Dezan Shira & Associates publisher of China Briefing has made available a IIT calculator. I did one of these about 10 years ago when the tax law was simpler.
Use it with the caution the law might change or your facts may be interpreted differently by tax authorities.
It should give you a pretty good idea of your tax exposure.
Except that it doesn't include Kunming or Yunnan as options?
Geezer thanks for posting this, very useful. From my quick checks it seems my well off Chinese friends' complaints about high income tax are way off the mark. They'd be in for a shock if they moved to Europe and maybe America too where they'd have to pay property taxes as well.
@cloud: 'Socialist market economy'.