I know you are asking about Nebraska, but I charge $35 extra for a 9 month lease; $50 extra for a 6 month lease and $75 extra for a 3 month lease. Month to month leases are set at whatever the Market Rate is plus $100 extra dollars. After all, it can be very inconvenient to have someone on a M-T-M lease give notice on 12/31 and move out 1/30!