Understanding NBA Scoring and Timing
The NBA uses a combination of scoring regulations, game-clock procedures and timeout rules to determine how games are played and administered. NBA Rule No. 5 establishes when baskets count, how many points are awarded, when periods begin and end, and how officials manage the clock during interruptions.
Each NBA regulation game consists of four 12-minute quarters. If the score is tied after the fourth quarter, the teams play additional five-minute overtime periods until a winner is determined.
The NBA also has specific procedures for shots released before the final buzzer, the final two minutes of a game, mandatory timeouts and the resumption of play following a stoppage.
Section I — Scoring
A. Legal Field Goals and Free Throws
A legal field goal or free throw is scored when the basketball enters the basket from above and remains in or passes through the net.
B. Two-Point Field Goals
A successful field goal attempted from on or inside the three-point line counts for two points.
A player's feet determine whether the attempt is classified as a two-point or three-point field goal.
C. Three-Point Field Goals
A successful field goal attempted from outside the three-point line counts for three points.
To qualify for a three-point attempt:
- The shooter must have at least one foot on the floor outside the three-point line before the attempt.
- The shooter may not be touching the floor on or inside the three-point line when beginning the attempt.
- After releasing the basketball, the shooter may touch the three-point line or land inside the two-point area without changing the value of the shot.
For example, a player may jump from behind the three-point line, release the basketball while airborne and land inside the arc. If the attempt is successful, it still counts for three points.
D. Accidental Baskets in the Wrong Hoop
If a player accidentally scores in the opponent's basket, the points are awarded to the opposing team.
The field goal is credited to the opposing player nearest the player whose actions caused the basketball to enter the basket.
E. Intentionally Shooting at the Wrong Basket
A player may not intentionally attempt a field goal at the opponent's basket.
This is a violation. The opposing team receives possession for a throw-in at the free throw line extended.
F. Free Throws
A successful free throw counts for one point.
G. Tipping in a Missed Free Throw
If an unsuccessful free throw remains live and a player legally taps the basketball into the basket, the successful tip-in counts for two points.
The field goal is credited to the player who tapped the basketball into the basket.
H. Discrepancies in the Official Score
If there is a discrepancy in the score that cannot be resolved, the running score is considered official.
NBA Scoring — Quick Reference
| Scoring Play |
Points |
Explanation |
| Free throw |
1 |
Successful attempt from the free throw line. |
| Two-point field goal |
2 |
Successful shot from on or inside the three-point line. |
| Three-point field goal |
3 |
Successful shot from outside the three-point line. |
| Legal tip-in of a missed free throw |
2 |
Credited to the player who tips the basketball into the basket. |
| Accidental basket in opponent's hoop |
2 or 3, as applicable |
Points awarded to the opposing team under the applicable scoring rule. |
| Intentional attempt at opponent's basket |
0 |
Violation; opposing team receives possession. |
Section II — Timing
A. Regulation Periods
Each NBA regulation period lasts 12 minutes.
A regulation game consists of four quarters, totaling 48 minutes of playing time.
B. Overtime Periods
Each overtime period lasts five minutes.
There is no limit on the number of overtime periods that may be played.
C. Halftime
The halftime intermission lasts 15 minutes.
D. Breaks Between Periods
The NBA provides different intermission lengths depending on the game and broadcast schedule.
- Local games: 2 minutes, 30 seconds between the first and second quarters, between the third and fourth quarters, and before overtime.
- National television games: 3 minutes, 30 seconds between the first and second quarters and between the third and fourth quarters.
- Before overtime: 2 minutes, 30 seconds, including national television games.
E. Replacing a Disqualified Player
A team is permitted 30 seconds to replace a disqualified player.
F. Two-Minute Period
The game is considered to be in its final two-minute portion when the game clock displays 2:00 or less.
G. Public Address Announcement
The public address announcer must announce when two minutes remain in each period.
H. Tenths of a Second
The game clock must display tenths of a second during the final minute of each period.
NBA Game Timing — Quick Reference
| Situation |
Time |
| Regulation quarter |
12 minutes |
| Regulation game |
48 minutes |
| Overtime period |
5 minutes |
| Halftime |
15 minutes |
| Local game quarter break |
2:30 |
| National TV quarter break |
3:30 |
| Break before overtime |
2:30 |
| Replace disqualified player |
30 seconds |
| Clock displays tenths |
Final minute of each period |
Section III — End of Period
A. When a Period Ends
Each period ends when the allotted playing time expires.
However, several exceptions apply to shots already in flight, fouls and other situations occurring as the game clock reaches zero.
B. Shot Released Before the Buzzer
If a field goal attempt is in flight toward the basket when time expires, the period does not conclude for purposes of determining the result of that shot until the basketball is made, missed or touched by an offensive player.
A successful shot released before the horn may therefore count even if the basketball enters the basket after the clock reaches zero.
C. Whistle Before Time Expires
If an official's whistle sounds before the game clock reaches 0.0, the period is not over.
Time must be restored to the game clock as required by the rules.
D. Basketball Touched After the Horn
If a shot is already in flight when the horn sounds and a defensive player subsequently touches the basketball, the goal counts if it is successful, subject to the applicable rules.
If an offensive player touches the basketball after the horn, the period has ended and the subsequent basket does not count.
E. Timeout Requested as Time Expires
If a timeout request is made at the same time the period expires, the period ends and the timeout is not granted.
F. Fouls at the End of a Period
If a foul is called on or by a player in the act of shooting, the period concludes after the foul is administered under the applicable rules.
Replay procedures may be used to determine whether the foul occurred before time expired.
G. Clock Showing 0.0
If the basketball is dead and the game clock displays 0.0, the period has ended even if the horn has not sounded.
Applicable replay exceptions may still require review.
Section IV — Tie Score and Overtime
If the score is tied at the conclusion of the fourth quarter, the game continues into overtime.
Each overtime period lasts five minutes.
Teams do not switch baskets for overtime.
The intermission before an overtime period lasts 2 minutes, 30 seconds.
If the score remains tied at the end of overtime, another five-minute overtime period is played. This process continues until one team finishes an overtime period with more points than its opponent.
Each team is entitled to two timeouts during every overtime period.
Section V — Stoppage of Timing Devices
A. Official's Whistle
The timing devices are stopped whenever an official blows the whistle.
Common reasons for stopping the game clock include:
- Personal or technical fouls.
- Traveling, out-of-bounds and other violations.
- Jump-ball situations.
- Timeouts.
- Injuries or unusual delays.
- Other official suspensions of play.
B. Clock Stoppage Following a Made Basket
During the final minute of the first, second and third quarters, the game clock stops following a successful field goal.
During the final two minutes of the fourth quarter and the final two minutes of each overtime period, the game clock also stops following a successful field goal.
These rules are especially important in close games because they allow teams to organize their next possession without the game clock continuing to run immediately after a basket.
C. Player Equipment
Officials may not use official time merely to allow a player to change or repair equipment.
Section VI — Timeouts: Mandatory and Team
A. Team Timeout Allowances
Each NBA team is entitled to seven charged timeouts during regulation play.
A team may use no more than four timeouts during the fourth quarter.
Each team is limited to two timeouts after the later of the three-minute mark of the fourth quarter or the conclusion of that quarter's second mandatory timeout.
B. Overtime Timeouts
Each team receives two timeouts in every overtime period.
Timeout allowances are administered separately for each overtime period.
C. Mandatory Timeouts
Two mandatory timeouts are required in each regulation quarter.
If neither team has called a timeout before the clock reaches 6:59, the official scorer takes a mandatory timeout at the next dead ball and charges it to the home team.
If no additional timeout has been taken before 2:59, another mandatory timeout is taken at the next dead ball and charged to the team that was not previously charged.
The scorer must notify the appropriate team when it has been charged with a mandatory timeout.
D. Timeout Durations
Mandatory timeouts last 2 minutes, 45 seconds for local games and 3 minutes, 15 seconds for nationally televised games.
Additional team timeouts in a period beyond the mandatory timeouts last 1 minute, 15 seconds.
E. When a Timeout May Be Requested
A player participating in the game or the head coach may request a timeout when the basketball is dead or when a player on that team has control of the basketball.
A timeout request made when these conditions are not satisfied must be ignored.
F. Substitutions During Timeouts
Both teams may make substitutions during a granted timeout, subject to the NBA's player eligibility rules.
G. Questioning a Rule Interpretation
A timeout may be requested to question a rule interpretation.
If the correction is sustained, the team is not charged with a timeout.
H. Advancing the Basketball
During the final two minutes of the fourth quarter or an overtime period, the offensive team may have the option to advance the basketball to the 28-foot hash mark in the frontcourt following a qualifying timeout.
The option generally applies when the offensive team has possession in the backcourt and has not advanced the basketball after securing possession.
Alternatively, the team may resume play at the designated out-of-bounds location.
When the basketball is inbounded from the frontcourt hash mark, it may be passed into either the frontcourt or backcourt, subject to the applicable eight-second count.
The rule contains additional restrictions and procedures, including circumstances in which a second timeout is required to preserve the advancement option.
I. Defensive Team Timeout Restrictions
The defensive team may not receive a timeout during an official's suspension of play.
An exception applies to certain infection-control situations.
J. Injuries and Timeouts
If a player is injured because of an opponent's flagrant foul or unsportsmanlike act, play resumes when conditions are safe without charging a timeout solely for the resulting injury delay, unless a mandatory timeout is due.
If an injured player cannot be safely removed or play cannot resume at the end of a timeout, the officials administer the situation according to the applicable injury and safety provisions.
K. Excessive Timeouts
If a team requests a timeout beyond its available allowance, the timeout is granted and a technical foul is assessed.
After the timeout, the opposing team receives possession for a throw-in nearest the location where play was interrupted.
L. No Timeouts Remaining and an Injured Player
If a team has no timeouts remaining and an injured player cannot be removed during a stoppage, the team is not charged with an excessive timeout solely because play must remain stopped until conditions are safe.
NBA Timeout Rules — Quick Reference
| Timeout Rule |
Current NBA Regulation |
| Team timeouts during regulation |
7 |
| Maximum in fourth quarter |
4 |
| Late fourth-quarter restriction |
2 after the applicable three-minute/mandatory-timeout threshold |
| Team timeouts per overtime |
2 |
| Mandatory timeouts per regulation quarter |
2 |
| First mandatory timeout threshold |
6:59 |
| Second mandatory timeout threshold |
2:59 |
| Mandatory timeout, local game |
2:45 |
| Mandatory timeout, national TV game |
3:15 |
| Additional team timeout |
1:15 |
| 20-second timeouts |
Eliminated |
| Excessive timeout |
Technical foul; possession awarded to opponent |
Section VII — Timeout Requests
A. Inadvertent Timeout Signal During Live Play
If an official mistakenly signals a timeout in response to a request by the defensive team while play is in progress, play is suspended.
The team in possession resumes with a sideline throw-in nearest where the basketball was located when the signal was given.
The game clock and shot clock remain at their previous readings.
B. Inadvertent Signal During a Shooting Attempt
If an official mistakenly signals for a timeout during the act of shooting but before the basketball is released, the result depends on the outcome of the attempt.
- Successful field goal or free throw: The points count.
- Unsuccessful field goal: The offensive team receives a sideline throw-in nearest where the basketball was located.
- Unsuccessful free throw: A disconcertion violation is called and a substitute free throw is awarded.
C. Inadvertent Signal After the Basketball Is Released
If an official mistakenly signals for a timeout after the basketball has been released on a successful field goal or free throw, the points count.
If the basketball is loose or the released attempt is unsuccessful and would otherwise remain live, play resumes with a jump ball at the center circle between any two opponents.
D. Completing a Timeout
When a team is granted a timeout, play cannot resume until the timeout clock has expired.
The subsequent throw-in normally occurs nearest the location where play was suspended. If the basketball was live when the timeout was granted, the throw-in takes place on the sideline.
E. Timeout Requests Near a Boundary Line
A player may not be granted a timeout when both feet are in the air and any part of the player's body has broken the vertical plane of a boundary line.
The rule also applies to the midcourt line, subject to the exception involving throw-ins during the final two minutes of the fourth quarter or overtime.
F. Timing of a Timeout Request
A timeout may be granted only at the time it is requested.
Officials cannot retroactively grant a timeout that was not legally available at the time of the request.
Section VIII — Time-In
A. Missed Free Throw
When a free throw is unsuccessful and the basketball remains live, the game clock starts when the missed free throw is legally touched by a player.
B. Throw-In From Out of Bounds
When play resumes with a throw-in, the game clock starts when the basketball is legally touched by a player within the playing area.
C. Jump Ball
When play resumes with a jump ball, the game clock starts when the basketball is legally tapped.
These procedures ensure that playing time is not consumed before the basketball has legally entered live action.
Historical NBA Timeout Rules
The original NBAHoopsOnline version of this page preserved several timeout rules that were once part of the NBA rulebook but are no longer used.
20-Second Timeouts
For many years, the NBA allowed teams to request short 20-second timeouts in addition to regular timeouts.
Under the older system, teams generally received one 20-second timeout per half, with restrictions on the number of players who could be substituted.
These short timeouts were eliminated as part of the NBA's timeout reforms for the 2017-18 season.
100-Second Regular Timeouts
The old rulebook referred to regular timeouts lasting 100 seconds. The current rules instead distinguish between mandatory timeouts and additional team timeouts, with durations that also depend on whether a game is televised nationally.
Changes to Overtime Timeouts
The older rulebook permitted three timeouts per overtime period. The current NBA rule allows two timeouts for each team during every overtime period.
Late-Game Timeout Restrictions
The NBA has also revised the number of timeouts teams may use late in the fourth quarter. These changes were intended in part to reduce interruptions during the closing minutes of games.
Preserving these older provisions as historical information helps illustrate how NBA game administration has changed over time.
Old NBA Rules vs. Current NBA Rules
| Rule |
Older NBAHoopsOnline Page |
Updated NBA Rule |
| 20-second timeout |
One per half |
Eliminated |
| Regular timeout duration |
100 seconds |
75 seconds for additional team timeouts; longer mandatory timeouts |
| Overtime timeouts |
3 per team |
2 per team |
| Quarter breaks |
100 or 130 seconds |
2:30 or 3:30 depending on broadcast |
| Overtime intermission |
100 seconds |
2:30 |
| Mandatory timeout lengths |
Older regular-timeout system |
2:45 local; 3:15 national TV |
| Late-game timeout restriction |
3 during final two minutes |
2 after the applicable late-fourth-quarter threshold |
| Frontcourt advancement |
Midcourt-based procedure |
28-foot frontcourt hash mark with updated conditions |
| Two-minute announcement |
Regulation and overtime |
Each period |
History of NBA Scoring and Timing
Scoring and timing regulations have played an important role in the development of professional basketball. While the NBA has retained the basic structure of four 12-minute quarters, other rules have changed significantly as the league has evolved.
The introduction of the 24-second shot clock in the 1954-55 season fundamentally changed the pace of NBA games. Before the shot clock, teams could hold the basketball for extended periods, sometimes slowing games to a crawl. The new rule required teams to attempt a shot within a defined period and helped create the faster style of basketball associated with the modern NBA.
The three-point line was introduced for the 1979-80 season, adding a new scoring opportunity and eventually transforming offensive strategy. Over time, the three-point shot became a central element of NBA offenses.
The NBA has also experimented with the distance of the three-point line. It shortened the arc for the 1994-95 through 1996-97 seasons before restoring the longer distance for the 1997-98 season.
Instant replay and more precise timing equipment have helped officials review whether shots were released before the buzzer and whether fouls occurred before time expired. These improvements have become particularly important during close games and playoff contests.
Timeout rules have also evolved. The NBA's 2017-18 reforms eliminated 20-second timeouts, standardized the number of available team timeouts and changed the procedures used during the closing minutes of games.
These developments show how scoring, timing and game administration have adapted while preserving the basic structure of NBA basketball.
Frequently Asked Questions About NBA Scoring and Timing
How long is an NBA game?
An NBA regulation game consists of four 12-minute quarters, totaling 48 minutes of playing time. Halftime, quarter breaks, timeouts, fouls and other stoppages make the actual elapsed time considerably longer.
How long is NBA overtime?
Each overtime period lasts five minutes. Additional overtime periods are played until the tie is broken.
How many points is a three-pointer worth?
A successful field goal from outside the three-point line counts for three points.
Can a player land inside the three-point line and still score three points?
Yes. If the player legally begins the attempt from outside the arc and releases the basketball before landing, the shot may count for three points.
What happens if an NBA player accidentally scores in the wrong basket?
The points are awarded to the opposing team and credited according to the NBA's official scoring procedure.
How many timeouts does an NBA team get?
Each team receives seven timeouts during regulation, subject to fourth-quarter restrictions, and two timeouts in each overtime period.
Does the NBA still have 20-second timeouts?
No. The NBA eliminated 20-second timeouts beginning with the 2017-18 season.
Does the NBA clock stop after a made basket?
Yes, during the final minute of the first three quarters and during the final two minutes of the fourth quarter and each overtime period.
Does a basket count if the basketball is still in the air when the buzzer sounds?
Yes, provided the shot was legally released before time expired and no subsequent action invalidates the basket.
Can an NBA game end in a tie?
No. If the score remains tied, additional overtime periods are played until a winner is determined.
Official NBA Rules and References
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