Section 35-6-02-08-103 - Depreciation Schedule1. The State Tax Commission (STC) will annually supply the appropriate depreciation schedules. The schedule to be applied to a particular industry will be determined by the average class life for that industry as established by Marshall Valuation Service's Life Expectancy Guidelines. This guideline is based on IRS publication number 946 which sets forth economic class lives. The depreciation table bottoms at a twenty percent (20%) good for operating equipment. Salvage value will apply only to equipment, which is not usable. If equipment is operational, it will not be considered salvage.2. Depreciation on watercraft of every kind and character used in connection with gaming operations that have permanent connections to shore side facilities will be determined by the Mississippi State Tax Commission guidelines (Class Lives of Industries) and published annually.35 Miss. Code. R. 6-02-08-103