Depreciation, a very commonly used term in the field of finance and accounting, in the simplest terms is used to denote the spreading of the cost of any asset or equipment over a span of many years. With time the value of every asset falls due to variety of reasons and through depreciation that fall is calculated and represented. The fall in value can be attributed to numerous factors like usage, time passed, obsolete technology, wear and tear, rusting, decay and the like.
The calculation of depreciation also becomes important because it eventually helps in assessing salvage value which is nothing but the estimated value of the equipment after its useful life is complete. This makes calculating the depreciation for any equipment an important exercise. Though there are many ways to calculate the depreciation of the equipment, two most commonly used methods are;
Both these methods are used quite extensively because they are effective and are useful in their own ways.
Straight-line Method:
This is one of the most commonly used methods of calculating depreciation. It is adopted when accumulated depreciation is to be found out. Accumulated depreciation is nothing but the cumulative depreciation of the equipment calculated up to a certain point in its life. To get the current accumulated depreciation for any point of time the depreciation for the previous period is simply added to the depreciation for that single period.
In the case of straight-line method the salvage value of the equipment at the end of that time span during which the revenues will be generated by using the equipment, is estimated. The savage value thus estimated may turn out to be zero or even negative. It thus gives an idea as to what the estimated value of the equipment would be at the time of disposing off the equipment.
It also shows the book value at any point of time as it is nothing but the difference between original cost of the equipment and its accumulated depreciation till that time.
Declining Balance Method:
It is a method used to calculate accelerated depreciation. The term accelerated depreciation comes into picture when higher deductions need to be made for the initial years of the total life span of an asset.
Declining balance method provides for higher depreciation charges for the very first year of the equipment’s life which subsequently falls with each passing year. It has become popular and useful as it gives a realistic idea about the actual benefits that are gained from using the equipment.
In this method the annual depreciation is calculated by multiplying the depreciation rate with the book value that the equipment had at the beginning of the year.
Both of these methods can be used for calculating the depreciation of the equipment over its useful life.