After you input your income, interest rate, and downpayment, the calculator will tell you the max purchase price of a car according to 3 popular car buying rules.
Rule 1: 20/4/10
- You can put 20% of the purchase price as a downpayment.
- You finance the car for no more than 4 years.
- Your monthly expenses for the vehicle - including loan payment, insurance, gas, maintenance, registration, and annual emissions check) are less than 10% of your gross monthly income.
Rule 2: 1/10th Guideline
Your car should be no more than 10% of your gross annual salary.
Rule 3: Dave Ramsey's Guideline
The total of all your cars should not be worth no more than half your annual income.
The article below gives a full breakdown of these car buying rules: