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Businesses use various non-current assets such as machinery, vehicles, equipment, and buildings to support their operations. Over time, these assets lose value due to usage, age, and other factors. To reflect this reduction in value accurately, businesses record depreciation in their financial statements.
Depreciation helps ensure that the cost of an asset is allocated over its useful life, providing a more realistic view of a business’s financial performance and financial position.
Meaning of depreciation
Depreciation is the gradual reduction in the value of a non-current asset over time due to use, wear and tear, obsolescence, or the passage of time.
It represents the portion of an asset’s cost that is charged as an expense during an accounting period.
Causes of depreciation
1. Wear and tear
Assets such as machinery and vehicles deteriorate through regular use and operation.
2. Obsolescence
Technological advancements may make existing assets outdated or less efficient, reducing their value.
3. Passage of Time
Certain assets lose value simply because they age, even if they are not heavily used.
Methods of calculating depreciation
1. Straight-line method
The Straight-line method allocates an equal amount of depreciation expense each year over the asset’s useful life.
| Formula: Annual Depreciation = (Cost of Asset – Residual Value) ÷ Useful Life |
Example:
A machine costs $50,000, has a residual value of $5,000, and a useful life of 5 years.
Annual Depreciation = ($50,000 − $5,000) ÷ 5
= $9,000 per year
2. Units of Production Method
The Units of Production Method calculates depreciation based on the actual usage or output of the asset rather than the passage of time.
| Formula: Depreciation per Unit = (Cost of Asset – Residual Value) ÷ Estimated Total Units of Production Annual Depreciation = Depreciation per Unit × Units Produced During the Year |
Example:
A machine costs $100,000, has a residual value of $10,000, and is expected to produce 90,000 units during its lifetime.
Depreciation per Unit = ($100,000 − $10,000) ÷ 90,000
= $1 per unit
If the machine produces 12,000 units during the year:
Annual Depreciation: = 12,000 × $1
= $12,000
Thus, depreciation is the reduction in the value of a non-current asset over time. It helps businesses allocate the cost of assets fairly across their useful lives and provides a more accurate picture of profitability and asset values. The Straight-Line Method spreads depreciation evenly over time, while the Units of Production Method links depreciation to actual asset usage.
Quick Recap
- Depreciation is the gradual reduction in the value of a non-current asset over time.
- The main causes of depreciation are wear and tear, obsolescence, and the passage of time.
- Depreciation is recorded as an expense in the financial statements.
- Depreciation helps businesses allocate the cost of an asset over its useful life.
- The Straight-Line Method charges an equal amount of depreciation each year.
- Annual Depreciation = (Cost − Residual Value) ÷ Useful Life.
- The Units of Production Method calculates depreciation based on the actual usage or output of an asset.
- Depreciation per Unit = (Cost − Residual Value) ÷ Estimated Total Units, then multiply by units produced to find annual depreciation.
