Estimate your monthly payment by entering your loan amount, Annual Percentage Rate (APR), and loan term length.Estimating Your Monthly Car Payment Shopping for a new vehicle can be stressful, especially when it comes time to calculate car payments. But with the right tools, you can simplify your car-buying process. By using an auto payment calculator, you can generate an accurate estimate for your car loan to see whether a potential purchase falls within your budget. While some calculators can be complicated to use, Capital One Auto Loan Calculator is straightforward, requiring just three key pieces of information: loan amount, term length, and annual percentage rate (APR). Your loan amount could either be the cost of your car or the amount you anticipate needing to borrow. Since you may plan on contributing a down payment or trading in a vehicle to lower the overall cost of the purchase, consider what your loan amount will be after these additional contributions toward your vehicle pu...