Car Affordability Calculator
Work backwards from your monthly budget to find your maximum vehicle price. This calculator handles taxes, trade-in value, and loan terms so you know what price tag to look for.
Budget Details
Enter your monthly limit and assumptions to see what you can afford.
Max Vehicle Price
Estimated total price you can afford
Loan Summary
Step by step
How to use this tool
- 1
Start with the monthly payment you can actually afford. A common guideline is to keep the car payment under 10-15% of your take-home pay.
- 2
Enter your planned down payment and the trade-in value of your current car, if any.
- 3
Select a loan term. Shorter terms (48-60 months) cost less in total interest, but raise the monthly payment.
- 4
Enter the APR your bank or credit union pre-approved you for. If you have not been pre-approved, use 6-7% as a starting assumption.
- 5
Set your state's sales tax rate. The tool calculates tax on the price minus trade-in, which is how most states assess it.
- 6
The result is your maximum sticker price. Take this number to the dealership as your ceiling, not your target.
Decision context
What this calculator helps you decide
Use Car Affordability Calculator when you need a quick, structured answer before you spend money, approve work, prepare a trip, compare options, or share information with a buyer, seller, shop, lender, or insurer. Enter the inputs you already know, review the result, then use the assumptions and limits below to decide what to check next.
Inputs and outputs
Start with the inputs that most affect this decision: Monthly budget, Down payment and net trade-in, Loan term and expected APR, Local sales tax rate. The output is meant to make the next step easier to compare, not to replace a written quote, inspection, policy document, loan disclosure, or local rule.
The main outputs are Maximum vehicle price, Total loan amount, Total interest paid. If one input is uncertain, change that value and compare the result again before treating a single estimate as final.
Best-use cases
This page is built around the search intent: calculate car affordability, how much car can i afford, car budget calculator. It is most useful when you want to narrow a decision, prepare better questions, or avoid missing a cost, risk, fitment issue, paperwork step, or ownership detail.
Keep the assumptions visible while using the result. If your vehicle, location, driving pattern, quote, loan, insurance policy, or listing situation is unusual, use this as a planning screen and verify the final decision with the relevant document, professional, or local requirement.
Real scenarios
Example calculations
First-Time Buyer on $500/mo Budget
A first car purchase with a modest budget and no trade-in.
Inputs
Results
Upgrading with a Trade-In
Trading in a $8,000 car and putting $5,000 cash down on a 48-month loan.
Inputs
Results
Direct Answer
Affordability depends mostly on your monthly budget, down payment, and loan term.
Assumptions we made
- Tax is applied to the difference between vehicle price and trade-in value.
- The calculated max vehicle price includes all dealer fees and taxes.
Important limitations
- Does not check your credit score or qualify you for the entered APR.
- Assumes a simple interest auto loan, not a lease.
Methodology
How the estimate works
Inputs, outputs, and calculation logic.
Logic
We use the present value of an annuity formula to convert your monthly budget and loan term into a maximum financed amount. Then, we add your down payment and net trade-in value, and back out the estimated sales tax to find the final sticker price you can negotiate.
Inputs
- Monthly budget
- Down payment and net trade-in
- Loan term and expected APR
- Local sales tax rate
Outputs
- Maximum vehicle price
- Total loan amount
- Total interest paid
FAQ
Frequently asked questions
What percentage of income should go to a car payment?
Does a trade-in really reduce what I pay?
Should I get pre-approved before visiting a dealer?
Is a longer loan term always bad?
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