How to Score Badminton: 21-Point Rules and Worked Examples
How to score badminton step by step: rally scoring to 21, deuce at 20-all, the 30-point cap, serving sides, plus the new 3×15 system starting in 2027.
Learning how to score badminton takes about five minutes, and once you get it, you never forget. Badminton uses rally scoring: every rally produces a point, whoever served. This guide explains the current BWF scoring system, which side serves from where, and walks through real examples. It also covers the new 15-point format that BWF has approved for 2027.
For the rest of the rules, see badminton rules for beginners, or start with the complete badminton guide.
How to score badminton: the 5 key rules
Under the current BWF Laws of Badminton:
- Every rally scores. The side that wins the rally adds one point.
- Games go to 21. The first side to 21 points wins the game.
- Win by two. At 20-all, a side must lead by 2 points to win (22–20, 23–21 and so on).
- Cap at 30. At 29-all, the side that scores the 30th point wins the game.
- Best of three. The first side to win two games wins the match.
The side that wins a rally also serves the next rally.
Which side do you serve from?
The server's position is set by the serving side's own score:
| Serving side's score | Serve from |
|---|---|
| 0, 2, 4, 6… (even) | Right service court |
| 1, 3, 5, 7… (odd) | Left service court |
The receiver always stands in the service court diagonally opposite the server.
Worked example: a singles game
Ana and Ben play singles. Ana serves first.
| Rally | Winner | Score (Ana–Ben) | Next server and court |
|---|---|---|---|
| Start | — | 0–0 | Ana, right (0 is even) |
| 1 | Ana | 1–0 | Ana, left (1 is odd) |
| 2 | Ana | 2–0 | Ana, right |
| 3 | Ben | 2–1 | Ben, left (his score, 1, is odd) |
| 4 | Ben | 2–2 | Ben, right |
| 5 | Ana | 3–2 | Ana, left (her score, 3, is odd) |
Notice that when service changes hands, the new server's position depends on their score, not the opponent's.
Worked example: deuce and the 30-point cap
Suppose the game is tied 20–20.
- Ana wins the next rally: 21–20. Not over yet, because she needs a 2-point lead.
- Ben wins: 21–21.
- Ana wins two in a row: 22–21, then 23–21. Ana wins the game.
Now imagine a marathon game that reaches 29–29. The next rally decides it: whoever wins it takes the game 30–29.
Intervals and changing ends
- Interval at 11: When the leading side reaches 11 points, players get up to 60 seconds of rest.
- Between games: Up to 120 seconds.
- Changing ends: After the first game, after the second game, and in the third game when the leading side first reaches 11.
In casual play these breaks are often shorter, but switching ends in the third game is still good practice if one side of the hall has worse lighting or air drafts.
How scoring works in doubles
The score count is identical in doubles: rally scoring to 21, best of three. The difference is who serves:
- Each side has one serve at a time (there is no "second server" as in old badminton scoring).
- If the serving side wins the rally, the same server serves again, switching to the other service court.
- If the receiving side wins, they score a point and become the serving side. Nobody switches courts; the player standing in the correct court for their side's new score (right if even, left if odd) serves.
Positioning and strategy are covered in badminton doubles rules and strategy.
The new 3×15 scoring system (from January 2027)
In April 2026, BWF members voted to adopt a new 3×15 scoring system, which takes effect on January 4, 2027. According to BWF's summary of the key changes:
- Matches are still best of three games, but each game is played to 15 points.
- At 14-all, a side must win by 2 points.
- At 20-all, the side that scores the 21st point wins the game.
- The mid-game interval and the change of ends in the third game happen at 8 points instead of 11.
| Current system (until Jan 3, 2027) | 3×15 system (from Jan 4, 2027) | |
|---|---|---|
| Points to win a game | 21 | 15 |
| Win by 2 from | 20–20 | 14–14 |
| Cap | 30 (at 29–29) | 21 (at 20–20) |
| Interval / third-game change of ends | 11 | 8 |
Until that date, 21-point games remain the official standard. For club nights and casual games, the format is really up to the group or organizer. Many groups already play shorter games to 11 or 15 so more people get court time. Check which format your league or tournament uses.
Keep score on your phone
Keeping track of the score, the server and the correct service court in your head gets hard in a close third game. Kèo's free badminton scorekeeper does it for you:
- Choose 21, 15 or 11 points per game and best of three or a single game.
- Tap your half of the screen to add a point; the serving side and ends are tracked automatically.
- Friendly games need no account. If you want the result to count toward your Kèo rating, send it to your opponent to confirm.
- Share a link so a friend on the sideline can keep score for you, or so others can watch the score live.
FAQ
Is badminton scored to 21 or 15?
Under the current BWF Laws, games are played to 21. BWF has approved a switch to games of 15 points (capped at 21), taking effect on January 4, 2027. Casual groups can play either format.
Can you score a point if you are not serving in badminton?
Yes. Badminton uses rally scoring, so the winner of every rally scores a point, whether they served or received.
What is deuce in badminton?
Players often say "deuce" for 20-all. From 20-all, a side must win by 2 points, up to a maximum of 30 points (at 29-all, the next point wins).
What is the maximum score in a badminton game?
Under the 21-point system, the highest possible game score is 30–29. Under the 3×15 system starting in 2027, the highest possible score is 21–20.
How do you know which side to serve from in badminton?
Look at the serving side's score: serve from the right service court when it is even and from the left when it is odd.
Sources
← See the full guide: Badminton for Beginners: The Complete Guide (2026)