Gin Rummy Scoring Explained: Knock, Gin, Undercut and the 100-Point Game

Two players sit down and play nine hands of gin rummy. In North America the game is over. In Britain it isn't, and they keep dealing. Nothing about the cards or the play was different. Only the bonus scale was, and that's the part of gin rummy scoring almost nobody explains.

What Is Each Card Worth in Gin Rummy?

Kings, queens and jacks count 10 points each, aces count 1, and every number card counts its face value (Pagat, "Gin Rummy", updated September 2026). Bicycle Cards puts it the same way: "the figure cards are worth 10 points and the other cards are worth the value indicated by their pips." This is the one part of gin rummy scoring that no rulebook argues about.

The ace is where beginners slip. It's low only, worth a single point, and it never counts 11. That holds for melding too, so A-2-3 of a suit is a legal run and Q-K-A is not.

How Is a Single Hand Scored?

A hand ends when someone knocks or goes gin, and the score is a difference, not a total. If the knocker's deadwood is lower, "the knocker scores the difference between the two counts" (Pagat). A hand is worth the gap between the two deadwood counts, never the count itself. If it isn't, the opponent takes that difference plus an undercut bonus, and the knocker scores nothing at all.

One asymmetry decides more hands than anything else here. The opponent may lay off deadwood onto the knocker's melds, dropping their own count; the knocker may not lay off in return. So the number that matters is your opponent's count after lay-offs. Gin is the exception, because a gin hand allows no lay-offs and the opponent's full count stands.

Big Gin, where you meld all eleven cards without discarding, deserves a caution. Pagat doesn't mention it, and neither does Bicycle Cards or the Gettysburg College rules document. The 31-point figure comes from app implementations and from Wikipedia citing a 1942 Jacoby rulebook. Treat it as common in software and absent from the traditional books.

If any of that machinery is unfamiliar, the full gin rummy rules walkthrough takes one teaching hand and plays it through all four outcomes. The rest of this guide is about what happens after the hand score is written down.

Is the Gin Bonus 20 or 25? Why Both Answers Are Right

Both numbers are correct, and the split is geographic rather than a disagreement. The Gettysburg College rules document, written for an academic gin rummy AI competition, states it directly: "North American play tends to award 25 points for gin and undercut bonuses, whereas in the U.K., gin and undercut bonuses are 20 and 10, respectively" (Neller, Gettysburg College, "Gin Rummy EAAI Undergraduate Research Challenge").

Once you know that, the pattern in the sources snaps into focus. Pagat is John McLeod's British reference and scores gin at 20 with a 10-point undercut. Bicycle Cards, following the same traditional scale, agrees. The Gettysburg rules, Gin Rummy Stars and most mobile apps use 25 across the board. Pagat itself flags the variation rather than dismissing it.

The two gin rummy bonus scales aren't a contradiction. They're a convention that crossed the Atlantic and changed on the way. The Gettysburg College rules note that North American play "tends to award 25 points for gin and undercut bonuses, whereas in the U.K., gin and undercut bonuses are 20 and 10." Neither table is playing it wrong. They're playing two regional standards with identical rules of play and different price tags.

The practical takeaway is short. Ask which scale your table uses before the first deal, or open the rules screen in your app. The undercut guide goes deeper on how that one bonus varies and what it does to the defender's decisions.

What Are Line and Box Bonuses?

A box bonus, also called a line bonus, is awarded for each hand you won over the course of the game. Pagat is explicit: "Each player adds a further 20 points for each hand they won. This is called the line bonus or box bonus." Most apps and North American tables use 25 per hand instead.

Here's the rule that trips people up, and it's the reason a box bonus can feel like it appeared from nowhere. Box points are counted at settlement only. They cannot be used to reach the 100 points that ends the game. So a player can be sitting on six box bonuses and still be nowhere near ending anything.

That timing has a real consequence. During the game you're watching one number, the running hand total. At the end you're suddenly handed three more layers of arithmetic. Plenty of tables reach the end of a game and then argue for ten minutes about the final tally, not because anyone miscounted, but because nobody agreed in advance which bonuses were in play.

What Is the Game Bonus, and What Happens on a Shutout?

The first player whose cumulative hand score reaches 100 or more wins the game and adds a 100-point game bonus (Pagat; Bicycle Cards; Gettysburg College rules all set the target at 100). That single bonus is usually the largest number on the scoresheet, and it's the reason the race to 100 matters more than the hand count.

A shutout is a game in which the loser never scored at all. Pagat handles it by upgrading the winner's bonus: "If the loser failed to score anything at all during the game, then the winner's bonus is 200 points rather than 100." Bicycle Cards arrives at the same place by a different route, awarding 100 for the game and another 100 for winning every round. Same total, different bookkeeping. Depending on where you play, you'll hear it called a shutout, a schneider or a blitz.

A Full Match, Scored Hand by Hand, Twice

One match, scored both ways, settles 279 to 180 on the North American scale and doesn't even finish on the British one. Player A wins three hands with gin. Player B wins six hands on small knock margins. Every card played is identical in both columns; only the bonus scale changes.

Two things fall out of that table, and both are counterintuitive.

The first is that the scale changed when the game ended, not just the margin. Player A crosses 100 at hand nine on the North American scale with 104. On the British scale the same three gin hands are worth five points less apiece, leaving A on 89 and eleven short. Same cards, same play, and one table is settling up while the other is shuffling.

The second is the settlement itself. On the North American scale, A takes 104 in hand points, 75 in box bonuses for three hands won, and the 100-point game bonus, for 279. B takes 30 in hand points and 150 in box bonuses for six hands won, for 180. Player B won two hands out of every three and lost by 99 points.

Winning more hands of gin rummy does not mean winning the match. In a nine-hand game scored on the North American scale, a player who won six hands on small knock margins finished on 180 points, while an opponent who won only three hands, all of them gin, finished on 279. Six box bonuses at 25 points each are worth less than a single 100-point game bonus.

What you do about that is a strategy question, not a scoring one, and the knock-versus-gin expected-value math covers it properly. The point here is narrower: the arithmetic rewards ending games, and it rewards ending them big.

How Do Hollywood and Oklahoma Scoring Change the Math?

Both variants keep the hand scoring identical and change the accounting around it. Hollywood gin dates to the game's 1941 boom, when, as Pagat puts it, "gambling bonuses were added and a method of playing three games at once was devised."

The Hollywood method runs three games side by side on one sheet. Your first win is entered in game one. Your second win is entered in games one and two. Your third and every later win is entered in all three. Each column ends independently when someone reaches 100 there, and the player who takes two of the three columns wins overall.

Oklahoma gin changes one deal at a time. The upcard sets the knock limit for that hand, and there's a scoring twist attached to it: if the upcard is a spade, "the final score for that deal (including any undercut or gin bonus) is doubled" (Pagat). Games generally run to 150 rather than 100 to absorb the swings.

A doubled spade deal on top of a gin bonus is the single biggest hand in common play. On the North American scale, a gin against 20 points of deadwood is worth 45, and a spade upcard makes it 90.

Why Does Scoring Look Different in a Cash App?

Most people who look up gin rummy scoring are holding a phone, and the number on their screen doesn't match the rulebook they just read. There are two separate reasons, and mixing them up causes most of the confusion.

The first is the scale. Apps overwhelmingly use the North American 25-point bonuses, and Gin Rummy Stars documents exactly that chain of 25s, so an app disagrees with Pagat before a single card is dealt. The second is structural. A rulebook game is a race to 100 spread across many hands, with box bonuses, a game bonus and a possible shutout settled at the very end. A single timed match has no multi-hand game wrapped around it, so those three layers have nothing to attach to and generally don't appear at all.

That's worth stating plainly, because it's the practical answer: a tournament score and a rulebook game score are different quantities. If you learned to keep score at a kitchen table, expect the match total in an app to read differently, and check the rules screen rather than assuming.

In Gin Rummy Cash, both players are dealt the same deck, so the comparison is between two scores built from identical cards. That format is why the app's number is a match score rather than a game score. For how the money side works, the guide to playing gin rummy for real money covers entries, prizes and cash-outs, and the cash-match tactics guide covers playing to the clock.

Practically, read the rules screen once before your first match. It takes thirty seconds and settles every number in the tables above. Gin Rummy Cash runs on iPhone and iPad through the App Store, and on Android through a direct APK from the official Atay site, because real-money skill games aren't listed on Google Play. Practice mode is free, cash matches start from $1, cash-outs start at $5, real-money play is 18+, and prize eligibility depends on where you live. The platform is Skillz, operated by Firy Inc.

Frequently Asked Questions

A note on rules and results. Scoring scales vary by book, table and app; where this guide gives a number, it names the source, and your app's rules screen is the final word for that app. Skill-based cash games involve real money. Understanding the scoring makes you a better bookkeeper, not a winning player; that takes practice, and even good play loses hands. Real-money play is 18+ and depends on your location.