Assets that are being depreciated are written off over a period of years, known as the “write off period” (also known “recovery period”).
Here are the write off periods for assets most used by Idaho businesses and farmers:
3 Years: Idaho web site design. Some software.
Semi-trucks (not trailers). Racehorses over two years old. All horses over twelve years old. Hogs.
5 Years: office equipment and computers.
Some electronic equipment. Most equipment used for research and experimentation. Carpeting. Movable partitions. Appliance and furniture in residential rental property. Cars, trucks (other than semi-trucks), other alternative energy property. Portable gasoline storage tanks. Farm machinery and equipment. Cattle, sheep, and goats.
7 Years: machinery.
Equipment. Tools. Furniture. Store fixtures. Small signs. Railroad track. Horses other than those listed und “3 years.”
15 Years: large Idaho outdoor signs.
Gas stations, including their mini-marts (with some exceptions). Intangible property such as goodwill, trademark, trade names, franchise, customer lists, and covenants not to compete. Domain names purchased from a reseller. Patents and copyrights if acquired as part of a business you are buying (see other below). Leasehold improvements. Restraint and retail renovations.
20 Years: some farm buildings.
27 ½ years: residential rental buildings.
39 years: all buildings other than a residential rental property, farm buildings, restraint, and retail renovations, and some gas government.
Other: patents and copyrights are depreciated over the life granted by the government.