Units of Production Depreciation Calculator

Summary

The units of production depreciation method ties an asset's depreciation expense directly to its actual usage — the more units produced, the higher the depreciation charge for that period. This calculator takes the asset cost, salvage value, and total estimated units over the asset's life, then lets you enter actual units produced for each period to generate a complete depreciation schedule showing expense, accumulated depreciation, and book value per period. This method is especially useful for machinery and equipment whose wear is driven by production volume rather than the passage of time.

How it works

1. Enter the original purchase cost of the asset.
2. Enter the salvage value (expected residual value at end of life). Use 0 if none.
3. Enter the total estimated units the asset will produce over its entire useful life.
4. Add one or more periods with the actual units produced in each period.
5. The depreciation rate per unit is computed as (Cost - Salvage) / Total Estimated Units.
6. Each period's depreciation = Depreciation Rate per Unit × Units Produced that period.
7. View the full period-by-period schedule with accumulated depreciation and ending book value.

Use cases

• Calculating depreciation for manufacturing equipment based on machine hours or output.
• Depreciation of mining assets tied to tons of ore extracted.
• Vehicle depreciation based on miles or kilometers driven.
• Oil and gas well depletion calculated per barrel produced.
• Printing press depreciation based on impressions or print runs.
• Any asset whose wear correlates with usage volume rather than time.
• Preparing GAAP-compliant depreciation schedules for variable-use machinery.
• Comparing depreciation expense across high-output versus low-output periods.

Frequently Asked Questions