Causes of Depreciation: Learning Objectives: What are the causes of definition? The main causes of depreciation may be divided into two categories, namely: Internal Cause and External Causes Internal Causes: Depreciation which occurs for certain inherent normal causes, is known as internal depreciation. The
Eflux of Time
The normal expiration of a lease due to the passage of time, rather than due to a specific event that might be the cause lease to end, such as destruction of the building.