I have distanced myself from CBA things in recent years. But my understanding now is that there are two types of LTIR. LTIR in the offseason (or, prior to the season...if differentiation needs to be made) and in-season.
There are different ramifications between enacting it prior to the first season day vs the in-season variety that we were all so used to. I think many readers (including the author) would enjoy the Explain It Like I'm 5 version of the differences between those two (or more?) version of LTIR.
Thank you.
There are actually three kinds of LTIR:
A) LTIR in the regular season.
B) LTIR on the final day of training camp to be cap compliant for the regular season.
C) LTIR during the offseason
(A) LTIR in the regular season requires the team to first be cap complaint, whether that's on day 1 or any other day of the season before exercising LTIR. The amount of relief available to the team is based on the team's Averaged Club Salary at the time of the LTIR. Short and simplified version is the team can replace the LTIRed player's contract even if it would have caused the Averaged Club Salary to go over the Upper Limit.
example: Cap of $81.5m, team has a Averaged Club Salary of $80.9m and places a $2m player on LTIR day 1 of the season. The team can now have a maxed Averaged Club Salary of $81.5m and exceed the Upper Limit by $1.4m, for a total cap of $82.9m.
(B) LTIR on the final day of training camp is usually only done when it's impossible for the team to be cap compliant on Day 1 of the season and use option (A). With option (B) the team's Averaged Club Salary is calculated on the final day of training camp and a player or players are placed on LTIR to satisfy the amount the Averaged Club Salary is over the Upper Limit. One notable difference with (B) is that LTIR generates no extra space--the team enters the season with zero free cap space. Note that the roster on the final day of training camp must be a legal roster with 20-23 players on the Active Roster.
example: Cap of $81.5m, team has an Averaged Club Salary of $82.6m and places a $2m player on LTIR on the final day of training camp. The team can now have a max Averaged Club Salary of $81.5m and exceed the Upper Limit by $1.1m for a total cap of $82.6m (the amount on the final day of training camp). The LTIR player is considering to "fulfill" the overage with no free space remaining.
(C) LTIR during the offseason works the same as (A) except it applies to the summer 110% cap. Note this LTIR doesn't carry over to the regular season, a team using (C) will still probably need to do (A) or (B) to be cap compliant for the regular season. To my knowledge Toronto this summer is the first time it's ever been used. (Yes, Toronto claimed they could do it a couple summers ago but never ended up doing so)
Given the choice between (A) and (B) more often (A) will generate greater cap relief for the team and is preferred over (B). However this isn't a hard rule and there can be scenarios where (B) will result in greater relief.