Hi Intense, welcome to the riddle forum. What a toughie to start with.
I will have a go and say;
"without (me) you wouldnt be home" = ho - (me)
"with (me) youd pay tax" = tax + (me)
"From a birds eye a waiting point"
Now this is a long shot. A perch is a freshwater bony fish belonging to the family Percidae. Perch, of which there are three species, lend their name to the largest order of vertebrates: the Percifor(me), from the Greek perke meaning perch.
At the end, it is only ?'me'
Well, it's a start.