Year (Source) new or changed laws (proposing club, if known)
1847 and following years (Eton Field Game) „Sneaking“ is when the attacking player is between the ball and the opposing goal and there are three or fewer opponents in front of him/her. Enabled a combination game here early on.
1858 (Sheffield FC) Someone who stand behind the touch line and goal line, is offside.
1858 (Harrow Football) Offside was everyone who is closer to the opponent goal line than the ball.
1862 (The Simplest Game) Offside was everyone who is closer to the opponent goal line than the ball.
1862 (Blackheath FC) Offside was everyone who is closer to the opponent goal line than the ball.
1863 (Shrewsbury School) Offside was everyone who is closer to the opponent goal line than the ball.
1863 (Cambridge University) Offside was everyone who is closer to the opponent goal line than the ball.
1863 (FA) Offside was everyone who is closer to the opponent’s goal line than the ball.
1866 (FA) Offside was everyone who is closer to the opponent’s goal line than the ball, if less than three opposing players were standing in front of the attacking player. Those who were offside were not allowed to participate in the game, i.e. not to touch the ball or prevent anyone from touching the ball. The reason for this change: The principle of justice.
1867 (Sheffield FA) Offside was everyone who is closer to the opponent’s goal line than the ball, if less than two opposing players were standing in front of the attacking player at the moment of passing.
1873 (FA) Added: „[…] at the moment of passing the ball“ (Uxbridge FC).
1873 (FA) In case of a goal kick no offside rule applies (Uxbridge FC).
1874 (FA) In case of an infringement of the law, the game restarts with an (indirect) free kick for the opposing team (Harrow Chequers).
1879 (FA) In case of a throw-in the offside law applies (Wanderers FC; Old Harrovians FC).
1882 (FA) If the ball comes from the opponent an offside position is impossible. (Old Etonians, Finchley).
1907 (IFAB) In the own half of the team an offside position is impossible.
1920s (DFB, maybe IFAB) An offside position is not possible for corner kicks, throw-ins (since 1920) and goal kicks.
1924 (IFAB) It is not illegal to be offside as long as one does not interfere with the game (FA).
1924 (IFAB) A player is not offside if at least two of his opponents are closer to his own goal line than he or she is (SFA).
1971 (IFAB) The FA receives IFAB permission to test in games that an offside position is only possible in the penalty area.
1978 (IFAB) If a free kick is taken for a team in its own goal area, the free kick may be taken from any place within the goal area (FA).
1990 (IFAB) A player is not offside if he or she is not closer to the goal line of his/her opponents than at least two of his/her opponents (SFA).
1990 (IFAB) Attacking players are not offside if a defending player is on the same level.
1993 (IFAB) If the offside position occurs in the goal area, the subsequent indirect free kick may be taken from any place within the goal area (IFA).
1995 (IFAB) Differentiation between active and passive offside, i.e. the offside decision is deferred, whether the offside player plays the ball or not.
2016 The indirect free kick as a punishment for offside position takes place at the point where the attacker actively went offside.

 

Proposals for law amendments that were not accepted:

year club/association proposal reaction
1866 Barnes FC Repeal of an offside law. rejected
1867ff 1867 Braham College FC; 1872, 1873 Nottingham Forest FC Offside is anyone who is closer to the opposing goal line than the ball. rejected
1867ff 1867, 1872, 1874, 1875 by Sheffield FA and 1902 and 1914 by SFA Introduction of the offside law with „less than two opposing players“ instead of three. withdrawn and rejected
1900 FA An offside position is possible during the kick rejected
1913 Offside players may hinder other players. rejected
1923, 1924 SFA Change of offside: „less than two…“. withdrawn
1988 FA No offside position is possible in a direct free kick. withdrawn