)	—	Pay table + perfect strategy	Medium	High	Low‑return variants and bad pay tables
Slots (online)	~3%–6% (RTP 94%–97%)	~2%–3% (RTP 97%–98%)	RTP setting, title, studio, bonus features	High	None	Feature buys with high variance
Slots (Vegas floor)	~6%–12% (varies by denom)	Often lower edge at higher denoms	Denomination, property	High	None	—
Sic Bo / Keno / Game Shows	8%–30%+	—	Pay tables and show rules	High	None	High‑payout props with tiny hit chance

These numbers reflect common rules. Always check local rules and audit notes before you play.

Games that fight back (skill helps)

Blackjack

In blackjack, rules swing the edge. If the dealer stands on soft 17 (S17), the edge drops. If the dealer hits soft 17 (H17), the edge rises. Fewer decks help you. Double after split (DAS) helps you. Surrender can help too. Your play matters a lot. Use basic strategy. One wrong hit or stand can raise the edge fast.

Video poker

9/6 Jacks or Better is a strong base game. The “9/6” means full pay on the key hands. With perfect holds, the return is about 99.54%. That is a 0.46% edge for the house. Bad pay tables cut returns hard, even if the game name looks the same. If you care about the math, read work in the UNLV Gaming Research & Review Journal. You will see how small pay table moves change your results.

Pai Gow Poker

Pai Gow Poker plays slow. Many hands end in a push. That slow pace helps your wallet last longer, even if the edge is near 2%. If you can bank and the house lets you, the math can shift a bit in your favor on that round. Simple, calm play and low swings make this a good fit if you like time on table.

Games you cannot bend (fixed‑rule tolls)

Roulette

European wheels have one zero. The edge is ~2.70%. American wheels have a zero and a 00. The edge is ~5.26%. If a French table offers “la partage” on even money bets, you lose only half when zero hits. That can cut the edge on those bets to ~1.35%. The wheel decides. Your chip spread does not change the long‑run edge.

Baccarat

Banker has the lowest edge at about 1.06% after commission. Player is near 1.24%. Tie is large, often 14% or more, based on the payout. The draw rules are fixed. There is no skill path here. This is why high rollers like the game. It is simple, slow, and the edge on Banker is low.

Craps

Pass and Don’t Pass sit near 1.4% or a bit less. The best part is the free Odds behind the line. Those Odds have 0% edge. The more Odds you can take, the closer your total bet moves to fair. The bad news: many prop bets on the felt have high edges. “Any 7,” “Yo,” and the Horn look fun. They cost you in the long run. Keep it tight.

Slots and “show” games

Slots have a wide range. In Vegas, holds often drop as the dollar value per spin goes up. See the Nevada slot hold by denomination reports. That does not mean high‑denom is “loose” for you tonight. It means that, on average, the take rate is lower. Game show titles and keno‑style games can have very high edges. They look bright. Read the pay table first.

Side bets, swings, and the “one more hand” trap

Side bets sell a dream. They pay a lot when they hit. They miss most of the time. That is why their edge is high. Volatility is how much your results jump up and down. A high‑edge, high‑volatility bet can make you feel close to a big win. It also burns your stack faster on most nights. If your goal is time on game, skip side bets. Make low‑edge base bets and keep your pace slow.

RNG, live wheels, and what fairness seals mean

Online games use RNGs to pick outcomes. Labs test these systems and the math. If you like the details, see the GLI-11 standard for gaming devices. It shows how devices and systems must act and be checked. For deep tech on random bits, the NIST Random Bit Generation pages give the science view.

Many online sites also post audit seals. The group checks that the returns match the stated math over time. A common one is eCOGRA fairness and certification. Click through. Look for a current date and a clear scope. If a claim has no proof behind it, be careful.

What promos and bonuses really do

A bonus can change your net cost, but terms matter a lot. Wagering rules can be high. Some games may not count 100% toward the target. Some wins may cap out. Read the small print and do the math. A small, clear offer may beat a big, strict one.

For a plain look at fair terms, see the UK guidance on fair terms for bonuses. Your goal is to see if a promo cuts your effective edge, or if it locks you into long play that gives the edge back.

Where to play and how to verify the rules

Before you sit down, check the exact rules and pay tables where you plan to play. Look for S17/H17 on blackjack, la partage on roulette, video poker pay tables, and real audit seals. If you care about payment safety, see our quick picks for casinos con pagos seguros. It lists trusted deposit methods and what to expect with fees and speed. Simple checks like these can save you money and stress.

Bankroll: keep the trip fun, not fragile

Pick a session budget before you play. Use bets that match your roll. If you want two hours at a quiet pace, choose slow games and small bets. Take short breaks. Do not chase. If you like to lock a win, set a cash‑out point. Do the same for loss limits. If you hit a limit, stop. The game will be there next time.

Myths we can drop today

“Due to hit.” No. Games do not have memory. Each spin or hand is its own event.
“Hot table.” Streaks happen, but they do not change the edge.
“Dealers change odds.” Staff do not change house math. Rules and payouts do.
“Higher denom slots always pay more.” On average, holds can be lower at higher denoms, but your short run can still be bad. See the American Gaming Association research library for data resources.
“Insurance in blackjack is safe.” Not without advanced skill. For most players it adds cost.

Stay safe and play within the law

Gambling is for adults only. Know your local laws. If play stops being fun, step away. Free help is there. In the US, visit the National Council on Problem Gambling. In the UK, see GambleAware. If you pay taxes in the US, wins are taxable. Read IRS Topic 419 on gambling income before you file.

FAQ

Is house edge the same as RTP?

They link, but are not the same term. RTP is the share paid back to players over time. House edge is 100% minus RTP. For a 97% RTP slot, the edge is 3%.

Do table minimums change the edge?

No. They change pace and risk per hand, not the edge. A €25 minimum drains faster than a €5 table, even with the same rules, because you cycle more dollars.

Can card counting make blackjack positive?

In rare cases, yes. It needs strict rules, deep shoe pen, and strong skill. Many places watch for it and can ask you to stop. It is not a path for most players.

What are the best low‑edge bets for a beginner?

Baccarat Banker, craps Pass/Don’t Pass with Odds, European roulette even‑money with la partage, solid blackjack rules with basic strategy, and full‑pay video poker.

Do live dealer games change the math?

Not the core math. They can change pace and may use different rules. Always read the info panel before you bet.

Sources and how we built the table

We used common rules found on casino floors and licensed sites. For blackjack, we assumed 6–8 decks, dealer hits soft 17, and no double after split in the base row. Best‑case notes add S17, DAS, surrender, and fewer decks with basic strategy. For video poker, “9/6 Jacks or Better” means 9 for a full house, 6 for a flush. Slot ranges use posted RTPs online and public hold data for land‑based slots, by denom and market. We also reviewed regulator and lab docs listed above. We will update this page if rules or standards change. Date of latest review: March 2026.

Want to compare rules fast?

If you want a quick way to compare rules and audited RTPs across licensed sites, our short lists at casinos con pagos seguros can save you time. Check rules, pay tables, and badges before you play.