Bridge Scoring Rules: A Complete Guide for Beginners

Bridge scoring confuses a lot of beginners. You make your contract and expect to see a number on the sheet, but then someone mentions “above the line” and “below the line” and “game bonus” and suddenly you’re not sure what any of it means.

This guide breaks it down piece by piece. By the end, you’ll know exactly how every score is calculated, and why bridge scoring is actually clever once you see the logic behind it.

How tricks are worth points

Every contract has a number attached to it: 3NT, 4♠, 5♣. That number tells you how many tricks above six you’re promising to take. If you open the auction at one level, you’re agreeing to take at least seven tricks (six plus one).

When you make your contract, you score points for the tricks you bid, not for overtricks, which get scored separately.

The point values per trick depend on the denomination:

Denomination	Points per trick
Clubs or Diamonds	20
Hearts or Spades	30
Notrump (first trick)	40
Notrump (each after)	30

So a 3NT contract scores 40 + 30 + 30 = 100 points for the tricks you bid. A 4♠ contract scores 4 × 30 = 120. A 5♣ scores 5 × 20 = 100.

That math matters a lot, which leads us to the next concept.

For a full breakdown of how scoring works, see our bridge scoring guide.

Game contracts and the 100-point threshold

Bridge has a built-in target: 100 points in trick scores. Reach it on a single hand by bidding game, and you get a big bonus on top.

The game contracts are:

• 3NT, 100 points (40 + 30 + 30)
• 4♥ or 4♠ — 120 points (4 × 30)
• 5♣ or 5♦ — 100 points (5 × 20)

In duplicate bridge, the version played at clubs and tournaments, the game bonus depends on vulnerability:

• Not vulnerable: +300 bonus
• Vulnerable: +500 bonus

Anything below game scores only a +50 partscore bonus. That’s a significant difference. Bidding 3♠ and making it gets you 50 extra points. Bidding 4♠ and making it gets you 300 or 500.

This is why you’ll hear players say “we’re not in the right game” or “we stopped in a partscore.” The decision of whether to push to game is one of the central judgments in every hand. Duplicate scoring basics explains how this fits into the broader competitive structure if you want to go deeper.

Slam bonuses

Slams are the highest-stakes contracts in bridge. A small slam is a 6-level contract (you bid to take 12 of the 13 tricks). A grand slam is a 7-level contract (all 13 tricks).

The bonuses are substantial:

Contract	Not Vulnerable	Vulnerable
Small slam	+500	+750
Grand slam	+1000	+1500

These bonuses come on top of the trick score and game bonus. A vulnerable grand slam in spades scores 2210 total: 210 for 7 × 30 tricks, plus 500 for game, plus 1500 for the grand slam.

That’s why slam bidding matters so much. Missing a cold small slam is a significant loss, especially in team events where your opponents at the other table may bid it. Rubber bridge scoring uses different slam calculations (since there’s no separate game bonus structure), but the principle of rewarding slams generously is the same.

For the bidding side of getting to slams, the slam bidding basics page covers how partnerships check for the controls needed before committing to the 6 or 7 level.

Overtricks and undertricks

Overtricks are the tricks you take beyond your contract. They score, but at a lower level, the same trick value as undoubled tricks, with no bonus.

If you bid 3♥ and take 10 tricks, you score 90 for the contract plus 30 for one overtrick. The overtrick matters more in rubber bridge (where it affects the final settlement) than in matchpoints, where making 10 tricks vs. 9 might be the difference between a good board and a bad one.

Undertricks are what you give away when you go down. The penalty depends on vulnerability and whether the contract was doubled:

Not doubled:

• Not vulnerable: 50 per trick down
• Vulnerable: 100 per trick down

Doubled (not vulnerable): 100 for the first trick, 200 for the second and third, 300 for each after

Doubled (vulnerable): 200 for the first trick, 300 for the second and third, 400 for each after

Redoubled penalties are double the doubled amounts. Going down three tricks doubled and vulnerable costs 1100 points, which is often more than the value of what your opponents could have made.

This is why vulnerability changes bidding strategy at both the offensive and defensive end.

Honor bonuses

Honor bonuses are a feature of rubber bridge (and Chicago bridge) that doesn’t appear in duplicate. If one player holds four or five of the top honors in the trump suit, their side gets bonus points scored above the line:

• Five honors (A-K-Q-J-10 in trump): 150 points
• Four honors (A-K-Q-J in trump): 100 points
• All four aces in a notrump contract: 150 points

These bonuses apply regardless of whether you make or go down, they’re scored based on cards held, not outcome. In practice, they’re a minor factor in the overall settlement, but they can tip close rubbers.

How IMP scoring and matchpoints differ

In duplicate bridge, the raw score you calculate (using all the rules above) then gets converted into either matchpoints or IMPs depending on the format.

• Matchpoints: Your score is compared to every other pair who played the same deal. Beat them = good result, regardless of how many points you scored.
• IMPs: Your score is compared to one other table. The difference in raw points is converted to IMPs on a logarithmic scale.

These conversions don’t change how you calculate the base score, the trick values, game bonuses, and slam bonuses are always the same. They just change what that score means competitively. IMP scoring explained goes into the full conversion table and strategy implications.

A quick reference table

Contract	Tricks needed	Score (not vul)	Score (vul)
3NT	9	600	800
4♥ / 4♠	10	620	820
5♣ / 5♦	11	600	800
6NT	12	1440	1740
6♥ / 6♠	12	1430	1860
7NT	13	2220	2980
7♥ / 7♠	13	2210	2960

These are for undoubled, making contracts. They include trick score + game bonus + slam bonus where applicable.

What beginners get wrong

Two things trip people up most:

Confusing tricks bid with tricks made. Your score is based on tricks bid, not tricks taken. Make an extra trick and it’s an overtrick, not free points toward your contract.

Forgetting vulnerability. The same contract scores very differently depending on whether you’re vulnerable. An extra 200 on the game bonus and an extra 250 on a small slam, it adds up fast.

Once you’ve played a few sessions with a scoresheet in front of you, the logic becomes instinctive.

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Practice reading scores with Brian

Bridge scoring makes a lot more sense once you see it in action across real hands. Brian is Bridgetastic’s AI bidding coach, try it at app.bridgetastic.com and it’ll walk you through hand after hand, explaining the score each time.