Depreciation and cost depletion are two accounting concepts that are not the same:
1. Depletion is nearly always calculated on the basis of production, whereas depreciation is calculated on the basis of time.
2. While several formulae are used to calculate depreciation, only one is employed in any way to calculate depletion.
3. Natural resources are subject to depletion, whereas plants and equipment are subject to depreciation.
4. Depletion relates to the asset's physical depletion or consumption, whereas depreciation refers to the asset's wear and tear and obsolescence.
5. Depreciation is frequently a compulsory deduction under legislation that premise the legitimacy of dividends on cumulative profits, whereas depletion is usually not.
6. Due to the increased uncertainty in predicting the productive life, the computation of the depletion rate is typically significantly less exact than the computation of depreciation rates.
7. A transitory disparity emerges from the timing of depreciation recognized under traditional accounting and under the Internal Revenue Code, resulting in the recording of deferred income taxes. The difference between cost depletion in traditional accounting and percentage depletion under the Internal Revenue Code, on the other hand, is permanent and does not need the recording of deferred income taxes.