I usually cut my bindings at 2" to 2 1/8", using a 1/4" seam. I like a narrow binding and this also makes the binding full to the edge with the batting. I have never had a problem with the seam coming out because of it being only 1/4". In fact when I do a miniature quilt I cut the seam allowance on the binding down to 1/8" before I turn the binding to the back to hand stitch.