Badminton Rules 2026

A badminton match is currently the best of three games to 21 points, using rally point scoring — every rally wins a point, regardless of who served. That's changing: the BWF confirmed a new 3×15 scoring system in April 2026, taking effect from Week 1, 2027. Until then, the 21-point system below is what's actually played in every competition. Where the serve trips people up either way is positioning: the server's score decides which side of the court they serve from, and doubles adds a partner-rotation rule that catches out most club players at some point. This guide covers current scoring, the incoming 2027 change, serving, and the court differences between singles and doubles, written by Central Sports.

Current scoring rules (in effect through 2026)

• Every rally is worth a point, whether you served or not — this is rally point scoring, not the older side-out system.

• Games are played to 21 points. You must win by at least 2 clear points (21–19, 22–20).

• If the score reaches 20–20, play continues until one side leads by 2.

• If the score reaches 29–29, the next point wins the game outright — 30 is the hard cap.

• A match is the best of three games. Winning a game earns you the first serve in the next one.

• Players change ends after the first game, and again after the second if a third is needed. In that third game, ends change as soon as either side reaches 11 points.

• There's a 60-second break when the leading score in a game reaches 11, and a 2-minute break between games.

• A coin toss (or shuttle spin in casual play) decides who serves first, or which end each side starts on — the winner picks one, the other side gets what's left.

Scoring is changing in 2027 — the 3×15 system

The BWF confirmed amendments to the Laws of Badminton in April 2026, introducing a new 3×15 scoring system for both badminton and Para badminton. It becomes the standard scoring system from Week 1, 2027 (4 January) — the rules above remain what's actually played until then. Here's what changes:

• Matches stay best of three games — that doesn't change.

• Each game is played to 15 points, replacing the current 21-point target.

• Rally-point scoring is unchanged — a point is still awarded on every rally.

• At 14-all, the game is decided by a 2-point lead, the same principle as the current 20-all rule.

• A maximum cap of 21 points applies — at 20-all, the next point wins the game outright.

• In the deciding third game, ends change when a side first reaches 8 points (down from 11, scaled to the shorter game).

• The mid-game interval trigger moves to 8 points (down from 11) for the same reason.

• The 2-minute interval between games, and the rule that the game winner serves first next game, are both unchanged.

• 3×21 (the current system) is retained as an approved alternate — Member Associations, clubs, leagues, and domestic organisers can choose to keep playing to 21 if they prefer.

Nothing about serving, faults, lets, or court dimensions changes under 3×15 — only the scoring target and the two interval/end-change thresholds move.

Singles serving rules

In singles, where you serve from is decided entirely by your own score:

• Even score (0, 2, 4…): serve from the right service court.

• Odd score (1, 3, 5…): serve from the left service court.

You keep serving for as long as you keep winning rallies. Lose a rally and the serve — and the point — passes to your opponent.

For a serve to be legal:

• Contact with the shuttle must be below your waist (the lowest rib, by BWF definition).

• The racket shaft must point downward at the moment of contact.

• Both feet stay in contact with the court, inside the service box, until the shuttle is struck.

• The serve must be one continuous forward motion — no pause, no double action.

• The shuttle must land diagonally in the opponent's service court, inside the sidelines and short service line, but the full-length back boundary is in play (singles doesn't use the shorter doubles service line).

Doubles serving rules

The scoring and basic serve mechanics are the same, but doubles adds a rotation rule between partners that's the single most common source of confusion in club play:

• Service position still follows the even/odd rule — but it's the serving side's score, not the individual server's, that decides right or left.

• If the serving side wins the rally, the same player serves again, switching to the opposite service court.

• If the serving side loses the rally, the serve passes to the opponent standing in the correct diagonal service court — not automatically to their partner.

• Each partner only serves once per turn their side holds the serve: the first server keeps going until their side loses a rally, at which point serve passes to the other pair entirely — it does not rotate to your own partner first.

• The serving boundary is narrower at the back: the shuttle must land short of the doubles long service line (0.76m in from the back boundary), though the full width sidelines are in play. Once the serve is returned, the entire court — including the back tramlines — comes into play for both singles and doubles rallies.

Singles vs doubles court dimensions

The net height and overall length are identical — the difference is entirely in width, and in how far back you're allowed to serve.

Common service faults

• Contact above the waist, or the racket head pointing upward at contact

• Feet lifting off the court, touching a line, or moving before the shuttle is struck

• Serving to the wrong service court for the current score

• A double-action or hesitant serve motion

• The shuttle landing outside the correct service box, or in the net

Lets

If the serve catches the net but still lands correctly in the service court, it's a let and the point is replayed — not a fault. Lets are also called for outside interference, such as a shuttle drifting in from another court or a receiver who wasn't ready and clearly signalled it before the serve.

FAQs

How many points do you need to win a badminton game?

Currently 21, with a 2-point lead (cap at 30). From January 2027, that moves to 15 points, with a 2-point lead from 14-all and a cap at 21, under the BWF's new 3×15 system.

When does badminton switch to 15-point scoring?

The 3×15 system becomes the standard from Week 1, 2027 (4 January). It was confirmed by the BWF in April 2026. Until then, matches are played to 21 points as normal, and even after the switch, clubs and leagues can choose to keep playing to 21 under the retained alternate system.

Does the serve alternate sides every point in badminton?

Only relative to your own score's parity — even scores serve right, odd scores serve left. It's not a simple side-to-side alternation independent of score.

What's the biggest difference between singles and doubles serving?

Doubles is narrower at the back for serving (the long servic line cuts the box short) but wider overall, and the serve only passes to the opposing side as a whole — not automatically between your own team's players.

Do you need different equipment for singles and doubles?

The court and net are the same racket, shuttle and grip setup either way — see our shuttlecock and racket ranges if you're gearing up for either format.

Related guides

• Badminton Shoes Buying Guide

• Badminton Grips Buying Guide