• Personal Income Tax
  Residents and nonresidents that earn income in Arizona will pay state income tax.
• Vehicle Tax
  The fee to obtain a driver license is between $10 and $25. You can determine how much it will cost you at the Motor Vehicle Department web site. The fee to register your vehicle is generally less than $10, but there is an additional vehicle license tax (VLT) assessed at the time of registration
• Estate Tax
  Arizona does not impose an inheritance tax or a gift tax.
• Property Tax
  Arizona charges a property tax for owner-occupied residential real property. 
• Arizona Sales Tax
  The Arizona sales tax rate is 5.6%. Currently, all fifteen counties levy a tax in addition to the state tax. For Maricopa County, where Phoenix is located, that's 0.7%, making a sales tax of 6.3%. Incorporated municipalities also levy transaction privilege taxes which are generally in the range of 1% to 3%. Hotel and taxi services have additional taxes charged.
• The state of Arizona does not levy a state tax on food for home consumption. However, some cities do levy these taxes: 

• Gas Tax
  in addition to the tax imposed by the federal government 

Arizona:

• Arizona Dept. of Revenue:
  • Regulatory Agenda (pdf)
  • Tax Professional Menu
• Arizona Administrative Code:
  • Title 15:  Revenue
  • Title 16:  Tax Appeals
• Arizona Revised Statutes:
  • Title 42:  Taxation
  • Title 43:  Taxation of Income
  • Title 48:  Special Taxing Districts

Federal:

• Code of Federal Regulations
  • Title 26:  Internal Revenue
• Internal Revenue Service:  Resources for Tax Professionals
• United States Code:
  • Title 26:  Internal Revenue Code
  • Title 26-Appendix:  Internal Revenue Code-Appendix