Car Affordability Calculator
How much car can you actually afford, based on income and debts?
Your Car Affordability Calculator Result
Generated from the inputs below — a record you can revisit, or share with anyone helping you plan.
Your detailsInput Parameters
Student loans, credit cards, other loans -- not rent/mortgage
Most advisors recommend keeping auto payments under 10-15% of gross income
Example rate, not current market data. Enter the rate on your loan or quote.
Auto insurance is a real cost of car ownership, not just the loan payment
15% of gross monthly income minus other debts and insurance
Payment plus insurance -- your real monthly car cost
Analysis
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Free financial calculators. Where an official rule applies, the calculator shows the source it was checked against. No sign-up, and every calculation runs entirely in your browser — nothing you type is ever sent to us.
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The Car Affordability Calculator answers the question every other auto calculator on this site assumes you've already answered: what car can you actually afford? Instead of starting with a vehicle price and computing the payment, this tool starts with your income and existing debts and works backward to a realistic price range.
Enter your gross monthly income, other monthly debt payments, and what percentage of income you're comfortable dedicating to a car payment. The calculator factors in your down payment, trade-in, loan rate and term, and even a monthly insurance estimate, then shows the maximum vehicle price that keeps your total car costs within budget.
Already know the price and want the payment? Use the Car Loan Calculator instead.
How the Calculation Works
Max Loan Amount = Max Car Payment ÷ Monthly Amortization Factor
Max Car Price = Max Loan Amount + Down Payment + Trade-In
The calculator first figures out how much monthly payment you can afford after your income limit, existing debts, and insurance are accounted for. It then works backward through the loan amortization formula (the same one used across the site's other loan calculators) to find the loan amount that payment supports, and adds back your down payment and trade-in to get a maximum price.
Frequently Asked Questions
A common guideline is keeping your car payment under 10-15% of gross monthly income, and total car costs (payment + insurance + fuel + maintenance) under 20%. This calculator lets you set your own limit.
Because insurance is a real, unavoidable monthly cost of car ownership -- ignoring it and budgeting only for the loan payment is how people end up house-poor on a car they technically "could afford."
This calculator uses gross (pre-tax) monthly income, matching how lenders typically calculate debt-to-income ratios for auto loan approval.