Steering you through auto financing Calculate how interest rates, state taxes and fees impact the total cost of your loan. Auto Loan Calculator (Based on price) Budget Estimator (Based on income) Purchase Price Calculator (Based on budget) We use fees and taxes from all 50 states to estimate your cost to buy, own and operate a car. Refine OnlineAdjust interest rate, downpayment and trade to refine price and payment estimates in just a few clicks. Manage Your Time We give you a better idea of how you’re spending your money so you can better spend your time finding the right car. Save A DimeUnderstand your total car cost and avoid surprises . Account for all your expenses to stay within your budget.