What are the Main Types of Depreciation Methods?

Tright here are a number of forms of depreciation expenseDepreciation ExpenseWhen a irreversible ascollection is purchased, it must be capitalized rather of being expensed in the accounting duration it is purchased in. and various formulas for determining the book valuePublication ValueBook worth is a company’s equity value as reported in its financial statements. The book value figure is generally regarded in relation to the of an asset. The the majority of prevalent depreciation methods include:

Straight-lineDouble declining balanceUnits of productionSum of years digits

Depreciation price is used in bookkeeping to alfind the expense of a tangible assetTangible AssetsTangible assets are assets with a physical develop and that organize value. Examples encompass home, plant, and also equipment. Tangible assets are over its advantageous life. In various other words, it is the reduction in the value of an asset that occurs over time as a result of usage, wear and also tear, or obsolescence. The 4 main depreciation techniques discussed over are defined in detail listed below.

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1. Straight-Line Depreciation Method

Straight-line depreciationStraight Line DepreciationStraight line depreciation is the the majority of typically offered and most basic method for allocating depreciation of an asset. With the straight line is an extremely widespread, and the most basic, method of calculating depreciation cost. In straight-line depreciation, the cost amount is the very same every year over the helpful life of the ascollection.

Depreciation Formula for the Straight Line Method:

Depreciation Expense = (Cost – Salvage value) / Useful life


Consider a item of devices that expenses $25,000 through an approximated helpful life of 8 years and also a $0 salvage worth. The depreciation expense per year for this devices would certainly be as follows:


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


2. Double Declining Balance Depreciation Method

Compared to other depreciation techniques, double-declining-balance depreciationDouble Declining Balance DepreciationThe double decreasing balance depreciation approach is a kind of accelerated depreciation that doubles the constant depreciation strategy. It is outcomes in a bigger amount expensed in the previously years as opposed to the later years of an asset’s useful life. The approach shows the reality that assets are frequently more productive in their at an early stage years than in their later years – additionally, the valuable truth that any kind of asset (think of buying a car) loses more of its value in the first few years of its use. With the double-declining-balance method, the depreciation element is 2x that of the straight-line cost approach.

Depreciation formula for the double-declining balance method:

Periodic Depreciation Expense = Beginning book worth x Rate of depreciation


Consider a piece of property, plant, and tools (PP&E)PP&E (Property, Plant and also Equipment)PP&E (Property, Plant, and also Equipment) is one of the core non-current assets found on the balance sheet. PP&E is impacted by Capex, that expenses $25,000, with an estimated beneficial life of 8 years and a $2,500 salvage worth. To calculate the double-decreasing balance depreciation, put up a schedule:


The information on the schedule is explained below:

The beginning book value of the asset is filled in at the start of year 1 and the salvage value is filled in at the finish of year 8.The price of depreciation (Rate) is calculated as follows:

Expense = (100% / Useful life of asset) x 2

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

Note: Because this is a double-declining method, we multiply the price of depreciation by 2.

3. Multiply the rate of depreciation by the beginning book value to recognize the price for that year. For example, $25,000 x 25% = $6,250 depreciation price.

4. Subtract the expense from the beginning book value to arrive at the ending book worth. For instance, $25,000 – $6,250 = $18,750 finishing book worth at the end of the first year.

5. The finishing book worth for that year is the beginning book worth for the following year. For instance, the year 1 finishing book worth of $18,750 would certainly be the year 2 beginning book worth. Repeat this until the last year of helpful life.


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3. Units of Production Depreciation Method

The units-of-production depreciation approach depreciates assets based upon the complete number of hrs supplied or the full variety of units to be developed by using the asset, over its valuable life.

The formula for the units-of-production method:

Depreciation Expense = (Number of devices produced / Life in number of units) x (Cost – Salvage value)


Consider a machine that costs $25,000, through an approximated complete unit manufacturing of 100 million and a $0 salvage value. During the initially quarter of task, the machine developed 4 million systems.


To calculate the depreciation expense using the formula above:

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


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

The sum-of-the-years-digits method is one of the accelerated depreciation approaches. A higher cost is incurred in the beforehand years and a lower cost in the latter years of the asset’s helpful life.

In the sum-of-the-years digits depreciation methodAccountingOur Accounting guides and also resources are self-research guides to learn accountancy and finance at your very own pace. Browse thousands of guides and also resources., the staying life of an asset is separated by the sum of the years and then multiplied by the depreciating base to determine the depreciation expense.

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

Depreciation Expense = (Remaining life / Sum of the years digits) x (Cost – Salvage value)

Consider the following instance to more easily understand also the principle of the sum-of-the-years-digits depreciation strategy.


Consider a item of devices that prices $25,000 and also has actually an estimated valuable life of 8 years and also a $0 salvage worth. To calculate the sum-of-the-years-digits depreciation, erected a schedule:


The indevelopment in the schedule is explained below:

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

Depreciation Base = Cost – Salvage value

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

2. The staying life is simply the continuing to be life of the ascollection. For instance, at the beginning of the year, the ascollection has a remaining life of 8 years. The complying with year, the asset has a remaining life of 7 years, and so on.

3. RL / SYD is “remaining life divided by amount of the years.” In this instance, the ascollection has actually a useful life of 8 years. As such, the amount of the years would be 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 = 36 years. The staying life in the start of year 1 is 8. Thus, the RM / SYD = 8 / 36 = 0.2222.

4. The RL / SYD number is multiplied by the depreciating base to determine the price for that year.

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


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Synopsis of Depreciation Methods

Below is the summary of all four depreciation methods from the examples over.


Here is a graph mirroring the book value of an ascollection over time with each different approach.

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Here is an overview of the depreciation expense over time for each of the 4 types of expense.


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