Depreciation

Schedule II useful lives beside Income Tax Act block rates, on the same asset, so the two answers can be read together.

Schedule II, Part C.

Companies Act method

Appendix I to the Income-tax Rules.

Blank if this asset is the whole block.

Additional depreciation

20% of cost on new plant and machinery in manufacturing. Not available under 115BAA or 115BAB.

Companies Act, Schedule II

₹58,127.85

Cost₹10,00,000.00
Residual valueCapped at 5% of cost by Schedule II.₹50,000.00
RateCost less residual, over 15 years.6.3333%
A full year₹63,333.33
Days heldPro-rated by days, not by months.335 of 365
Depreciation for the year₹58,127.85
Closing book value₹9,41,872.15

Income Tax Act, block of assets

₹1,50,000.00

On the addition at 15%Used 335 days.₹1,50,000.00
Depreciation for the year₹1,50,000.00
Closing WDV of the block₹8,50,000.00

The two figures answer different questions and are not meant to agree. Schedule II charges this asset over its life; the Act charges the block at a fixed rate.

How this worksShow

Two Acts that are not two methods

These are not the same calculation done twice. Schedule II depreciates an individual asset over a useful life, down to a residual value of at most 5% of cost, pro-rated by the days it was held. The Income Tax Act depreciates a block of assets at a prescribed rate, with no residual value at all and a half-year rule in the year of acquisition.

So the two figures differ, often by a factor of two or three, and neither is wrong. Plant costing ten lakh takes ₹63,333 of depreciation in the accounts and ₹1,50,000 in the tax computation, and the gap is a deferred tax entry rather than an error to be found.

Schedule II

On the straight line the residual comes off before dividing, not after. On the written down value there is no rate to look up: the rate is whatever reduces cost to the residual over the life, so a fifteen-year asset carries 18.1036% and a three-year one carries 63.16%. This page derives it, which means a change of life cannot leave a stale rate behind it.

Companies Act 2013
RuleFigureStatutory basis
Residual valueup to 5% of costSchedule II, note 5, Companies Act 2013
Straight line(cost − residual) ÷ lifeSchedule II, Part C, Companies Act 2013
Written down value1 − (residual ÷ cost)^(1÷life)Schedule II, Part C, Companies Act 2013
Part of a yearpro rata by daysSchedule II, note 2, Companies Act 2013
Buildings — RCC frame60 yearsSchedule II, Part C, Companies Act 2013
Buildings — other than RCC frame30 yearsSchedule II, Part C, Companies Act 2013
Factory buildings30 yearsSchedule II, Part C, Companies Act 2013
Plant and machinery — general15 yearsSchedule II, Part C, Companies Act 2013
Electrical installations and equipment10 yearsSchedule II, Part C, Companies Act 2013
Furniture and fittings10 yearsSchedule II, Part C, Companies Act 2013
Laboratory equipment10 yearsSchedule II, Part C, Companies Act 2013
Motor vehicles — not used for hire8 yearsSchedule II, Part C, Companies Act 2013
Motor buses and lorries used in a hire business6 yearsSchedule II, Part C, Companies Act 2013
Computers — servers and networks6 yearsSchedule II, Part C, Companies Act 2013
Office equipment5 yearsSchedule II, Part C, Companies Act 2013
Fences, wells and tube wells5 yearsSchedule II, Part C, Companies Act 2013
Computers — end-user devices3 yearsSchedule II, Part C, Companies Act 2013

The Income Tax Act, and the 180-day line

An asset put to use for fewer than 180 days in the year it was acquired gets half the rate. The rule reads “less than”, so an asset used for exactly 180 days gets the whole of it — which is the boundary most often got wrong, and it is worth checking against a calendar rather than counting months.

  • The halving applies only to the addition. Opening written down value always carries the full rate, whatever date those assets arrived.
  • Additional depreciation of 20% is available on new plant and machinery in manufacturing — and not to a company that has elected 115BAA or 115BAB. The regime is therefore an input to a depreciation calculation.
  • Where the addition is late in the year, the additional depreciation halves too and the other half is allowed the following year.
  • When a block ceases to exist, no depreciation is allowed at all and the difference falls under section 50 as a short term capital gain or loss.
Income-tax Rules, Appendix I
RuleFigureStatutory basis
MethodWDV on the blocks.32(1)(ii), Income-tax Act 1961; corresponding provision, Income-tax Act 2025 to be confirmed
Under 180 days in the year of acquisitionhalf the rateSecond proviso to s.32(1), Income-tax Act 1961; corresponding provision, Income-tax Act 2025 to be confirmed
Additional depreciation20% of costs.32(1)(iia), Income-tax Act 1961; corresponding provision, Income-tax Act 2025 to be confirmed
Block ceases to existno depreciations.50, Income-tax Act 1961; corresponding provision, Income-tax Act 2025 to be confirmed
Buildings — residential5%Appendix I, Income-tax Rules 1962, Income-tax Act 1961; corresponding provision, Income-tax Act 2025 to be confirmed
Buildings — other than residential10%Appendix I, Income-tax Rules 1962, Income-tax Act 1961; corresponding provision, Income-tax Act 2025 to be confirmed
Buildings — purely temporary structures40%Appendix I, Income-tax Rules 1962, Income-tax Act 1961; corresponding provision, Income-tax Act 2025 to be confirmed
Furniture and fittings10%Appendix I, Income-tax Rules 1962, Income-tax Act 1961; corresponding provision, Income-tax Act 2025 to be confirmed
Plant and machinery — general15%Appendix I, Income-tax Rules 1962, Income-tax Act 1961; corresponding provision, Income-tax Act 2025 to be confirmed
Motor cars15%Appendix I, Income-tax Rules 1962, Income-tax Act 1961; corresponding provision, Income-tax Act 2025 to be confirmed
Ships20%Appendix I, Income-tax Rules 1962, Income-tax Act 1961; corresponding provision, Income-tax Act 2025 to be confirmed
Intangible assets25%Appendix I, Income-tax Rules 1962, Income-tax Act 1961; corresponding provision, Income-tax Act 2025 to be confirmed
Computers, including software40%Appendix I, Income-tax Rules 1962, Income-tax Act 1961; corresponding provision, Income-tax Act 2025 to be confirmed
Aeroplanes and aero engines40%Appendix I, Income-tax Rules 1962, Income-tax Act 1961; corresponding provision, Income-tax Act 2025 to be confirmed

Rates and thresholds as at 10 September 2026. This page is an estimate, not professional advice, and it is not a filing.

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