Property, Plant, and Equipment: Acquisition and …
A useful rule of thumb for depreciation of plant and machinery is: Expense around 15-20% of the overall value per year. Fully write-off the assets over 5-7 years. For example, a piece of machinery that costs $100,000 would be depreciated over 5 years at 20% per year, meaning: Year 1: $20,000 depreciation expense.