How Is Bridge Scored? A Beginner's Guide

How Many Points Is Each Trick Worth in Bridge?

Before anything else, you need to know the value of a trick. In bridge, only the tricks you bid for count toward your score. The first six tricks taken by the declaring side are simply expected and score nothing. They are called the “book.” Everything above six is where the points begin.

The value per trick depends on the suit named as trumps, or whether you are playing in no trump:

So if you bid 2 Spades and make exactly eight tricks, your trick score is 2 × 30 = 60. If you bid 3 No Trump and make nine tricks, the score is 40 + 30 + 30 = 100.

This is why experienced players tend to prefer the major suits. Hearts and spades score more per trick, which means you reach the important game bonus threshold more quickly than you would in clubs or diamonds.

What Is the Difference Between a Game and a Part Score?

The magic number in bridge scoring is 100. If the contract you have bid and made scores 100 or more trick points, you have bid and made a game. That earns a substantial bonus on top of your trick points. A contract worth fewer than 100 trick points is called a part score, and it earns only a small bonus.

The standard game-level contracts are:

Anything below those thresholds is a part score. In rubber bridge, part scores can accumulate across multiple hands until they reach 100. In duplicate bridge, each hand is independent and a part score earns a flat +50 bonus only.

Knowing the difference between a part score and a game is one of the most important things to carry with you into every bidding conversation. The bridge rules page explains how bidding levels work if you would like more context on this.

Why Is 3 No Trump a Game But 3 Spades Is Not?

This is one of the most common questions new players ask, and the answer becomes obvious once you do the arithmetic.

To reach game in spades or hearts, you need to bid to the four level: 4 Spades or 4 Hearts (4 × 30 = 120 points). In clubs or diamonds, you need to go even higher, to the five level (5 × 20 = 100 points).

This is precisely why bridge players so often prefer to bid games in no trump or a major suit. Reaching game in a minor suit requires making eleven tricks out of thirteen, which is a demanding target. Reaching game in spades or hearts needs only ten tricks, and 3 No Trump needs only nine.

The practical result: when both no trump and a major suit game are possible, most experienced pairs will prefer the path that requires fewer tricks. Understanding why is one of the small moments where bridge scoring and bridge strategy click together for the first time.

What Bonuses Can You Earn When You Make Your Contract?

Making a game or a slam earns a separate bonus on top of your trick points. These bonuses are what make ambitious bidding worthwhile.

To see how those numbers add up in practice: a vulnerable game in 4 Spades made with exactly ten tricks scores 4 × 30 + 500 = 620. That is why experienced players are always willing to push to game when the cards look right. The bonus alone more than justifies the effort.

Slam bonuses are even more striking. A vulnerable grand slam adds 1,500 points in bonuses alone. That is why partnerships invest time learning conventions like Blackwood and slam bidding techniques before committing to the seven level. The bridge bidding hub covers all of this in detail.

What Happens to the Score If You Do Not Make Your Contract?

Bridge penalises failure. If you bid a contract and do not take the required number of tricks, the opponents score points for each trick you fall short. Those shortfalls are called undertricks.

So if you bid 4 Hearts and take only eight tricks, you are two tricks short. Not vulnerable, that costs your side 2 × 50 = 100. Vulnerable, it costs 2 × 100 = 200.

This is the central tension in bridge. The bonuses for making games and slams are large, but so are the penalties for failing. Good bidding is about finding contracts that are likely to succeed, not simply chasing bonuses. The common beginner mistakes article covers some of the bidding errors that come from misreading this balance.

What Does “Vulnerable” Mean and Why Does It Change the Scoring?

Vulnerability sounds technical but the idea is simple. In duplicate bridge, each hand is dealt with a vulnerability status already assigned, and you can see it marked on the board. In rubber bridge, your side becomes vulnerable as soon as you win your first game in the rubber.

Being vulnerable means the stakes are higher for your side. The game bonus you earn for making a game is larger (500 instead of 300), but the penalty for going down is also steeper (100 per undertrick instead of 50). Slam bonuses increase too.

For more on bridge vocabulary, the bridge terminology guide is worth a read.

How Is Rubber Bridge Scoring Different from Duplicate Bridge Scoring?

Both formats use the same trick point values, but the bonus structure works quite differently.

Rubber bridge

Rubber bridge is the traditional home and club format. Scores are kept on a sheet with a vertical line dividing “We” and “They,” and a horizontal line across the middle. Trick points go below the line; overtricks, bonuses, and penalties all go above the line.

Part scores accumulate below the line across multiple hands. The first side to reach 100 below the line wins a game. Win two games and you win the rubber, earning one final bonus:

Worked example: filling in a rubber bridge score sheet

Say North–South are playing East–West. Here is how the first three hands might look:

Hand 1: North–South bid 2 Spades and make exactly eight tricks. Trick score: 2 × 30 = 60. Write 60 in the “We” column, below the line. Neither side has yet reached 100.

Hand 2: East–West bid 3 No Trump and make ten tricks (one overtrick). Trick score: 40 + 30 + 30 = 100. East–West have made game. Write 100 in the “They” column below the line. The overtrick (30 points) goes above the line in the “They” column. A line is drawn below the current scores to mark the end of this game, and the part score North–South had (60 points) is cleared: it no longer counts toward the next game.

Hand 3: North–South bid 4 Spades and make ten tricks. Trick score: 4 × 30 = 120. North–South have made game. Write 120 below the line. Draw another line. North–South now have one game each.

A rubber bridge score sheet after three hands. The horizontal lines mark the end of each game.

Rubber bridge also includes honor bonuses, which do not exist in duplicate. If one player holds the top five trump cards (Ace, King, Queen, Jack, Ten) in a single hand, their side scores 150 points above the line. Four of those five honors in one hand scores 100 points. Holding all four aces in a no trump contract also scores 150 points.

Duplicate bridge

Duplicate bridge is the format used in clubs and tournaments worldwide. Every hand is independent, so there is no carrying forward of part scores. All bonuses are awarded in full on each hand. Part score contracts earn a flat +50. Game contracts earn +300 or +500 depending on vulnerability. Honor bonuses do not exist in duplicate.

Because the same hands are played at multiple tables, your score is compared against other pairs who held the same cards.

A note on IMP scoring

One more format you may come across at a club is IMP scoring: International Match Points. This is used in team games rather than individual pair games. Instead of comparing your score against every other table, your result is compared only against one other team playing the same cards in the opposite direction. The raw point difference is then converted to a compressed scale of 0 to 24 IMPs, which means one bad hand cannot sink a whole match on its own.

If you hear the word at your club and want to understand it properly, the duplicate bridge explained article covers it clearly. For the traditional home format, contract bridge explained is the place to start.

How Does Doubling Affect the Score in Bridge?

Doubling adds drama to bridge scoring. When you believe the opponents cannot make their contract, you may double: and this changes the numbers significantly in both directions.

If the doubled contract succeeds

• The trick score is doubled.
• The declaring side earns an extra 50-point “insult bonus.”
• Overtricks score 100 per trick (not vulnerable) or 200 per trick (vulnerable), rather than the normal rate.

If the doubled contract fails

The penalty for each undertrick increases sharply:

The defending side can redouble if they believe the contract will succeed, which doubles everything once more. Redoubles are rare, but when they succeed, the scores are memorable.

Bridge Scoring Quick Reference: All the Numbers in One Place

Keep this table nearby until the numbers feel automatic. Everything you need is here. The values follow the Laws of Duplicate Bridge as published by the World Bridge Federation and the American Contract Bridge League.

Where Do You Go from Here?

Understanding bridge scoring is a genuine turning point. Once the numbers make sense, bidding stops feeling like guesswork and starts feeling like a conversation with a purpose. You understand why your partner pushes to game when the hand is borderline, why experienced players treat a vulnerable slam as a prize worth pursuing carefully, and why vulnerability matters so much when deciding whether to sacrifice.

The natural next step is to see how these scoring principles shape actual bidding decisions. The how to win more at bridge guide covers the practical side of that beautifully. If you are still getting comfortable with the game itself, returning to the Learn Bridge hub will give you a clear path through all the fundamentals in order.

Take your time with scoring. Play a few hands, tally the scores yourself, and it will begin to feel natural before long. Bridge has been enjoyed by millions of people for well over a century, and the scoring system is a large part of what gives it such lasting depth.

Complete Bridge Scoring Reference: Partscore, Game, and Slam Values

For the complete scoring chart including undertricks, doubled contracts, and redoubled contracts, see our bridge scoring chart. Note that in duplicate bridge the partscore bonus is 50 points (not the rubber bonus that applies in rubber bridge).

Why Do Slam Contracts Score So Much More Than Game Contracts?

The large slam bonuses reflect the difficulty and rarity of reaching all-or-nothing contracts. A small slam requires taking 12 of 13 tricks; a grand slam requires all 13. The probability of making either is lower than game contracts, and the bonus compensates for the additional risk. In rubber bridge especially, the slam bonus can be the deciding factor in who wins the rubber.

In duplicate bridge, slam scoring has an additional strategic dimension. When most of the field is in game, bidding a making slam and collecting the slam bonus produces a top board regardless of whether you made one or two overtricks. The difference between a successful slam and a failing game attempt is enormous, which is why slam bidding accuracy has outsized impact on duplicate scores. A 50% slam (one you expect to make half the time) becomes profitable when the rest of the field stays in game, because the slam bonus exceeds the loss from the times it fails.

For how to identify when a slam is available and how to investigate it, see our slam bidding guide, our Blackwood guide, and our Roman Key Card Blackwood guide.