How Much Car Can I Afford? A Practical Guide
The average new car in the United States costs over $48,000, and the average monthly car payment has crossed $730. For a lot of people, that car payment is the second-biggest bill after housing. And unlike a house, the thing you're making payments on loses value every month you own it.
Calculate Your Car Payment
Enter loan amount, rate, and term to see your monthly payment.
Use the Auto Loan CalculatorThe 20/4/10 Rule
The 20/4/10 rule is the best framework: 20% down (so you're not instantly underwater), 4-year max loan term (so you're not paying interest forever), and total car costs under 10% of gross monthly income (payment + insurance + gas). It's conservative. It will probably mean less car than the dealership says you can "afford." That's the point.
How Much Car at Different Incomes
| Annual Salary | Monthly Gross | Max Car Expense (10%) | Approx. Max Car Price |
|---|---|---|---|
| $40,000 | $3,333 | $333/mo | $16,000-18,000 |
| $60,000 | $5,000 | $500/mo | $24,000-27,000 |
| $80,000 | $6,667 | $667/mo | $32,000-36,000 |
| $100,000 | $8,333 | $833/mo | $40,000-45,000 |
| $150,000 | $12,500 | $1,250/mo | $55,000-65,000 |
These assume 20% down, 4-year loan at 6-7%, plus $150-200/month for insurance and gas. Your numbers will shift based on your credit score, the rate you actually get, and for, and your local insurance costs. Use the Car Affordability Calculator to get an exact figure based on your situation.
Why Loan Term Matters
The dealership will happily put you on a 72 or 84-month loan to make the monthly payment look manageable. Don't fall for it. On a $30,000 loan at 6.5%: 48 months costs $5,100 in interest. 72 months costs $7,800. 84 months costs $9,200. And with the longer term, you'll owe more than the car is worth for years. If you total it or need to sell, you're writing a check to get out of a car you don't own anymore. Run different scenarios with the Auto Loan Calculator.
The Hidden Costs of Car Ownership
The sticker price is just the beginning. Insurance averages $1,800-2,400 per year for full coverage, more for younger drivers and luxury vehicles. Gas or charging costs $100-250 per month depending on your commute and vehicle efficiency. Use the Fuel Cost Calculator to estimate yours. Maintenance and repairs run $100-150/month averaged over the car's life (more if you bought a BMW and you're now learning what BMW parts cost). Depreciation is the silent killer. A new car sheds ~20% in year one and ~40% by year three. That $48,000 car is worth $29,000 three years later. You don't get that $19,000 back.
New vs. Used: The Math
A 2-3 year old certified pre-owned car is the sweet spot. Someone else ate the depreciation. A $35,000 car is now $22,000-$25,000. You get 80% of the car for 65% of the price, usually with a manufacturer warranty still intact. The trade-off: used car loan rates run 1-2% higher, and you're limited to whatever's on the lot. But the math almost always favors used.
Your Debt-to-Income Ratio
Lenders look at your debt-to-income ratio (DTI): what percentage of your gross monthly income goes to all debt payments. Most auto lenders want you under 40-45% total. If your mortgage and student loans already eat 35% of your income, the math doesn't leave much room for a car payment. Check your current DTI with the Debt-to-Income Calculator.
What Car Fits Your Budget?
Enter your income, down payment, and expenses to find your number.
Use the Car Affordability CalculatorCar Buying FAQ
Know Your Budget Before You Shop
The best way to know what car you can afford is to track your actual monthly spending first. CMS Flow is a free budgeting app that shows you exactly how much room you've for a car payment.
Sources
Consumer Financial Protection Bureau (CFPB): CFPB auto loan guidance and buyer protections
Edmunds: Vehicle pricing and total cost of ownership data
Related Tools
Calculate your monthly car payment with the Auto Loan Calculator. Find what you can afford with the Car Affordability Calculator. Check your debt burden with the Debt-to-Income Calculator. Estimate gas costs with the Fuel Cost Calculator. See your take-home pay with the Paycheck Calculator.