Idaho sales tax began in 1965. The rate has changed six times:

July 1965 through February 1983 3%

March 1983 through May 1983 4%

June 1983 through June 1984 4 1/2%

July 1984 through March 1986 4%

April 1986 to April 2003 5%

May 2003 to June 2005 6%

July 2005 rate changed to 5%