The Colorado Department of Revenue outlined the interest rate for overpayments, nonpayments, and underpayments for all 2014 state taxes. Rates will stay at 6%. If the underpayment or nonpayment is paid within 30 days of recieving notice from the state, or is voluntarily paid without notice, the interest rate will be reduced to 3%.
Attached is a summary provided by Gallagher&Kennedy which highlights the 2013 Arizona Tax Legislation. The majority of these new tax laws went into effect on September 13, 2013.
South Dakota’s quest service which could be used to file Sales and use tax returns, and contractors excise returns will not be available after July 23, 2013. Instead’ the South Dakota Department of revenue suggests using the EPATH service to electronically file said returns.