Mortgage Calculator Use this calculator to view the total interest and total payment for a mortgage based on the loan amount, years of payments, and annual interest rate you enter. Mortgage Refinance Breakeven Use this calculator to determine if you should refinance your mortgage and when you will break even. Loan Amortization Calculator Use this calculator to calculate a loan amount based on your desired monthly payment or to calculate a monthly payment based on a loan amount. Social Security Calculator Estimate your Social Security benefits using the Social Security Administration's Quick Calculator. Regular IRA vs. Roth IRA - Annual Contribution Use this calculator to determine whether a regular IRA or a Roth IRA is right for you. Auto Loan Payment Calculator Use this calculator to calculate an auto loan amount based on your desired monthly payment or to calculate a monthly payment based on an auto loan amount. Buying vs. Leasing - Auto Use this calculator to determine if you should lease or buy your next vehicle.