I'm not on Xanax, but I think the smallest Xanax you can get is 0.5mg, right?

Are you taking four 0.5mg Xanax's a day or two 1mg Xanax's a day? If you're taking two 1mg Xanax's a day, I'm guessing you're cutting it into fourths?

If you have tapering problems, you could always ask for 0.5mg Xanax's and cut that into fourths. Then you can reduce your dosage by 0.125 every 1-2 weeks (if you have problems reducing by 0.25 every time).