Any person desiring to pay any subsequent taxes on any lands or town lots for which such person holds the tax certificates shall produce such certificates to the treasurer, or, if certificates are retained by the treasurer, the person shall be notified by the treasurer of the amount due. Upon receipt of payment, the treasurer shall record the amount of the subsequent tax and the date of payment on the permanent record. The treasurer may receive a fee for such services, as provided in section 30-1-102 (1)(j), C.R.S.