Quick answer: If you have a hard 17 against a dealer 4, stand. In standard blackjack basic strategy, hard 17 is already strong enough that taking another card creates far more risk than value. The dealer’s 4 is also a weak upcard, so you have an additional reason to let the dealer draw rather than risk busting your own hand.
This recommendation applies broadly across common single-deck, double-deck, and multi-deck blackjack games. But there is one distinction you should make immediately: hard 17 is not the same hand as soft 17 (A-6). Soft 17 can take a card without busting, so its strategy is much more aggressive.
Blackjack 17 vs 4: the basic-strategy play
For an ordinary hard 17 against dealer 4:
- Hard 17 vs 4: Stand
- Soft 17 (A-6) vs 4: Usually double if allowed; otherwise hit
If you are learning the full game rather than one hand at a time, use TwentyOne’s interactive blackjack strategy chart or start with the complete basic-strategy guide.
The hard-hand rule is especially easy to remember: stand on hard 17 or higher. Unlike the decisions around 12 through 16, the dealer’s upcard does not normally change that instruction.
Why standing on hard 17 is correct
A hard 17 is not a spectacular hand, but it is a finished hand. You already beat every dealer total from 12 through 16, and if the dealer busts you win automatically. Your main danger is that the dealer finishes with 18, 19, 20, or 21.
Hitting does not solve that problem efficiently. Instead, it introduces a large new way to lose: busting immediately.
From a fresh infinite-deck approximation, a hard 17 busts when the next card is a 5, 6, 7, 8, 9, or any ten-value card. That represents 9 of the 13 rank-equivalent outcomes:
9 / 13 = 69.23%
So nearly seven times out of ten, a random next card busts a hard 17 immediately. In a real finite shoe, the exact percentage changes slightly according to which cards have already been removed, but the basic-strategy conclusion remains the same: do not hit hard 17 against dealer 4.
It is important not to use bust probability as a complete blackjack strategy by itself. Expected value accounts for everything that can happen after each decision. Still, the 69.23% figure makes the intuition clear: improving 17 by hitting is difficult, while destroying it is easy.
Dealer 4 is a weak upcard
The dealer’s 4 makes standing even easier to understand. A dealer showing 4 must continue drawing until reaching the table’s required stopping point. That creates meaningful bust potential because many drawing sequences force the dealer through stiff totals before reaching 17 or higher.
You can see the broader pattern in our dealer bust odds by upcard. Dealer 4, 5, and 6 are the classic weak upcards, although their exact bust probabilities depend on rules such as whether the dealer hits or stands on soft 17.
This does not mean “always stand when the dealer has a 4.” For example, hard 11 should generally be doubled, while some lower totals should hit. The correct lesson is narrower: when you already hold a made hard 17, there is no reason to turn the hand into a high-risk drawing hand just because 17 sometimes loses.
What cards can actually improve hard 17?
If you hit a hard 17, only four rank categories avoid an immediate bust:
- Ace → 18
- 2 → 19
- 3 → 20
- 4 → 21
Every 5 through 9 busts, and every 10, jack, queen, or king busts. Ten-value cards are especially important because there are four ten-valued ranks in a standard deck.
This is why “I need to improve my 17” is the wrong mental model. Blackjack decisions are not about maximizing your final total at any cost. They are about choosing the action with the best expected result. Standing preserves a legitimate winning hand and transfers the drawing risk to the dealer.
Hard 17 vs soft 17: do not confuse them
The most important exception is not really an exception at all—it is a different hand type.
Hard 17 might be 10-7, 9-8, or a multi-card total such as 5-5-7. Hitting these hands can bust immediately.
Soft 17 contains an Ace that can still count as 11, most commonly A-6. If you hit A-6 and draw a 10, the Ace changes from 11 to 1, leaving you with hard 17 rather than a bust.
Against dealer 4, common multi-deck basic strategy calls for doubling A-6 when doubling is permitted. If you cannot double, hit. That is dramatically different from hard 17, which stands.
See the soft-hand strategy guide for the underlying pattern. This distinction is one of the most useful habits a new player can build: identify whether a total is hard or soft before looking at the number alone.
Does H17 vs S17 change 17 vs 4?
No. Whether the dealer hits soft 17 (H17) or stands on soft 17 (S17) does not change the standard play for your hard 17 against dealer 4. You stand in either game.
H17 and S17 do matter elsewhere. They alter some doubles, surrenders, and Ace-up decisions, and H17 is generally less favorable to the player. Our H17 vs S17 guide explains the differences.
Do not confuse the dealer rule with your own hand. A table that says “dealer hits soft 17” is describing what the dealer must do with A-6. It does not mean players should hit every 17.
Does deck count change hard 17 vs 4?
For standard basic strategy, no meaningful memorization change is needed here. Hard 17 vs dealer 4 remains a stand across common single-deck, double-deck, and shoe games.
Deck count absolutely matters in blackjack overall. It changes card-removal effects, natural-blackjack frequency, some close strategy cells, and card-counting calculations. If you want to understand those differences, read how many decks are used in blackjack.
But 17 vs 4 is not one of the marginal basic-strategy decisions you need to relearn every time you move between a six-deck and double-deck table.
What if your 17 contains more than two cards?
You still stand. A hand such as 10-3-4, 8-5-4, or 6-6-5 is a hard 17 and should stand against dealer 4.
Composition-dependent strategy can matter in some very close blackjack decisions because the exact cards in your hand slightly alter the remaining deck. But hard 17 vs 4 is not a practical basic-strategy boundary. Once you have reached hard 17, the standard action is to stop drawing.
This is useful at the table because it gives you a simple endpoint: if repeated hits bring a hard hand to 17 or higher, you generally stop.
What about surrender?
Surrender is not relevant to an ordinary hard 17 against dealer 4. Late surrender is designed for a small number of especially poor starting matchups, not for a made 17 facing a weak dealer card.
If your casino offers surrender, learn the important spots separately in our blackjack surrender guide. You should not surrender 17 vs 4.
Does card counting ever make you hit 17 vs 4?
For practical Hi-Lo play, hard 17 vs 4 is not a decision you should treat like the famous close deviations around stiff hands. The normal play is overwhelmingly straightforward: stand.
Card counting is most useful when it identifies situations where the remaining shoe materially changes the value of bets, insurance, and selected close strategy decisions. It does not mean every basic-strategy cell constantly flips.
If you are learning counting, first become automatic with basic strategy, then learn the Hi-Lo system and the difference between running count and true count.
How 17 vs 4 fits the stiff-hand pattern
The easiest way to understand this hand is to compare it with nearby totals. Against dealer 4, hard 13 through 16 also generally stand because the dealer is vulnerable and hitting those stiff hands carries substantial bust risk. Hard 17 is even more clearly a stand because it can also push a dealer 17 rather than losing to it.
For comparison, read blackjack 16 vs 4. That article shows the same “let the weak dealer draw” principle on a more uncomfortable total. Once your hand improves from 16 to 17, the stand becomes even more intuitive.
And if you are working through the hard-17 series, the neighboring guides reinforce an important rule: 17 vs 5, 17 vs 6, and 17 vs 7 all stand as well.
Common mistakes with 17 vs 4
Mistake 1: Hitting because “17 is too low.”
Seventeen loses to 18 through 21, but that does not make hitting profitable. A hard 17 already has substantial showdown value, while a hit carries a very high immediate bust risk.
Mistake 2: Treating hard 17 and A-6 the same.
A-6 is soft 17 and can draw without immediately busting. Against dealer 4 it is generally a doubling opportunity when allowed.
Mistake 3: Copying the dealer.
The dealer follows fixed drawing rules. Players have different options—including doubling, splitting, surrendering, and choosing when to stop. “Play like the dealer” is not basic strategy.
Mistake 4: Standing on everything against a dealer 4.
Dealer 4 is weak, but your own total still matters. Basic strategy compares the expected value of each available action; it is not a blanket rule to stop drawing whenever the dealer shows a small card.
A simple memory rule
For hard totals, memorize this anchor:
Hard 17 or higher: stand.
Then separately learn the soft-hand chart, because an Ace that can still count as 11 changes your options. That separation prevents one of the most common beginner errors in blackjack.
If you want to make the decisions automatic rather than memorizing isolated facts, our guide to reading a blackjack strategy chart explains how to organize hard totals, soft totals, and pairs.
FAQ
Should I hit 17 against a dealer 4?
No. Stand on a hard 17 against dealer 4. Hitting creates a large immediate bust risk and has lower expected value than keeping the 17.
Should I stand on A-6 against dealer 4?
No. A-6 is soft 17, not hard 17. In common multi-deck basic strategy, double soft 17 against dealer 4 when doubling is allowed; otherwise hit.
Does the dealer hitting soft 17 change my hard 17 vs 4 play?
No. Stand on hard 17 vs 4 in both H17 and S17 games.
What is the chance of busting if I hit hard 17?
Using an infinite-deck rank approximation, 5 through 9 plus all ten-value cards bust a hard 17. That is 9 of 13 rank-equivalent outcomes, or about 69.23%. The exact finite-shoe probability depends on the cards already removed.
Should I ever surrender 17 vs 4?
No. Standard surrender strategy does not surrender hard 17 against dealer 4.
What if I have a three-card 17 against dealer 4?
Stand. A multi-card hard 17 is still a hard 17 for this basic-strategy decision.
Bottom line
Stand on hard 17 against dealer 4. You already have a made hand, the dealer has a vulnerable upcard, and hitting exposes you to an enormous bust risk. The main distinction to remember is that soft 17 (A-6) is different: against a 4, it is generally doubled when possible and hit otherwise.
Learn that hard-versus-soft distinction and the decision becomes simple: hard 17 stops; soft 17 still has room to improve.
