Car Payment Calculator
Estimate your monthly car payment with taxes, trade-in, and down payment factored in.
How to Use This Calculator
1. Enter the vehicle price (sticker price or negotiated price).
2. Add your down payment and any trade-in value.
3. Enter your state's sales tax rate — this varies significantly by state.
4. Enter the APR (Annual Percentage Rate) from your lender and loan term.
State tip: Sales tax on vehicles ranges from 0% (MT, NH, OR, DE, AK) to 8%+ (CA, TN, RI). Some states cap the tax (e.g., TX caps at 6.25%).
Real-World Examples
Loan: $35,000 − $5,000 + $2,450 tax = $32,450
Monthly: ~$642 | Total interest: ~$6,080
Loan: $17,000 at 0% = $472/month
Frequently Asked Questions
As of 2024, rates for new cars range from 5–8% for excellent credit (720+) to 12%+ for subprime. Used cars typically run 1–2% higher. Credit unions often beat dealership financing.
20% is the recommended minimum for new cars to avoid being underwater. For used cars, 10% is commonly suggested.
Longer terms lower monthly payments but dramatically increase total interest paid. A $30,000 loan at 7% costs ~$4,900 over 48 months but ~$6,900 over 72 months.
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