The Auto Loan Calculator helps you estimate your monthly auto loan payment. This calculator helps you determine how much you can borrow for a new auto loan. Using the diamond sliders or entry boxes, enter your auto loan information. The monthly payment line graph and results box will both display your monthly payment amount. Click the Payment Schedule tab to estimate the principal and interest payment schedule for the term of the loan. Click the Payment Chart tab to see this same information in graphical form. This tab also allows you to estimate the impact of paying more principal down each month.