The UAE may have no income taxes but is is very expensive to live there. Remember you will still have file a US tax return and pay us taxes after deducting the $99200 (2014) foreign earned income exclusion and housing deduction. Read more at www.taxmeless.com
Read more about hidden other costs at:
http://www.arabianbusiness.com/expats-need-count-hidden-costs-of-living-in-uae-report-572603.html