Social Security Calculator Estimate your Social Security benefits using the Social Security Administration's Quick Calculator. Retirement Income Planner Use this calculator to evaluate your retirement income plan. Children's Education Savings Use this calculator to evaluate and determine if you need to make changes to your college savings plan. 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. Buying vs. Leasing - Auto Use this calculator to determine if you should lease or buy your next vehicle.