Need for Depreciation

The need for depreciation is not just a matter of accounting convenience; it arises from three distinct pressures: conceptual logic, legal compulsion, and practical business reality. Each of these gives depreciation its standing as a genuine business expense, not an optional adjustment.

Conceptual necessity stems from the matching principle. A fixed asset (say, a machine) is bought to generate revenue over several years. If the entire cost of the machine were charged as an expense in the year of purchase, that year’s profit would be severely understated, while subsequent years — which also benefit from the machine — would show artificially high profits. Depreciation spreads the cost of the asset over its useful life, matching the expense against the revenue it helps earn. Without this, the profit figure for any single year would be misleading.

Legal necessity comes from company law. The Companies Act requires that before a company can declare a dividend, it must provide for depreciation on its fixed assets. This is a statutory safeguard: it prevents a company from distributing profits that are, in reality, a return of capital. By insisting on depreciation, the law ensures that the capital base of the company is maintained.

Practical business necessity is about asset replacement and capital maintenance. Over time, an asset wears out or becomes obsolete. If a business has not set aside funds through depreciation charges, it may not have the resources to replace the asset when it finally gives out. Depreciation, though a non-cash expense, reduces the profit available for distribution, thereby retaining cash within the business. This retained cash can be used to buy a new asset when the old one is retired.