"Sec. 6   RCW 82.32.090 and 2003 1st sp.s. c 13 s 13 are each amended to read as follows:
     (1) If payment of any tax due on a return to be filed by a taxpayer is not received by the department of revenue by the due date, there shall be assessed a penalty of five percent of the amount of the tax; and if the tax is not received on or before the last day of the month following the due date, there shall be assessed a total penalty of fifteen percent of the amount of the tax under this subsection; and if the tax is not received on or before the last day of the second month following the due date, there shall be assessed a total penalty of twenty-five percent of the amount of the tax under this subsection. No penalty so added shall be less than five dollars.
     (2) If the department of revenue determines that any tax ((is due)) has been substantially underpaid, there shall be assessed a penalty of five percent of the amount of the tax determined by the department to be due((; and)). If payment of any tax determined by the department to be due is not received by the department by the due date specified in the notice, or any extension thereof, there shall be assessed a total penalty of fifteen percent of the amount of the tax under this subsection; and if ((the)) payment of any tax determined by the department to be due is not received on or before the thirtieth day following the due date specified in the notice of tax due, or any extension thereof, there shall be assessed a total penalty of twenty-five percent of the amount of the tax under this subsection. No penalty so added shall be less than five dollars. As used in this section, "substantially underpaid" means that the taxpayer has paid less than eighty percent of the amount of tax determined by the department to be due for all of the types of taxes included in, and for the entire period of time covered by, the department's examination, and the amount of underpayment is at least one thousand dollars.
     (3) If a warrant be issued by the department of revenue for the collection of taxes, increases, and penalties, there shall be added thereto a penalty of ten percent of the amount of the tax, but not less than ten dollars.
     (4) If the department finds that a person has engaged in any business or performed any act upon which a tax is imposed under this title and that person has not obtained from the department a registration certificate as required by RCW 82.32.030, the department shall impose a penalty of five percent of the amount of tax due from that person for the period that the person was not registered as required by RCW 82.32.030. The department shall not impose the penalty under this subsection (4) if a person who has engaged in business taxable under this title without first having registered as required by RCW 82.32.030, prior to any notification by the department of the need to register, obtains a registration certificate from the department.
     (5) If the department finds that all or any part of a deficiency resulted from the disregard of specific written instructions as to reporting or tax liabilities, the department shall add a penalty of ten percent of the amount of the additional tax found due because of the failure to follow the instructions. A taxpayer disregards specific written instructions when the department of revenue has informed the taxpayer in writing of the taxpayer's tax obligations and the taxpayer fails to act in accordance with those instructions unless the department has not issued final instructions because the matter is under appeal pursuant to this chapter or departmental regulations. The department shall not assess the penalty under this section upon any taxpayer who has made a good faith effort to comply with the specific written instructions provided by the department to that taxpayer. Specific written instructions may be given as a part of a tax assessment, audit, determination, or closing agreement, provided that such specific written instructions shall apply only to the taxpayer addressed or referenced on such documents. Any specific written instructions by the department of revenue shall be clearly identified as such and shall inform the taxpayer that failure to follow the instructions may subject the taxpayer to the penalties imposed by this subsection.
     (6) If the department finds that all or any part of the deficiency resulted from an intent to evade the tax payable hereunder, a further penalty of fifty percent of the additional tax found to be due shall be added.
     (7) The penalties imposed under subsections (1) through (4) of this section can each be imposed on the same tax found to be due. This subsection does not prohibit or restrict the application of other penalties authorized by law.
     (8) The department of revenue may not impose both the evasion penalty and the penalty for disregarding specific written instructions on the same tax found to be due.
     (9) For the purposes of this section, "return" means any document a person is required by the state of Washington to file to satisfy or establish a tax or fee obligation that is administered or collected by the department of revenue, and that has a statutorily defined due date."