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. Retirement Income Planner Use this calculator to evaluate your retirement income plan. Regular IRA vs. Roth IRA - Annual Contribution Use this calculator to determine whether a regular IRA or a Roth IRA is right for you. Buying vs. Leasing - Auto Use this calculator to determine if you should lease or buy your next vehicle. Time To Payoff Credit Card Use this calculator to calculate the monthly payment and length of time it will take to pay off your credit card. Social Security Calculator Estimate your Social Security benefits using the Social Security Administration's Quick Calculator. 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. Paycheck Calculator - Salaried This calculator computes net or gross pay for a single paycheck and displays the various withholdings.