(a) The following penalties and interest must be added to and become a part of the tax:
(1) For underpayments.
(A) If any part of any underpayment is due to negligence or intentional disregard but without intent to defraud, there must be added to the tax an amount up to 25 percent of the underpayment as determined by the director; and
(B) If any part of any underpayment of tax required to be shown on a return is due to fraud, there must be added to the tax an amount up to 50 percent of the underpayment as determined by the director.
(2) For delinquent payments.
(A) If any amount of tax is not paid on or before the last date prescribed for payment, interest on such amount at the rate of two-thirds of 1 percent a month or fraction of a month must be paid for the period beginning with the first calendar day after the date prescribed for payment;
(B) Interest prescribed under this paragraph on any tax must be paid upon notice and demand, and must be assessed, collected, and paid in the same manner as taxes;
(C) No interest under this paragraph can be imposed on interest provided by this paragraph; and
(D) If any portion of a tax is satisfied by credit of any overpayment, then no interest may be imposed under this paragraph on the portion of the tax so satisfied for any period during which, if the credit had not been made, interest would have been allowable with respect to the overpayment.
(3) Failure to file tax return. In case of failure to file any tax return required to be filed on the date prescribed therefor (determined with regard to any extension of time for filing), unless it is shown that the failure is due to reasonable cause and not due to neglect, there is added to the amount required to be shown as tax on the return 5 percent of the amount of the tax if the failure is for not more than one month, with an additional 5 percent for each additional month or fraction thereof that the failure continues, not exceeding 25 percent in the aggregate. For the purposes of this subdivision, the amount of tax required to be shown on the return is reduced by the amount of any part of the tax which is paid on or before the date prescribed for payment of the tax and by the amount of any credit against the tax which may be claimed upon the return.
(4) Failure to pay tax after filing timely returns. If a return is filed on or before the date prescribed therefor and the amount shown as tax on the return is not completely paid within 60 days of the prescribed filing date, there shall be added to the unpaid tax an amount of up to 20 percent as determined by the director.
(b) No taxpayer is exempt from any penalty or interest by reason of having contested the tax, except to the extent the tax is adjudged to be excessive or contrary to law.
(Added by Ord. 21-33)