The appraiser shall, after having ascertained the assessed value of the property of such taxpayer, add 5% thereto as a penalty for late filing if the failure is not for more than one month, with an additional 5% for each additional month or fraction thereof during which such failure continues, not exceeding 25% in the aggregate.
For good cause shown the appraiser may extend the time in which to make and file such statement. Such request for extension of time must be in writing and shall state just and adequate reasons on which the request may be granted. The request must be received by the appraiser prior to the due date of the statement.
K.S.A. 79-1422