How does gin rummy scoring work in simple terms?

At the end of a hand, each player totals the value of their unmatched cards, called deadwood. The player who knocked scores the difference between the two deadwood counts. Going gin adds a 25-point bonus, and undercutting the knocker also adds 25. Points accumulate hand by hand until someone reaches 100.

How many points is a gin bonus worth?

Going gin — melding all ten cards for zero deadwood — earns a 25-point bonus on top of the opponent's entire deadwood count. The opponent cannot lay off against a gin hand, so all of their unmatched cards count in full.

What is an undercut and how is it scored?

An undercut happens when the player who knocks does not go gin, and the defender's deadwood ends up equal to or lower than the knocker's after laying off. The defender then wins the hand and scores the deadwood difference plus a 25-point undercut bonus.

What are line and game bonuses in Gin Rummy?

When a game to 100 ends, the winner adds a game bonus (commonly 100 points) plus a line or box bonus (typically 25 points for each hand they won). If the loser scored zero all game, the winner's total is often doubled as a shutout.

How many points do you need to win a game of Gin Rummy?

A standard game is played to 100 points. After each hand the winner adds that hand's score to a running total, and play continues until one player crosses 100, at which point end-of-game line and game bonuses are applied.

Gin Rummy Scoring Explained: Points, Bonuses & the Undercut

Once you know the moves, gin rummy scoring is the piece that decides who actually wins, and it is far simpler than the tangle of bonuses can first suggest. Every hand ends with a small pile of arithmetic: someone knocks, both players reveal their cards, unmatched cards are added up, and the winner banks the difference plus any bonus they earned. Learn that one rhythm and the whole point structure falls into place. This guide walks through each rule in order, then ties them together with a full worked example so you can score any hand with confidence.

If you are brand new to the moves themselves, the companion Gin Rummy rules guide covers the deal, drawing, and melding. Here we focus purely on the numbers. When you are ready to see scoring happen automatically, our Gin Rummy table tallies every point for you.

Gin rummy scoring starts with deadwood

All scoring in Gin Rummy flows from one number: your deadwood. Deadwood is the total point value of the cards in your hand that are not part of a meld, where a meld is a set of three or four cards of the same rank or a run of three or more cards in the same suit. Anything left over counts against you.

The point values are easy to memorize. Aces are low and worth 1 point. Number cards are worth their face value, so a 6♦ is 6 points and a 9♣ is 9 points. The three face cards — jack, queen, and king — are each worth 10 points, and the 10 is also worth 10. Suits carry no bonus; a spade counts the same as a heart. To find your deadwood, ignore every melded card and simply add up the ranks of the rest. A hand with two melds and leftover cards of K♥ 4♠ 2♣ has deadwood of 10 + 4 + 2 = 16 points.

Scoring a knock: the difference wins

A player may knock the moment their deadwood drops to 10 points or fewer. Knocking ends the hand: the knocker lays down their melds and shows their deadwood, and the opponent (the defender) does the same. Before the count is settled, the defender may lay off — attaching their own unmatched cards to the knocker's melds. If the knocker shows a run of 5♦ 6♦ 7♦, the defender can slide their 4♦ or 8♦ onto it, removing that card from their own deadwood.

Once lay-offs are done, both deadwood totals are compared. If the knocker's count is lower, the knocker scores the difference between the two totals. For example, if the knocker has 4 points of deadwood and the defender has 19, the knocker scores 19 − 4 = 15 points. That difference is the everyday bread and butter of gin rummy scoring; most hands are decided by exactly this subtraction.

The gin bonus: melding everything

The cleanest way to end a hand is to go gin — arranging all ten cards into melds so your deadwood is zero. Going gin earns a 25-point bonus on top of the opponent's full deadwood count. Just as important, an opponent cannot lay off against a gin hand, so every unmatched card they hold counts against them. If you go gin and your opponent is caught with 18 points of deadwood, you score 25 + 18 = 43 points for the hand. Because there is no deadwood difference to erode your total and no lay-offs to soften the blow, gin hands produce the biggest single-hand swings in the game.

Big gin

Some house rules reward an even rarer finish called big gin: melding all eleven cards, meaning you complete a full hand of melds without discarding after your final draw. Big gin typically pays a larger bonus — commonly 31 points instead of 25 — again added to the opponent's entire deadwood, with no lay-offs allowed. It is uncommon, but worth knowing so a well-earned big-gin bonus is scored correctly when it appears.

The undercut: punishing a risky knock

Knocking is not risk-free, and the undercut is why. When a player knocks with deadwood but does not go gin, the defender has a chance to turn the tables. If, after laying off, the defender's deadwood is equal to or lower than the knocker's, the defender wins the hand instead. This is an undercut, and it pays the defender the deadwood difference plus a 25-point bonus.

Say the knocker knocks with 9 points, feeling safe. The defender lays off two cards and is left with just 6. That is an undercut: the defender scores (9 − 6) + 25 = 28 points, even though it was the other player who ended the hand. This single rule is why experienced players hesitate to knock at the maximum count of 10 and prefer to wait for a much lower deadwood before knocking, or to hold out for gin, where no undercut is possible.

Line and game bonuses

Individual hands accumulate toward a target, and when a game finishes there are extra bonuses that reward consistent winners. These vary by house rules, but the common ones are:

Game bonus. The player who first reaches the target score adds a flat bonus, usually 100 points, to their total.
Line bonus (box bonus). The winner also earns a bonus — typically 25 points — for each hand they won during the game. If you won seven of the hands played, that is an extra 175 points on top of everything else.
Shutout (skunk). If the loser never scored a single point all game, the winner's overall total is often doubled. It is brutal, and unforgettable when it happens.

These end-of-game bonuses can dwarf the running scores, which is why winning many small hands matters even when no single hand was dramatic.

Playing to 100

A full game of Gin Rummy is played to 100 points. After each hand, the winner's score for that hand is added to their running total; the loser adds nothing. Play continues hand after hand until one player crosses 100. At that moment the game ends and the line and game bonuses are applied to decide the final margin. Because a couple of clean gin hands or a well-timed undercut can each swing 25 to 45 points, a game can turn around quickly right up to the finish.

A full worked scoring example

Let us score a complete hand. You knock with your melds laid down and only the 3♠ left over, so your deadwood is 3 points. Your opponent reveals their hand with unmatched cards of K♥ 8♣ 8♦ 5♠, a raw deadwood of 10 + 8 + 8 + 5 = 31 points.

Now lay-offs. One of your melds is the run 6♣ 7♣ 8♣, so your opponent lays off their 8♣ onto it — wait, that 8 belongs to the club suit and your run is clubs, so it attaches, removing 8 points. Their remaining deadwood is K♥ 8♦ 5♠ = 10 + 8 + 5 = 23 points. Your 3 is still lower, so you win the hand and score the difference: 23 − 3 = 20 points.

Now imagine the same knock, but the opponent could lay off enough to reach just 2 points of deadwood. Because 2 is below your 3, that would be an undercut: the opponent would score (3 − 2) + 25 = 26 points instead, and you would score nothing. Same knock, wildly different outcome — which is exactly the tension that makes gin rummy scoring so gripping.

Start scoring your own hands

Scoring becomes second nature after a few rounds, because every hand repeats the same steps: count the deadwood, allow lay-offs, take the difference, and add any gin, undercut, or end-of-game bonus. The quickest way to internalize it is to play, so deal a hand at our Gin Rummy game, where the deadwood, differences, and bonuses are calculated automatically while you concentrate on the cards. For a refresher on the moves behind the math, revisit the Gin Rummy rules any time.