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Depreciation: Units-of-Activity Method Business Forms

The estimated total output from the asset/machinery can be taken from the historical records for the same asset. The units produced will be for the calculation of depreciation cost period, usually on yearly basis. To start, a company must know an asset's cost, useful life, and salvage value. Then, it can calculate depreciation using a method suited to its accounting needs, asset type, asset lifespan, or the number of units produced. The units of production method assigns an equal expense rate to each unit produced. It's most useful where an asset's value lies in the number of units it produces or in how much it's used, rather than in its lifespan.


  • Since new assets such as vehicles and machinery lose more value in the first few years of their life the declining balance method of depreciation is sometimes more realistic.
  • In a year when 23,000 operations occur, the depreciation will be $46,000.
  • Suppose a company Green Star purchases a small food processing machine for $ 130,000.
  • The "declining-balance" refers to the asset's book value or carrying value (the asset's cost minus its accumulated depreciation).
  • This is due to the fact that output levels can vary significantly from year to year, making it difficult to create an accurate estimate.

Harold Averkamp (CPA, MBA) has worked as a university accounting instructor, accountant, and consultant for more than 25 years. That means our Net Book Value should never be lower than that amount. In this example, our Net Book Value is $860 if we continued with our factor. In the last year of depreciation, we throw out the formula and simply plug in the number that gets us to our salvage value. Plastic LTD purchases a steel mould costing $1 million to be used in the production of plastic glasses.


How to Calculate Units of Activity or Units of Production Depreciation


Large and tangible assets such as plants and machinery go through cyclic lives with fluctuating usage. The activity-based depreciation allows businesses to match these higher costs against the usage level of the asset. The activity-based depreciation method of assets takes into account the output of assets. It mainly differs from other methods of depreciation on the very nature of the cost spreading method.


  • Accruing tax liabilities in accounting involves recognizing and recording taxes that a company owes but has not yet paid.
  • Activities Based Depreciation allows the management to match between revenue and depreciation expense.
  • During the first year, the company manufactures 2 batches of glasses.
  • This differs from other depreciation methods where an asset's depreciable cost is used.

Units of Production Method may be appropriate where there is a high correlation between activity of an asset and its physical wear and tear. Activity-Based Depreciation expense is suitable for the assets which produce countable output. It is very popular for the plant and machinery in manufacturing as they are easily linked with production. The monthly accounting close process for a nonprofit organization involves a series of steps to ensure accurate and up-to-date financial records.


Methods of Depreciation


Many industries such as real estate do not incur changing output levels over time. Hence the activity-based depreciation method cannot be uniformly applied across all industries. The best use of the activity-based depreciation can be in a situation where the assets are utilized on calculable outputs.


Units of Production Depreciation Calculator


As with other depreciation methods, this method also comes with certain limitations. This formula is best for companies with assets that lose greater value in the early years and that want larger depreciation deductions sooner. This formula is best for small businesses seeking a simple method of depreciation.


The Formula for the Unit of Production Method Is


Usually, the manufacturing and processing businesses will prefer the unit of production depreciation method. For example, a machine may be depreciated on the basis of output produced during a period in proportion to its total expected production capacity. Therefore, useful life of an asset under Units of Production Method is stated in terms of production output or usage rather than years of service. The sum-of-the-years'-digits method (SYD) accelerates depreciation as well but less aggressively than the declining balance method. Annual depreciation is derived using the total of the number of years of the asset's useful life.



The formula determines the expense for the accounting period multiplied by the number of units produced. Depreciation is a crucial accounting concept that allocates the cost of an asset over its useful life. Various methods exist for calculating depreciation, and one such method is the Units of Activity Method. This method is particularly useful when an asset’s wear small business general ledger accounts examples and more and tear is directly related to the number of units it produces or the hours it operates. To simplify these complex calculations, the Units of Activity Method Calculator becomes an invaluable tool for businesses and accountants alike. The activity-based depreciation method is a depreciation method that links the costs of assets with their output levels over time.


Double-Declining-Balance (DDB) Depreciation


In DDB depreciation the asset's estimated salvage value is initially ignored in the calculations. However, the depreciation will stop when the asset's book value is equal to the estimated salvage value. We are tracking the loss in value using the Accumulated Depreciation contra asset account. When the entry is posted to the accounts, Depreciation Expense has increased and Accumulated Depreciation has increased. The new Accumulated Depreciation total then moves to the Balance Sheet where it shows the total reduction in the assets value from the time the asset was purchase. Oil PLC installs a crude oil processing plant costing $12 million with an estimated capacity to process 50 million barrels of crude oil during its entire life.