Extempore

The purpose of recording depreciation as an expense over a period is to spread the initial purchase price of the fixed asset over its useful life. Each time a company prepares its financial statements, it records a depreciation expense to allocate the loss in value of the machines, equipment or cars it has purchased. However, unlike other expenses, depreciation expense is a "non-cash" charge. This simply means that no money is actually paid at the time in which the expense is incurred.”
Depreciation is a very real expense. Depreciation attempts to match up profit with the expense it took to generate that profit. This provides the most accurate picture of a company’s earning power. An investor who ignores the economic reality of depreciation expense will be apt to overvalue a business and find his or her returns lacking.
Depreciation appears in the profit and loss account under expenses – it reduces the profit for that year because some of the asset was used up in that time period.
• Annual depreciation is charged to the profit and loss account. It is an application of the accruals (‘matching’) concept, designed to spread the cost of fixed assets over their useful economic lives.

Amortization usually refers to spreading an intangible asset's cost over that asset's useful life. For example, a patent on a piece of medical equipment usually has a life of 17 years. The cost involved with creating the medical equipment is spread out over the life of the patent, with each portion being recorded as an expense on the company's income statement.

Depreciation, on the other hand, refers to prorating a tangible asset's cost over that asset's life. For example, an office building can be used for a number of years before it becomes run down and is sold. The cost of the building is spread out over the predicted life of the building, with a portion of the cost being expensed each accounting