What room the Main varieties of Depreciation Methods?

There room several varieties of depreciation expenseDepreciation ExpenseWhen a irreversible asset is purchased, it have to be capitalized rather of being expensed in the accounting period it is to buy in. And different formulas because that determining the publication valueBook ValueBook value is a company’s equity value as report in its jae won statements. The publication value figure is generally viewed in relation to the of an asset. The most common depreciation approaches include:

Straight-lineDouble declining balanceUnits that productionSum of years digits

Depreciation expense is provided in accounting to allocate the cost of a tangible assetTangible AssetsTangible assets are assets v a physical type and that organize value. Examples encompass property, plant, and equipment. Tangible assets space over its useful life. In various other words, it is the reduction in the value of one asset the occurs end time because of usage, wear and tear, or obsolescence. The 4 main depreciation techniques mentioned over are explained in information below.

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1. Straight-Line Depreciation Method

Straight-line depreciationStraight line DepreciationStraight line depreciation is the most commonly used and also easiest an approach for allocating depreciation of one asset. Through the right line is a really common, and the simplest, an approach of calculating depreciation expense. In straight-line depreciation, the expense amount is the same yearly over the advantageous life of the asset.

Depreciation Formula because that the straight Line Method:

Depreciation cost = (Cost – rescue value) / beneficial life


Consider a piece of devices that costs $25,000 v an estimated advantageous life that 8 years and also a $0 salvage value. The depreciation expense per year because that this equipment would be together follows:


Depreciation price = ($25,000 – $0) / 8 = $3,125 per year


2. Double Declining Balance Depreciation Method

Compared to various other depreciation methods, double-declining-balance depreciationDouble declining Balance DepreciationThe twin declining balance depreciation an approach is a form of sped up depreciation the doubles the constant depreciation approach. That is results in a bigger amount expensed in the previously years as opposed to the later on years of an asset’s beneficial life. The method reflects the reality that assets are typically an ext productive in their early on years 보다 in their later years – also, the practical truth that any type of asset (think of to buy a car) loses an ext of its value in the first couple of years of its use. V the double-declining-balance method, the depreciation variable is 2x the of the straight-line cost method.

Depreciation formula for the double-declining balance method:

Periodic Depreciation expense = beginning book value x rate of depreciation


Consider a item of property, plant, and equipment (PP&E)PP&E (Property, Plant and also Equipment)PP&E (Property, Plant, and Equipment) is just one of the core non-current assets discovered on the balance sheet. PP&E is impacted by Capex, that expenses $25,000, with an estimated useful life the 8 years and also a $2,500 rescue value. To calculate the double-declining balance depreciation, collection up a schedule:


The info on the schedule is described below:

The start book value of the asset is to fill in at the start of year 1 and also the salvage worth is fill in at the finish of year 8.The rate of depreciation (Rate) is calculated together follows:

Expense = (100% / advantageous life that asset) x 2

Expense = (100% / 8) x 2 = 25%

Note: due to the fact that this is a double-declining method, we multiply the rate of depreciation by 2.

3. Multiply the price of depreciation by the start book value to determine the cost for that year. Because that example, $25,000 x 25% = $6,250 depreciation expense.

4. Subtract the price from the beginning book value to arrive at the ending book value. Because that example, $25,000 – $6,250 = $18,750 ending book value at the finish of the first year.

5. The ending publication value for the year is the start book value for the following year. Because that example, the year 1 ending publication value of $18,750 would be the year 2 start book value. Repeat this until the last year of beneficial life.


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3. Units of production Depreciation Method

The units-of-production depreciation technique depreciates assets based upon the total number of hours supplied or the total number of units to be developed by using the asset, end its useful life.

The formula for the units-of-production method:

Depreciation price = (Number the units created / Life in variety of units) x (Cost – rescue value)


Consider a machine that expenses $25,000, through an estimated total unit manufacturing of 100 million and also a $0 rescue value. Throughout the an initial quarter of activity, the maker produced 4 million units.


To calculation the depreciation price using the formula above:

Depreciation price = (4 million / 100 million) x ($25,000 – $0) = $1,000


4. Sum-of-the-Years-Digits Depreciation Method

The sum-of-the-years-digits an approach is among the sped up depreciation methods. A greater expense is occurs in the early on years and also a lower expense in the latter years the the asset’s beneficial life.

In the sum-of-the-years number depreciation methodAccountingOur accounting guides and resources space self-study travel guide to learn bookkeeping and finance in ~ your very own pace. Browse hundreds of guides and also resources., the remaining life the an legacy is divided by the sum of the years and then multiplied by the depreciating basic to determine the depreciation expense.

The depreciation formula for the sum-of-the-years-digits method:

Depreciation cost = (Remaining life / amount of the year digits) x (Cost – salvage value)

Consider the following example to much more easily recognize the concept of the sum-of-the-years-digits depreciation method.


Consider a piece of devices that costs $25,000 and has one estimated advantageous life the 8 years and also a $0 salvage value. To calculation the sum-of-the-years-digits depreciation, set up a schedule:


The details in the schedule is explained below:

The depreciation base is consistent throughout the years and is calculated together follows:

Depreciation basic = cost – salvage value

Depreciation basic = $25,000 – $0 = $25,000

2. The continuing to be life is simply the continuing to be life that the asset. For example, at the start of the year, the asset has actually a continuing to be life of 8 years. The complying with year, the asset has a remaining life that 7 years, etc.

3. RL / SYD is “remaining life separated by sum of the years.” In this example, the asset has a useful life the 8 years. Therefore, the amount of the years would be 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 = 36 years. The remaining life in the beginning of year 1 is 8. Therefore, the RM / SYD = 8 / 36 = 0.2222.

4. The RL / SYD number is multiplied by the depreciating base to recognize the cost for the year.

5. The same is done for the complying with years. In the beginning of year 2, RL / SYD would be 7 / 36 = 0.1944. 0.1944 x $25,000 = $4,861 expense for year 2.


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Summary of Depreciation Methods

Below is the review of all four depreciation approaches from the examples above.


Here is a graph showing the publication value of one asset gradually with each various method.

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Here is a an introduction of the depreciation cost over time because that each that the 4 species of expense.


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