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How to Calculate Truck Operating Costs and Profitability: Complete Guide

March 20, 2026 16 min read by Kings Truck Team

Learning how to calculate truck operating costs and profitability is essential for any transport business owner who wants to stay in business. Many truck owners know their revenue but don’t truly understand their costs, leading to underpricing and eventual failure. This guide provides a systematic method to calculate all costs, determine your cost per kilometer, and set profitable rates.

The Two Types of Costs: Fixed vs Variable

Fixed costs remain the same regardless of how many kilometers you drive. Variable costs change with distance.

Fixed Costs (Annual)

Financing/loan repayment: Principal + interest payments
Insurance: Comprehensive or third-party
Licenses and permits: Road service license, transport permits
Depreciation: Loss of value over time (purchase price – expected resale) ÷ years owned
Management overhead: Portion of office costs, salaries
GPS tracking subscription: Annual fee
Parking/storage: If applicable

Variable Costs (Per Kilometer)

Fuel: Your biggest cost – calculate L/100km × fuel price
Tyres: Cost per set ÷ expected life in km
Maintenance and repairs: Oil changes, parts, labor – track average per km
Driver wages and allowances: Per diems, bonuses, salary per km
Consumables: AdBlue, grease, filters

Step-by-Step Cost Calculation

Step 1: Estimate Annual Distance

Most long-haul trucks in Africa do 100,000-150,000 km per year. Construction trucks (tippers) may do 50,000-80,000 km due to shorter hauls. Use a realistic figure for your operation.

Example: 120,000 km/year

Step 2: Calculate Fixed Costs Per Year

Fixed Cost Item	Annual Cost (USD)
Loan repayment ($50,000 @ 15% over 3 years)	$20,800
Insurance	$2,500
Licenses and permits	$800
Depreciation ($50,000 – $20,000 resale ÷ 5 years)	$6,000
GPS tracking	$300
Management overhead (allocated)	$2,000
Total Fixed Costs	$32,400

Step 3: Calculate Variable Costs Per Kilometer

Variable Cost Item	Calculation	Cost per km
Fuel	35 L/100km × $1.15/L ÷ 100	$0.4025
Tyres	$2,500 per set (10 tyres) ÷ 100,000 km	$0.025
Maintenance	Average from fleet data	$0.08
Driver wages	$1,800 per month ÷ 10,000 km/month	$0.18
Driver allowances	$300 per month ÷ 10,000 km	$0.03
Consumables	Estimate	$0.01
Total Variable Cost per km		$0.7275

Step 4: Calculate Fixed Cost Per Kilometer

Fixed cost per km = Total fixed costs ÷ Annual km

$32,400 ÷ 120,000 km = $0.27 per km

Step 5: Total Cost Per Kilometer

Total cost per km = Fixed cost per km + Variable cost per km

$0.27 + $0.7275 = $0.9975 per km (approximately $1.00/km)

Setting Your Rates

Now you know your cost is $1.00/km. To make a profit, you need to charge more. Typical profit margins in trucking are 15-25%.

20% profit margin → Rate = Cost ÷ (1 – 0.20) = $1.00 ÷ 0.80 = $1.25/km
25% profit margin → Rate = $1.00 ÷ 0.75 = $1.33/km

Break-Even Analysis

Break-even point = Total fixed costs ÷ (Revenue per km – Variable cost per km)

At $1.25/km revenue: $32,400 ÷ ($1.25 – $0.7275) = $32,400 ÷ $0.5225 = 62,000 km

You need to run 62,000 km per year just to cover fixed costs. Every km after that is pure profit.

Profit and Loss Statement for One Truck (Monthly)

Item	Calculation	Amount
Revenue	10,000 km × $1.25	$12,500
Fuel	10,000 km × $0.4025	($4,025)
Driver wages		($1,800)
Driver allowances		($300)
Maintenance (variable)	10,000 km × $0.08	($800)
Tyres reserve	10,000 km × $0.025	($250)
Consumables		($100)
Gross Profit		$5,225
Loan repayment	$20,800 ÷ 12	($1,733)
Insurance	$2,500 ÷ 12	($208)
Licenses	$800 ÷ 12	($67)
GPS	$300 ÷ 12	($25)
Management	$2,000 ÷ 12	($167)
Net Profit (before depreciation)		$3,025
Depreciation (non-cash)	$6,000 ÷ 12	($500)
Net Profit (after depreciation)		$2,525

Key Metrics to Track Per Truck

Revenue per km: Total revenue ÷ total km
Cost per km: Total costs ÷ total km
Profit per km: Revenue per km – Cost per km
Fuel efficiency: L/100km – track monthly
Maintenance cost per km: Should be consistent
Utilization rate: Loaded km ÷ total km (target >85%)
Deadhead percentage: Empty km ÷ total km (target <15%)

Industry Benchmarks (African Trucking)

Fuel: 35-45% of revenue
Driver: 10-15% of revenue
Maintenance: 8-12% of revenue
Tyres: 3-5% of revenue
Financing: 10-15% of revenue
Net profit margin: 15-25%

Financial Manager Tip: Track these metrics monthly for each truck. If a truck’s costs start rising, investigate immediately. Often it’s a driver issue or developing mechanical problem that can be fixed before it becomes major.

                ✅ Need help with your trucking finances? Contact us for a free consultation and our Excel cost calculator template.
            