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. 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. Buying vs. Leasing - Auto Use this calculator to determine if you should lease or buy your next vehicle. Paycheck Calculator - Salaried This calculator computes net or gross pay for a single paycheck and displays the various withholdings. Ratio Calculators Use these calculators to assess your company's liquidity, profitability and efficiency based on your financial statement data. Monthly to Bi-Weekly Loan Conversion This calculator shows how much sooner a loan or mortgage can be paid off and how much interest and expense can be saved if the payments are changed from monthly to bi-weekly and the payment amount is cut in half. Minimum IRA Distribution Use this calculator to determine the amount that the federal government requires you to withdraw annually from your IRA.