Car Affordability Calculator

Enter your monthly budget, down payment, loan term, and credit rating to find out the maximum car price you can afford. The Car Affordability Calculator factors in trade-in value, cash incentives, fees, and your interest rate to show your total loan amount, estimated interest paid, and the highest sticker price within your budget.

The maximum monthly payment you are comfortable with.

Used to estimate your APR if no custom rate is entered.

%

Enter a specific APR to override the credit rating estimate.

Amount you plan to pay upfront.

Trade-in value minus any amount still owed on your current vehicle.

Manufacturer or dealer rebates that reduce the purchase price.

Estimated DMV, documentation, and other fees added to the loan.

%

Your state/local sales tax rate on the vehicle purchase.

Results

Max Car Price You Can Afford

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Total Loan Amount

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Estimated Monthly Payment

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Total Interest Paid

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Total Loan + Interest

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Applied APR

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Your Car Purchase Breakdown

Frequently Asked Questions

How does the car affordability calculator work?

The calculator works backward from your maximum monthly payment. It determines the largest loan amount whose monthly payment does not exceed your budget, then adds your down payment, trade-in, and incentives while subtracting taxes and fees to arrive at the maximum car price you can afford.

What APR does the calculator use?

If you enter a custom APR, that rate is used directly. Otherwise, the calculator estimates your APR based on your selected credit rating: Excellent (~5%), Good (~7%), Average (~10%), or Fair (~14%). Actual rates vary by lender, so check pre-qualification offers for accuracy.

Should I include taxes and fees in the loan or pay them upfront?

This calculator adds taxes and fees to the financed amount by default, which is the most common scenario. Paying these costs upfront lowers your loan balance and total interest paid, so if you have the cash it's often the better choice.

How does a trade-in affect what I can afford?

Your net trade-in value (trade-in price minus any balance owed) acts like additional cash, reducing the amount you need to finance. A higher trade-in value means a lower loan amount and therefore a higher sticker price you can afford within the same monthly budget.

What is a good rule of thumb for car affordability?

A popular guideline is the 20/4/10 rule: put at least 20% down, finance for no more than 4 years, and keep total vehicle expenses (payment + insurance) under 10% of your gross monthly income. This helps avoid being 'underwater' on your loan and keeps your budget healthy.

Does a longer loan term let me afford a more expensive car?

Yes — stretching the loan to 72 or 84 months lowers the monthly payment, which mathematically increases the loan amount you qualify for. However, longer terms mean more total interest paid and a higher risk of negative equity, so weigh the trade-offs carefully.

How does my credit score affect my car purchase?

Your credit score directly influences the APR a lender offers. Borrowers with excellent credit (780+) can access rates well below those offered to fair-credit borrowers. Even a few percentage points difference in APR can change your affordable price range by thousands of dollars over the life of the loan.

What is not included in this calculator?

This calculator does not include ongoing costs like insurance premiums, fuel, maintenance, or parking. Those expenses should be factored separately into your budget, as they can add several hundred dollars per month on top of your car payment.

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