Step 4 – In the “Leasing Payments” section, enter the amount of the monthly rental due and the day of the month the rent is due. Then enter the numeric value of the month and year in which the agreement begins. Finally, enter the last day of the month in which the duration of this document is to begin. According to the California Civil Code of 1947, rent is “payable at the end of the operation” because it is due successively, whether the operation is due “by day, week, month, quarter or year”. In other words, the rent must be paid until the due date indicated in the rental agreement (usually at the end of the month). According to California law, there is no additional time. Key money is a rate that describes an undocumented payment to a landlord in exchange for the opportunity to rent real estate.