# How to calculate depreciation expense reducing balance method

Learn how to calculate depreciation expense using the reducing balance method. This article outlines the steps and provides examples to help you understand the process.

depreciation, reducing balance method, accounting, business

## Introduction

As an asset ages, it loses value due to wear and tear, obsolescence, or other factors. Depreciation is the process of accounting for this loss of value over the useful life of the asset. Companies use various methods to calculate depreciation, including the reducing balance method. This article explains how to calculate depreciation expense using the reducing balance method.

## Understanding the Reducing Balance Method

The reducing balance method is a depreciation method that assumes an asset will depreciate more quickly in its earlier years and slower in its later years. This method allows for a larger depreciation expense in the earlier years of the asset’s life and a smaller expense in later years. The formula for the reducing balance method is: Depreciation expense = (Net book value at the beginning of the period) x (Depreciation rate).

## Determining the Asset’s Cost

To calculate depreciation expense using the reducing balance method, you first need to determine the cost of the asset. This includes the purchase price of the asset, as well as any additional costs associated with acquiring and preparing the asset for use.

## Determining the Asset’s Useful Life

The next step is to determine the asset’s useful life. This is the estimated length of time the asset will be useful to the business before it needs to be replaced. The useful life can vary depending on the type of asset and how frequently it is used.

## Determining the Salvage Value

The salvage value is the estimated amount of money the business will receive when the asset is sold or disposed of at the end of its useful life. It is important to consider the salvage value when calculating depreciation expense, as it will impact the net book value of the asset.

## Calculating the Depreciation Rate

The depreciation rate is calculated by dividing 1 by the useful life of the asset. For example, if an asset has a useful life of 5 years, the depreciation rate would be 1/5 or 0.20.

## Calculating the Beginning Net Book Value

The beginning net book value is the cost of the asset minus any accumulated depreciation. For the first year of an asset’s life, the beginning net book value will be equal to the cost of the asset. For subsequent years, it will be equal to the previous year’s ending net book value.

## Calculating Depreciation Expense

To calculate depreciation expense using the reducing balance method, multiply the beginning net book value by the depreciation rate. For example, if an asset has a cost of \$10,000, a useful life of 5 years, and a salvage value of \$500, the depreciation rate would be 0.20. In the first year, the depreciation expense would be \$2,000 (0.20 x \$10,000).

## Calculating the Ending Net Book Value

The ending net book value is equal to the beginning net book value minus the depreciation expense. For example, if an asset has a beginning net book value of \$10,000 and a depreciation expense of \$2,000, the ending net book value for the first year would be \$8,000.

## Repeating the Calculation

To calculate depreciation expense for subsequent years, repeat the calculation using the ending net book value from the previous year as the beginning net book value for the current year. The depreciation rate will remain the same, but the depreciation expense will decrease as the asset’s net book value decreases.

## Considering the Half-Year Convention

In some cases, businesses may use the half-year convention when calculating depreciation expense using the reducing balance method. This convention assumes that an asset is purchased halfway through the year, regardless of when it was actually purchased. This means that the depreciation rate is multiplied by 0.50 for the first year of depreciation.

## Adjusting for the Salvage Value

When an asset reaches the end of its useful life, the net book value should equal the salvage value. If it does not, the business will need to adjust the depreciation expense in the final year to account for the difference. This is done by subtracting the salvage value from the net book value and multiplying the result by the depreciation rate.

## Calculating Depreciation Expense for Tax Purposes

It is important to note that the calculation of depreciation expense for tax purposes may differ from the calculation used for financial reporting. Businesses should consult with their tax professional to determine the appropriate method for tax purposes.

## Example Calculation

To illustrate the process, let’s use the example of a computer that has a cost of \$2,000, a useful life of 3 years, and a salvage value of \$500. In the first year, the depreciation rate would be 1/3 or 0.33. The beginning net book value would be \$2,000, and the depreciation expense would be \$660 (0.33 x \$2,000). The ending net book value for the first year would be \$1,340 (\$2,000 - \$660). In the second year, the beginning net book value would be \$1,340, and the depreciation rate would still be 0.33. The depreciation expense for the second year would be \$442.20 (0.33 x \$1,340), and the ending net book value for the second year would be \$897.80 (\$1,340 - \$442.20). The process would be repeated for the third year, with a beginning net book value of \$897.80 and a depreciation expense of \$294.99 (0.33 x \$897.80). The ending net book value for the third year would be \$602.81 (\$897.80 - \$294.99), which is equal to the salvage value of \$500 plus a small remaining amount of \$102.81.

## Conclusion

The reducing balance method is a useful tool for businesses to calculate depreciation expense. By following the steps outlined in this article, you can calculate depreciation using this method and gain a clearer understanding of the value of your assets over time.

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