I cut my binding strips the width of the finished binding I want times 4 plus ½". A 1" finished binding would be cut 4½" wide and still have a ¼" seam allowance. It's not the seam allowance on wide bindings that changes, it's the width of the trimmed batting and backing.

I cut my binding 2 3/4, fold in half and sew it on with 1/4 seam.and then fold over seam. Goes on much easier with that added 1/4 in.

I have always done 2 and 1/2 but madebe I will change to 2 and 3/4. It sounds better to me. A little more to work with.

I make my strips 2 1/8 inches wide, double it and then sew the raw edged side onto the back with a 1/4" seam allowance. Then I fold it over and turn it to the front and sew right down the folded edge. If I choose my bobbin thread right the stitches don't show against the backing. This gives me a 1/4 inch wide binding on the back and 3/8 inch on the front, but it keeps me from having to hand stitch and also with the front being a smidge wider the stitching doesn't fall on the binding that is on the back on the quilt.

I use W&N batting mostly and I like the look of a narrow binding. So, I usually cut 2 1/4 " strips, fold them in half and sew with a 1/4 " seam.

I cut my binding strips 2" wide, press in half and stitch on the front side with 1/4" seam. I finish my binding by hand and this width of binding and seam allows the perfect amount to fold over and just ever so barely cover the seam line. It took me awhile to get the right mix so my binding was even on both sides.