How much car can I afford on my income?

A common, conservative guideline keeps your car payment within 10 to 15 percent of gross income. This calculator turns that payment budget into an affordable price for your rate and term, then shows the all-in cost with insurance and fuel so you can judge it against your whole budget. Keep your other debts in mind too, since they compete for the same income.

Why is the all-in monthly cost higher than my payment budget?

Because the payment budget covers only the loan, while owning a car also costs insurance, fuel, and maintenance. The calculator sizes the price to your loan-payment budget, then adds those running costs to show the real monthly commitment, which is often a few hundred dollars more than the loan payment alone.

Should I spend up to the affordable price?

Not necessarily. The affordable price is a ceiling from a guideline, not a target. Spending less leaves room for the running costs, keeps you from going underwater as the car depreciates, and protects your other goals. Many people are better off buying below what the guideline allows, especially with a used car.

How does the loan term change what I can afford?

A longer term lowers the monthly payment, so the same budget appears to afford a higher price. But it also means more total interest and a longer time owing more than the car is worth. Stretching the term to afford a pricier car is usually a sign the car is too expensive, not that you can comfortably afford it.

Car Affordability Calculator

Estimate how much car you can afford from your income, down payment, rate, term, and a payment-to-income guideline, then see the all-in monthly cost and total cost of ownership.

How much car you can afford starts with how much of your income can go to a car payment. A common, conservative guideline keeps the payment within 10 to 15 percent of gross income. This calculator turns that payment budget into an affordable vehicle price for your rate and term, then adds insurance, fuel, and maintenance to show the all-in monthly cost and the total cost of owning the car, so the answer reflects more than the loan payment.

Gross annual income

Your income before taxes.

Max car payment as % of income

The share of gross monthly income your car payment should stay within. 10 to 15 percent is a common, conservative guideline. Remember the all-in cost with insurance and fuel runs higher.

Down payment

Cash you put toward the car. It raises the price you can afford for the same payment.

Interest rate (APR)

The annual percentage rate you expect on the loan.

Loan term

months

How long you would finance, in months. A longer term raises the price you can afford for a given payment but costs more interest.

Sales tax

Sales tax on the purchase. It is part of the financed amount, so it lowers the price you can afford.

Insurance per year

Estimated annual insurance, included in the all-in monthly cost and total cost of ownership.

Fuel per month

Estimated monthly fuel or charging, included in the all-in monthly cost.

Maintenance per year

Estimated annual maintenance and repairs, included in the all-in monthly cost.

X f in

Affordable vehicle price

$54,501.99

The price you can finance with your payment budget, down payment, rate, and term, including sales tax in the financed amount.

Monthly payment budget: $1,000.00
Amount financed: $50,501.99
All-in monthly cost: $1,366.67
Total cost over the term: $86,000.00
Estimated value at term end: $22,760.30

Vehicle value vs. loan balance

Assumptions

The payment budget is your gross monthly income times the payment-to-income percentage you set. A common, conservative guideline keeps a car payment within 10 to 15 percent of gross income. This budgets the loan payment only; you should also keep all your debts together within a sensible share of income, which this tool does not check.
The affordable price is found by inverting the standard loan-payment formula: the budget is converted to the loan it supports at your rate and term, then the price is backed out by adding your down payment and removing sales tax from the financed amount. The financed amount is price plus sales tax minus the down payment.
The all-in monthly cost adds estimated insurance, fuel, and maintenance to the loan payment, so it is higher than the payment budget, which covers only the loan. Total cost of ownership is the down payment plus all loan payments and running costs over the term.
The estimated value at term end uses a declining-balance depreciation curve (a heavier first year, then a steady annual drop). Real depreciation varies widely by make, model, mileage, and condition, so treat resale and the value-versus-balance chart as rough.
Insurance, fuel, and maintenance are your estimates and vary a lot by driver, vehicle, and location. The rate is assumed fixed and the term is treated as a whole number of months. Not modeled: registration and fees, gap or warranty add-ons, and taxes beyond the sales tax entered.
This is an estimate for educational purposes only, not financial advice and not a loan offer. Affordability guidelines are rules of thumb, not limits a lender will use, and you may comfortably afford less than a guideline suggests. Keep your emergency fund intact when buying.

How it works

This works backward from a payment budget to a price, then forward to the full cost of ownership.

First, the payment budget. A common, conservative guideline keeps a car payment within 10 to 15 percent of gross income:

payment budget = gross monthly income times the payment percentage

Next, the affordable price. The payment budget is converted into the loan it can support by inverting the standard loan-payment formula, loan = payment budget divided by the monthly payment factor, where the factor is r(1+r)^n / ((1+r)^n − 1) for your rate and term. The price is then backed out of the financed amount, since financed = price + sales tax − down payment:

affordable price = (loan + down payment) divided by (1 + sales tax rate)

Finally, the affordable price is run through a full ownership model to add insurance, fuel, and maintenance to the loan payment (the all-in monthly cost) and to total the cost over the loan term, including a depreciation curve for the resale value.

Worked example

$80,000 income, a 15 percent payment guideline, $4,000 down, 7 percent APR over 60 months, no sales tax:

Payment budget: $80,000 divided by 12, times 15 percent = $1,000 a month.
That payment supports a loan of about $50,502 at 7 percent over 60 months.
Affordable price: $50,502 + $4,000 down = about $54,502.
All-in monthly cost with $1,800 a year insurance, $150 a month fuel, and $800 a year maintenance: about $1,367, well above the $1,000 loan budget.
Total cost over the 5-year term: about $86,000.

The gap between the $1,000 payment budget and the $1,367 all-in cost is the point: the loan payment is only part of what a car costs each month.

Scope and limitations

The payment budget covers the loan only; you should also keep all your debts together within a sensible share of income, which this tool does not check. Insurance, fuel, and maintenance are your estimates and vary widely. Depreciation uses a declining-balance curve and is a rough estimate. Affordability guidelines are rules of thumb, not lender limits, and you may comfortably afford less than a guideline allows. Keep your emergency fund intact when buying. This is an estimate for education, not financial advice.

Sources

Consumer Financial Protection Bureau: auto loans and budgeting for the full cost
CFPB: questions to ask before taking on a car payment
Common guidance: keep a car payment within 10 to 15 percent of gross income and total transportation costs modest.

Frequently asked questions

How much car can I afford on my income?: A common, conservative guideline keeps your car payment within 10 to 15 percent of gross income. This calculator turns that payment budget into an affordable price for your rate and term, then shows the all-in cost with insurance and fuel so you can judge it against your whole budget. Keep your other debts in mind too, since they compete for the same income.
Why is the all-in monthly cost higher than my payment budget?: Because the payment budget covers only the loan, while owning a car also costs insurance, fuel, and maintenance. The calculator sizes the price to your loan-payment budget, then adds those running costs to show the real monthly commitment, which is often a few hundred dollars more than the loan payment alone.
Should I spend up to the affordable price?: Not necessarily. The affordable price is a ceiling from a guideline, not a target. Spending less leaves room for the running costs, keeps you from going underwater as the car depreciates, and protects your other goals. Many people are better off buying below what the guideline allows, especially with a used car.
How does the loan term change what I can afford?: A longer term lowers the monthly payment, so the same budget appears to afford a higher price. But it also means more total interest and a longer time owing more than the car is worth. Stretching the term to afford a pricier car is usually a sign the car is too expensive, not that you can comfortably afford it.

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Learn how this works

New to this topic? Our companion guide explains it in plain language: Should You Buy or Lease a Car?

Last reviewed June 2026.