Three years ago, Arizona voters overwhelmingly decided to temporarily raise the state sales tax by a penny on the dollar. Now, as Proposition 100 is set to expire at the end of May, KJZZ is looking at the impact the tax has had on the state — from public policy to business to education. 

Monday will be very busy for some people who waited until the last minute to file their taxes. It’s often a mad dash to gather all the appropriate documents and fill in the blanks.

The Internal Revenue Service says 660,000 taxpayers will have their refunds delayed by up to six weeks because of a problem with the software they used tofile their tax returns.

Governor Jan Brewer will deliver her State of the State address this afternoon, to help kick off the 2013 legislative session.

Phoenix hospitals will pay a new tax, under an ordinance approved Tuesday by the Phoenix City Council in a 6-3 vote. Supporters say it will bring in $200 million in federal money to help hospitals care for people without insurance.

Arizona taxpayers affected by Hurricane Sandy will have a little more time to file their returns.

A Maricopa County Superior Court judge will hear arguments Monday morning on whether an initiative to ask voters to repeal a Glendale sales tax increase should be on November's ballot.

Arizona Secretary of State Ken Bennett said he would not put a sales tax measure on the ballot because paper and electronic language differed. Early Wednesday morning a Maricopa County Superior Court judge decided that it was a minor error and that the measure is valid.

Voters in California have narrowly rejected an additional tax on cigarettes.

Last week Gov. Jan Brewer signed HB2815 into law. The bill includes incentives to draw businesses into Arizona in an attempt to boost the economy. Michael Hunter, special advisor on tax policy and reform, and Dennis Hoffman, economist at the W.P. Carey School of Business at ASU, discuss tax policy in Arizona.