Reasons for asset depreciation

Assets used in a business gradually lose value over time, which affects their recorded worth in financial accounts. This decline happens for specific reasons and applies to most types of assets.

Main causes of asset depreciation

• Wear and tear - Regular use causes physical deterioration, such as machinery breaking down or vehicles accumulating mileage.
• Obsolescence - Technological advancements can make assets outdated, reducing their usefulness even if they are still functional.

Nearly all fixed or non-current assets, such as equipment, vehicles, or buildings, will depreciate over time, except for land which typically increases in value.

The purpose and benefits of calculating depreciation

Depreciation is recorded as an expense in the annual statement of profit or loss, spreading the cost of an asset over its useful life. This accounting practice ensures accurate financial reporting.

Key benefits of recording depreciation

• Maintaining asset value on the statement of financial position - Assets keep a realistic book value until they are fully depreciated or sold, preventing overstatement of their worth.
• Accurate profit calculation - By deducting a portion of the asset's cost each year, profits are neither overstated in early years nor understated later, providing a true picture of financial performance.

Calculating net book value

The net book value represents the current worth of an asset after accounting for depreciation. It is an essential figure on the statement of financial position.

Formula for net book value

$\text{Net book value}=\text{original cost}-\text{accumulated depreciation}$

Where:

• Original cost = The initial purchase price of the asset (£)
• Accumulated depreciation = The total depreciation charged over the asset's life to date (£)

If an asset is sold for more than its net book value (which includes any expected residual value), a profit is recorded on the statement of profit or loss. If sold for less, a loss is recorded.

The straight line method of depreciation

The straight line method spreads the cost of an asset evenly over its expected useful life, making it a common choice for businesses.

Formula for straight line depreciation

$\text{Annual depreciation}=\frac{\text{original cost of asset}-\text{expected residual value}}{\text{expected useful life of asset (years)}}$

Where:

• Original cost of asset = The initial purchase price (£)
• Expected residual value = Estimated value at the end of useful life (£)
• Expected useful life of asset (years) = Number of years the asset is expected to be used

Information needed for calculation

• The original or historical cost of the asset.
• The expected useful life in years.
• An estimation of the residual value at the end of its life.

Worked example - Calculating annual depreciation using the straight line method

A café buys six new commercial coffee machines costing £1,800 each. They are expected to last eight years, with an estimated scrap value of £200 each at the end. Calculate the annual depreciation charge using the straight line method.

Step 1: Identify the values

• Total original cost = 6 × £1,800 = £10,800
• Total expected residual value = 6 × £200 = £1,200
• Expected useful life = 8 years

Step 2: Apply the formula

$\text{Annual depreciation}=\frac{\pounds \mathrm{10,800}-\pounds \mathrm{1,200}}{8}$

Step 3: Calculate the result

$\text{Annual depreciation}=\frac{\pounds \mathrm{9,600}}{8}=\pounds \mathrm{1,200}$

Evaluation of the straight line method

The straight line method has both advantages and limitations, making it suitable for some assets but not others.

Advantages of the straight line method

• Easy to calculate and understand, requiring straightforward arithmetic.
• Widely used by limited companies for its simplicity in financial reporting.

Limitations of the straight line method

• Relies on estimates for useful life and residual value, which may be inaccurate.
• Does not reflect faster depreciation in early years for some assets, like vehicles.
• Ignores rising repair and maintenance costs as assets age, potentially understating true expenses.

Impact of depreciation on financial statements

Recording depreciation affects key financial documents, influencing how a business's performance and position are viewed.

Effects on the statement of profit or loss

Depreciation reduces profit from operations by treating depreciation as an expense, ensuring profits reflect the true cost of using assets.

Effects on the statement of financial position

Depreciation lowers the net book value of non-current assets, providing a more accurate representation of their current worth.