American Football Rules IFAF Approved Ruling 10-2-3:IV

IV. Team A’s successful field goal attempt is snapped from Team B’s 30-yard line, and a Team B player commits a personal foul at the 20-yard line during the kick. RULING: Team A may void the score and have Team B penalised at the previous spot or accept the score and have Team B penalised on the ensuring kickoff (Rule 10-2-5-d). [Cited by 10-2-3-b-1, 10-2-3-b-4]