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What is Straight Line Depreciation Method?
Depreciation is an accounting method of allocating the asset cost over a period of time.to treat the value of an asset acquired by the business. When an asset is acquired by a Company, it is not expensed all at once at the time of acquisition but it is divided over a period of time i.e. over its useful life. There are various types of depreciation method, however, the most common is the Straight line depreciation method.
In a straight line depreciation method, it is assumed that the asset uniformly depreciates over its useful life. The cost of the asset is evenly spread over its useful and functional life. Thus, the depreciation expense on the income statement remains the same for a particular asset over the period. As such the income statement is expensed evenly, so is the value of the asset on the balance sheet. The carrying amount of the asset on the balance sheet reduces by the same amount.
Colgate’s Straight Line Depreciation Method
source: Colgate SEC Filings
- Colgate follows the straight line method of depreciation. Its assets include Land, building, machinery and equipment, all of them are reported at costs.
- The useful life of machinery and equipment ranges from 3 to 15 years
- The useful life of the building is a bit longer at 40 years.
- Also, you should note that depreciation is not reported separately in Colgate. They are included either in Cost of Sales or Selling, general and admin expenses.
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Straight Line Depreciation Method Formula
Straight line depreciation method can be calculated using following formula:
Straight Line Depreciation Method Examples
Suppose a business has bought a machine for $ 10,000. They have estimated the useful life of the machine to be 8 years with a salvage value of $ 2,000.
Now, as per the straight line method of depreciation:
- Cost of the asset = $ 10,000
- Salvage Value = $ 2000
- Total Depreciation Cost = Cost of asset – Salvage Value = 10000 – 2000 = $ 8000
- Useful life of the asset = 8 years
Thus, annual depreciation cost = (Cost of asset – Salvage Cost)/Useful Life = 8000/8 = $ 1000
Hence, the Company will depreciate the machine by $1000 every year for 8 years.
- We can also calculate the depreciation rate, given the annual depreciation amount and the total depreciation amount which is annual depreciation amount/total depreciation amount
- Hence, depreciation rate = (annual depreciation amount/total depreciation amount)*100 = (1000/8000)*100 = 12.5%
Depreciation account of the balance sheet will look like below over the 8 years of the machine’s life:
Straight Line Method Depreciation Accounting
How to adjust the depreciation charges on the Balance sheet, Income statement and the cash flow statement?
As can be seen from the above table – At the end of 8 years i.e. after its useful life is over, the machine has depreciated to its salvage value.
- When the machine is bought for $ 10000; the cash and cash equivalents are reduced by $ 10000 and moved to Property, plant and equipment line of the balance sheet.
- At the same time, an outflow of $ 10000 is shown in the cash flow statement.
- Now, $ 1000 will be charged to the income statement as a depreciation expense for 8 continuous years. Although, all the amount is paid for the machine at the time of purchase, however, the expense is charged over a period of time.
- Every year $1000 is added to a contra account of balance sheet i.e. Property, plant, and equipment. This is called accumulated depreciation. This is to reduce any carrying value of the asset. Thus, after 1st year the accumulated depreciation will be $ 1000, after 2nd year it will be $ 2000 and so on…till the end of the 8th year, it will be $ 8000.
- After the useful life of the machine is over, the carrying value of the asset will be only $ 2000. The management will sell the asset and if it is sold above the salvage value a profit will be booked in the income statement or else a loss if sold below the salvage value. The amount earned after selling the asset will be shown as the cash inflow in the cash flow statement and same will be entered in the cash and cash equivalents line of the balance sheet.
Advantages of Straight Line Method of Depreciation
- It is the simplest method of depreciating an asset.
- It is most commonly used and easy to understand method.
- It does not involve complex calculations hence, chances of errors are less.
- Since, the asset is uniformly depreciated, it does not cause the variation in the Profit or loss due to depreciation expense while other depreciation methods can have an impact on Profit and Loss Statement variations .
Steps to Straight Line Depreciation Method
Let us now look at how the depreciation cost/expense is the straight line depreciation method, calculator. The straight line method of calculating straight line depreciation has following steps:
- Determine the initial cost of the asset at the time of purchasing.
- Determine the salvage value of the asset i.e. the value at which the asset can be sold or disposed of after its useful life is over.
- Determine the useful or functional life of the asset
- Calculate depreciation rate i.e. 1/useful life
- Multiply the depreciation rate by the cost of the asset minus the salvage cost
The value we get after following the above straight line method of depreciation steps is the depreciation expense which is deducted on income statement every year till the useful life of the asset.
Straight Line Depreciation Method – Final Thoughts
In the article, we have seen how the straight line depreciation method can be used to depreciate the value of the asset over the useful life of the asset. It is the easiest and simplest method of depreciation where the cost of the asset is depreciated uniformly over its useful life.
This has been a guide to Straight Line Depreciation method. In this, we discuss the Straight line method formula along with practical examples (Colgate). We also look at Straight Line Depreciation Accounting on the Income Statement, Balance Sheet and Cash Flows. You may also learn more about basic accounting from the following articles –