Base Attack Bonus

Base Attack Bonus (BAB) defines a creature's basic ability to land a damaging hit on an enemy if no other bonuses or modifiers would play a role.

A character's BAB increases with higher levels automatically depending on his or her Class.

To see how the Base Attack Bonus affects combat, see Combat.

Every six points of Base Attack Bonus will allow the character to perform a second attack when attacking as a Full-Round Action. This second attack is made at an Attack Bonus five points lower than the first attack, and should a character gain a high enough Base Attack Bonus for a third attack, it’s made five points lower than the second attack, and ten points lower than the first. For example, a 6th-Level Fighter has a Base Attack Bonus of +6/+1; their primary attack has a +6 Base Attack, while their second attack receives a +1 Base Attack Bonus.