Differences between accounting and tax depreciation
The article 12.1 of the LIS establishes that the amounts that correspond to the effective depreciation of tangible fixed assets, intangible assets and real estate investments due to operation, use, enjoyment or obsolescence are deductible.And depreciation shall be deemed to be effective when:
Be the result of applying the coefficients of straight-line depreciation set out in the following table:
Element type Linear coefficient
Period of years
Civil works General civil engineering work 2 per 100 100 Pavements 6 per 100 34 Infrastructures and mining projects 7 per 100 30 Central Hydroelectric plants 2 per 100 100 Nuclear power plants 3 per 100 60 Coal plants 4 per 100 50 Renewable energy plants 7 per 100 30 Other power plants 5 per 100 40 Buildings Industrial buildings 3 per 100 68 Land dedicated exclusively to landfill 4 per 100 50 Stores and deposits (gases, liquids and solids) 7 per 100 30 Commercial, administrative and services buildings and dwellings 2 per 100 100 Facilities Substations.Transport and power distribution networks 5 per 100 40 Cables 7 per 100 30 Other facilities 10 per 100 20 Machinery 12 per 100 18 Medical and similar equipment 15 per 100 14 Transport elements Trains, carriages and traction equipment 8 per 100 25 Ships, aircrafts 10 per 100 20 Internal transport elements 10 per 100 20 External transport elements 16 per 100 14 Dumper trucks 20 per 100 10 Furniture and furnishings Furniture 10 per 100 20 Lingerie 25 per 100 8 Glassware 50 per 100 4 Chattels and tools 25 per 100 8 Moulds, patterns and models 33 per 100 6 Other household goods 15 per 100 14 Electronic and computer equipment.
Systems and programmes
Electronic equipment 20 per 100 10 Computer equipment 25 per 100 8 Systems and computer programs 33 per 100 6 Film, phonographic, video and audio-visual series productions 33 per 100 6
The coefficients and periods provided for in this point may be amended or additional coefficients and periods may be established by regulation.
Let it be the result of applying a given constant percentage on the outstanding depreciation value.
The constant percentage shall be determined by weighting the straight-line depreciation coefficient obtained from the depreciation period according to officially approved depreciation tables by the following coefficients:
- 1.5, if the item has a depreciation period of less than 5 years.
- 2, if the item has a depreciation period of 5 years or more but less than 8 years.
- 2.5, if the item has a depreciation period of 8 years or more.
The constant percentage may not be less than 11 percent.
Buildings, furniture and fixtures are not eligible for depreciation by a constant percentage.
Let be the result of applying the method of the digit numbers.This method is not applicable to buildings, furniture and fixtures.
It conforms to a plan formulated by the taxpayer and accepted by the tax administration.
The taxpayer can justify the amount.
Filling in form 200
In application of the provisions of this precept, the following adjustments will have to be made in the boxes  and  "Differences between accounting and tax depreciation (art. 12.1 LIS)" on page 12 of form 200:
When the accounting depreciation practised in the financial year by the taxpayer for any of the items referred to in Article 12.1 of the LIS is greater than the depreciation allowed for tax purposes according to the provisions of the aforementioned sections, the amount of this excess difference should be entered in the box  of increases.Likewise, when the item in subsequent tax periods is depreciated for accounting purposes, the amount of this difference should be entered in box  of decreases, as a result of the reversal of the positive adjustment, in accordance with the tax depreciation.
And in the event that the depreciation allowed for tax purposes is higher than the accounting depreciation practised by the taxpayer for the aforementioned items (and it is not the case of an accounting error), the amount of the corresponding difference should be entered in the box  of decreases.Likewise, when the item in subsequent tax periods is depreciated for tax purposes, the amount of this difference should be entered in box  of increases, as a result of the reversal of the negative adjustment, based on the accounting depreciation.