In business accounting, not all costs are immediate. Some, like the purchase of machinery or vehicles, are investments that benefit the company over multiple years. This is where depreciation comes in. Depreciation is an accounting method used to spread the cost of a fixed asset over its useful life. It allows companies to account for the gradual reduction in an asset’s value due to usage, wear and tear, or obsolescence.
Depreciation refers to the reduction in the value of a tangible fixed asset over time. This concept is used in accounting to allocate the original cost of assets, such as equipment, buildings, and vehicles, over the periods they are expected to be in use. In simpler terms, it reflects how much of an asset’s value has been used up.
For instance, a business purchases a delivery truck for ₹6,00,000 with a useful life of 5 years and an expected scrap value of ₹1,00,000. It wouldn’t cost ₹6,00,000 in the first year. Instead, it would allocate ₹1,00,000 each year as depreciation.
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This is the most common and simple method. It spreads the asset cost evenly over its useful life.
Formula: (Cost of Asset – Salvage Value) ÷ Useful Life
Example: A laptop purchased for ₹60,000 with a salvage value of ₹6,000 and 3 years of life depreciates ₹18,000 annually.
This accelerated method depreciates more in the early years of the asset’s life. It’s ideal for fast-depreciating assets like electronics.
Example: A machine worth ₹1,00,000 depreciated at 20% results in ₹20,000 depreciation in year 1 and ₹16,000 in year 2 (20% of ₹80,000), and so on.
Here, depreciation depends on actual usage, not time. Great for manufacturing equipment.
Formula: (Cost – Salvage Value) ÷ Total Units × Units Produced This Year
Example: A machine worth ₹2,00,000 producing 2,000 of 10,000 units = ₹40,000 depreciation.
This method allocates higher depreciation early on but uses a fraction based on the sum of years. It’s another accelerated depreciation method.
Example: For a 5-year asset, depreciation fractions are 5/15, 4/15, … 1/15.
Straight-line depreciation is the simplest and most widely used method.
Formula: Annual Depreciation = (Cost – Salvage Value) / Useful Life
Example: A printer worth ₹50,000 with a salvage value of ₹5,000 and 5-year life:
(₹50,000 – ₹5,000) / 5 = ₹9,000 per year depreciation.
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Depreciation is a key concept in accounting that spreads the cost of assets over time. It ensures accurate financial reporting, reduces tax burden, and helps with future planning.
Choosing the right depreciation method—whether it’s straight-line, declining balance, or usage-based—depends on how the asset is used in your business. Applying it correctly supports smarter asset management and compliance.