Units-of-production depreciation
Financial Accounting glossary · Assets: Cash, Receivables, Inventory, PP&E & Intangibles
Definition
Depreciation tied to actual usage: (Cost - Salvage) × (Period Output / Total Output).
Units-of-production depreciation in plain English
Depreciation is how a business spreads the cost of a big long-lasting item (like a machine) across the years it gets used, instead of dumping the whole cost in one year. Units-of-production ties that spreading to actual usage — a machine that works hard wears out faster, so it "costs" more that period. You first find the depreciable amount, Cost - Salvage (salvage is the leftover value you expect when you're done with it), then charge out a slice based on how much it produced: (Cost - Salvage) × (Period Output / Total Output). It's like a printer that's "worth" a set number of pages — each month's cost depends on how many pages you actually printed, not on the calendar.
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