The Idaho state unemployment tax rate has declined 30% from an average of 2.75% of employee wages in 2013 to 1.9% in 2014. This is the second straight year that the rate has declined representing a 42% reduction since 2012 when the average rate was 3.3%. The tax rate applies to the first $35,200 paid to each worker. Each employer’s rate is based on the amount paid into the fund and the amount of unemployment benefits paid to the employer’s former employees. The greater the amount of reserves an employer has paid in, the lower the individual tax rate for that employer.