Nandhakumar & Sundaran
Chartered Accountants

Rates of depreciation

(for income-tax)

AS APPLICABLE FROM THE ASSESSMENT YEAR 2003-04 ONWARDS

Block of assets

Depreciation allowance as % of WDV

AYs ‘03-04 to ‘05-06

AY 2006-07 onwards

1

2

3

PART A

TANGIBLE ASSETS

 

 

I. BUILDING [See Notes 1 to 4 below the Table]

 

 

(1) Buildings which are used mainly for residential purposes except hotels and boarding houses

5

5

(2) Buildings other than those used mainly for residential purposes and not covered by sub-items (1) above and (3) below

10

10

(3) Buildings acquired on or after the 1st day of September, 2002 for installing machinery and plant forming part of water supply project or water treatment system and which is put to use for the purpose of business of providing infra- structure facilities under clause (i) of sub-section (4) of 

100

100

(4) Purely temporary erections such as wooden structures

100

100

II. FURNITURE AND FITTINGS

 

 

Furniture and fittings including electrical fittings [See Note 5 below the Table]

15

10

III. MACHINERY AND PLANT

 

 

(1) Machinery and plant other than those covered by sub-items (2), (3) and (8) below :

25c.

15c.

a.(2) Motor cars, other than those used in a business of running them on hire, acquired or put to use on or after the 1st day of April, 1990

20

15

(3) (i) Aeroplanes - Aeroengines

40

40

b.(ii) Motor buses, motor lorries and motor taxis used in a business of running them on hire

40

30

 (iii) Commercial vehicle which is acquired by the assessee on or after the 1st day of October, 1998, but before the 1st day of April, 1999 and is put to use for any period before the 1st day of April, 1999 for the purposes of business or profession in accordance with the third proviso to clause (ii) of sub-section (1) of [See Note 6 below the Table]

40

40

(iv) New commercial vehicle which is acquired on or after the 1st day of October, 1998, but before the 1st day of April, 1999 in replacement of condemned vehicle of over 15 years of age and is put to use for any period before the 1st day of April, 1999 for the purposes of business or profession in accordance with the third proviso to clause (ii) of sub-section (1) of [See Note 6 below the Table]

60

60

(v) New commercial vehicle which is acquired on or after the 1st day of April, 1999 but before the 1st day of April, 2000 in replacement of condemned vehicle of over 15 years of age and is put to use before the 1st day of April, 2000 for the purposes of business or profession in accordance with the second proviso to clause (ii) of sub-section (1) of section 32 [See Note 6 below the Table]

60

60

(vi) New commercial vehicle which is acquired on or after the 1st day of April, 2001 but before the 1st day of April, 2002 and is put to use before the 1st day of April, 2002 for the purposes of business or profession [See Note 6 below the Table]

50

50

(via) New commercial vehicle which is acquired on or after the 1st day of January, 2009 but before the 1st day of October, 2009 and is put to use before the 1st day of October, 2009 for the purposes of business or profession [See paragraph 6 of the Notes below this Table]

50

d.(vii) Moulds used in rubber and plastic goods factories

40

30

(viii) Air pollution control equipment, being—

 

 

(a) Electrostatic precipitation systems

 

 

(b) Felt-filter systems

 

 

(c) Dust collector systems

100

100

(d) Scrubber-counter current/venturi/packed bed/cyclonic scrubbers

 

 

(e) Ash handling system and evacuation system

 

 

(ix) Water pollution control equipment, being—

 

 

(a) Mechanical screen systems

 

 

(b) Aerated detritus chambers (including air compressor)

 

 

(c) Mechanically skimmed oil and grease removal systems

 

 

(d) Chemical feed systems and flash mixing equipment

 

 

(e) Mechanical flocculators and mechanical reactors

 

 

(f) Diffused air/mechanically aerated activated sludge systems

 

 

(g) Aerated lagoon systems

100

100

(h) Biofilters

 

 

(i) Methane-recovery anaerobic digester systems

 

 

(j) Air floatation systems

 

 

(k) Air/steam stripping systems

 

 

(l) Urea Hydrolysis systems

 

 

(m) Marine outfall systems

 

 

(n) Centrifuge for dewatering sludge

 

 

(o) Rotating biological contractor or bio-disc

 

 

(p) Ion exchange resin column

 

 

(q) Activated carbon column

 

 

 (x) (a) Solidwaste control equipments being - caustic/lime/chrome/mineral/cryolite recovery systems

100

100

(b) Solidwaste recycling and resource recovery systems

(xi) Machinery and plant, used in semi-conductor industry covering all integrated circuits (ICs) (excluding hybrid integrated circuits) ranging from small scale integration (SSI) to large scale integration/very large scale integration (LSI/VLSI) as also discrete semi-conductor devices such as diodes, transistors, thyristors, triacs, etc., other than those covered by entries (viii), (ix) and (x) of this sub-item and sub-item (8) below

40

30

(xia) Life saving medical equipment, being—

 

 

(a) D.C. Defibrillators for internal use and pace makers

 

 

(b) Haemodialysors

 

 

(c) Heart lung machine

 

 

(d) Cobalt Therapy Unit

 

 

(e) Colour Doppler

 

 

(f) SPECT Gamma Camera

 

 

(g) Vascular Angiography System including Digital subtraction Angiography

 

 

(h) Ventilator used with anaesthesia apparatus

 

 

(i) Magnetic Resonance Imaging System

 

 

(j) Surgical Laser

40

40

(k) Ventilators other than those used with anaesthesia

 

 

(l) Gamma knife

 

 

(m) Bone Marrow Transplant Equipment including silastic long standing intravenous catheters for chemotherapy

 

 

(n) Fibreoptic endoscopes including Paediatric resectoscope/audit resectoscope, Peritoneoscopes, Arthoscope, Microlaryngoscope, Fibreoptic Flexible Nasal Pharyngo Bronchoscope, Fibreoptic Flexible Laryngo Bronchoscope, Video Laryngo Bronchoscope and Video Oesophago Gastroscope, Stroboscope, Fibreoptic Flexible Oesophago Gastroscope

 

 

(o) Laparoscope (single incision)

 

 

(4) Containers made of glass or plastic used as re-fills

50

50

(5) Computers including computer software [See note 7 below the Table]

60

60

(6) Machinery and plant, used in weaving, processing and garment sector of textile industry, which is purchased under TUFS on or after the 1st day of April, 2001 but before the 1st day of April, 2004 and is put to use before the 1st day of April, 2004 [See Note 8 below the Table]

50

50

(7) Machinery and plant, acquired and installed on or after the 1st day of September, 2002 in a water supply project or a water treatment system and which is put to use for the purpose of business of providing infrastructure facility under clause (i) of sub-section (4) of [See Notes 4 and 9 below the Table]

100

100

(8) (i) Wooden parts used in artificial silk manufacturing machinerye.

100

100

(ii) Cinematograph films - bulbs of studio lights

100

100

(iii) Match factories - Wooden match frames

100

100

(iv) Mines and quarries :

 

 

(a) Tubs, winding ropes, haulage ropes and sand stowing pipes

100 

100 

(b) Safety lamps

(v) Salt works - Salt pans, reservoirs and condensers, etc., made of earthy, sandy or clayey material or any other similar material

100

100

(vi) Flour mills - Rollers

80

80

(vii) Iron and steel industry - Rolling mill rolls

80

80

(viii) Sugar works - Rollers

80

80

(ix) Energy saving devices, being—

 

 

A. Specialised boilers and furnaces:

 

 

(a) Ignifluid/fluidized bed boilers

 

 

(b) Flameless furnaces and continuous pusher type furnaces

 

 

(c) Fluidized bed type heat treatment furnaces

80

80

(d) High efficiency boilers (thermal efficiency higher than 75 per cent in case of coal fired and 80 per cent in case of oil/gas fired boilers)

 

 

B. Instrumentation and monitoring system for monitoring energy flows:

 

 

(a) Automatic electrical load monitoring systems

 

 

(b) Digital heat loss meters

 

 

(c) Micro-processor based control systems

 

 

(d) Infra-red thermography

80

80

(e) Meters for measuring heat losses, furnace oil flow, steam flow, electric energy and power factor meters

 

 

(f) Maximum demand indicator and clamp on power meters

 

 

(g) Exhaust gases analyser

 

 

(h) Fuel oil pump test bench

 

 

C. Waste heat recovery equipment:

 

 

(a) Economisers and feed water heaters

 

 

(b) Recuperators and air pre-heaters

80

80

(c) Heat pumps

 

 

(d) Thermal energy wheel for high and low temperature waste heat recovery

 

 

D. Co-generation systems:

 

 

(a) Back pressure pass out, controlled extraction, extraction-cum-condensing turbines for co-generation along with pressure boilers

80

80

(b) Vapour absorption refrigeration systems

 

 

(c) Organic rankine cycle power systems

 

 

(d) Low inlet pressure small steam turbines

 

 

E. Electrical equipment:

 

 

(a) Shunt capacitors and synchronous condenser systems

 

 

(b) Automatic power cut off devices (relays) mounted on individual motors

 

 

(c) Automatic voltage controller

 

 

(d) Power factor controller for AC motors

 

 

(e) Solid state devices for controlling motor speeds

 

 

(f) Thermally energy-efficient stenters (which require 800 or less kilocalories of heat to evaporate one kilogram of water)

 

 

(g) Series compensation equipment

 

 

(h) Flexible AC Transmission (FACT) devices - Thyristor controlled series compensation equipment

80

80

(i) Time of Day (ToD) energy meters

 

 

(j) Equipment to establish transmission highways for National Power Grid to facilitate transfer of surplus power of one region to the deficient region

 

 

(k) Remote terminal units/intelligent electronic devices, computer hardware/software, router/bridges, other required equipment and associated communication systems for supervisory control and data acquisition systems, energy management systems and distribution management systems for power transmission systems

 

 

(l) Special energy meters for Availability Based Tariff (ABT)

 

 

F. Burners:

 

 

(a) 0 to 10 per cent excess air burners

 

 

(b) Emulsion burners

80

80

(c) Burners using air with high pre-heat temperature (above 300°C)

 

 

G. Other equipment:

 

 

(a) Wet air oxidation equipment for recovery of chemicals and heat

 

 

(b) Mechanical vapour recompressors

 

 

(c) Thin film evaporators

 

 

(d) Automatic micro-processor based load demand controllers

80

80

(e) Coal based producer gas plants

 

 

(f) Fluid drives and fluid couplings

 

 

(g) Turbo charges/super-charges

 

 

(h) Sealed radiation sources for radiation processing plants

 

 

f.(x) Gas cylinders including valves and regulators

80

60

(xi) Glass manufacturing concerns - Direct fire glass melting furnaces

80

60

g.(xii) Mineral oil concerns:

 

 

(a) Plant used in field operations (above ground) distribution - Returnable packages

 

 

(b) Plant used in field operations (below ground), but not including kerbside pumps including underground tanks and fittings used in field operations (distribution) by mineral oil concerns

80

60

(xiii) Renewal energy devices being—

 

 

(a) Flat plate solar collectors

 

 

(b) Concentrating and pipe type solar collectors

 

 

(c) Solar cookers

 

 

(d) Solar water heaters and systems

 

 

(e) Air/gas/fluid heating systems

 

 

(f) Solar crop driers and systems

 

 

(g) Solar refrigeration, cold storages and air-conditioning systems

 

 

(h) Solar steels and desalination systems

 

 

(i) Solar power generating systems

 

 

(j) Solar pumps based on solar-thermal and solar-photovoltaic conversion

 

 

(k) Solar-photovoltaic modules and panels for water pumping and other applications

80

80

(l) Windmills and any specially designed devices which run on wind-mills installed on or before March 31, 2012

 

 

(m) Any special devices including electric generators and pumps running on wind energy installed on or before March 31, 2012

 

 

(n) Biogas plant and biogas engines

 

 

(o) Electrically operated vehicles including battery powered or fuel-cell powered vehicles

 

 

(p) Agricultural and municipal waste conversion devices producing energy

 

 

(q) Equipment for utilising ocean waste and thermal energy

 

 

(r) Machinery and plant used in the manufacture of any of the above sub-items

 

 

(9) (i) Books owned by assessees carrying on a profession—

 

 

(a) Books, being annual publications

100

100

(b) Books, other than those covered by entry (a) above

60

60

(ii) Books owned by assessees carrying on business in running lending libraries

100

100

IV. SHIPS

 

 

(1) Ocean-going ships including dredgers, tugs, barges, survey launches and other similar ships used mainly for dredging purposes and fishing vessels with wooden hull

25

20

(2) Vessels ordinarily operating on inland waters, not covered by sub-item (3) below

25

20

(3) Vessels ordinarily operating on inland waters being speed boats [See Note 10 below the Table]

25

20

PART B

 

 

INTANGIBLE ASSETS

 

 

Know-how, patents, copyrights, trademarks, licences, franchises or any other business or commercial rights of similar nature

25

25

 

Notes:

1.  "Buildings" include roads, bridges, culverts, wells and tubewells.

2.  A building shall be deemed to be a building used mainly for residential purposes, if the built-up floor area thereof used for residential purposes is not less than sixty-six and two-third per cent of its total built-up floor area and shall include any such building in the factory premises.

3.  In respect of any structure or work by way of renovation or improvement in or in relation to a building referred to in Explanation 1 of clause (ii) of sub-section (1) of , the percentage to be applied will be the percentage specified against sub-item (1) or (2) of item I as may be appropriate to the class of building in or in relation to which the renovation or improvement is effected. Where the structure is constructed or the work is done by way of extension of any such building, the percentage to be applied would be such percentage as would be appropriate, as if the structure or work constituted a separate building.

4.  Water treatment system includes system for desalination, demineralisation and purification of water.

5.  "Electrical fittings" include electrical wiring, switches, sockets, other fittings and fans, etc.

6.  "Commercial vehicle" means "heavy goods vehicle", "heavy passenger motor vehicle", "light motor vehicle", "medium goods vehicle" and "medium passenger motor vehicle" but does not include "maxi-cab", "motor-cab", "tractor" and "road-roller". The expressions "heavy goods vehicle", "heavy passenger motor vehicle", "light motor vehicle", "medium goods vehicle", "medium passenger motor vehicle", "maxi-cab", "motor-cab", "tractor" and "road-roller" shall have the meanings respectively as assigned to them in section 2 of the Motor Vehicles Act, 1988 (59 of 1988).

7.  "Computer software" means any computer programme recorded on any disc, tape, perforated media or other information storage device.

8.  "TUFS" means Technology Upgradation Fund Scheme announced by the Government of India in the form of a Resolution of the Ministry of Textiles vide No. 28/1/99-CTI of 31-3-1999.

9.  Machinery and plant includes pipes needed for delivery from the source of supply of raw water to the plant and from the plant to the storage facility.

10. "Speed boat" means a motor boat driven by a high speed internal combustion engine capable of propelling the boat at a speed exceeding 24 kilometers per hour in still water and so designed that when running at a speed, it will plane, i.e., its bow will rise from the water.

 

Depreciation rates for power generating units

(applicable from the assessment year 1998-99)

Class of assets

Depreciation allowance as percentage of actual cost

(a) Plant and Machinery in generating stations including plant foundations :—

 

 (i) Hydro-electric

3.4

(ii) Steam electric NHRS & Waste heat recovery Boilers/plants

7.84

(iii) Diesel electric and Gas plant

8.24

(b) Cooling towers and circulating water systems

7.84

(c) Hydraulic works forming part of Hydro-electric system including :—

 

 (i) Dams, spillways weirs, canals, reinforced concrete flumes and syphons

1.95

(ii) Reinforced concrete pipelines and surge tanks steel pipelines, sluice gates, steel surge (tanks), hydraulic control valves and other hydraulic works.

3.4

(d) Building and civil engineering works of permanent character, not mentioned above

 

 (i) Office & showrooms

3.02

(ii) Containing Thermo-electric generating plant

7.84

(iii) Containing Hydro-electric generating plant

3.4

(iv) Temporary erection such as wooden structures

33.4

(v) Roads other than Kutcha roads

3.02

(vi) Others

3.02

(e) Transformers, transformer (Kiosk) sub-station equipment & other fixed apparatus (including plant foundations)

 

 (i) Transformers (including foundations) having a rating of 100 kilo volt amperes and over

7.81

(ii) Others

7.84

(f) Switchgear including cable connections

7.84

(g) Lightning arrestor :

 

 (i) Station type

7.84

(ii) Pole type

12.77

(iii) Synchronous condenser

5.27

(h) Batteries

33.4

 (i) Underground cable including joint boxes and disconnectioned boxes

5.27

(ii) Cable duct system

3.02

 (i) Overhead lines including supports :

 

 (i) Lines on fabricated steel operating at nominal voltages higher than 66 kilo volts

5.27

(ii) Lines on steel supports operating at nominal voltages higher than 13.2 kilo volts but not exceeding 66 kilo volts

7.84

(iii) Lines on steel or reinforced concrete supports

7.84

(iv) Lines on treated wood supports

7.84

(j) Meters

12.77

(k) Self-propelled vehicles

33.40

(l) Air-conditioning plants :

 

 (i) Static

12.77

(ii) Portable

33.40

(m) (i) Office furniture and fittings

12.77

(ii) Office equipments

12.77

(iii) Internal wiring including fittings and apparatus

12.77

(iv) Street light fittings

12.77

(n) Apparatus let on hire

 

 (i) Other than motors

33.4

(ii) Motors

12.77

(o) Communication equipment :

 

 (i) Radio and high frequency carrier system

12.77

(ii) Telephone lines and telephones

12.77

(p) Any other assets not covered above

7.69