When does reputation increase?

I know rep slowly increases all season, but lets say you are top of League 1 and bound for promotion to the Championship.

Do you get your big rep boost for promotion:

a) When it is obvious (i.e. 29 points clear of 3rd with 10 games left)

b) When mathmatically assured (i.e. 31 points clear with 10 games left)

c) Some other point - presumably when new season starts with youth players being promoted etc?

Just wondering if I should hold off signing players until I get my rep boost so can aim higher, and when this is.

Thanks!

i think the major boost comes when the season "resets" so, would be option 3...