As per the Income-tax act, solar panels are categorized under the heading renewal energy devices. The rate of depreciation for these devices is mentioned below. As per the act, the rate of depreciation for solar panels is given as 40% as per the WDV method. Generally, these devices are treated as inRead more
As per the Income-tax act, solar panels are categorized under the heading renewal energy devices. The rate of depreciation for these devices is mentioned below.

As per the act, the rate of depreciation for solar panels is given as 40% as per the WDV method. Generally, these devices are treated as investments in fixed assets. Therefore they are treated accordingly like other fixed assets and are depreciated periodically in an organized and regular time period. The useful life of such solar devices is taken to be 5 years.
Giving you a small example of the depreciation on solar panels.
Solar panels were purchased by Agro Farm ltd. for installing them to be used for electricity generation. These panels were bought for Rs 2,00,000. Therefore depreciation to be charged as per income tax act over its useful life of 5 years is as follows:
Depreciation as per WDV = (Cost of an asset – salvage value)* rate of depreciation
Depreciation for 1st year = (2,00,000 – 0)* 40% = Rs 80,000
WDV at the end of 1st year = (2,00,000 – 80,000) = Rs 1,20,000
Depreciation for 2nd year = (1,20,000 – 0)* 40% = Rs 48,000
the same process will continue till the useful life of an asset.
The depreciation amount will be written off from the book value as shown below:
| Useful life | Value at the beginning of the year | Depreciation amount | Value at the end of the period |
| 1 | 2,00,000 | 80,000 | 1,20,000 |
| 2 | 1,20,000 | 48,000 | 72,000 |
| 3 | 72,000 | 28,800 | 43,200 |
| 4 | 43,200 | 17,280 | 25,920 |
| 5 | 25,920 | 10,368 | 15,552 |
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Let us first understand the concepts of Amortization and Impairment. Amortization refers to the expense recorded on the decline of the value of intangible assets of a company. Intangible assets include goodwill, patents, copyrights, etc. It reflects the reduction in the value of Intangible assets ovRead more
Let us first understand the concepts of Amortization and Impairment.
Amortization refers to the expense recorded on the decline of the value of intangible assets of a company. Intangible assets include goodwill, patents, copyrights, etc. It reflects the reduction in the value of Intangible assets over its life span.
Amortization is similar to Depreciation, however, while depreciation is over tangible assets amortization is over Intangible assets of the company.
For example, Cipla Ltd. acquired a patent over a new drug for a period of 10 years. The cost of creating the new drug was 80,000 and the company must record its patent at 80,000. However, the company must amortize this cost by dividing the cost over the patent’s life, i.e., the amortization cost would be 8,000 (80,000/10) p.a. for the next 10 years.
Impairment means a decline in the value of fixed assets due to unforeseen circumstances. Assets are impaired when the carrying value of assets increases its market value or “realizable value” and such increase is recorded as an impairment loss.
Now suppose, Cipla Ltd. had existing machinery which suffered physical damage and is recorded at 50,000 in the books but the realizable value of the asset would only be 20,000. Hence, the asset would be written down to 20,000 and an impairment loss of 30,000 will be recorded.
Impairment Vs Amortization
Differences between the two can be shown as follows:
Suppose Unilever Ltd. has a patent over one of its products for a period of 5 years. The cost of the patent was 1,00,000. Then after 2 years one of its rivals, say ITC Ltd., launches a new product which is more preferred by the consumers over the one produced by Unilever Ltd. and the fair market value of the patent of Unilever Ltd. changes to 10,000.
Now in this scenario, Unilever Ltd. would have amortized the patent (costing 1,00,000) at 20,000 (1,00,000/5) p.a. for 2 years and the book value at the end of the 2nd year is 60,000 (1,00,000 – 40,000). Now due to the new launch by ITC Ltd. the drastic change in the value of the asset from the book value of 60,000 to the realizable value of 10,000 will be recorded as an Impairment loss. Hence Impairment loss would be recorded at 50,000 (60,000 – 10,000).
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