I am in the process of remodeling a bathroom and I am putting in a new tub and plan to tile the walls. It seems most tubs are standard depths of 30 or 32 inches, ours is 32". Now the new tub is attached right to the 2x framing then the backer board comes over the lip of the tub. When you do this you make a 32" tub 31-1/2" to the front of the tub. Now my tile is gonna be 1/2" past the front of the tub. I am using 2"x2" tiles. Do I have to cut the back row down by 1/2" to make them match the front of the tub or am I missing something?
Yes the tile will need to be cut. You can either use a wet saw or a manual tile cutter.
Before you go cutting the tiles in half for the back wall you will need to make sure you are accounting for the width of the grout lines. Are your tiles really 2"x2"? Do you have bullnose pieces or trim pieces to transition the tile at the edge, or is it OK for your tile to show an exposed edge?