US Auto Loan Calculator

Estimate car loan payment with sales tax, trade-in credit, and dealer fees.

Vehicle Financing Inputs

Estimated Loan Summary

Monthly Payment
$658.40
Amount Financed
$33,650.00
Total Interest
$5,854.05
Payoff Date
February 2031

Taxable amount: $35,000.00

Sales tax estimate: $2,450.00

Total out-of-pocket cost: $47,504.05

Methodology, assumptions, and source references
Auto-updated on Feb 24, 2026Data snapshot: Sep 13, 2025

Inputs used

  • Vehicle price, trade-in, down payment, sales tax rate, dealer fees, APR, and term
  • Trade-in is applied before tax as a general estimate (state rules vary)

Formula basis

  • Amount financed = (price - trade-in) + sales tax + fees - down payment
  • Monthly payment uses standard amortization formula
  • Total interest = total loan payments - amount financed

Assumptions and limits

  • Taxable base and fee treatment vary by state and lender
  • Title, registration, and optional products are not separately modeled
  • Actual APR and contract terms depend on borrower profile and lender