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Monthly Car Cost Calculator

Your loan payment is only part of what a car costs. Add insurance, fuel, maintenance, fees, and depreciation to see the real monthly number — the one your budget actually feels.

True total cost per month
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Fuel per month$0
Per year$0
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Tools · By Mustafa Bilgic · Last updated 20 June 2026

What goes into a real monthly car cost

Most people quote their car cost as the loan payment, but that is only the most visible line. The true monthly cost adds five more: insurance, fuel, maintenance and repairs, registration and fees, and depreciation. This calculator converts your annual figures to monthly, computes the fuel cost from your miles, MPG, and gas price, and sums everything into one honest number — then shows what share of it the loan payment actually represents (usually about half).

Worked example: A $450 loan payment, $135 insurance, $1,500/yr fuel ($125/mo), $900/yr maintenance ($75/mo), $200/yr fees ($17/mo), and $3,000/yr depreciation ($250/mo) total about $1,052 a month. The loan payment is only 43% of the real cost — the depreciation and fuel together rival it.

Why depreciation belongs in the number

Depreciation is the value your car loses each month. You do not write a check for it, but it is real money you lose at trade-in or sale, and for newer cars it is often the largest single cost — bigger than fuel or insurance. A simple estimate is the purchase price minus the car's expected resale value, divided by the number of months you will own it. Leaving it out is the number-one reason drivers think their car is cheaper than it is.

Budget rule of thumb: Keep total transportation costs under roughly 10–15% of gross income. If this monthly figure blows past that, a used or more efficient car frees up real money.

Sharpen each input

Estimate the fuel line with the fuel cost calculator and your real economy with the MPG calculator. Get the depreciation figure from the depreciation calculator, set the loan payment in the car loan calculator, and check the whole purchase against your budget with the affordability calculator. For a multi-year view, see the total cost of ownership calculator.

Frequently asked questions

What is the true monthly cost of owning a car?

The true monthly cost is far more than the loan payment. It is the loan payment plus insurance, fuel, maintenance and repairs, registration and fees, and the depreciation the car loses each month. For a typical financed car this often lands between 600 and 1,000 dollars a month once everything is counted, even when the loan payment alone is only 400 to 500. The hidden lines are insurance, fuel, and depreciation.

Should I include depreciation in my monthly cost?

Yes, if you want an honest figure. Depreciation is real money even though you do not write a check for it, because the car is worth less each month and you feel it when you sell or trade in. A reasonable estimate is the price minus expected resale value, divided by the months you will own it. Leaving depreciation out is the single most common reason people underestimate what their car costs.

How much of my income should a car cost each month?

A common guideline keeps total transportation costs, the loan payment plus insurance and fuel, under about 10 to 15 percent of your gross monthly income. The loan payment alone is often capped near 10 percent. If your all-in monthly figure pushes well past 15 percent of income, the car is stretching your budget and a cheaper or used vehicle may be the wiser choice.