Sales Tax Holidays by State

 No dice for AZ, sadly!

Official Page

Alabama: August 5-7, 2011
Clothing ($100 or less)
Computers, Computer Software & School Computer Supplies ($750 or less)
School Supplies, including art and instructional material ($50 or less)
Books ($30 or less)

Arkansas: August 6-7, 2011

Connecticut: August 21-27, 2011
Clothing (under $300)
Shoes (under $300)

Florida: August 12-14, 2011
Books ($75 or less)
Clothing ($75 or less)
Shoes ($75 or less)
School supplies ($15 or less)

Illinois: August 6-15, 2011

Iowa: August 5-6, 2011
Clothing (under $100)
Shoes (under $100)

Louisiana: August 5-6, 2011
All purchases under $2,500 (excludes taxable services, vehicles and meals)

Maryland: August 14-20, 2011
Clothing ($100 or less)
Shoes/Footwear ($100 or less)

Mississippi: July 29-30, 2011
Clothing (under $100)
Shoes (under $100)

Missouri: August 5-7, 2011
Clothing (under $100)
School Supplies (under $100)
Computers & Computer Equipment (under $3,500)
Computer Software (under $350)

New Mexico: August 5-7, 2011
Clothing (under $100)
Shoes (under $100)
Computers (under $1000)
Computer Equipment (under $500)
School Supplies (under $15)

North Carolina: August 5-7, 2011
Clothing (under $100)
Shoes (under $100)
School Supplies (under $100)
Recreational and Sports Equipment (under $50)
Computer Equipment (under $250)
Computers (under $3,500)

Oklahoma: August 5-7, 2011
Clothing (under $100)
Shoes (under $100)

South Carolina: August 5-7, 2011
Clothing
Shoes
Accessories
School Supplies
Computers & Printers
Computer Software

Tennessee: August 5-7, 2011
Clothing (under $100)
School Supplies (under $100)
Art Supplies (under $100)
Computers (under $1,500)

Texas: August 19-21, 2011
Clothing (under $100)
Shoes (under $100)
School Supplies (under $100)
Backpacks (under $100, only available for elementary and secondary students)
*Texas tax-free holiday also applies to layaway items, just in case you need to come back for it

Virginia: August 5-7, 2011
Clothing (under $100)
Shoes (under $100)
School Supplies (under $20)

thanks SouthernSavers