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Composite Depreciation, Group Depreciation
Definition, Meaning Explained, Usage, Example Calculations

 

Calculating depreciation for every office equipment or furniture item individually can be labor intensive and tedious for accountants and auditors. Composite depreciation offers a simpler approach: An asset group depreciates as a whole.

Composite depreciation reduces overhead and helps avoid confusion.

What is Composite Depreciation?

In financial accounting, Composite Depreciation (or Group Depreciation) is a method for calculating and claiming depreciation expense. The Composite is method depreciates an entire group of related assets as a single entity rather than individually.

Examples below illustrates Composite calculations for an asset class "Office Equipment." For simplicity and clarity, the "Grande Corporation" example includes just a few asset items in only four asset categories. Note especially, however, that even a small group example shows clearly that composite depreciation serves two purposes:

  • Firstly, for asset owners, the composite approach reduces labor requirements for asset tracking and asset reporting.
  • Secondly, for those who evaluate financial statements—including auditors—composite methods reduce tedious detail and potential confusion.

Explaining Composite Depreciation in Context.

Examples below show how one firm uses composite methods for depreciating office equipment assets, but the same approach applies just as well to many other asset classes. Sections below explain group depreciation in context with realted terms including:

Composite Depreciation
Group Depreciation
Depreciation Schedule
Straight Line Method
Original Cost
Salvage Value
Depreciable Cost
Depreciable Life
Income Statement
Balance Sheet
Accumulated Depreciation
Capital Gains

 

Contents

Related Topics

  • For more on depreciation expense and depreciation schedules, see Depreciation.
  • For more on asset accounting and the asset life cycle, see Asset.

 

Composite Depreciation Calculation
Composite Depreciation for Office Equipment

As an example, suppose that Grande Corporation owns and uses a large number of expensive resources in quite a few different categories. Many resource items, moreover, qualify as Balance Sheet assets. And, for assets in certain categories, the firm's accountants calculate calculate and claim depreciation expense every year, while these assets serve out their depreciable lives. Normally, moreover, owners calculate and claim the expense separately for each eligible item.

For certain asset classes, however, the item-by-item approach presents accountants with a task that is especially labor-intensive. The task, moreover, can generate copious detail that has little or no value for owners, tax authorities, or auditors. "Office Equipment" is, arguably, an asset class of this kind. For large firms, Office Equipment assets may include hundreds or thousands of similar items, all serving a similar purpose for the business.

Nevertheless, one way or another, Grande corporation must calculate and claim depreciation expense for many Office Equipment items in these categories.

  • Laptop Computers
  • Copiers & Fax Machines
  • Printers
  • Telephone Switching Equipment

Fortunately, most companies can avoid the extra labor and confusion in such cases by turning to methods called Composite or Group Depreciation. Accounting practice almost everywhere must conform to country and international GAAP (Generally Accepted Accounting Principles). And, GAAP almost everywhere allows composite depreciation, whereby owners depreciate an entire asset group as a single entity.

Examples below illustrate the general approach and principles underlying this method. Before applying composite depreciation in the workplace, however, accountants should consult their own country tax authorities for application details.

Example Calculations

In this case, Grande's accountants designate the four asset categories as a single asset class called "Office Equipment." Group depreciation begins with a summary of depreciation information for assets in each of the four office equipment categories.

Office Equipment Assets Original
Cost
Salvage
Value
Depreciable
Cost
Depreciable
Life
SL Deprec.
per Year
Computers $65,000 $5,000 $60,000 3years $20,000
Copy/Fax Mach $12,000 $2,000 $10,000 6 years $2,000
Printers $6,000 $1,000 $5,000 5 years $1,000
Phone Switch Eq $93,000 $3,000 $90,000 9 years $10,000
Total $176,000 $11,000 $165,000 $33,000

Notice that composite depreciation will base calculations for all asset categories in the Office Equipment group on the straight line (SL) method. From these figures, the firm calculates a a composite rate and a composite life.

Composite rate = Total depreciation per year / Total original cost
                             =  $33,000 / $176,000
                             =  0.188

Composite life   = Total depreciable cost / Total depreciation per year
                             =  $165,000 / n$33,000
                             =  5.0

Composite depreciation expense each year equals the composite depreciation rate applied to the total historical cost. Here, assuming no assets join or leave the asset set, composite depreciation for each of five reporting years is:

Composite Depreciation Expense = (0.188 ) ($176,000) = $33,088

Reporting Composite Depreciation
Group Depreciation on Financial Statements

Depreciation is a mechanism by which owners turn asset purchase costs into expenses over a number of years. They charge the expense against income each year, as the assets are "used up" or "worn out" over their depreciable lives.

Depreciation expense serves in this way so that asset owners to apply a universally recognized principle in accrual accounting—the matching concept. "Matching" means:

  • Firms report incoming revenues in the period they actually earn them.
  • They report in the same period expenses incurred to earn them.

In brief, matching means that firms report revenues along with the expenses that brought them. The matching concept, in turn, supports accuracy in reporting profits.

Accounting transactions impact financial statements

It should be no surprise, therefore, that the process of turning asset purchase costs into expenses—depreciation—impacts the firm's primary financial accounting statements. Impact begins when firms "claim" or "charge" depreciation expense for the reporting period.

A single depreciation expense brings two accounting system transactions.

  • Firstly, a debit (decrease) in a Depreciation expense account. This is an Income statement account. This is also a non cash account, incidentally, but depreciation expense nevertheless lowers bottom line profits in the same way that other expenses lower profits.
  • Secondly, a credit (increase) to an Accumulated Depreciation account. This is a Balance sheet contra-asset account.

Income Statement
Group Depreciation on Income Statement

Composite depreciation—along with all other depreciation schedules and methods—results simply in expense figures. These impact the Income statement as debits to Depreciation expense accounts.

  • On detailed Income statements, firms may use several line items—Depreciation expense accounts—for different asset classes. They may, for instance, report depreciation expenses separately for asset groups such as Selling Equipment, Office Equipment, and Manufacturing Equipment.
  • Composite depreciation—like other depreciation expenses—has a position on the the Income statement consistent with the asset's role in the business:
    • Depreciation expense for Manufacturing equipment could appear above Gross Profit under "Manufacturing Overhead." In this case, depreciation expense impacts Gross Profit, as well as Operating Profit and Net Profit below.
    • Alternatively, depreciation expense could appear below Gross Profit but above Operating Profit.

      The $33,000 Office Equipment composite depreciation expense above might belong in that position. In that case, the depreciation expense impacts Operating Profit and bottom line Net Profit, but not Gross Profit.

In brief, depreciation expense lowers Income statement profits each year that owners claim it. There is a certain benefit to this, however. For companies that pay taxes on operating income, lower profits also mean a lower income tax liability. For this reason, depreciation expenses are said to bring tax savings.

Balance Sheet
Group Depreciation on Balance Sheet

In financial accounting, depreciation is an expense. And, Accountants define expense by referring to Balance sheet terms (1) Owners Equity and (2) Assets. The expense definition is as follows:

An expense is decrease in Owner's Equity caused by using up Assets.

Depreciation expense "uses up" assets by decreasing their Balance sheet book value. And, a decrease in the firm's overall book value means the same thing as a decrease in owner's equity.

The depreciation expense impacts the Balance sheet when it adds to the contra asset account Accumulated Depreciation. Each period of the asset's depreciable life, the firm subtracts Accumulated Depreciation from asset book value, thereby lowering overall book value.

What Happens if the Firm Removes Some Assets from the Group?

It is of course very likely that the firm will sell or otherwise dispose of some individual assets in the composite depreciation group during the 5 year period. In the case when an asset is sold:

  • The firm debits (increases) a cash account for the sales price received. This not necessarily the same as the original cost of the asset.
  • The firm credits (decreases) the asset account for the asset.
  • Anything remaining of the charge passes through to Accumulated Depreciation.

Composite depreciation does not allow recognition of any gains (capital gains) or losses (capital losses) on the sale of assets.

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