Basketball Fouls Explained: Personal, Technical, Flagrant, the Bonus and Fouling Out

A foul in basketball is illegal contact with an opponent, or unsporting conduct, charged against a player. Much of the confusion about fouls comes from the fact that one whistle moves three separate counters at once: it decides what the fouled team gets, it adds one to the fouling player's personal total, and, for a foul by the defence, it adds one to that team's total for the quarter. Keep those three apart and most foul situations make sense.

Where this article quotes NBA numbers, they are from the league's 2025-26 rulebook, the most recent one it had posted by 2 October 2026. FIBA numbers are from the 2026 edition of the international rules, in force since 1 October 2026, which rewrote the most serious categories of foul.

The three counters

What the fouled team gets

• A foul on a player who is not shooting gives the fouled team the ball out of bounds, unless the fouling team is in the penalty.
• A foul on a shooter whose shot misses gives two free throws, or three if it was a three-point attempt.
• A foul on a shooter whose shot goes in lets the basket count and adds one free throw.
• An offensive foul gives the ball to the defence and no free throws.

The fouler's personal total

The limit is six in the NBA and five under FIBA rules. The two books also count differently: under FIBA rules a technical foul by a player "shall be charged as a player foul", so technical, disruptive and flagrant fouls all move a player toward five. NBA technical fouls are a separate category with a separate ceiling, which is described below.

The team total, or "the bonus"

Both books allow a team four fouls a quarter. From the fifth, every defensive foul on a player who is not shooting sends that player to the line for two free throws. That is what commentators mean by a team being "in the bonus" or "in the penalty".

What turns contact into a foul

Contact alone is not the test. FIBA's rules build the whole subject on the "cylinder principle": each player is entitled to the space they occupy and the space directly above it. The player who leaves that space and causes contact is responsible for it. The NBA's rulebook states the same idea as a list of what a player may not do: hold, push, charge into, or impede an opponent by extending a hand, arm, leg or knee, or by bending into an abnormal position.

Block or charge

The block-or-charge call starts plenty of arguments, and both rulebooks decide it with the same question: did the defender get there first, legally?

Under FIBA's wording, a defender has an initial legal guarding position when facing the opponent with both feet on the floor. From there the defender may stay still, jump straight up, or move sideways or backwards. If the attacker then runs into the defender's torso, it is a charge. If the defender slides into the path late, leans in, or makes contact with a hip or leg, it is a block. A defender guarding a player without the ball must also give that player time and distance to stop, and never less than one normal step.

The area under the basket

Both books mark an area right under the ring where a help defender cannot draw a charge. In the NBA it is a 4-foot arc measured from the centre of the basket; a secondary defender standing inside it cannot be credited with a charge when the attacker takes a path directly to the rim. FIBA's no-charge semi-circle has a radius of 1.30 metres and works the same way for an airborne attacker who shoots or passes.

Fouls with extra penalties

Technical fouls

Technical fouls punish conduct rather than contact. In the NBA they cost one free throw, and the team that had the ball keeps it. A player or coach may receive at most two technicals for unsportsmanlike acts, and the second means ejection. Some technicals are explicitly not unsportsmanlike: delay of game, defensive three seconds and flopping, for example.

FIBA's 2026 rules split technical fouls into two categories. Category 1 covers behaviour, such as disrespecting officials, taunting, waving a hand near an opponent's eyes or faking being fouled, and it counts toward disqualification. Category 2 covers administrative offences, such as delaying the game or hanging on the ring, and it does not. Either kind costs one free throw.

Flagrant fouls

The NBA has two levels. A Flagrant 1 is contact the officials judge "unnecessary"; a Flagrant 2 is contact judged "unnecessary and excessive". Both give two free throws and possession, and a foul must be confirmed by instant replay before it can be ruled flagrant. A Flagrant 2 means ejection, and so does a second Flagrant 1 in the same game.

FIBA's 2026 flagrant foul is one of two foul types that replace the former unsportsmanlike foul. It covers contact that is not a legitimate basketball play, reckless or dangerous contact, and excessive hard contact. The penalty is free throws followed by a throw-in from the frontcourt.

Stopping a fast break

Both leagues penalise the deliberate foul that kills a counter-attack, in different ways:

• NBA transition take foul. A defender who fouls without making a play on the ball during a transition opportunity concedes one free throw, which any player on the court may take, plus possession. It does not apply in the last two minutes of the fourth quarter or overtime. A foul that denies a clear path to the basket costs two free throws plus possession.
• FIBA disruptive foul. New for 2026, it covers unnecessary contact without a legitimate attempt to play the ball to stop a fast break, or to stop the game clock or shot clock at the end of a quarter, and illegal contact from behind or the side on an attacker with no defender between them and the basket. The penalty matches a flagrant foul's, free throws and a frontcourt throw-in, but it does not count toward disqualification.

When a player is sent off

Under FIBA rules a player is disqualified for two flagrant fouls, two category 1 technical fouls, or one of each, and FIBA's summary of the changes says the new split exists because the old system, under which two technicals, two unsportsmanlike fouls or one of each disqualified a player, appeared "overly strict". Violence ends a player's game in both books: FIBA calls it a disqualifying foul, and the NBA requires ejection for punching and fighting fouls.