Not my field, but I wanted to let people know about this program. CSU, Sacramento is offering a completely web-based Master of Science in Business Administration program in Taxation. Although the College of Continuing Education handles the online delivery system, the degree is granted by the AACSB-accredited College of Business Administration. The classes are a six-week format, and they say the motivated can complete the program in 18 months. http://www.cce.csus.edu/msbatax/index.htm
I live near Sacramento. CSUS has a good reputation in Northern California and I'm sure they offer a solid program.