Skip the dealer's "what monthly payment fits?" trap. Enter your income and budget to see the real car price you can afford — using the proven 20/4/10 rule.
Walk into a dealership and the first thing you'll hear is "what monthly payment are you comfortable with?" It sounds helpful. It's actually the setup for the oldest trick in car sales: once they have your target payment, they can fit almost any car into it by stretching the loan to six, seven, even eight years. The payment drops, you drive off happy, and you quietly pay thousands more in interest while owing more than the car is worth for years. This calculator flips it around — it starts from what you actually earn and works out the price, not the other way around.
It's the simplest guardrail in personal finance for cars. 20% down means you're not underwater the second you drive off the lot, and it lowers your loan. 4 years (48 months) max keeps you from the long-loan trap and means you own the car free and clear while it still has plenty of life left. 10% of your gross income as the ceiling for total car costs — payment plus insurance — keeps the car from crowding out rent, savings, and everything else. Hit all three and a car almost never becomes a financial problem.
The sticker price and the loan are only part of owning a car. Insurance can run $100–250+ a month depending on the car and your record — that's why this tool lets you carve it out of your budget up front. Then there's fuel, maintenance, registration, and depreciation. A good habit: the more expensive and powerful the car, the more all of those numbers climb together. A car you can technically finance isn't the same as a car you can comfortably run.
The number this tool gives you is a ceiling, not a target. The people who stay out of car trouble almost always buy somewhat below their max — it leaves room for the surprise repair, the insurance hike, the month money's tight. A slightly cheaper car that leaves your budget breathing is worth more than the nicer one that keeps you up at night. Once you've settled on a price range, the smartest next move is comparing whether to finance and own it or lease — which our lease-vs-buy tool below does in seconds.
You know your budget — now see whether financing and owning or leasing that car actually costs you less over the years.
Open the lease vs buy tool →