as to something

as to

1. Regarding or referring to; with respect to; apropos of. As to the matter at hand, we must act firmly and without delay.
2. By means of or according to. Please catalogue the entries as to their size in millimeters.
Farlex Dictionary of Idioms.

as to something

used when you are referring to something: As to tax, that will be deducted from your salary.
See also: something
Farlex Partner Idioms Dictionary
See also:
  • as to
  • apropos
  • apropos of
  • hold the line at (someone or something)
  • (both) feet on the ground
  • fast asleep
  • bite of the reality sandwich
  • a knife in the back
  • blue state
  • written in the stars