Rates of depreciation
(for Companies Act)
I. Buildings
(a)  Buildings (other than factory buildings) RCC Frame Structure 60 Years
(b) Buildings (other than factory buildings) other than RCC Frame Structure 30 Years
(c)  Factory buildings -do-
(d)  Fences, wells, tube wells 5 Years
(e)  Others (including temporary structure, etc.) 3 Years
II. Plant and Machinery
(a)  Plant and Machinery other than continuous process plant not covered under specific industries 15 Years
(b)  Plant and Machinery used in glass manufacturing
1. Plant and Machinery except direct fire glass melting furnaces — Recuperative and regenerative glass melting furnaces 13 Years
2. Plant and Machinery except direct fire glass melting furnaces — Moulds 8 Years
3. Float Glass Melting Furnaces 10 Years
III. Furniture and fittings
(i)  General furniture and fittings 10 Years
(ii)  Furniture and fittings used in hotels, restaurants and boarding houses, schools, colleges and other educational institutions, libraries; welfare centres; meeting halls, cinema houses; theatres and circuses; and furniture and fittings let out on hire for use on the occasion of marriages and similar functions. 8 Years
IV. Motor Vehicles
1. Motor cycles, scooters and other mopeds 10 Years
2.  Motor buses, motor lorries, motor cars and motor taxies used in a business of running them on hire 6 Years
3. Motor buses, motor lorries and motor cars other than those used in a business of running them on hire 8 Years
4. Motor tractors, harvesting combines and heavy vehicles -do-
5. Electrically operated vehicles including battery powered or fuel cell powered vehicles 8 Years
V. Office equipment 5 Years
VI. Computers and data processing units
(i)  Servers and networks 6 Years
(ii)  End user devices, such as, desktops, laptops, etc. 3 Years
VII. Laboratory equipment
(i)  General laboratory equipment 10 Years
(ii)  Laboratory equipments used in educational institutions 5 Years
VIII. Electrical Installations and Equipment 10 years

Depreciation as per Companies Act determine the Net Profits of a Company for a specified financial year, Sec. 349 of the Companies Act 1956, states that certain sums shall be credited and certain sums shall also be debited while arriving at the Net Profit earned by the Company during the year.