In case the first half of the real property taxes remains unpaid after December 20, the first half of the tax shall draw interest at the rate prescribed by K.S.A. 79-2968, and amendments thereto, plus five percentage points per annum and may be paid at any time prior to May 10 following by paying 1/2 of the tax together with interest at such rate from December 20 to date of payment. Subject to the provisions of subsection (d), all real property taxes of the preceding year and accrued interest thereon which remain due and unpaid on May 11 shall accrue interest at the rate prescribed by K.S.A. 79-2968, and amendments thereto, plus five percentage points per annum from May 10 until paid, or until the real property is sold for taxes by foreclosure as provided by law. Except as provided by subsection (c), all interest herein provided shall be credited to the county general fund, and whenever any such interest is paid the county treasurer shall enter the amount of interest so paid on the tax rolls in the proper column and account for such sum.
K.S.A. 79-2004