New Delhi.
Badminton is one of the world’s most popular racket sports, played recreationally as well as at professional level. While the basic objective is simple — hit the shuttlecock over the net and make it land inside the opponent’s court — competitive badminton follows detailed rules covering scoring, serving, court boundaries, faults, lets, singles, doubles and player positions.
The sport is also approaching one of its biggest rule changes in decades. The Badminton World Federation (BWF) has approved a 3×15 scoring system, which is scheduled to replace the current 3×21 format in international badminton from January 4, 2027. Until that date, the current 3×21 system remains the applicable BWF format unless a particular competition specifies otherwise.
What Is Badminton?
Badminton is a racket sport played between either two opposing players in singles or two opposing pairs in doubles.
Players use rackets to hit a shuttlecock over a net. A rally continues until the shuttle lands on the court, goes out, a fault occurs or a let is called.
Under the BWF Laws, a match is normally played as the best of three games. The side that wins two games wins the match.
Current Badminton Scoring System in 2026
As of October 2026, the standard BWF scoring system is 3×21.
This means:
- A match is normally best of three games.
- Each game is normally won by the first side to reach 21 points.
- Every rally produces one point.
- A player or team does not need to be serving to win a point.
- At 20-20, a side must establish a two-point lead.
- If the score reaches 29-29, the side winning the next rally takes the game at 30-29.
- The winner of a game serves first in the following game.
Example of 21-point scoring
Suppose Player A leads Player B:
20-19
If Player A wins the next rally, the score becomes:
21-19
Player A wins the game.
However, if the score reaches:
20-20
the game continues until one player establishes a two-point advantage, subject to the 30-point limit.
For example:
22-20 → Game won
But:
21-20 → Game continues
If the score eventually reaches 29-29, the next rally decides the game.
What Is Rally Point Scoring?
Badminton uses a rally point system.
This means every rally results in a point for one side.
For example, if Player A serves but Player B wins the rally, Player B gets the point and becomes the server.
This is different from older badminton scoring systems in which points were primarily awarded to the serving side.
The rally scoring system makes every rally important because either side can score.
Badminton Match Format
A standard badminton match consists of up to three games.
If a player wins the first two games
The match ends after two games.
For example:
- Game 1: Player A wins
- Game 2: Player A wins
Player A wins the match 2-0.
If the players split the first two games
A third deciding game is played.
For example:
- Game 1: Player A wins
- Game 2: Player B wins
- Game 3: Deciding game
The winner of Game 3 wins the match.
Badminton Service Rules
The service is one of the most important parts of badminton.
The server and receiver must stand in diagonally opposite service courts without touching the boundary lines of those service courts at the moment of service.
Both players must keep some part of both feet in contact with the court surface in a stationary position until the service is delivered. Under the current BWF Laws, the shuttle must be below 1.15 metres from the court surface when it is struck during service.
The service must travel upward over the net and, if not intercepted, land in the receiver’s correct service court.
Even and Odd Score Service Rule
One of the easiest badminton rules to remember is:
Even score = right service court
Odd score = left service court
For example, in singles:
- 0 points → right court
- 1 point → left court
- 2 points → right court
- 3 points → left court
The same basic score-based service-court principle applies in doubles, although the positioning and service rotation are more complex.
Badminton Singles Rules
Singles is played between one player on each side.
In singles:
- The full length of the court is used.
- The court is narrower than the doubles court for rally boundaries.
- The server serves from the right service court when their score is even.
- The server serves from the left service court when their score is odd.
- If the server wins the rally, they score and serve again from the opposite service court.
- If the receiver wins the rally, the receiver scores and becomes the new server.
Example
Player A is serving at 8-6.
Player A’s score is 8, which is even, so Player A serves from the right service court.
If Player A wins the rally, the score becomes 9-6, and the next service is made from the left service court.
Badminton Doubles Rules
Doubles is played between two teams of two players.
The basic scoring system remains the same, but service rotation and court positioning are more complicated.
In doubles:
- The serving side receives a point if it wins the rally.
- The serving side continues serving after winning a rally.
- The server changes service courts after winning successive rallies.
- The serving court is determined by the serving team’s score.
- The player diagonally opposite the server is the receiver.
- Players must follow the correct service order.
A player cannot simply serve from whichever side they prefer. The team’s score and established service rotation determine the appropriate service court.
What Is a Fault in Badminton?
A fault is a violation of the Laws of Badminton that ends the rally.
Common examples include:
- The shuttle lands outside the court.
- The shuttle fails to cross the net.
- A player commits an illegal service.
- A player or racket touches the net during play.
- The shuttle is hit twice by the same player.
- A player deliberately distracts an opponent.
- A player serves or receives from the wrong service court.
- A player serves or receives out of turn.
When a fault occurs, the opposing side wins the rally and receives the point under the rally scoring system.
What Is a Let in Badminton?
A let is different from a fault.
When a let is called, the rally is stopped and the rally is replayed.
A let can occur in situations such as:
- The server serves before the receiver is ready.
- An unexpected or accidental situation disrupts play.
- The shuttle becomes caught in the net in circumstances covered by the Laws.
- An official is unable to make a required decision.
- Play is disrupted by an outside circumstance.
The previous rally does not count and the player who served last serves again.
Badminton Court and Boundary Rules
The badminton court is rectangular and has separate markings for singles and doubles.
Players must understand the difference between:
- Singles sidelines
- Doubles sidelines
- Short service line
- Long service line for singles
- Long service line for doubles
- Centre line
The court boundaries used during a rally are not always the same as those used for serving.
This is why beginners sometimes become confused when a shuttle that appears to be inside the wider court is actually out in singles.
Badminton Net Rules
The shuttle must pass over the net and enter the opponent’s side of the court.
A rally can be lost if the shuttle:
- Fails to cross the net.
- Lands outside the opponent’s court.
- Hits an object that causes a fault under the Laws.
- Is illegally played by the player.
A player must also avoid touching the net with their racket or body in circumstances defined as a fault.
Toss Before a Badminton Match
A toss is conducted before the match begins.
The side winning the toss can choose either:
- To serve or receive first, or
- Which end of the court to start from.
The side losing the toss receives the remaining choice.
When Do Players Change Ends?
Under the current 3×21 BWF system, players change ends:
- At the end of the first game.
- At the end of the second game if a third game is required.
- During the third game when one side first reaches 11 points.
Changing ends helps ensure that environmental factors such as lighting, air movement and other court conditions do not unfairly favour one side.
Breaks and Intervals in Badminton
Under the current rules, an interval of up to 60 seconds is allowed when the leading score reaches 11 points during a game.
A longer interval is allowed between games.
The upcoming 3×15 system will change the in-game interval point to 8 points.
Major Badminton Scoring Change Coming in 2027
One of the biggest recent developments in badminton is the introduction of the 3×15 scoring system.
At its Annual General Meeting on April 25, 2026, BWF members approved the new system by the required two-thirds majority. The new system is scheduled to take effect internationally on January 4, 2027.
Current 3×21 vs New 3×15 System
| Rule | Current 3×21 | New 3×15 |
| Match format | Best of 3 | Best of 3 |
| Normal game-winning score | 21 | 15 |
| Deuce begins at | 20-20 | 14-14 |
| Two-point lead required | Yes | Yes |
| Maximum deciding score | 30 | 21 |
| In-game interval | At 11 points | At 8 points |
| Third-game change of ends | At 11 points | At 8 points |
The new system is intended to create more consistent match durations, faster and more decisive contests and potential benefits for player welfare and scheduling.
How Will the New 15-Point System Work?
Under the new system, each game will normally be won by the first side to reach 15 points.
If the score becomes:
14-14
the game continues until one side establishes a two-point lead.
For example:
16-14 → Game won
But if the score reaches:
20-20
the next point decides the game.
Therefore, the maximum possible score in the new system is:
21-20
The match will remain best of three games.
Why Is Badminton Changing From 21 to 15 Points?
The change is intended to make match durations more consistent and create a faster, more intense format.
BWF has said the change is aimed at improving scheduling, increasing competitive intensity and supporting player welfare and recovery. The organization also expects the shorter format to produce more decisive and dramatic moments during matches.
However, the change also represents a major adjustment for players who have spent years competing under the 21-point system.
What Should Badminton Players Learn Before 2027?
Players competing during the transition period should understand both systems.
For competitions using the current rules, players need to know:
- 21 points per game
- Deuce at 20-20
- Two-point advantage
- 30-point maximum
- Change of ends at 11 in the deciding game
For competitions using the new system from January 2027, players will need to remember:
- 15 points per game
- Deuce at 14-14
- Two-point advantage
- 21-point maximum
- Change of ends at 8 in the deciding game
The exact rules applicable to a particular competition should always be checked with the tournament organizer and the current BWF Laws.
Badminton Rules: Quick Reference
Scoring
- Current standard: 3×21
- Future international standard: 3×15 from January 4, 2027
- Rally point scoring applies.
Singles
- One player per side.
- Even score → right service court.
- Odd score → left service court.
Doubles
- Two players per side.
- Service rotation must be followed.
- The diagonally opposite player receives the serve.
Service
- Server and receiver stand in diagonally opposite service courts.
- Feet must remain stationary until service is delivered.
- The shuttle must meet the applicable service-height requirement.
Fault
A fault ends the rally and gives the opponent the point.
Let
A let stops the rally and results in a replay.
Frequently Asked Questions
How many points are needed to win a badminton game?
Under the current 2026 BWF system, a player or team normally needs 21 points to win a game. From January 4, 2027, the new international system will normally require 15 points.
Is badminton played to 21 or 15 points?
As of October 2026, the current BWF system is 21 points per game. The new 15-point system is scheduled to become the international standard from January 4, 2027.
What happens at 20-20 in badminton?
Under the current 3×21 system, the game continues until one side has a two-point advantage. If the score reaches 29-29, the next point wins the game.
What happens at 14-14 under the new system?
Under the new 3×15 format, the side that first establishes a two-point lead after 14-14 wins the game. If the score reaches 20-20, the next point decides the game.
How many games are there in a badminton match?
A standard match is best of three games. The first player or team to win two games wins the match.
What is rally point scoring in badminton?
Rally point scoring means that the winner of every rally receives one point, regardless of which side served.
What is the service rule for an even score?
In singles, the server serves from the right service court when their score is even.
What is the service rule for an odd score?
In singles, the server serves from the left service court when their score is odd.
What is the difference between a fault and a let?
A fault ends the rally and awards the point to the opposing side. A let stops the rally and requires the rally to be replayed.
When will the new badminton 15-point system start?
The new BWF 3×15 scoring system is scheduled to come into effect internationally on January 4, 2027.
Why is badminton changing its scoring system?
The new system is intended to make matches faster and more consistent in duration while increasing intensity and potentially improving player welfare and scheduling.
Conclusion
Understanding the Badminton Rules and Scoring System is essential for both beginners and experienced players. The current international system uses best-of-three matches with 21 points per game, rally scoring, specific service-court rules and a two-point advantage requirement.
However, badminton is entering a significant transition period. The BWF has approved a 3×15 scoring system, scheduled to replace the current 3×21 international format from January 4, 2027.
For players and fans, learning both systems will be particularly important during the 2026-27 transition. The fundamental nature of badminton — serving, returning, attacking, defending and winning rallies — will remain the same, but the shorter scoring format is expected to make every rally even more important.
Disclaimer
This article is intended for general informational and educational purposes. Badminton rules can be updated by the governing authorities, and individual tournaments may have competition-specific regulations. Readers and players should refer to the latest official BWF Laws and the rules issued by their tournament organizer before relying on any rule for competitive play.
