How Much Car Can I Afford?
Start with a sustainable total transportation budget, subtract operating costs, then solve for the maximum loan and vehicle price.
Monthly budget
The percentage applies to total transportation cost, not loan payment alone.
Purchase assumptions
The maximum price is solved from the payment remaining after operating costs.
About the How Much Car Can I Afford?
Lenders will often approve a larger loan than a household can comfortably afford, because loan approval is based on debt-to-income ratios rather than the full cost of owning and operating a vehicle. This calculator starts from your take-home pay and a transportation budget percentage you choose, subtracts realistic monthly insurance, fuel, maintenance, and other operating costs, and solves for the maximum vehicle price that fits what's left — giving you a personal affordability ceiling rather than a lender's maximum approval. It's useful before you start shopping, when comparing your own budget against a vehicle you're considering, or when deciding how a trade-in or larger down payment changes what you can responsibly afford.
How this calculator works
The exact model, assumptions, and limitations used for this decision.
Maximum payment = take-home pay × transportation-budget percentage − monthly operating costs. Maximum price is the present value of that payment stream plus down payment and trade, adjusted for tax and fees.
Calculation steps
- A total transportation budget is calculated from take-home pay.
- Insurance, fuel, maintenance, registration, and parking are removed before determining loan-payment capacity.
- The maximum loan is solved as the present value of fixed monthly payments, then converted to a pre-tax vehicle price.
Important assumptions
- The chosen transportation percentage is personally sustainable, not a lender approval rule.
- Operating inputs are realistic for the exact vehicle and driver.
- Down payment and trade-in are available without depleting required emergency savings.
Frequently asked questions
Common questions about inputs, assumptions, and interpreting the result.
01Why start with take-home pay?+
Take-home pay represents cash available for the household budget after payroll withholding. Gross-income rules can hide actual affordability.
02What transportation percentage should I use?+
There is no universal correct percentage. Start with the amount your complete budget can sustain and stress-test insurance, fuel, repairs, and income interruption.
03Why subtract operating costs before calculating payment?+
A vehicle must be insured, fueled, registered, and maintained. Treating the entire budget as loan capacity overstates affordability.
04Does lender approval mean a car is affordable?+
No. Approval reflects underwriting criteria, not all household goals, emergency needs, or retirement saving.
05Should trade-in value include the old loan?+
Enter net trade equity: vehicle trade value minus any loan payoff. Negative equity should reduce the trade input or increase fees.
06Why can a longer term raise the maximum price?+
More payments increase borrowing capacity but also interest and the risk of owing more than the car is worth. Test shorter terms before deciding.
07What if I have other debt payments, like student loans or credit cards?+
Consider lowering your transportation-budget percentage to account for existing debt obligations, since the calculator's percentage applies to take-home pay generally, not to income already committed elsewhere.
08Does a bigger down payment always increase the maximum price I can afford?+
Yes, dollar for dollar, since it directly adds to the maximum loan amount — but only use savings you can afford to part with without depleting funds needed for emergencies or the vehicle's operating costs.