The determination of the reduction in the cost of natural resources due to extraction or removal is a critical accounting practice. This process, conceptually similar to depreciation for fixed assets, allocates the cost of the resource over its productive life. A common method involves dividing the initial cost by the estimated total units extractable to arrive at a per-unit figure. This per-unit rate is then multiplied by the number of units extracted during a given period to arrive at the period’s expense. For instance, if a mine costs $1,000,000 and is estimated to yield 200,000 tons of ore, the expense per ton is $5. If 20,000 tons are extracted in a year, the expense for that year is $100,000.
Accurate recording of this expense provides a more realistic view of a company’s profitability by matching costs with revenues earned from the sale of the extracted resources. It also impacts the balance sheet, reflecting the declining value of the resource asset. Historically, the establishment of standardized methods has allowed for greater transparency and comparability between companies in the natural resource sector, facilitating informed investment decisions and responsible resource management. The proper application of these calculations also influences tax liabilities, making accuracy paramount.