Every whistle in basketball is either a foul or a violation, and the difference decides whether someone goes to the line or the ball simply changes hands. Here's how both work in the NBA and the NBL, including the rule changes for the new season.
A foul is illegal contact or unsporting conduct. A violation is a procedural breach, like travelling or a shot clock expiry, with no contact needed. Fouls can lead to free throws and count toward a player fouling out. Violations just hand the other team the ball.
Fouls vs Violations: The Key Difference
Two quick examples show the split.
- A defender hits a shooter's arm on a jump shot: foul. The shooter gets free throws and the defender picks up a personal foul.
- A ball-handler takes three steps after picking up their dribble: violation. Turnover, the other team inbounds, nobody shoots.
Types of Fouls in Basketball
Most fouls are routine contact. A few carry heavier penalties and can get players sent off.
Personal Fouls
A personal foul is illegal contact during live play: pushing, holding, tripping, hand-checking or hitting an arm while going for the ball. Away from a shot, the usual penalty is a sideline inbound. If the fouling team is in the bonus (more on that below), it's two free throws instead.
The NBA's 2004-05 crackdown on hand-checking (keeping a hand on the ball-handler) is a big reason the modern game is so open.
Shooting Fouls and the And-One
Foul a player in the act of shooting and they go to the line. A missed two-point attempt earns two free throws, a missed three earns three. If the shot drops anyway, the basket counts and the shooter gets one bonus free throw, the famous "and-one."
FIBA's 2026 rules define the shooting motion more tightly: on a jump shot it starts when the shoulders and ball begin moving up toward the basket.
Offensive Fouls: Charge vs Block
The most argued whistle in the sport. If the defender has established a legal guarding position (both feet down, facing the attacker) before contact, the attacker is called for a charge.
If the defender is still moving into the path, or slides under a player already in the air, it's a blocking foul on the defence.
Other offensive fouls include moving or illegal screens and pushing off to create space. A charge is a turnover plus a personal foul on the attacker, and no free throws are awarded.
Loose Ball Fouls
Fouls when nobody has possession, usually wrestling for a rebound. They count as personal and team fouls, so they can send the other side to the line in the bonus.
Technical Fouls
Technicals cover conduct rather than contact: abusing officials, taunting, hanging on the rim, delay of game, too many players on the floor. In the NBA a defensive three-second call and a flop are also penalised as technicals.
- NBA penalty: One free throw (any player can take it), and the team in control of the ball keeps it.
- Two unsportsmanlike technicals in one NBA game means an ejection. Delay of game, defensive three seconds and flopping techs don't count toward that ejection.
- NBA players are suspended for one game on their 16th technical of the regular season, then again for every second technical after that.
- In FIBA and the NBL, a technical counts toward a player's five-foul limit and the team foul total, which the NBA doesn't do.
Flagrant Fouls (Flagrant 1 and Flagrant 2)
A flagrant foul is contact that goes beyond a basketball play. The NBA uses two tiers.
- Flagrant 1: Unnecessary contact. Two free throws plus possession for the fouled team.
- Flagrant 2: Unnecessary and excessive contact. Two free throws, possession, and the offender is ejected.
FIBA has now adopted the flagrant name too. Under FIBA's 2026 rules, which the NBL has used since October 1, the old unsportsmanlike foul has been replaced by two new fouls: the disruptive foul and the flagrant foul.
Both carry free throws plus possession. A player is disqualified after two flagrant fouls, two Category 1 technicals, or one of each.
Clear Path Fouls
A clear path foul happens in the NBA in transition, when the ball is ahead of the tip of the circle in the backcourt and there is no defender between the attacker and the basket at the time of the foul.
The attacker must have the ball, or a pass to them must already be released. It can't be called during a shot or when the defender is trying to intercept the pass.
These criteria come from the NBA's 2018-19 revision of the rule. The penalty is two free throws plus possession.
Transition Take Fouls
The take foul is the deliberate grab to stop a fast break before it starts. From 2022-23, the NBA made it costlier: one free throw (any player on the court can take it), the offence keeps the ball, and the defender gets a personal foul.
The heavier penalty doesn't apply in the last two minutes of the fourth quarter or overtime, so teams can still foul to stop the clock late.
FIBA's new disruptive foul does the same job. Fouling to kill a transition without a legitimate play on the ball brings free throws plus possession, so the NBL punishes the tactic too.
How Many Fouls to Foul Out
- NBA: Six personal fouls. The sixth is a disqualification for the rest of the game. Technicals don't count toward the six.
- NBL, FIBA and WNBL: Five fouls, and in FIBA that includes technical fouls.
NBA games run 48 minutes and FIBA games 40, but five fouls in 40 minutes is still a tighter leash than six in 48.
A player can also be ejected without fouling out: a Flagrant 2 or two unsportsmanlike technicals in the NBA, or two flagrants, two Category 1 technicals or one of each under FIBA. A player with five NBA fouls, or four in the NBL, is said to be "in foul trouble" and often sits.
Team Fouls and the Bonus
Every defensive personal foul also counts against the team. Reach the limit and the opposition is "in the bonus," meaning every further defensive foul sends them to the line for two shots, shooting or not.
- NBA: The bonus kicks in on the fifth team foul in a quarter, or on the second team foul in the last two minutes of a quarter if the team hadn't reached five. In overtime it's the fourth foul, or the second in the last two minutes.
- NBL and FIBA: After four team fouls in a quarter, every further team foul brings two free throws. Fouls reset each quarter, and overtime counts as an extension of the fourth.
Worked example: An NBL team commits its fourth foul with six minutes left in the third quarter. Every defensive foul for the rest of that quarter, even a ticky-tack reach-in near halfway, is two shots. That's why defenders suddenly play with their hands up.
Free Throw Rules
- A free throw comes from behind the line 4.6 metres (15 feet) from the backboard.
- Time limit: 10 seconds to release the shot in the NBA, 5 seconds under FIBA.
- Lane violations: Players lined up along the key can't enter until the ball leaves the shooter's hand. If the defence enters early and the shot misses, the shooter gets another go. If the offence enters early on a make, the point doesn't count.
Types of Violations in Basketball
Violations are all about the ball, the clock or the court. The penalty is nearly always the same: a turnover.
Travelling
Travelling means moving the pivot foot illegally or taking too many steps while holding the ball. Both the NBA and FIBA allow a "gather" (or zero) step, the step taken while catching the ball or finishing a dribble, before the two legal steps.
That explains Eurosteps that look like three steps on TV but are legal. Once a pivot foot is set, it can't be lifted and put back down before a pass or shot.
Double Dribble and Carrying
A double dribble is dribbling, holding the ball with one or both hands, and then dribbling again. Dribbling with two hands at once is also a double dribble.
Carrying (or palming) is when the hand gets under the ball mid-dribble and the ball comes to rest before the next bounce. It's called less than purists would like, but it's still in the book.
Three-Second Rules
- Offensive three seconds: an attacker can't stay in the key for more than three seconds while their team has control in the frontcourt. Applies in the NBA and FIBA.
- Defensive three seconds (NBA only): a defender can't stay in the lane for more than three seconds without actively guarding someone. Penalty: technical foul. FIBA has no defensive three-second rule, so NBL teams can park a big man in the paint.
Five-Second Rules
- Inbounds: Five seconds to throw the ball in after receiving it from the referee (NBA and FIBA).
- Closely guarded (FIBA): A player holding the ball while closely guarded must pass, shoot or dribble within five seconds.
- Back to the basket (NBA): An attacker below the free throw line extended can't dribble with their back or side to the basket for more than five seconds.
Eight-Second and Backcourt Violations
A team has eight seconds to get the ball over halfway in both the NBA and FIBA. Once it's in the frontcourt, the attacking team can't be the last to touch it before it goes back over halfway and then touch it first again in the backcourt.
That's the over-and-back (backcourt) violation. If a defender knocks it back, there's no violation.
24-Second Shot Clock
Teams get 24 seconds to shoot in the NBA and NBL. The shot has to leave the shooter's hand before the clock expires and then hit the ring, so an airball at the horn is a violation.
After an offensive rebound that hits the ring, the clock resets to 14 seconds, which the NBA adopted in 2018-19 and FIBA uses as well.
Goaltending and Basket Interference
Goaltending is touching a shot on its downward flight when it's above the rim and has a chance to go in.
Defensive goaltending means the basket counts automatically. If the geometry around the ring has you curious, it is worth brushing up on the standard basketball hoop height.
Basket interference covers touching the ball while it's on the ring or inside the imaginary cylinder above it, or touching the ring or net in a way that affects the shot.
Here the codes differ. In the NBA, the ball is untouchable while it's in the cylinder. Under FIBA rules, once the shot has hit the ring the ball becomes playable again, so NBL players can tip it off the rim in situations an NBA player can't.
Offensive goaltending or interference cancels the basket and gives the ball to the defence.
Kicking the Ball, Out of Bounds and Lane Violations
Deliberately kicking the ball is a violation, and a defensive kick hands the ball back to the offence.
A ball (or player holding it) touching the line or beyond is out of bounds, with possession to the team that didn't touch it last. Lane violations are covered under free throws above.
NBA and NBL Rule Changes for the New Season
NBA 2025-26 changes (still in force):
- On out-of-bounds coach's challenges, the Replay Center official (not the crew chief) now decides whether a foul should have been called on the play.
- The NBA also changed how some end-of-quarter heaves are recorded in the stats.
NBA 2026-27: There are no new playing rules on fouls this season. Instead, the NBA's officiating points of emphasis target offensive push-offs, illegal screens, flopping, off-ball clutching and grabbing, and contact on straight-line drives, which tends to mean extra whistles early in the season.
NBL 2026-27 (FIBA 2026 rules): Disruptive and flagrant fouls replace unsportsmanlike fouls, technicals split into Category 1 (dissent, taunting, offensive language, foul simulation), which counts toward ejection, and Category 2 (minor offences like delay of game), which doesn't, and the shooting motion is defined more tightly.
Instant replay can now check whether goaltending or basket interference occurred after a foul at any stage of the game (also via a Head Coach's Challenge), and in the last two minutes of the fourth quarter and overtime, whether the ball had left the passer's hands on a throw-in when a defensive foul happened.
For more on how extra periods work, see our guide to NBA overtime rules.
How Fouls Affect Basketball Betting
Fouls shape player props more than most punters realise. A centre who picks up two early fouls might sit most of the first half, which can wreck a points or rebounds line before he's had a fair go.
Check which players foul a lot, and which positions tend to collect fouls (rim protectors and bigs guarding the post).
Free throws drive totals. Teams in the bonus early in quarters score at the line without running the clock much, and a whistle-heavy crew can push a game toward the overs.
Late in close games, intentional fouling adds stops and free throws, which can lift a total in the final two minutes, and that matters for NBA handicap betting as well.
The NBA vs NBL difference counts here too. Five fouls in 40 minutes means NBL foul trouble bites earlier, and the four-foul team limit puts sides in the bonus sooner.
For a wider look at the markets, see our guide on how to bet on the NBA or head straight to betting on the NBA.
Foul trouble and free throw volume feed directly into totals and player props, so once the injury report and referee assignments are out, they're worth weighing against the latest NBA odds.
Basketball Fouls and Violations FAQ
What is the difference between a foul and a violation in basketball?
A foul is illegal contact or unsporting conduct, charged to a player and the team, and it can lead to free throws. A violation is a breach of the rules on handling, time or court position, like travelling or a shot clock expiry, and it results in a turnover.
How many fouls does it take to foul out in the NBA?
Six personal fouls. In the NBL and FIBA competitions, it's five, and technical fouls count toward that five. NCAA college basketball also uses five.
What is a flagrant foul?
Contact that goes beyond a normal basketball play. In the NBA, a Flagrant 1 gives two free throws and possession, while a Flagrant 2 adds an ejection. Under FIBA's 2026 rules, which the NBL has used since October 1, there is also a flagrant foul, with two flagrants leading to disqualification.
What does "in the bonus" mean?
The opponent has reached the team foul limit for the period, so every further defensive foul brings two free throws. That's the fifth team foul per quarter in the NBA (or the second in the final two minutes) and the fifth in FIBA and the NBL.
