Auto Affordability Calculator

The Auto Affordability Calculator determines the maximum vehicle price a buyer can afford based on their monthly payment budget, down payment, and expected financing terms. The methodology reverses the standard amortization calculation, solving for the loan amount given a target monthly payment, interest rate, and loan term. It accounts for sales tax being added to the vehicle price before calculating the financed amount, and subtracts the down payment from the total to arrive at the amount to finance. This calculator helps buyers avoid the common trap of looking at vehicles outside their true budget range. Real-world use cases include setting realistic expectations before visiting dealerships, comparing how different monthly budgets affect the vehicle price range, and understanding how down payments reduce the financed amount and monthly payment. Key limitations include not accounting for insurance costs, fuel, maintenance, registration fees, or the total cost of ownership over the loan period, which together with the payment can strain budgets more than the car payment alone.