Car Total Cost of Ownership Calculator
Add up the real cost of owning a car — depreciation, financing, fuel, insurance, maintenance, and fees — over the years you keep it.
How to use this tool
- Enter the purchase price and expected resale value.
- Enter how many years you'll own the car.
- Add total finance interest (0 if paying cash).
- Enter annual fuel, insurance, maintenance, and fees.
- Read the total cost and the average per year and per month.
A car's price is just the beginning. This calculator adds depreciation, financing, fuel, insurance, maintenance, and fees to reveal the true cost of ownership over the years you keep it.
Formula
Total cost of ownership sums depreciation, financing, and operating costs:
Depreciation = Purchase price − Resale value
Operating = (Fuel + Insurance + Maintenance + Fees) × Years
Total cost = Depreciation + Finance interest + Operating
Per year = Total ÷ Years; per month = Total ÷ (Years × 12).
How it works
The sticker price is the smallest part of what a car costs. True cost of ownership rolls together the value the car loses (depreciation), the interest you pay to finance it, and every recurring operating cost — fuel, insurance, maintenance, registration, and fees — across the years you keep it. Depreciation and fuel usually dominate, which is why a cheap-to-buy car can be expensive to own.
This calculator treats depreciation as purchase price minus expected resale value, so a car that holds its value costs far less to own even at a higher purchase price. Operating costs are entered annually and multiplied by the ownership period; finance interest is added once as a lump sum. The result is shown as a total and broken down per year and per month for budgeting.
Use it to compare vehicles on a level field: a $25,000 car that depreciates fast and guzzles fuel can cost more over five years than a $35,000 car that holds value and sips fuel. AAA's annual 'Your Driving Costs' study is a good benchmark — it puts average ownership for a new car around $10,000-$12,000 per year. Refine each input with quotes specific to your vehicle and region.
Worked example
$35,000 car, $16,000 resale, 5 years, $3,500 interest
- Depreciation = $35,000 − $16,000 = $19,000.
- Annual operating = $2,000 fuel + $1,400 insurance + $1,000 maintenance + $600 fees = $5,000.
- Operating over 5 years = $5,000 × 5 = $25,000.
- Total cost = $19,000 + $3,500 interest + $25,000 = $47,500.
- Per year = $47,500 ÷ 5 = $9,500; per month = $47,500 ÷ 60 = $791.67.
Total cost of ownership $47,500.00 | Depreciation cost $19,000.00 | Average per year $9,500.00 | Average per month $791.67
Illustrative 5-year cost breakdown for a typical sedan
| Cost category | 5-year amount | Share |
|---|---|---|
| Depreciation | $16,000 | 40% |
| Fuel | $8,000 | 20% |
| Insurance | $7,000 | 17% |
| Maintenance & repairs | $5,000 | 12% |
| Taxes, fees & financing | $4,000 | 10% |
| Total 5-year cost | $40,000 | 100% |
Key terms
- Total cost of ownership (TCO)
- The complete cost of owning a vehicle over time — purchase-related depreciation and financing plus all operating costs.
- Depreciation
- The value a car loses while you own it, calculated here as purchase price minus resale value. Often the largest ownership cost.
- Operating costs
- Recurring costs of running the car: fuel, insurance, maintenance, repairs, registration, and fees.
- Resale value
- What the car is worth when you sell it; a higher resale value lowers the depreciation portion of TCO.
Frequently asked questions
- What is the total cost of owning a car?
- It's depreciation plus financing interest plus all operating costs (fuel, insurance, maintenance, fees) over the years you keep the car. For a typical new car, AAA estimates roughly $10,000-$12,000 per year.
- Why is depreciation the biggest cost?
- A new car can lose 40-50% of its value in five years. Because that loss is built into the price you paid, it's a real cost even though you never write a check for it — usually the single largest ownership expense.
- How can I lower my total cost of ownership?
- Buy a model that holds its value, keep the car longer to spread depreciation, pay cash or finance cheaply, shop insurance, and stay on top of maintenance to avoid major repairs.