(in) so far as
To such an extent that; to the degree that. In so far as money is concerned, our project will be completely funded by private donations. So far as I can guess, we should be finished filming by late spring.
so far as
see under as far as.
as/so ˈfar as...
as much as; to the extent that: I will help you as far as I am able.As far as I’m concerned, the whole matter is no longer my responsibility and is now with the police.