Calculate the true annual cost of owning and operating farm equipment. This calculator accounts for depreciation, interest, insurance, repairs, fuel, and labor, then expresses the total as a cost per acre to help you evaluate machinery investments and compare ownership vs. custom hiring.
Enter purchase price, salvage value, useful life, interest rate, insurance, repair percentage, annual fuel and labor costs, and acres used per year. The calculator computes annual depreciation, interest, repairs, total annual cost, and cost per acre.
Annual Depreciation = (Purchase Price − Salvage Value) ÷ Useful Life (years)
Straight-line depreciation spreads the loss in value evenly over the equipment's useful life.
Annual Interest = [(Purchase + Salvage) ÷ 2] × Interest Rate%
Interest is calculated on the average investment value over the life of the machine.
Annual Repairs = Purchase Price × Repair %
Repair costs typically average 2-5% of purchase price annually, increasing as the machine ages.
Total Annual Cost = Depreciation + Interest + Insurance + Repairs + Fuel + Labor
Cost per Acre = Total Annual Cost ÷ Acres Used per Year
A tractor purchased for $250,000, salvage $50,000 after 10 years: Depreciation = (250,000 − 50,000) ÷ 10 = $20,000/year. Interest (6%) = [(250,000+50,000)÷2] × 0.06 = $9,000/year. Repairs (3%) = 250,000 × 0.03 = $7,500/year.
Insurance $2,500 + Fuel $15,000 + Labor $8,000. Total annual = 20,000+9,000+2,500+7,500+15,000+8,000 = $62,000/year. At 500 acres/year: $124/acre. Over 10 years: $620,000.
1. Enter the purchase price of the equipment. 2. Estimate salvage value (typically 10-30% of purchase for farm machinery after useful life). 3. Enter the expected useful life in years. 4. Enter your borrowing interest rate (or opportunity cost of capital). 5. Enter annual insurance premium. 6. Set repair percentage (2-5% of purchase is standard). 7. Enter estimated annual fuel and labor costs. 8. Enter acres used per year. Click Calculate.
Understanding equipment costs is essential for farm profitability. Machinery is typically the second-largest cost after land for many operations. The cost-per-acre figure helps you decide whether to own, lease, or custom-hire equipment. A general rule is that equipment should be used on enough acres to spread fixed costs — if a machine is used on fewer than 200-300 acres, custom hiring may be cheaper. Extension economists recommend updating these calculations annually as fuel prices, interest rates, and repair costs change.
Common mistakes: Underestimating repair costs — repairs increase significantly after the warranty period, often reaching 5-8% of purchase price annually for older machines. Forgetting interest on owned (paid-off) equipment — even if you paid cash, there's an opportunity cost. Using unrealistic salvage values — most farm equipment depreciates 30-50% in the first 3 years. Ignoring the cost of facilities (sheds, shops) needed to store and maintain equipment.
✓ Expert Reviewed: This calculator and its content have been reviewed by agricultural experts. Formulas are based on standard extension service recommendations.