Farm Machinery Ownership Cost Calculator
The purchase check is only the start. Machinery commits capital and creates depreciation, interest, insurance, housing, repair, fuel, and labor costs. Spreading the annual total across realistic acres reveals whether a machine is earning its place.
Run your numbers
Example values are loaded to show how the tool works. Replace every field with your own records or planning assumptions. Nothing entered here leaves your browser.
What the assumptions produce
Straight-line economic depreciation.
Depreciation, interest, taxes, insurance, and housing.
Ownership plus entered repairs, fuel, and labor.
Total annual cost divided by annual acres.
How this calculator works
- 1Calculate straight-line depreciation from purchase price, expected salvage value, and years owned.
- 2Apply the opportunity interest rate and taxes-insurance-housing rate to average investment: (purchase + salvage) ÷ 2.
- 3Add repairs and per-acre fuel/labor, then divide by annual acres to expose utilization effects.
Reading the result
- Fixed ownership cost per acre falls as annual use increases, but repair, labor, timeliness, and field-loss risks may move differently.
- Straight-line depreciation is a planning method, not tax depreciation or a forecast of used-equipment prices.
- Compare the result with current local custom rates and with actual multi-year machinery records.
Reproduce the method
These are the specific public references used to define the calculation and its interpretation. Methodology reviewed August 15, 2026.
- Iowa State University Extension — Estimating Farm Machinery Costs
Depreciation, average investment, interest, and taxes-insurance-housing methodology.
- Iowa State University Extension — Machinery Selection
Ownership-cost categories and the effect of machinery size and utilization.
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